H`Tc@@s\dZddlmZddlZddlmZmZmZmZddl m Z m Z ddlm Z dd lm Z dd l mZmZdd lmZmZmZmZmZmZmZmZmZdd lmZddlZddlZdd lmZddlZej dZ!dZ"ej#de e j$fdYZ%de e%efdYZ&de%efdYZ'de e%fdYZ(de)fdYZ*de*e%fdYZ+de+fdYZ,de+fdYZ-ej#d e*e fd!YZ.d"e.fd#YZ/d$e/fd%YZ0d&e e%fd'YZ1d(Z2d)Z3d*e)fd+YZ4d,e4e1fd-YZ5d.e1fd/YZ6d0e1fd1YZ7d2e5fd3YZ8d4e5fd5YZ9d6e e4e%fd7YZ:ej;id8d96Z<d:e%fd;YZ=d<e=fd=YZ>dS(>s/The schema module provides the building blocks for database metadata. Each element within this module describes a database entity which can be created and dropped, or is otherwise part of such an entity. Examples include tables, columns, sequences, and indexes. All entities are subclasses of :class:`~sqlalchemy.schema.SchemaItem`, and as defined in this module they are intended to be agnostic of any vendor-specific constructs. A collection of entities are grouped into a unit called :class:`~sqlalchemy.schema.MetaData`. MetaData serves as a logical grouping of schema elements, and can also be associated with an actual database connection such that operations involving the contained elements can contact the database as needed. Two of the elements here also build upon their "syntactic" counterparts, which are defined in :class:`~sqlalchemy.sql.expression.`, specifically :class:`~sqlalchemy.schema.Table` and :class:`~sqlalchemy.schema.Column`. Since these objects are part of the SQL expression language, they are usable as components in SQL expressions. i(tabsolute_importNi(texctutilteventt inspectioni(tSchemaEventTargett DialectKWArgs(tvisitors(ttype_api(t_bind_or_errortColumnCollection( t ClauseElementt ColumnClauset_truncated_labelt _as_truncatedt TextClauset_literal_as_textt ColumnElementt _find_columnst quoted_name(t TableClause(tddlt retain_schemacC@s |dkr|S|d|SdS(Nt.(tNone(tnametschema((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_get_table_key3s t SchemaItemcB@steZdZdZdZdZdZdZee j dddZ e j d Z d ZRS( s3Base class for items that define a database schema.t schema_itemcC@s|j|||S(N(t_execute_default(tselft connectiont multiparamstparams((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_execute_on_connection@scG@s1x*|D]"}|dk r|j|qqWdS(s7Initialize the list of child items for this SchemaItem.N(Rt_set_parent_with_dispatch(Rtargstitem((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt _init_itemsCs  cK@sgS(s"used to allow SchemaVisitor access((Rtkwargs((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt get_childrenJscC@s tj|S(N(Rt generic_repr(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt__repr__Nss0.9sUse ``.name.quote``cC@s |jjS(sReturn the value of the ``quote`` flag passed to this schema object, for those schema items which have a ``name`` field. (Rtquote(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR,Qs cC@siS(sLInfo dictionary associated with the object, allowing user-defined data to be associated with this :class:`.SchemaItem`. The dictionary is automatically generated when first accessed. It can also be specified in the constructor of some objects, such as :class:`.Table` and :class:`.Column`. ((R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pytinfo\s cC@s;d|jkr$|jj|_n|jj|j|S(NR-(t__dict__R-tcopytdispatcht_update(RR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_schema_item_copyhs(t__name__t __module__t__doc__t__visit_name__R#R'R)R+tpropertyRt deprecatedR,tmemoized_propertyR-R2(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR:s      tTablecB@s=eZdZdZdZeejdddZdZ dZ ddZ ed Z d Z d Zd Zejd ZedZdZdZedZdZdZdZdZdZeedZddZdedZ dedZ!e"ddZ#RS(s+Represent a table in a database. e.g.:: mytable = Table("mytable", metadata, Column('mytable_id', Integer, primary_key=True), Column('value', String(50)) ) The :class:`.Table` object constructs a unique instance of itself based on its name and optional schema name within the given :class:`.MetaData` object. Calling the :class:`.Table` constructor with the same name and same :class:`.MetaData` argument a second time will return the *same* :class:`.Table` object - in this way the :class:`.Table` constructor acts as a registry function. .. seealso:: :ref:`metadata_describing` - Introduction to database metadata Constructor arguments are as follows: :param name: The name of this table as represented in the database. The table name, along with the value of the ``schema`` parameter, forms a key which uniquely identifies this :class:`.Table` within the owning :class:`.MetaData` collection. Additional calls to :class:`.Table` with the same name, metadata, and schema name will return the same :class:`.Table` object. Names which contain no upper case characters will be treated as case insensitive names, and will not be quoted unless they are a reserved word or contain special characters. A name with any number of upper case characters is considered to be case sensitive, and will be sent as quoted. To enable unconditional quoting for the table name, specify the flag ``quote=True`` to the constructor, or use the :class:`.quoted_name` construct to specify the name. :param metadata: a :class:`.MetaData` object which will contain this table. The metadata is used as a point of association of this table with other tables which are referenced via foreign key. It also may be used to associate this table with a particular :class:`.Connectable`. :param \*args: Additional positional arguments are used primarily to add the list of :class:`.Column` objects contained within this table. Similar to the style of a CREATE TABLE statement, other :class:`.SchemaItem` constructs may be added here, including :class:`.PrimaryKeyConstraint`, and :class:`.ForeignKeyConstraint`. :param autoload: Defaults to ``False``. When ``True``, :class:`.Column` objects for this table should be reflected from the database, possibly augmenting or replacing existing :class:`.Column` objects that were expicitly specified. .. seealso:: :ref:`metadata_reflection_toplevel` :param autoload_replace: Defaults to ``True``; when using :paramref:`.Table.autoload` in conjunction with :paramref:`.Table.extend_existing`, indicates that :class:`.Column` objects present in the already-existing :class:`.Table` object should be replaced with columns of the same name retrieved from the autoload process. When ``False``, columns already present under existing names will be omitted from the reflection process. Note that this setting does not impact :class:`.Column` objects specified programmatically within the call to :class:`.Table` that also is autoloading; those :class:`.Column` objects will always replace existing columns of the same name when :paramref:`.Table.extend_existing` is ``True``. .. versionadded:: 0.7.5 .. seealso:: :paramref:`.Table.autoload` :paramref:`.Table.extend_existing` :param autoload_with: An :class:`.Engine` or :class:`.Connection` object with which this :class:`.Table` object will be reflected, when :paramref:`.Table.autoload` is also ``True``. If left unset, but :paramref:`.Table.autoload` is set to ``True``, an autoload operation will attempt to proceed by locating an :class:`.Engine` or :class:`.Connection` bound to the underlying :class:`.MetaData` object. .. seealso:: :paramref:`.Table.autoload` :param extend_existing: When ``True``, indicates that if this :class:`.Table` is already present in the given :class:`.MetaData`, apply further arguments within the constructor to the existing :class:`.Table`. If :paramref:`.Table.extend_existing` or :paramref:`.Table.keep_existing` are not set, and the given name of the new :class:`.Table` refers to a :class:`.Table` that is already present in the target :class:`.MetaData` collection, and this :class:`.Table` specifies additional columns or other constructs or flags that modify the table's state, an error is raised. The purpose of these two mutually-exclusive flags is to specify what action should be taken when a :class:`.Table` is specified that matches an existing :class:`.Table`, yet specifies additional constructs. :paramref:`.Table.extend_existing` will also work in conjunction with :paramref:`.Table.autoload` to run a new reflection operation against the database, even if a :class:`.Table` of the same name is already present in the target :class:`.MetaData`; newly reflected :class:`.Column` objects and other options will be added into the state of the :class:`.Table`, potentially overwriting existing columns and options of the same name. .. versionchanged:: 0.7.4 :paramref:`.Table.extend_existing` will invoke a new reflection operation when combined with :paramref:`.Table.autoload` set to True. As is always the case with :paramref:`.Table.autoload`, :class:`.Column` objects can be specified in the same :class:`.Table` constructor, which will take precedence. Below, the existing table ``mytable`` will be augmented with :class:`.Column` objects both reflected from the database, as well as the given :class:`.Column` named "y":: Table("mytable", metadata, Column('y', Integer), extend_existing=True, autoload=True, autoload_with=engine ) .. seealso:: :paramref:`.Table.autoload` :paramref:`.Table.autoload_replace` :paramref:`.Table.keep_existing` :param implicit_returning: True by default - indicates that RETURNING can be used by default to fetch newly inserted primary key values, for backends which support this. Note that create_engine() also provides an implicit_returning flag. :param include_columns: A list of strings indicating a subset of columns to be loaded via the ``autoload`` operation; table columns who aren't present in this list will not be represented on the resulting ``Table`` object. Defaults to ``None`` which indicates all columns should be reflected. :param info: Optional data dictionary which will be populated into the :attr:`.SchemaItem.info` attribute of this object. :param keep_existing: When ``True``, indicates that if this Table is already present in the given :class:`.MetaData`, ignore further arguments within the constructor to the existing :class:`.Table`, and return the :class:`.Table` object as originally created. This is to allow a function that wishes to define a new :class:`.Table` on first call, but on subsequent calls will return the same :class:`.Table`, without any of the declarations (particularly constraints) being