40 lines
1.5 KiB
Python
40 lines
1.5 KiB
Python
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from django.contrib.gis.db.backend import SpatialBackend
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from django.db.models.query import insert_query
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if SpatialBackend.oracle:
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from django.db import connection
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from django.db.models.sql.subqueries import InsertQuery
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class OracleGeoInsertQuery(InsertQuery):
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def insert_values(self, insert_values, raw_values=False):
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"""
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This routine is overloaded from InsertQuery so that no parameter is
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passed into cx_Oracle for NULL geometries. The reason is that
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cx_Oracle has no way to bind Oracle object values (like
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MDSYS.SDO_GEOMETRY).
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"""
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placeholders, values = [], []
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for field, val in insert_values:
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if hasattr(field, 'get_placeholder'):
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ph = field.get_placeholder(val)
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else:
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ph = '%s'
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placeholders.append(ph)
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self.columns.append(field.column)
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# If 'NULL' for the placeholder, omit appending None
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# to the values list (which is used for db params).
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if not ph == 'NULL':
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values.append(val)
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if raw_values:
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self.values.extend(values)
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else:
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self.params += tuple(values)
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self.values.extend(placeholders)
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def insert_query(model, values, return_id=False, raw_values=False):
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query = OracleGeoInsertQuery(model, connection)
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query.insert_values(values, raw_values)
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return query.execute_sql(return_id)
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