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Fixed #23153: Properly recreate spatialite triggers on alter table

This commit is contained in:
Andrew Godwin 2014-08-04 13:15:32 +10:00
parent c06e124b5e
commit b508c1c317
1 changed files with 48 additions and 9 deletions
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43
django/contrib/gis/db/backends/spatialite/schema.py
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@ -6,7 +6,15 @@ class SpatialiteSchemaEditor(DatabaseSchemaEditor):
sql_add_spatial_index = "SELECT CreateSpatialIndex(%(table)s, %(column)s)"
sql_drop_spatial_index = "DROP TABLE idx_%(table)s_%(column)s"
sql_remove_geometry_metadata = "SELECT DiscardGeometryColumn(%(table)s, %(column)s)"
sql_update_geometry_columns = "UPDATE geometry_columns SET f_table_name = %(new_table)s WHERE f_table_name = %(old_table)s"
sql_discard_geometry_columns = "DELETE FROM %(geom_table)s WHERE f_table_name = %(table)s"
sql_update_geometry_columns = "UPDATE %(geom_table)s SET f_table_name = %(new_table)s WHERE f_table_name = %(old_table)s"
geometry_tables = [
"geometry_columns",
"geometry_columns_auth",
"geometry_columns_time",
"geometry_columns_statistics",
]
def __init__(self, *args, **kwargs):
super(SpatialiteSchemaEditor, self).__init__(*args, **kwargs)
@ -68,6 +76,14 @@ class SpatialiteSchemaEditor(DatabaseSchemaEditor):
for field in model._meta.local_fields:
if isinstance(field, GeometryField):
self.remove_geometry_metadata(model, field)
# Make sure all geom stuff is gone
for geom_table in self.geometry_tables:
self.execute(
self.sql_discard_geometry_columns % {
"geom_table": geom_table,
"table": self.quote_name(model._meta.db_table),
}
)
super(SpatialiteSchemaEditor, self).delete_model(model, **kwargs)
def add_field(self, model, field):
@ -82,15 +98,38 @@ class SpatialiteSchemaEditor(DatabaseSchemaEditor):
super(SpatialiteSchemaEditor, self).add_field(model, field)
def alter_db_table(self, model, old_db_table, new_db_table):
from django.contrib.gis.db.models.fields import GeometryField
# Remove geometry-ness from temp table
for field in model._meta.local_fields:
if isinstance(field, GeometryField):
self.execute(
self.sql_remove_geometry_metadata % {
"table": self.quote_name(old_db_table),
"column": self.quote_name(field.column),
}
)
# Alter table
super(SpatialiteSchemaEditor, self).alter_db_table(model, old_db_table, new_db_table)
# Repoint any straggler names
for geom_table in self.geometry_tables:
self.execute(
self.sql_update_geometry_columns % {
"geom_table": geom_table,
"old_table": self.quote_name(old_db_table),
"new_table": self.quote_name(new_db_table),
}
)
# Also rename spatial index tables
# Re-add geometry-ness and rename spatial index tables
for field in model._meta.local_fields:
if isinstance(field, GeometryField):
self.execute(self.sql_add_geometry_column % {
"table": self.geo_quote_name(new_db_table),
"column": self.geo_quote_name(field.column),
"srid": field.srid,
"geom_type": self.geo_quote_name(field.geom_type),
"dim": field.dim,
"null": int(not field.null),
})
if getattr(field, 'spatial_index', False):
self.execute(self.sql_rename_table % {
"old_table": self.quote_name("idx_%s_%s" % (old_db_table, field.column)),