applied a second time. If :paramref:`.Table.extend_existing` or :paramref:`.Table.keep_existing` are not set, and the given name of the new :class:`.Table` refers to a :class:`.Table` that is already present in the target :class:`.MetaData` collection, and this :class:`.Table` specifies additional columns or other constructs or flags that modify the table's state, an error is raised. The purpose of these two mutually-exclusive flags is to specify what action should be taken when a :class:`.Table` is specified that matches an existing :class:`.Table`, yet specifies additional constructs. .. seealso:: :paramref:`.Table.extend_existing` :param listeners: A list of tuples of the form ``(, )`` which will be passed to :func:`.event.listen` upon construction. This alternate hook to :func:`.event.listen` allows the establishment of a listener function specific to this :class:`.Table` before the "autoload" process begins. Particularly useful for the :meth:`.DDLEvents.column_reflect` event:: def listen_for_reflect(table, column_info): "handle the column reflection event" # ... t = Table( 'sometable', autoload=True, listeners=[ ('column_reflect', listen_for_reflect) ]) :param mustexist: When ``True``, indicates that this Table must already be present in the given :class:`.MetaData` collection, else an exception is raised. :param prefixes: A list of strings to insert after CREATE in the CREATE TABLE statement. They will be separated by spaces. :param quote: Force quoting of this table's name on or off, corresponding to ``True`` or ``False``. When left at its default of ``None``, the column identifier will be quoted according to whether the name is case sensitive (identifiers with at least one upper case character are treated as case sensitive), or if it's a reserved word. This flag is only needed to force quoting of a reserved word which is not known by the SQLAlchemy dialect. :param quote_schema: same as 'quote' but applies to the schema identifier. :param schema: The schema name for this table, which is required if the table resides in a schema other than the default selected schema for the engine's database connection. Defaults to ``None``. The quoting rules for the schema name are the same as those for the ``name`` parameter, in that quoting is applied for reserved words or case-sensitive names; to enable unconditional quoting for the schema name, specify the flag ``quote_schema=True`` to the constructor, or use the :class:`.quoted_name` construct to specify the name. :param useexisting: Deprecated. Use :paramref:`.Table.extend_existing`. :param \**kw: Additional keyword arguments not mentioned above are dialect specific, and passed in the form ``_``. See the documentation regarding an individual dialect at :ref:`dialect_toplevel` for detail on documented arguments. ttablec O@sH|stj|Sy$|d|d|d}}}Wntk rVtdnX|jdd}|dkr|j}n|jdt}|jdt}d|krd }t j ||rd }t j |n|jdt}n|r|rd }t j |n|jd t} t ||} | |jkr| r{| r{t|r{t jd | n|j| } |r| j||n| S| rt jd| ntj|} | jj| ||j||| y1| j||||| jj| || SWn|j||nXdS(Niiis$Table() takes at least two argumentsRt keep_existingtextend_existingt useexistings0useexisting is deprecated. Use extend_existing.s/useexisting is synonymous with extend_existing.s9keep_existing and extend_existing are mutually exclusive.t mustexistsTable '%s' is already defined for this MetaData instance. Specify 'extend_existing=True' to redefine options and columns on an existing Table object.sTable '%s' not defined(tobjectt__new__t IndexErrort TypeErrortgetRRtpoptFalseRtwarn_deprecatedRt ArgumentErrorRttablestbooltInvalidRequestErrort_init_existingR0tbefore_parent_attacht _add_tablet_inittafter_parent_attacht _remove_table( tclsR%tkwRtmetadataRR<R=tmsgR?tkeyR;((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRAesZ $        s0.9sUse ``table.schema.quote``cC@s |jjS(s^Return the value of the ``quote_schema`` flag passed to this :class:`.Table`. (RR,(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt quote_schemascO@sdS(sConstructor for :class:`~.schema.Table`. This method is a no-op. See the top-level documentation for :class:`~.schema.Table` for constructor arguments. N((RR%RS((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt__init__sc O@s$tt|jt||jdd||_|jdd|_|jdkrg|j|_n'|jdd}t|j||_t|_ t|_ t |_ t j|t|_t|_|jdk rd|j|jf|_n |j|_|jdt}|jdd}|jdt|jdd}|jd t|_d |kr|jd |_nd |kr|jd } x*| D]\} } tj|| | qWn|jd g|_|j||r|j|||n|j|dS( NR,RRWs%s.%stautoloadt autoload_withtautoload_replacetinclude_columnstimplicit_returningR-t listenerstprefixes(tsuperR:RXRRERRTRtsettindexest constraintsR t_columnstPrimaryKeyConstraintR$t foreign_keyst_extra_dependenciesRtfullnameRFtTrueR]R-Rtlistent _prefixest _extra_kwargst _autoloadR'( RRRTR%R(RWRYRZR\R^tevttfn((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyROsB          cC@sW|r%|j|jj|||n.t|dd}|j|jj|||dS(NRUsNo engine is bound to this Table's MetaData. Pass an engine to the Table via autoload_with=, or associate the MetaData with an engine via metadata.bind=(t run_callabletdialectt reflecttableR (RRTRZR\texclude_columnstbind((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRms   cC@st|jddS(sTReturn the set of constraints as a list, sorted by creation order. RVcS@s|jS(N(t_creation_order(tc((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyts(tsortedRc(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_sorted_constraintssc O@s|jdt}|jdd}|jdt}|jdd}|r{||jkr{tjd|j|fn|jdd}|dk rx6|jD](}|j|kr|j j |qqWnx,d D]$} | |krtjd qqWd |kr"|jd |_ n|rr|sPg|jD]}|j^q8} nd } |j |j ||| n|j||j|dS( NRYRZR[Rs7Can't change schema of existing table from '%s' to '%s'R\R,RWs2Can't redefine 'quote' or 'quote_schema' argumentsR-(squotes quote_schema((RERFRRiRRRHRvRRdtremoveR-RmRTRlR'( RR%R(RYRZR[RR\RvRVRs((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRLs8    "   cK@s|j|dS(N(t_validate_dialect_kwargs(RR(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRl'scC@sdS(N((R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_init_collections*sc C@sx|jD]}|jr |jjdk r t|jjtjjr |j s_|jdkr t |j tdt fr |j dks|j j r |Sq WdS(Nt ignore_fk(t primary_keyt autoincrementttypet_type_affinityRt issubclassRt INTEGERTYPERft isinstancetdefaulttSequencetserver_defaultt reflected(Rtcol((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_autoincrement_column-s   cC@st|j|jS(s_Return the 'key' for this :class:`.Table`. This value is used as the dictionary key within the :attr:`.MetaData.tables` collection. It is typically the same as that of :attr:`.Table.name` for a table with no :attr:`.Table.schema` set; otherwise it is typically of the form ``schemaname.tablename``. (RRR(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRV:s c C@sddjt|jgt|jgg|jD]}t|^q2gdgD]%}d|tt||f^qRS(Ns Table(%s)s, Rs%s=%s(tjointreprRRTtcolumnstgetattr(Rtxtk((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR+Gs ?cC@st|j|jS(N(Rt descriptionR(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt__str__MscC@s|jr|jjpdS(s2Return the connectable associated with this Table.N(RTRtR(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRtPscC@s|jj|dS(sAdd a 'dependency' for this Table. This is another Table object which must be created first before this one can, or dropped after this one. Usually, dependencies between tables are determined via ForeignKey objects. However, for other situations that create dependencies outside of foreign keys (rules, inheriting), this method can manually establish such a link. N(Rgtadd(RR;((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pytadd_is_dependent_onVs cC@s|j|dS(szAppend a :class:`~.schema.Column` to this :class:`~.schema.Table`. The "key" of the newly added :class:`~.schema.Column`, i.e. the value of its ``.key`` attribute, will then be available in the ``.c`` collection of this :class:`~.schema.Table`, and the column definition will be included in any CREATE TABLE, SELECT, UPDATE, etc. statements generated from this :class:`~.schema.Table` construct. Note that this does **not** change the definition of the table as it exists within any underlying database, assuming that table has already been created in the database. Relational databases support the addition of columns to existing tables using the SQL ALTER command, which would need to be emitted for an already-existing table that doesn't contain the newly added column. N(R$(Rtcolumn((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt append_columndscC@s|j|dS(sAppend a :class:`~.schema.Constraint` to this :class:`~.schema.Table`. This has the effect of the constraint being included in any future CREATE TABLE statement, assuming specific DDL creation events have not been associated with the given :class:`~.schema.Constraint` object. Note that this does **not** produce the constraint within the relational database automatically, for a table that already exists in the database. To add a constraint to an existing relational database table, the SQL ALTER command must be used. SQLAlchemy also provides the :class:`.AddConstraint` construct which can produce this SQL when invoked as an executable clause. N(R$(Rt constraint((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pytappend_constraintzsc@s9fd}tj|djdd|dS(szAppend a DDL event listener to this ``Table``. .. deprecated:: 0.7 See :class:`.DDLEvents`. c@s||dS(N((ttargetR RS(tlistenert event_name(s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pytadapt_listenerstt-t_N(RRjtreplace(RRRR((RRs[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pytappend_ddl_listenerscC@s&|j|j|j|||_dS(N(RNRRRT(RRT((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt _set_parentscK@s7|stj|d||S|r/t|jSgSdS(Ntcolumn_collections(RR)tlistR(RRtschema_visitorRS((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR)s  cC@s=|dkrt|}n|j|jj|jd|jS(s!Return True if this table exists.RN(RR RpRqt has_tableRR(RRt((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pytexistss cC@s8|dkrt|}n|jtj|d|dS(sIssue a ``CREATE`` statement for this :class:`.Table`, using the given :class:`.Connectable` for connectivity. .. seealso:: :meth:`.MetaData.create_all`. t checkfirstN(RR t _run_visitorRtSchemaGenerator(RRtR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pytcreates  cC@s8|dkrt|}n|jtj|d|dS(sIssue a ``DROP`` statement for this :class:`.Table`, using the given :class:`.Connectable` for connectivity. .. seealso:: :meth:`.MetaData.drop_all`. RN(RR RRt SchemaDropper(RRtR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pytdrops  c C@s|tkr|j}n|dkr0|j}nt|j|}||jkrptjd|j|j|Sg}x*|j D]}|j |j d|qWt |j|d|||j }x|jD]}t|trG|j}|r |||||} n||jkr|nd} |j|j d| d|q|j|j d|d|qWx|jD]y} t| j dkrt| j djrqtnt| jd| jg| j jD]} |j| ^q| j qtW|j|S(s= Return a copy of this :class:`.Table` associated with a different :class:`.MetaData`. E.g.:: m1 = MetaData() user = Table('user', m1, Column('id', Integer, priamry_key=True)) m2 = MetaData() user_copy = user.tometadata(m2) :param metadata: Target :class:`.MetaData` object, into which the new :class:`.Table` object will be created. :param schema: optional string name indicating the target schema. Defaults to the special symbol :attr:`.RETAIN_SCHEMA` which indicates that no change to the schema name should be made in the new :class:`.Table`. If set to a string name, the new :class:`.Table` will have this new name as the ``.schema``. If set to ``None``, the schema will be set to that of the schema set on the target :class:`.MetaData`, which is typically ``None`` as well, unless set explicitly:: m2 = MetaData(schema='newschema') # user_copy_one will have "newschema" as the schema name user_copy_one = user.tometadata(m2, schema=None) m3 = MetaData() # schema defaults to None # user_copy_two will have None as the schema name user_copy_two = user.tometadata(m3, schema=None) :param referred_schema_fn: optional callable which can be supplied in order to provide for the schema name that should be assigned to the referenced table of a :class:`.ForeignKeyConstraint`. The callable accepts this parent :class:`.Table`, the target schema that we are changing to, the :class:`.ForeignKeyConstraint` object, and the existing "target schema" of that constraint. The function should return the string schema name that should be applied. E.g.:: def referred_schema_fn(table, to_schema, constraint, referred_schema): if referred_schema == 'base_tables': return referred_schema else: return to_schema new_table = table.tometadata(m2, schema="alt_schema", referred_schema_fn=referred_schema_fn) .. versionadded:: 0.9.2 sBTable '%s' already exists within the given MetaData - not copying.Rt target_tableiituniqueN(t RETAIN_SCHEMARRRRRIRtwarnRRtappendR/R:R(RcRtForeignKeyConstraintt_referred_schemaRRbtlenRtindextIndexRtkeysRvR2( RRTRtreferred_schema_fnRVR%RvR;treferred_schematfk_constraint_schemaRR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt tometadatasF<         &(N($R3R4R5R6RAR7RR8RWRXRORmRyRLRlR|R9RRVR+RRtRRRRRRiRFR)RRRRRR(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR:os: 8 5  %          tColumncB@szeZdZdZdZdZdZdZdZdZ dZ d Z e e e d Ze d ZRS( s(Represents a column in a database table.RcO@s|jdd}|jdd}t|}|rt|dtjr|dk rjtjdn|jd}qn|r|d}t|dr|dk rtjdn|jd}qn|dk rt ||jdd}nd|krtjdnt t |j |||jd ||_ |jd t|_|jd |j |_|jd d|_|jd d|_|jdd|_|jdd|_|jdd|_|jdt|_|jdd|_|jdd|_|jdt|_t|_t|_d|krk|jd|_n%t|jt r|jj!|n|jdk r t|jt"t#fr|j$|jq t%|jdtrt|jtj&rtj'dqn|j$t"|jn|jdk rvt|jt(r]|j$|jj)tqv|j$t*|jn|jdk rt|jt"t#fr|j$|jq|j$t"|jdtn|jdk r+t|jt(r |j$|jj)tq+|j$t*|jdtn|j+|tj,|d|krf|jd|_-n|rtjdt.t|ndS(s+ Construct a new ``Column`` object. :param name: The name of this column as represented in the database. This argument may be the first positional argument, or specified via keyword. Names which contain no upper case characters will be treated as case insensitive names, and will not be quoted unless they are a reserved word. Names with any number of upper case characters will be quoted and sent exactly. Note that this behavior applies even for databases which standardize upper case names as case insensitive such as Oracle. The name field may be omitted at construction time and applied later, at any time before the Column is associated with a :class:`.Table`. This is to support convenient usage within the :mod:`~sqlalchemy.ext.declarative` extension. :param type\_: The column's type, indicated using an instance which subclasses :class:`~sqlalchemy.types.TypeEngine`. If no arguments are required for the type, the class of the type can be sent as well, e.g.:: # use a type with arguments Column('data', String(50)) # use no arguments Column('level', Integer) The ``type`` argument may be the second positional argument or specified by keyword. If the ``type`` is ``None`` or is omitted, it will first default to the special type :class:`.NullType`. If and when this :class:`.Column` is made to refer to another column using :class:`.ForeignKey` and/or :class:`.ForeignKeyConstraint`, the type of the remote-referenced column will be copied to this column as well, at the moment that the foreign key is resolved against that remote :class:`.Column` object. .. versionchanged:: 0.9.0 Support for propagation of type to a :class:`.Column` from its :class:`.ForeignKey` object has been improved and should be more reliable and timely. :param \*args: Additional positional arguments include various :class:`.SchemaItem` derived constructs which will be applied as options to the column. These include instances of :class:`.Constraint`, :class:`.ForeignKey`, :class:`.ColumnDefault`, and :class:`.Sequence`. In some cases an equivalent keyword argument is available such as ``server_default``, ``default`` and ``unique``. :param autoincrement: This flag may be set to ``False`` to indicate an integer primary key column that should not be considered to be the "autoincrement" column, that is the integer primary key column which generates values implicitly upon INSERT and whose value is usually returned via the DBAPI cursor.lastrowid attribute. It defaults to ``True`` to satisfy the common use case of a table with a single integer primary key column. If the table has a composite primary key consisting of more than one integer column, set this flag to True only on the column that should be considered "autoincrement". The setting *only* has an effect for columns which are: * Integer derived (i.e. INT, SMALLINT, BIGINT). * Part of the primary key * Not refering to another column via :class:`.ForeignKey`, unless the value is specified as ``'ignore_fk'``:: # turn on autoincrement for this column despite # the ForeignKey() Column('id', ForeignKey('other.id'), primary_key=True, autoincrement='ignore_fk') It is typically not desirable to have "autoincrement" enabled on such a column as its value intends to mirror that of a primary key column elsewhere. * have no server side or client side defaults (with the exception of Postgresql SERIAL). The setting has these two effects on columns that meet the above criteria: * DDL issued for the column will include database-specific keywords intended to signify this column as an "autoincrement" column, such as AUTO INCREMENT on MySQL, SERIAL on Postgresql, and IDENTITY on MS-SQL. It does *not* issue AUTOINCREMENT for SQLite since this is a special SQLite flag that is not required for autoincrementing behavior. .. seealso:: :ref:`sqlite_autoincrement` * The column will be considered to be available as cursor.lastrowid or equivalent, for those dialects which "post fetch" newly inserted identifiers after a row has been inserted (SQLite, MySQL, MS-SQL). It does not have any effect in this regard for databases that use sequences to generate primary key identifiers (i.e. Firebird, Postgresql, Oracle). .. versionchanged:: 0.7.4 ``autoincrement`` accepts a special value ``'ignore_fk'`` to indicate that autoincrementing status regardless of foreign key references. This applies to certain composite foreign key setups, such as the one demonstrated in the ORM documentation at :ref:`post_update`. :param default: A scalar, Python callable, or :class:`.ColumnElement` expression representing the *default value* for this column, which will be invoked upon insert if this column is otherwise not specified in the VALUES clause of the insert. This is a shortcut to using :class:`.ColumnDefault` as a positional argument; see that class for full detail on the structure of the argument. Contrast this argument to ``server_default`` which creates a default generator on the database side. :param doc: optional String that can be used by the ORM or similar to document attributes. This attribute does not render SQL comments (a future attribute 'comment' will achieve that). :param key: An optional string identifier which will identify this ``Column`` object on the :class:`.Table`. When a key is provided, this is the only identifier referencing the ``Column`` within the application, including ORM attribute mapping; the ``name`` field is used only when rendering SQL. :param index: When ``True``, indicates that the column is indexed. This is a shortcut for using a :class:`.Index` construct on the table. To specify indexes with explicit names or indexes that contain multiple columns, use the :class:`.Index` construct instead. :param info: Optional data dictionary which will be populated into the :attr:`.SchemaItem.info` attribute of this object. :param nullable: If set to the default of ``True``, indicates the column will be rendered as allowing NULL, else it's rendered as NOT NULL. This parameter is only used when issuing CREATE TABLE statements. :param onupdate: A scalar, Python callable, or :class:`~sqlalchemy.sql.expression.ClauseElement` representing a default value to be applied to the column within UPDATE statements, which wil be invoked upon update if this column is not present in the SET clause of the update. This is a shortcut to using :class:`.ColumnDefault` as a positional argument with ``for_update=True``. :param primary_key: If ``True``, marks this column as a primary key column. Multiple columns can have this flag set to specify composite primary keys. As an alternative, the primary key of a :class:`.Table` can be specified via an explicit :class:`.PrimaryKeyConstraint` object. :param server_default: A :class:`.FetchedValue` instance, str, Unicode or :func:`~sqlalchemy.sql.expression.text` construct representing the DDL DEFAULT value for the column. String types will be emitted as-is, surrounded by single quotes:: Column('x', Text, server_default="val") x TEXT DEFAULT 'val' A :func:`~sqlalchemy.sql.expression.text` expression will be rendered as-is, without quotes:: Column('y', DateTime, server_default=text('NOW()')) y DATETIME DEFAULT NOW() Strings and text() will be converted into a :class:`.DefaultClause` object upon initialization. Use :class:`.FetchedValue` to indicate that an already-existing column will generate a default value on the database side which will be available to SQLAlchemy for post-fetch after inserts. This construct does not specify any DDL and the implementation is left to the database, such as via a trigger. :param server_onupdate: A :class:`.FetchedValue` instance representing a database-side default generation function. This indicates to SQLAlchemy that a newly generated value will be available after updates. This construct does not specify any DDL and the implementation is left to the database, such as via a trigger. :param quote: Force quoting of this column's name on or off, corresponding to ``True`` or ``False``. When left at its default of ``None``, the column identifier will be quoted according to whether the name is case sensitive (identifiers with at least one upper case character are treated as case sensitive), or if it's a reserved word. This flag is only needed to force quoting of a reserved word which is not known by the SQLAlchemy dialect. :param unique: When ``True``, indicates that this column contains a unique constraint, or if ``index`` is ``True`` as well, indicates that the :class:`.Index` should be created with the unique flag. To specify multiple columns in the constraint/index or to specify an explicit name, use the :class:`.UniqueConstraint` or :class:`.Index` constructs explicitly. :param system: When ``True``, indicates this is a "system" column, that is a column which is automatically made available by the database, and should not be included in the columns list for a ``CREATE TABLE`` statement. For more elaborate scenarios where columns should be conditionally rendered differently on different backends, consider custom compilation rules for :class:`.CreateColumn`. ..versionadded:: 0.8.3 Added the ``system=True`` parameter to :class:`.Column`. Rttype_is0May not pass name positionally and as a keyword.t _sqla_types1May not pass type_ positionally and as a keyword.R,s9Explicit 'name' is required when sending 'quote' argumentRVR~tnullableRRtserver_onupdateRRtsystemtdoctonupdateRt_proxiest_warn_on_bytestrings2Unicode column received non-unicode default value.t for_updateR-s$Unknown arguments passed to Column: N(/RERRRRt string_typesRRHthasattrRR`RRXRVRFR~RRRRRRRRRRiRRaRcRfRRRR$t ColumnDefaultRRRt binary_typeRt FetchedValuet_as_for_updatet DefaultClauseR'tset_creation_orderR-R(RR%R(RRtcoltype((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRXCs               cC@sX|jdkrdS|jdk rM|jjrC|jjd|jS|jSn|jSdS(Ns (no name)R(RRR;tnamed_with_columnR(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRs  cC@s8x1|jD]"}|jjj|jr tSq WtSdS(sOReturn True if this Column references the given column via foreign key.N(RfRt proxy_sett intersectionRiRF(RRtfk((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt referencesscC@s|j|dS(N(R$(RR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pytappend_foreign_keysc C@stg}|j|jkr(|jdn|jrA|jdn|jsZ|jdn|jrs|jdn|jr|jdn|jr|jdnddjt |jgt |j gg|j D]}|dk rt |^qg|j D]}t |^q|jdk r8d |jjp;d gg|D]%}d |t t||f^qFS( NRVR~RRRRs Column(%s)s, s table=<%s>s table=Nones%s=%s(RVRRR~RRRRRRRRfRRcR;RR(RtkwargRR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR+s       cC@sk|jstjdn|jdkr9|j|_nt|dd}|dk r|||k r|tjd|jn|j|jkr|jj|j}||k rxL|j D]>}|j j ||j |j kr|j j |j qqWqn|jj ||jr=|jj|tjj|n4|j|jkrqtjd|j|jfn||_|jrt|jtjrtjdntd|dt|jnI|jrt|jtjrtjdn|jt|jn|j|jf}||jjjkrgx+|jjj|D]}|j |qMWndS(NsfColumn must be constructed with a non-blank name or assign a non-blank .name before adding to a Table.R;s,Column object already assigned to Table '%s'sTTrying to redefine primary-key column '%s' as a non-primary-key column on table '%s'sThe 'index' keyword argument on Column is boolean only. To create indexes with a specific name, create an explicit Index object external to the Table.RsThe 'unique' keyword argument on Column is boolean only. To create unique constraints or indexes with a specific name, append an explicit UniqueConstraint to the Table's list of elements, or create an explicit Index object external to the Table.(!RRRHRVRRRRdRDRfRzRRcRR~t_replaceR:Rt_resetRhR;RRRRRRJRRtUniqueConstraintRTt _fk_memost_set_remote_table(RR;texistingRRtfk_key((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRsP          cC@s9|jdk r"|||jntj|d|dS(NRP(R;RRRj(RRo((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_on_table_attachscK@sg|jD]}|j|^q g|jD]}|js,|j|^q,}|j}t|tr{|j|}n|jd|jd|d|j d|j d|j d|j d|j d|jd |jd |jd |jd |jd |jd|j|}|j|S(sgCreate a copy of this ``Column``, unitialized. This is used in ``Table.tometadata``. RRRVR~RRRRRRRRRR(RcR/RfRRRRt _constructorRRVR~RRRRRRRRRRR2(RRSRvR%R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR/s, "/               c K@syg|jD]}t|jd|j^q }|dkr[|jdkr[tjdny||j|rt |py|jn |p|j|j d|r|n|r|n|j d|j d|j d|g|}Wn+tk rtjtd|jnX||_|jj||jdk rF|jj|j |_n|j rb|j j|n|jj|||S( s$Create a *proxy* for this column. This is a copy of this ``Column`` referenced by a different parent (such as an alias or select statement). The column should be used only in select scenarios, as its full DDL/default information is not transferred. t _constraints^Cannot initialize a sub-selectable with this Column object until its 'name' has been assigned.RVR~RRsCould not create a copy of this %r object. Ensure the class includes a _constructor() attribute or method which accepts the standard Column constructor arguments, or references the Column class itself.N(Rft ForeignKeyRRRRRRKRRRRVR~RRCRtraise_from_causet __class__R;RdRt _is_clone_ofRR0RP( Rt selectableRRVtname_is_truncatableRStfRRv((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt _make_proxys4 + ' !     cK@sc|rOg|j|jfD]}|dk r|^qt|jt|jStj||SdS(N(RRRRRfRcR R)(RRR(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR)FsI(R3R4R5R6RXRRRR+RRR/RRFRR)(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR>s E   ;  $ ,Rc B@seZdZdZdedddddedd ZdZddZddZ e dZ dZ e e Z dZd Zejd Zd Zd Zd ZejdZdZdZdZdZRS(sDefines a dependency between two columns. ``ForeignKey`` is specified as an argument to a :class:`.Column` object, e.g.:: t = Table("remote_table", metadata, Column("remote_id", ForeignKey("main_table.id")) ) Note that ``ForeignKey`` is only a marker object that defines a dependency between two columns. The actual constraint is in all cases represented by the :class:`.ForeignKeyConstraint` object. This object will be generated automatically when a ``ForeignKey`` is associated with a :class:`.Column` which in turn is associated with a :class:`.Table`. Conversely, when :class:`.ForeignKeyConstraint` is applied to a :class:`.Table`, ``ForeignKey`` markers are automatically generated to be present on each associated :class:`.Column`, which are also associated with the constraint object. Note that you cannot define a "composite" foreign key constraint, that is a constraint between a grouping of multiple parent/child columns, using ``ForeignKey`` objects. To define this grouping, the :class:`.ForeignKeyConstraint` object must be used, and applied to the :class:`.Table`. The associated ``ForeignKey`` objects are created automatically. The ``ForeignKey`` objects associated with an individual :class:`.Column` object are available in the `foreign_keys` collection of that column. Further examples of foreign key configuration are in :ref:`metadata_foreignkeys`. t foreign_keyc K@s)||_t|jtjr*d|_nt|jdrQ|jj|_n |j|_t|jtst j d|jn:t|jj tj t fst j d|jj n||_d|_||_||_||_||_||_||_| |_| |_| |_dS(s Construct a column-level FOREIGN KEY. The :class:`.ForeignKey` object when constructed generates a :class:`.ForeignKeyConstraint` which is associated with the parent :class:`.Table` object's collection of constraints. :param column: A single target column for the key relationship. A :class:`.Column` object or a column name as a string: ``tablename.columnkey`` or ``schema.tablename.columnkey``. ``columnkey`` is the ``key`` which has been assigned to the column (defaults to the column name itself), unless ``link_to_name`` is ``True`` in which case the rendered name of the column is used. .. versionadded:: 0.7.4 Note that if the schema name is not included, and the underlying :class:`.MetaData` has a "schema", that value will be used. :param name: Optional string. An in-database name for the key if `constraint` is not provided. :param onupdate: Optional string. If set, emit ON UPDATE when issuing DDL for this constraint. Typical values include CASCADE, DELETE and RESTRICT. :param ondelete: Optional string. If set, emit ON DELETE when issuing DDL for this constraint. Typical values include CASCADE, DELETE and RESTRICT. :param deferrable: Optional bool. If set, emit DEFERRABLE or NOT DEFERRABLE when issuing DDL for this constraint. :param initially: Optional string. If set, emit INITIALLY when issuing DDL for this constraint. :param link_to_name: if True, the string name given in ``column`` is the rendered name of the referenced column, not its locally assigned ``key``. :param use_alter: passed to the underlying :class:`.ForeignKeyConstraint` to indicate the constraint should be generated/dropped externally from the CREATE TABLE/ DROP TABLE statement. See that classes' constructor for details. :param match: Optional string. If set, emit MATCH when issuing DDL for this constraint. Typical values include SIMPLE, PARTIAL and FULL. :param \**dialect_kw: Additional keyword arguments are dialect specific, and passed in the form ``_``. The arguments are ultimately handled by a corresponding :class:`.ForeignKeyConstraint`. See the documentation regarding an individual dialect at :ref:`dialect_toplevel` for detail on documented arguments. .. versionadded:: 0.9.2 t__clause_element__s9String, Column, or Column-bound argument expected, got %rs8ForeignKey received Column not bound to a Table, got: %rN(t_colspecRRRRt _table_columnRRR RRHR;tNoneTypeRRtparentt use_alterRRtondeletet deferrablet initiallyt link_to_nametmatcht_unvalidated_dialect_kw( RRRRRRRRRRRt dialect_kw((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRXvs4@             cC@sd|jS(NsForeignKey(%r)(t _get_colspec(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR+scC@sst|jd|d|jd|jd|jd|jd|jd|jd|jd |j |j }|j |S( sProduce a copy of this :class:`.ForeignKey` object. The new :class:`.ForeignKey` will not be bound to any :class:`.Column`. This method is usually used by the internal copy procedures of :class:`.Column`, :class:`.Table`, and :class:`.MetaData`. :param schema: The returned :class:`.ForeignKey` will reference the original table and column name, qualified by the given string schema name. RRRRRRRRR( RRRRRRRRRRRR2(RRR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR/s        cC@s`|r)|j\}}}d|||fS|jdk rUd|jjj|jjfS|jSdS(sReturn a string based 'column specification' for this :class:`.ForeignKey`. This is usually the equivalent of the string-based "tablename.colname" argument first passed to the object's constructor. s%s.