django.contrib.gis.db.backends.postgis.introspection.PostGISIntrospection

class documentation

class PostGISIntrospection(DatabaseIntrospection): (source)

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Undocumented

Method get_field_type Hook for a database backend to use the cursor description to match a Django field type to a database column.
Method get_geometry_type The geometry type OID used by PostGIS does not indicate the particular type of field that a geometry column is (e.g., whether it's a PointField or a PolygonField). Thus, this routine queries the PostGIS metadata tables to determine the geometry type.
Class Variable ignored_tables Undocumented
Instance Variable postgis_oid_lookup Undocumented

Inherited from DatabaseIntrospection:

Method get_constraints Retrieve any constraints or keys (unique, pk, fk, check, index) across one or more columns. Also retrieve the definition of expression-based indexes.
Method get_relations Return a dictionary of {field_name: (field_name_other_table, other_table)} representing all foreign keys in the given table.
Method get_sequences Return a list of introspected sequences for table_name. Each sequence is a dict: {'table': <table_name>, 'column': <column_name>}. An optional 'name' key can be added if the backend supports named sequences.
Method get_table_description Return a description of the table with the DB-API cursor.description interface.
Method get_table_list Return a list of table and view names in the current database.
Class Variable data_types_reverse Undocumented
Class Variable index_default_access_method Undocumented

Inherited from BaseDatabaseIntrospection (via DatabaseIntrospection):

Method __init__ Undocumented
Method django_table_names Return a list of all table names that have associated Django models and are in INSTALLED_APPS.
Method get_migratable_models Undocumented
Method get_primary_key_column Return the name of the primary key column for the given table.
Method identifier_converter Apply a conversion to the identifier for the purposes of comparison.
Method installed_models Return a set of all models represented by the provided list of table names.
Method sequence_list Return a list of information about all DB sequences for all models in all apps.
Method table_names Return a list of names of all tables that exist in the database. Sort the returned table list by Python's default sorting. Do NOT use the database's ORDER BY here to avoid subtle differences in sorting order between databases.
Instance Variable connection Undocumented
def get_field_type(self, data_type, description): (source)
overrides django.db.backends.postgresql.introspection.DatabaseIntrospection.get_field_type

Hook for a database backend to use the cursor description to match a Django field type to a database column. For Oracle, the column data_type on its own is insufficient to distinguish between a FloatField and IntegerField, for example.

def get_geometry_type(self, table_name, description): (source)

The geometry type OID used by PostGIS does not indicate the particular type of field that a geometry column is (e.g., whether it's a PointField or a PolygonField). Thus, this routine queries the PostGIS metadata tables to determine the geometry type.

ignored_tables = (source)
overrides django.db.backends.postgresql.introspection.DatabaseIntrospection.ignored_tables

Undocumented

postgis_oid_lookup = (source)

Undocumented