| 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 |