%s.%ss%s.%sN(t_column_tokensRRR;RhRVR(RRt_schemattnametcolname((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRscC@s |jdS(Ni(R(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR scC@sX|jdk r5|jjdkr%dS|jjjSn|j\}}}t||SdS(N(RRR;RVRR(RRRR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt _table_keys cC@s|j|jdk S(s\Return True if the given :class:`.Table` is referenced by this :class:`.ForeignKey`.N(tcorresponding_columnRR(RR;((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRscC@s|j|jS(sReturn the :class:`.Column` in the given :class:`.Table` referenced by this :class:`.ForeignKey`. Returns None if this :class:`.ForeignKey` does not reference the given :class:`.Table`. (RR(RR;((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt get_referent#s cC@s|jjd}|dkr:tjd|jnt|dkra|j}d}n|j}|j}t|dkrdj|}nd}|||fS(s7parse a string-based _colspec into its component parts.Rs,Invalid foreign key column specification: %siiN( RtsplitRRRHRRRER(RtmRRR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR.s     cC@s|jdkr!tjdn$|jjdkrEtjdn|jj}xH|jjD].}t|tr^|j|kstPq^q^Wt st|j \}}}|dkr|j j dk r|j j }nt ||}|||fS(NsLthis ForeignKey object does not yet have a parent Column associated with it.sCthis ForeignKey's parent column is not yet associated with a Table.(RRRRKR;t base_columnsRRtAssertionErrorRFRRTRR(Rt parenttableRvRRRttablekey((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_resolve_col_tokensMs"    cC@st|jds!||j_n|jj|ks9td}|dkrr|j}|jj|jjd}nY|j r|}xG|jD]}|j |kr|}qqWn|}|jj|d}|dkr t j d|j |j |j |f|j |n|j|dS(Nt_referred_tablesiCould not initialize target column for ForeignKey '%s' on table '%s': table '%s' has no column named '%s'(RRRRRRRvRDRVRRRtNoReferencedColumnErrorRt_set_target_column(RRR;Rt_columnRVRv((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_link_to_col_by_colstringns(    cC@s|jjjr!|j|j_nt|jjtr|jjj|jjf}||jjjjkrxB|jjjj|D]'}|jjjr|j|j_qqWqn||_ dS(N( RRt_isnullRR;R:RVRTRR(RRRR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR scC@st|jtjr|j\}}}||jkr^tjd|j||f|q|j |jkrtj d|qtj d|j|j ||f||n2t |jdr|jj}|S|j}|SdS(sReturn the target :class:`.Column` referenced by this :class:`.ForeignKey`. If no target column has been established, an exception is raised. .. versionchanged:: 0.9.0 Foreign key target column resolution now occurs as soon as both the ForeignKey object and the remote Column to which it refers are both associated with the same MetaData object. s|Foreign key associated with column '%s' could not find table '%s' with which to generate a foreign key to target column '%s's9Table %s is no longer associated with its parent MetaDatasiCould not initialize target column for ForeignKey '%s' on table '%s': table '%s' has no column named '%s'RN(RRRRRRTRtNoReferencedTableErrorRRVRKRRRR(RRRRR ((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRs(   cC@sc|jdk r0|j|k r0tjdn||_|jjj||jj|jdS(Ns&This ForeignKey already has a parent !(RRRRKRfRRt _set_table(RR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRs   cC@s<|j\}}}|j||||jj|dS(N(RR Rt_validate_dest_table(RR;RRR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRscC@sO|j\}}}||f}||j|krK|j|j|ndS(N(RRRz(RRTRt table_keyRR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_remove_from_metadatas cC@s|jdkrt|trtggd|jd|jd|jd|jd|j d|j d|j |j |_||jj |j<|jj|n|jj|t|jtjrN|j\}}}||f}||jjkr4|jj|}y|j|||Wq4tjk r0q4Xn|jj|j|nGt|jdr|jj}|j|n|j}|j|dS( NRRRRRRRR( RRRR:RRRRRRRRRt _elementsRR$RfRRRRRRTRIR RRRRRRR (RRR;RRRRR ((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRs4  N(R3R4R5R6RRFRXR+R/RR7RRttarget_fullnameRRRR9RRR R RRRRR(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyROs,#  c       ! ! ,   t_NotAColumnExprcB@s-eZdZdZZedZRS(cC@stjd|jjdS(Ns7This %s cannot be used directly as a column expression.(RRKRR3(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_not_a_column_exprscC@s |jS(N(R(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRw scC@s |jS(N(R(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRw s(R3R4RRt self_groupR7t _from_objects(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRs  tDefaultGeneratorcB@sVeZdZdZeZeZdZedZ dZ ddZ e dZ RS(s'Base class for column *default* values.tdefault_generatorcC@s ||_dS(N(R(RR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRXscC@s1||_|jr!||j_n ||j_dS(N(RRRR(RR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRs  cK@s+|dkrt|}n|j||S(N(RR R(RRtR(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pytexecute"s cC@s-t|dddk r%|jjjSdSdS(s4Return the connectable associated with this default.RN(RRRR;Rt(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRt's N(R3R4R5R6RFt is_sequencetis_server_defaultRRRXRRR7Rt(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRs   RcB@steZdZdZejdZejdZejdZdZ dZ e e Z dZ RS(sA plain default value on a column. This could correspond to a constant, a callable function, or a SQL clause. :class:`.ColumnDefault` is generated automatically whenever the ``default``, ``onupdate`` arguments of :class:`.Column` are used. A :class:`.ColumnDefault` can be passed positionally as well. For example, the following:: Column('foo', Integer, default=50) Is equivalent to:: Column('foo', Integer, ColumnDefault(50)) cK@sett|j|t|tr7tjdntj|rX|j |}n||_ dS(sj"Construct a new :class:`.ColumnDefault`. :param arg: argument representing the default value. May be one of the following: * a plain non-callable Python value, such as a string, integer, boolean, or other simple type. The default value will be used as is each time. * a SQL expression, that is one which derives from :class:`.ColumnElement`. The SQL expression will be rendered into the INSERT or UPDATE statement, or in the case of a primary key column when RETURNING is not used may be pre-executed before an INSERT within a SELECT. * A Python callable. The function will be invoked for each new row subject to an INSERT or UPDATE. The callable must accept exactly zero or one positional arguments. The one-argument form will receive an instance of the :class:`.ExecutionContext`, which provides contextual information as to the current :class:`.Connection` in use as well as the current statement and parameters. s4ColumnDefault may not be a server-side default type.N( R`RRXRRRRHRtcallablet_maybe_wrap_callabletarg(RRR(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRXFs cC@stj|jS(N(RRR(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt is_callablehscC@st|jtS(N(RRR (R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pytis_clause_elementlscC@s|j o|j o|j S(N(R R!R(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt is_scalarps  c@sytjdt}Wntk r6fdSX|ddk rWt|dpZd}t|d|}|dkrfdS|dkrStjddS( sWrap callables that don't accept a context. This is to allow easy compatibility with default callables that aren't specific to accepting of a context. tno_selfc@sS(N((tctx(Ro(s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRwsiic@sS(N((R$(Ro(s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRwsisDColumnDefault Python function takes zero or one positional argumentsN(Rtget_callable_argspecRiRCRRRRH(RRotargspect defaultedt positionals((Ros[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRvs &   cC@s|jr dSdSdS(Ntcolumn_onupdatetcolumn_default(R(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt _visit_names cC@s d|jS(NsColumnDefault(%r)(R(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR+s(R3R4R5RXRR9R R!R"RR+R7R6R+(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR0s "   Rc B@seZdZdZeZdddedddedZe j dZ e j dZ e j ddZdZdZd Zed Zded Zded Zd ZRS(sRepresents a named database sequence. The :class:`.Sequence` object represents the name and configurational parameters of a database sequence. It also represents a construct that can be "executed" by a SQLAlchemy :class:`.Engine` or :class:`.Connection`, rendering the appropriate "next value" function for the target database and returning a result. The :class:`.Sequence` is typically associated with a primary key column:: some_table = Table( 'some_table', metadata, Column('id', Integer, Sequence('some_table_seq'), primary_key=True) ) When CREATE TABLE is emitted for the above :class:`.Table`, if the target platform supports sequences, a CREATE SEQUENCE statement will be emitted as well. For platforms that don't support sequences, the :class:`.Sequence` construct is ignored. .. seealso:: :class:`.CreateSequence` :class:`.DropSequence` tsequencec C@stt|jd| t|||_||_||_||_|dk rz|dkrz|j rz|j |_ }nt|||_ ||_ t |||_ |r|j |ndS(s, Construct a :class:`.Sequence` object. :param name: The name of the sequence. :param start: the starting index of the sequence. This value is used when the CREATE SEQUENCE command is emitted to the database as the value of the "START WITH" clause. If ``None``, the clause is omitted, which on most platforms indicates a starting value of 1. :param increment: the increment value of the sequence. This value is used when the CREATE SEQUENCE command is emitted to the database as the value of the "INCREMENT BY" clause. If ``None``, the clause is omitted, which on most platforms indicates an increment of 1. :param schema: Optional schema name for the sequence, if located in a schema other than the default. :param optional: boolean value, when ``True``, indicates that this :class:`.Sequence` object only needs to be explicitly generated on backends that