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Code Issues 32 Releases Wiki Activity

Added SQLite backend which passes all current tests

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This commit is contained in:
Andrew Godwin
2012-09-07 12:51:11 -04:00
parent 7e81213b5a
commit d683263f97
8 changed files with 199 additions and 11 deletions
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36
django/db/backends/sqlite3/introspection.py
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@@ -154,7 +154,7 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
if len(info) != 1:
continue
name = info[0][2] # seqno, cid, name
indexes[name] = {'primary_key': False,
indexes[name] = {'primary_key': indexes.get(name, {}).get("primary_key", False),
'unique': unique}
return indexes
@@ -182,3 +182,37 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
'null_ok': not field[3],
'pk': field[5] # undocumented
} for field in cursor.fetchall()]
def get_constraints(self, cursor, table_name):
"""
Retrieves any constraints or keys (unique, pk, fk, check, index) across one or more columns.
"""
constraints = {}
# Get the index info
cursor.execute("PRAGMA index_list(%s)" % self.connection.ops.quote_name(table_name))
for number, index, unique in cursor.fetchall():
# Get the index info for that index
cursor.execute('PRAGMA index_info(%s)' % self.connection.ops.quote_name(index))
for index_rank, column_rank, column in cursor.fetchall():
if index not in constraints:
constraints[index] = {
"columns": set(),
"primary_key": False,
"unique": bool(unique),
"foreign_key": False,
"check": False,
"index": True,
}
constraints[index]['columns'].add(column)
# Get the PK
pk_column = self.get_primary_key_column(cursor, table_name)
if pk_column:
constraints["__primary__"] = {
"columns": set([pk_column]),
"primary_key": True,
"unique": False, # It's not actually a unique constraint
"foreign_key": False,
"check": False,
"index": False,
}
return constraints