/django/contrib/gis/db/backends/oracle/creation.py
Python | 42 lines | 33 code | 7 blank | 2 comment | 2 complexity | 1cfe54127da1988e0dfbe81d5b06ad41 MD5 | raw file
Possible License(s): BSD-3-Clause
- from django.db.backends.oracle.creation import DatabaseCreation
- from django.db.backends.util import truncate_name
- class OracleCreation(DatabaseCreation):
- def sql_indexes_for_field(self, model, f, style):
- "Return any spatial index creation SQL for the field."
- from django.contrib.gis.db.models.fields import GeometryField
- output = super(OracleCreation, self).sql_indexes_for_field(model, f, style)
- if isinstance(f, GeometryField):
- gqn = self.connection.ops.geo_quote_name
- qn = self.connection.ops.quote_name
- db_table = model._meta.db_table
- output.append(style.SQL_KEYWORD('INSERT INTO ') +
- style.SQL_TABLE('USER_SDO_GEOM_METADATA') +
- ' (%s, %s, %s, %s)\n ' % tuple(map(qn, ['TABLE_NAME', 'COLUMN_NAME', 'DIMINFO', 'SRID'])) +
- style.SQL_KEYWORD(' VALUES ') + '(\n ' +
- style.SQL_TABLE(gqn(db_table)) + ',\n ' +
- style.SQL_FIELD(gqn(f.column)) + ',\n ' +
- style.SQL_KEYWORD("MDSYS.SDO_DIM_ARRAY") + '(\n ' +
- style.SQL_KEYWORD("MDSYS.SDO_DIM_ELEMENT") +
- ("('LONG', %s, %s, %s),\n " % (f._extent[0], f._extent[2], f._tolerance)) +
- style.SQL_KEYWORD("MDSYS.SDO_DIM_ELEMENT") +
- ("('LAT', %s, %s, %s)\n ),\n" % (f._extent[1], f._extent[3], f._tolerance)) +
- ' %s\n );' % f.srid)
- if f.spatial_index:
- # Getting the index name, Oracle doesn't allow object
- # names > 30 characters.
- idx_name = truncate_name('%s_%s_id' % (db_table, f.column), 30)
- output.append(style.SQL_KEYWORD('CREATE INDEX ') +
- style.SQL_TABLE(qn(idx_name)) +
- style.SQL_KEYWORD(' ON ') +
- style.SQL_TABLE(qn(db_table)) + '(' +
- style.SQL_FIELD(qn(f.column)) + ') ' +
- style.SQL_KEYWORD('INDEXTYPE IS ') +
- style.SQL_TABLE('MDSYS.SPATIAL_INDEX') + ';')
- return output