don't provide another way to generate primary key identifiers. Currently, it essentially means, "don't create this sequence on the Postgresql backend, where the SERIAL keyword creates a sequence for us automatically". :param quote: boolean value, when ``True`` or ``False``, explicitly forces quoting of the schema name on or off. When left at its default of ``None``, normal quoting rules based on casing and reserved words take place. :param quote_schema: set the quoting preferences for the ``schema`` name. :param metadata: optional :class:`.MetaData` object which will be associated with this :class:`.Sequence`. A :class:`.Sequence` that is associated with a :class:`.MetaData` gains access to the ``bind`` of that :class:`.MetaData`, meaning the :meth:`.Sequence.create` and :meth:`.Sequence.drop` methods will make usage of that engine automatically. .. versionchanged:: 0.7 Additionally, the appropriate CREATE SEQUENCE/ DROP SEQUENCE DDL commands will be emitted corresponding to this :class:`.Sequence` when :meth:`.MetaData.create_all` and :meth:`.MetaData.drop_all` are invoked. Note that when a :class:`.Sequence` is applied to a :class:`.Column`, the :class:`.Sequence` is automatically associated with the :class:`.MetaData` object of that column's parent :class:`.Table`, when that association is made. The :class:`.Sequence` will then be subject to automatic CREATE SEQUENCE/DROP SEQUENCE corresponding to when the :class:`.Table` object itself is created or dropped, rather than that of the :class:`.MetaData` object overall. :param for_update: Indicates this :class:`.Sequence`, when associated with a :class:`.Column`, should be invoked for UPDATE statements on that column's table, rather than for INSERT statements, when no value is otherwise present for that column in the statement. RN(R`RRXRRtstartt incrementtoptionalRRRTRt_keyt _set_metadata( RRR-R.RR/R,RTRWR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRXs9   ! cC@stS(N(RF(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR scC@stS(N(RF(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR!sssqlalchemy.sql.functions.funccC@s|j|d|jS(sReturn a :class:`.next_value` function element which will render the appropriate increment function for this :class:`.Sequence` within any SQL expression. Rt(t next_valueRt(Rtfunc((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR2 scC@s*tt|j||j|jdS(N(R`RRRR(RR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRscC@s|j|jdS(N(R1RT(RRR;((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRscC@s ||_||jj|j when issuing DDL for this constraint. :param _create_rule: a callable which is passed the DDLCompiler object during compilation. Returns True or False to signal inline generation of this Constraint. The AddConstraint and DropConstraint DDL constructs provide DDLElement's more comprehensive "conditional DDL" approach that is passed a database connection when DDL is being issued. _create_rule is instead called during any CREATE TABLE compilation, where there may not be any transaction/connection in progress. However, it allows conditional compilation of the constraint even for backends which do not support addition of constraints through ALTER TABLE, which currently includes SQLite. _create_rule is used by some types to create constraints. Currently, its call signature is subject to change at any time. :param \**dialect_kw: Additional keyword arguments are dialect specific, and passed in the form ``_``. See the documentation regarding an individual dialect at :ref:`dialect_toplevel` for detail on documented arguments. N(RRRt _create_ruleRRR{(RRRRR>R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRXs (     cC@sDyt|jtr|jSWntk r0nXtjddS(NsdThis constraint is not bound to a table. Did you mean to call table.append_constraint(constraint) ?(RRR:tAttributeErrorRRK(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR;s  cC@s||_|jj|dS(N(RRcR(RR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRs cK@s tdS(N(tNotImplementedError(RRS((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR/sN( R3R4R5R6RRXR7R;RR/(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR=s  . cC@sCt|dr|j}nt|ts?tjdn|S(NRsschema.Column object expected(RRRRRRH(telement((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_to_schema_columns cC@sWt|dr|j}nt|tjtfsSd}tj||n|S(NRs1Element %r is not a string name or column element(RRRRRRRRH(RARU((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_to_schema_column_or_strings tColumnCollectionMixincB@seZdZdZRS(cG@st|_g|D]}t|^q|_|jrt|jdtrt|jdjtr|j|jdjndS(Ni( R RRCt_pending_colargsRRR;R:R$(RRRv((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRX s  cC@sJxC|jD]8}t|tjr2|j|}n|jj|q WdS(N(RERRRRvRR(RR;R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR s(R3R4RXR(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRDs tColumnCollectionConstraintcB@sMeZdZdZdZdZdZdZdZdZ RS(s-A constraint that proxies a ColumnCollection.cO@s$tj||tj||dS(sZ :param \*columns: A sequence of column names or Column objects. :param name: Optional, the in-database name of this constraint. :param deferrable: Optional bool. If set, emit DEFERRABLE or NOT DEFERRABLE when issuing DDL for this constraint. :param initially: Optional string. If set, emit INITIALLY when issuing DDL for this constraint. :param \**kw: other keyword arguments including dialect-specific arguments are propagated to the :class:`.Constraint` superclass. N(R=RXRD(RRRS((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRX scC@s$tj||tj||dS(N(R=RRD(RR;((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR* scC@s ||jkS(N(R(RR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt __contains__. scK@s@|jd|jd|jd|j|jj}|j|S(NRRR(RRRRRRR2(RRSRv((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR/1 scC@s|jj|S(N(Rtcontains_column(RR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRH6 sc@s#|jjfdjDS(Nc3@s|]}|VqdS(N((t.0RV(t ordered_dict(s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pys > s(Rt_datat_list(R((RJs[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt__iter__9 s cC@st|jjS(N(RRRK(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt__len__@ s( R3R4R5RXRRGR/RHRMRN(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRF s      tCheckConstraintcB@sJeZdZdddddedZdZeeZddZRS(slA table- or column-level CHECK constraint. Can be included in the definition of a Table or Column. c C@stt|j||||t||_|dk rJ|j|nt|rt|j}tg|D]!} t | j t ri| j ^qi} t | dkr|j| j qndS(sConstruct a CHECK constraint. :param sqltext: A string containing the constraint definition, which will be used verbatim, or a SQL expression construct. If given as a string, the object is converted to a :class:`.Text` object. If the textual string includes a colon character, escape this using a backslash:: CheckConstraint(r"foo ~ E'a(?\:b|c)d") :param name: Optional, the in-database name of the constraint. :param deferrable: Optional bool. If set, emit DEFERRABLE or NOT DEFERRABLE when issuing DDL for this constraint. :param initially: Optional string. If set, emit INITIALLY when issuing DDL for this constraint. iN(R`RORXRtsqltextRR$RRaRR;R:RRE( RRPRRRR;R>t _autoattachtcolsRvRI((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRXJ s $cC@st|jtrdSdSdS(Ntcheck_constrainttcolumn_check_constraint(RRR:(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR6q sc @sdk r9fd}tjji|}n j}t|djdjdjdjddt }j |S(Nc@s+jjj|r#j|jSdSdS(N(R;RvRHRVR(R(RR(s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRz sRRRR>R;RQ( RRtreplacement_traverseRPRORRRR>RFR2(RRRSRRPRv((RRs[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR/x s        N( R3R4R5RRiRXR6R7R/(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyROD s  %  Rc B@seZdZdZd d d d d eed d d ZedZdZ edZ edZ edZ dZ d d ZRS( sA table-level FOREIGN KEY constraint. Defines a single column or composite FOREIGN KEY ... REFERENCES constraint. For a no-frills, single column foreign key, adding a :class:`.ForeignKey` to the definition of a :class:`.Column` is a shorthand equivalent for an unnamed, single column :class:`.ForeignKeyConstraint`. Examples of foreign key configuration are in :ref:`metadata_foreignkeys`. tforeign_key_constraintc K@sltt|j|||| ||_||_| |_|jd kra|ratj dn||_ | |_ t j |_xt||D]s\} }t|d|d|jd|jd|jd|j d|jd|j d |jd |j|j |j| when issuing DDL for this constraint. Typical values include CASCADE, DELETE and RESTRICT. :param ondelete: Optional string. If set, emit ON DELETE when issuing DDL for this constraint. Typical values include CASCADE, DELETE and RESTRICT. :param deferrable: Optional bool. If set, emit DEFERRABLE or NOT DEFERRABLE when issuing DDL for this constraint. :param initially: Optional string. If set, emit INITIALLY when issuing DDL for this constraint. :param link_to_name: if True, the string name given in ``column`` is the rendered name of the referenced column, not its locally assigned ``key``. :param use_alter: If True, do not emit the DDL for this constraint as part of the CREATE TABLE definition. Instead, generate it via an ALTER TABLE statement issued after the full collection of tables have been created, and drop it via an ALTER TABLE statement before the full collection of tables are dropped. This is shorthand for the usage of :class:`.AddConstraint` and :class:`.DropConstraint` applied as "after-create" and "before-drop" events on the MetaData object. This is normally used to generate/drop constraints on objects that are mutually dependent on each other. :param match: Optional string. If set, emit MATCH when issuing DDL for this constraint. Typical values include SIMPLE, PARTIAL and FULL. :param \**dialect_kw: Additional keyword arguments are dialect specific, and passed in the form ``_``. See the documentation regarding an individual dialect at :ref:`dialect_toplevel` for detail on documented arguments. .. versionadded:: 0.9.2 s$Alterable Constraint requires a nameRRRRRRRRRiN(R`RRXRRRRRRRHRRRt OrderedDictRtzipRRRtdialect_kwargsR$RRR;(RRt refcolumnsRRRRRRRRR;RRtrefcol((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRX s:8             cC@s&x|jjD] }|jSWdSdS(N(RtvaluesRR(Rtelem((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR scC@stg|jjD]}|j^q}d|krt|dkrt|dd!\}}tjd|j |j ||fndS(NiiisJForeignKeyConstraint on %s(%s) refers to multiple remote tables: %s and %s( RaRR\RRRRxRRHRht_col_description(RR;R]t table_keystelem0telem1((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR s(cC@sdj|jS(Ns, (RR(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR^ scC@s t|jS(N(RR(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR scC@st|jjS(N(RRR\(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pytelements sc@s1tt|j|jx|jjD]\}}t|tjryj |}Wqt k rt j dj |fqXnt|d s|j|k r3|j|q3q3W|jr-fd}tjjdtj|d|tjjdtj|d|ndS(NsQCan't create ForeignKeyConstraint on table '%s': no column named '%s' is present.Rc@s t|dko|jjS(NRI(RaRqtsupports_alter(RRRRtRS(R;(s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRc0 st after_createtont before_drop(R`RRRRtitemsRRRRvtKeyErrorRRHRRRR$RRRjRTRt AddConstrainttDropConstraint(RR;RRRc((R;s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR s&   cK@stg|jjD]}|jj^qg|jjD]}|jd|^q8d|jd|jd|jd|j d|j d|j d|j d |j }x<t|jj|jjD]\}}|j|qW|j|S( NRRRRRRRRR(RRR\RRVRRRRRRRRRRXR2(RRRSRtfkctself_fktother_fk((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR/9 s"%+         N(R3R4R5R6RRFRXR7RRR^RRbRR/(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR s    \  RecB@s/eZdZdZdZdZdZRS(s A table-level PRIMARY KEY constraint. The :class:`.PrimaryKeyConstraint` object is present automatically on any :class:`.Table` object; it is assigned a set of :class:`.Column` objects corresponding to those marked with the :paramref:`.Column.primary_key` flag:: >>> my_table = Table('mytable', metadata, ... Column('id', Integer, primary_key=True), ... Column('version_id', Integer, primary_key=True), ... Column('data', String(50)) ... ) >>> my_table.primary_key PrimaryKeyConstraint( Column('id', Integer(), table=, primary_key=True, nullable=False), Column('version_id', Integer(), table=, primary_key=True, nullable=False) ) The primary key of a :class:`.Table` can also be specified by using a :class:`.PrimaryKeyConstraint` object explicitly; in this mode of usage, the "name" of the constraint can also be specified, as well as other options which may be recognized by dialects:: my_table = Table('mytable', metadata, Column('id', Integer), Column('version_id', Integer), Column('data', String(50)), PrimaryKeyConstraint('id', 'version_id', name='mytable_pk') ) The two styles of column-specification should generally not be mixed. An warning is emitted if the columns present in the :class:`.PrimaryKeyConstraint` don't match the columns that were marked as ``primary_key=True``, if both are present; in this case, the columns are taken strictly from the :class:`.PrimaryKeyConstraint` declaration, and those columns otherwise marked as ``primary_key=True`` are ignored. This behavior is intended to be backwards compatible with previous behavior. .. versionchanged:: 0.9.2 Using a mixture of columns within a :class:`.PrimaryKeyConstraint` in addition to columns marked as ``primary_key=True`` now emits a warning if the lists don't match. The ultimate behavior of ignoring those columns marked with the flag only is currently maintained for backwards compatibility; this warning may raise an exception in a future release. For the use case where specific options are to be specified on the :class:`.PrimaryKeyConstraint`, but the usual style of using ``primary_key=True`` flags is still desirable, an empty :class:`.PrimaryKeyConstraint` may be specified, which will take on the primary key column collection from the :class:`.Table` based on the flags:: my_table = Table('mytable', metadata, Column('id', Integer, primary_key=True), Column('version_id', Integer, primary_key=True), Column('data', String(50)), PrimaryKeyConstraint(name='mytable_pk', mssql_clustered=True) ) .. versionadded:: 0.9.2 an empty :class:`.PrimaryKeyConstraint` may now be specified for the purposes of establishing keyword arguments with the constraint, independently of the specification of "primary key" columns within the :class:`.Table` itself; columns marked as ``primary_key=True`` will be gathered into the empty constraint's column collection. tprimary_key_constraintc C@sLtt|j||j|k rT|jj|j||_|jj|ng|jD]}|jr^|^q^}|jr|rt |t |jj krt j d|j djd|Ddjd|jDdjd|jDfg|(nx#|jD]}t|_t|_qW|jj|dS(NsTable '%s' specifies columns %s as primary_key=True, not matching locally specified columns %s; setting the current primary key columns to %s. This warning may become an exception in a future releases, cs@s|]}d|jVqdS(s'%s'N(R(RIRv((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pys scs@s|]}d|jVqdS(s'%s'N(R(RIRv((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pys scs@s|]}d|jVqdS(s'%s'N(R(RIRv((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pys s(R`ReRR~RctdiscardRRvRRaR\RRRRRiRFRtextend(RR;Rvt table_pks((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR s& %!!   cC@s>x|D]}t|_qW|jj||j|jdS(sDrepopulate this :class:`.PrimaryKeyConstraint` given a set of columns. Existing columns in the table that are marked as primary_key=True are maintained. Also fires a new event. This is basically like putting a whole new :class:`.PrimaryKeyConstraint` object on the parent :class:`.Table` object without actually replacing the object. The ordering of the given list of columns is also maintained; these columns will be appended to the list of columns after any which are already present. N(RiR~RRpR$R;(RRR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_reload s  cC@s|jj|dS(N(RR(RR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR s(R3R4R5R6RRrR(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyReN s H  RcB@seZdZdZRS(sA table-level UNIQUE constraint. Defines a single column or composite UNIQUE constraint. For a no-frills, single column constraint, adding ``unique=True`` to the ``Column`` definition is a shorthand equivalent for an unnamed, single column UniqueConstraint. tunique_constraint(R3R4R5R6(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR sRcB@sVeZdZdZdZdZedZddZ ddZ dZ RS( s A table-level INDEX. Defines a composite (one or more column) INDEX. E.g.:: sometable = Table("sometable", metadata, Column("name", String(50)), Column("address", String(100)) ) Index("some_index", sometable.c.name) For a no-frills, single column index, adding :class:`.Column` also supports ``index=True``:: sometable = Table("sometable", metadata, Column("name", String(50), index=True) ) For a composite index, multiple columns can be specified:: Index("some_index", sometable.c.name, sometable.c.address) Functional indexes are supported as well, typically by using the :data:`.func` construct in conjunction with table-bound :class:`.Column` objects:: Index("some_index", func.lower(sometable.c.name)) .. versionadded:: 0.8 support for functional and expression-based indexes. An :class:`.Index` can also be manually associated with a :class:`.Table`, either through inline declaration or using :meth:`.Table.append_constraint`. When this approach is used, the names of the indexed columns can be specified as strings:: Table("sometable", metadata, Column("name", String(50)), Column("address", String(100)), Index("some_index", "name", "address") ) To support functional or expression-based indexes in this form, the :func:`.text` construct may be used:: from sqlalchemy import text Table("sometable", metadata, Column("name", String(50)), Column("address", String(100)), Index("some_index", text("lower(name)")) ) .. versionadded:: 0.9.5 the :func:`.text` construct may be used to specify :class:`.Index` expressions, provided the :class:`.Index` is explicitly associated with the :class:`.Table`. .. seealso:: :ref:`schema_indexes` - General information on :class:`.Index`. :ref:`postgresql_indexes` - PostgreSQL-specific options available for the :class:`.Index` construct. :ref:`mysql_indexes` - MySQL-specific options available for the :class:`.Index` construct. :ref:`mssql_indexes` - MSSQL-specific options available for the :class:`.Index` construct. RcO@sd|_g}xj|D]b}t|ts;|j|qg}tj|ii|jd6|r|j|dqqW||_t||j dd|_ |j dt |_ |j |tj||dS(sConstruct an index object. :param name: The name of the index :param \*expressions: Column expressions to include in the index. The expressions are normally instances of :class:`.Column`, but may also be arbitrary SQL expressions which ultimately refer to a :class:`.Column`. :param unique=False: Keyword only argument; if True, create a unique index. :param quote=None: Keyword only argument; whether to apply quoting to the name of the index. Works in the same manner as that of :paramref:`.Column.quote`. :param \**kw: Additional keyword arguments not mentioned above are dialect specific, and passed in the form ``_``. See the documentation regarding an individual dialect at :ref:`dialect_toplevel` for detail on documented arguments. RiR,RN(RR;RR RRttraverset expressionsRRERRFRR{RDRX(RRRuRSRtexprRR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRX2 s    cC@stj|||jdk rY||jk rYtjd|j|jj|jfn||_xE|jD]:}|j|jkrltjd||jjfqlqlW|j j |gt j |j |jD]'\}}t|tr|n|^q|_ dS(NsKIndex '%s' is against table '%s', and cannot be associated with table '%s'.s&Column '%s' is not part of table '%s'.(RDRR;RRRHRRRRbRRt zip_longestRuRR (RR;RvRvtcolexpr((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRb s"   cC@s |jjS(s2Return the connectable associated with this Index.(R;Rt(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRt~ scC@s2|dkrt|}n|jtj||S(sIssue a ``CREATE`` statement for this :class:`.Index`, using the given :class:`.Connectable` for connectivity. .. seealso:: :meth:`.MetaData.create_all`. N(RR RRR(RRt((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR s cC@s2|dkrt|}n|jtj|dS(sIssue a ``DROP`` statement for this :class:`.Index`, using the given :class:`.Connectable` for connectivity. .. seealso:: :meth:`.MetaData.drop_all`. N(RR RRR(RRt((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR s cC@sSddjt|jgg|jD]}t|^q"|jrJdgpMgS(Ns Index(%s)s, s unique=True(RRRRuR(Rte((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR+ s/N( R3R4R5R6RXRR7RtRRRR+(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR sI 0   six_%(column_0_label)stixtMetaDatacB@s eZdZdZdeddedZdZdZ dZ dZ dZ dZ dZd Zd Zejd d ZeeeZd ZdZedZddedeedZdZddedZddedZRS(sA collection of :class:`.Table` objects and their associated schema constructs. Holds a collection of :class:`.Table` objects as well as an optional binding to an :class:`.Engine` or :class:`.Connection`. If bound, the :class:`.Table` objects in the collection and their columns may participate in implicit SQL execution. The :class:`.Table` objects themselves are stored in the :attr:`.MetaData.tables` dictionary. :class:`.MetaData` is a thread-safe object for read operations. Construction of new tables within a single :class:`.MetaData` object, either explicitly or via reflection, may not be completely thread-safe. .. seealso:: :ref:`metadata_describing` - Introduction to database metadata RTcC@stj|_t|||_||_t|_i|_t j t |_ ||_ |rtjd|stjdn|jndS(sCreate a new MetaData object. :param bind: An Engine or Connection to bind to. May also be a string or URL instance, these are passed to create_engine() and this MetaData will be bound to the resulting engine. :param reflect: Optional, automatically load all tables from the bound database. Defaults to False. ``bind`` is required when this option is set. .. deprecated:: 0.8 Please use the :meth:`.MetaData.reflect` method. :param schema: The default schema to use for the :class:`.Table`, :class:`.Sequence`, and other objects associated with this :class:`.MetaData`. Defaults to ``None``. :param quote_schema: Sets the ``quote_schema`` flag for those :class:`.Table`, :class:`.Sequence`, and other objects which make usage of the local ``schema`` name. :param naming_convention: a dictionary referring to values which will establish default naming conventions for :class:`.Constraint` and :class:`.Index` objects, for those objects which are not given a name explicitly. The keys of this dictionary may be: * a constraint or Index class, e.g. the :class:`.UniqueConstraint`, :class:`.ForeignKeyConstraint` class, the :class:`.Index` class * a string mnemonic for one of the known constraint classes; ``"fk"``, ``"pk"``, ``"ix"``, ``"ck"``, ``"uq"`` for foreign key, primary key, index, check, and unique constraint, respectively. * the string name of a user-defined "token" that can be used to define new naming tokens. The values associated with each "constraint class" or "constraint mnemonic" key are string naming templates, such as ``"uq_%(table_name)s_%(column_0_name)s"``, which describe how the name should be composed. The values associated with user-defined "token" keys should be callables of the form ``fn(constraint, table)``, which accepts the constraint/index object and :class:`.Table` as arguments, returning a string result. The built-in names are as follows, some of which may only be available for certain types of constraint: * ``%(table_name)s`` - the name of the :class:`.Table` object associated with the constraint. * ``%(referred_table_name)s`` - the name of the :class:`.Table` object associated with the referencing target of a :class:`.ForeignKeyConstraint`. * ``%(column_0_name)s`` - the name of the :class:`.Column` at index position "0" within the constraint. * ``%(column_0_label)s`` - the label of the :class:`.Column` at index position "0", e.g. :attr:`.Column.label` * ``%(column_0_key)s`` - the key of the :class:`.Column` at index position "0", e.g. :attr:`.Column.key` * ``%(referred_column_0_name)s`` - the name of a :class:`.Column` at index position "0" referenced by a :class:`.ForeignKeyConstraint`. * ``%(constraint_name)s`` - a special key that refers to the existing name given to the constraint. When this key is present, the :class:`.Constraint` object's existing name will be replaced with one that is composed from template string that uses this token. When this token is present, it is required that the :class:`.Constraint` is given an expicit name ahead of time. * user-defined: any additional token may be implemented by passing it along with a ``fn(constraint, table)`` callable to the naming_convention dictionary. .. versionadded:: 0.9.2 .. seealso:: :ref:`constraint_naming_conventions` - for detailed usage examples. s;reflect=True is deprecate; please use the reflect() method.s8A bind must be supplied in conjunction with reflect=TrueN(Rt immutabledictRIRRtnaming_conventionRat_schemasR4t collectionst defaultdictRRRtRGRRHtreflect(RRtRRRWR}((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRX s`      cC@s d|jS(NsMetaData(bind=%r)(Rt(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR+G scC@s+t|tjs|j}n||jkS(N(RRRRVRI(Rt table_or_key((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRGJ s cC@sBt||}tj|j|||r>|jj|ndS(N(Rtdictt __setitem__RIR~R(RRRR;RV((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRNO scC@st||}tj|j|d}|dk rWx!|jD]}|j|q=Wn|jrtg|jj D]}|j dk rs|j ^qs|_ndS(N( RRRERIRRfRR~RaR\R(RRRRVtremovedRtt((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRQU s  cC@s6i|jd6|jd6|jd6|jd6|jd6S(NRIRtschemast sequencestfk_memos(RIRR~R4R(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt __getstate__` s     cC@sN|d|_|d|_d|_|d|_|d|_|d|_dS(NRIRRRR(RIRRt_bindR4R~R(Rtstate((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt __setstate__g s      cC@s |jdk S(s:True if this MetaData is bound to an Engine or Connection.N(RR(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pytis_boundo scC@s|jS(s An :class:`.Engine` or :class:`.Connection` to which this :class:`.MetaData` is bound. Typically, a :class:`.Engine` is assigned to this attribute so that "implicit execution" may be used, or alternatively as a means of providing engine binding information to an ORM :class:`.Session` object:: engine = create_engine("someurl://") metadata.bind = engine .. seealso:: :ref:`dbengine_implicit` - background on "bound metadata" (R(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRtt sssqlalchemy.engine.urlcC@s>t|tj|jfr1tj||_n ||_dS(s;Bind this MetaData to an Engine, Connection, string or URL.N(RRRtURLt sqlalchemyt create_engineR(RturlRt((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt_bind_to scC@s.tj|j|jj|jjdS(s+Clear all Table objects from this MetaData.N(RtclearRIR~R(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR s cC@s|j|j|jdS(s1Remove the given Table object from this MetaData.N(RQRR(RR;((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRz scC@stj|jjS(sReturns a list of :class:`.Table` objects sorted in order of foreign key dependency. The sorting will place :class:`.Table` objects that have dependencies first, before the dependencies themselves, representing the order in which they can be created. To get the order in which the tables would be dropped, use the ``reversed()`` Python built-in. .. seealso:: :attr:`.MetaData.tables` :meth:`.Inspector.get_table_names` (Rt sort_tablesRIR\(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt sorted_tables sc K@s|d krt|}n|j\}itd6|d6|d6|d6} | j||d krq|j}n|d k r|| d_``. See the documentation regarding an individual dialect at :ref:`dialect_toplevel` for detail on documented arguments. .. versionadded:: 0.9.2 - Added :paramref:`.MetaData.reflect.**dialect_kwargs` to support dialect-level reflection options for all :class:`.Table` objects reflected. RYRZR=R[RR s%s.%ss schema '%s'RsACould not reflect: requested table(s) not available in %s%s: (%s)s, N(RR tconnectRiR7RRt OrderedSettenginet table_namesRqtget_view_namesRaRIRXRRRKRRR:(RRtRtviewstonlyR=R[RYtconnt reflect_optst availableRtavailable_w_schematcurrenttschnametloadtmissingts((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR sT<         & !%% c@s6fd}tj|d|jdd|dS(s}Append a DDL event listener to this ``MetaData``. .. deprecated:: 0.7 See :class:`.DDLEvents`. c@s$|d}t||d|dS(NRI(R(RR RSRI(R(s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR- s RRRN(RRjR(RRRR((Rs[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR& scC@s>|dkrt|}n|jtj|d|d|dS(syCreate all tables stored in this metadata. Conditional by default, will not attempt to recreate tables already present in the target database. :param bind: A :class:`.Connectable` used to access the database; if None, uses the existing bind on this ``MetaData``, if any. :param tables: Optional list of ``Table`` objects, which is a subset of the total tables in the ``MetaData`` (others are ignored). :param checkfirst: Defaults to True, don't issue CREATEs for tables already present in the target database. RRIN(RR RRR(RRtRIR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyt create_all3 s   cC@s>|dkrt|}n|jtj|d|d|dS(stDrop all tables stored in this metadata. Conditional by default, will not attempt to drop tables not present in the target database. :param bind: A :class:`.Connectable` used to access the database; if None, uses the existing bind on this ``MetaData``, if any. :param tables: Optional list of ``Table`` objects, which is a subset of the total tables in the ``MetaData`` (others are ignored). :param checkfirst: Defaults to True, only issue DROPs for tables confirmed to be present in the target database. RRIN(RR RRR(RRtRIR((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pytdrop_allN s   N(R3R4R5R6RRFtDEFAULT_NAMING_CONVENTIONRXRIR+RGRNRQRRRRtRR5RR7RRzRRiRRRR(((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyR{ s2  o           t tThreadLocalMetaDatacB@s_eZdZdZdZdZejddZe eeZdZ dZ RS(sA MetaData variant that presents a different ``bind`` in every thread. Makes the ``bind`` property of the MetaData a thread-local value, allowing this collection of tables to be bound to different ``Engine`` implementations or connections in each thread. The ThreadLocalMetaData starts off bound to None in each thread. Binds must be made explicitly by assigning to the ``bind`` property or using ``connect()``. You can also re-bind dynamically multiple times per thread, just like a regular ``MetaData``. RTcC@s2tjj|_i|_tt|jdS(s Construct a ThreadLocalMetaData.N(Rt threadingtlocaltcontextt_ThreadLocalMetaData__enginesR`RRX(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRXz s cC@st|jddS(sThe bound Engine or Connection for this thread. This property may be assigned an Engine or Connection, or assigned a string or URL to automatically create a basic Engine for this bind with ``create_engine()``.t_engineN(RRR(R((s[/var/www/send.findwatt.com/datamanager/lib/python2.7/site-packages/sqlalchemy/sql/schema.pyRt sssqlalchemy.engine.urlcC@st|tj|jfrry|j||j_Wqtk rntj |}||j|<||j_qXn+||jkr||j|s` "@     4 !i 2%G  4H