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Fixed #11050 -- Oracle now passes all but one introspection unit test. 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@10743 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Matt Boersma 2009-05-11 20:55:40 +00:00
parent 369568b8c7
commit 7b81dd4779
1 changed files with 27 additions and 30 deletions
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57
django/db/backends/oracle/introspection.py
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@ -24,17 +24,20 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
def get_table_list(self, cursor):
"Returns a list of table names in the current database."
cursor.execute("SELECT TABLE_NAME FROM USER_TABLES")
return [row[0].upper() for row in cursor.fetchall()]
return [row[0].lower() for row in cursor.fetchall()]
def get_table_description(self, cursor, table_name):
"Returns a description of the table, with the DB-API cursor.description interface."
cursor.execute("SELECT * FROM %s WHERE ROWNUM < 2" % self.connection.ops.quote_name(table_name))
return cursor.description
description = []
for desc in cursor.description:
description.append((desc[0].lower(),) + desc[1:])
return description
def table_name_converter(self, name):
"Table name comparison is case insensitive under Oracle"
return name.upper()
return name.lower()
def _name_to_index(self, cursor, table_name):
"""
Returns a dictionary of {field_name: field_index} for the given table.
@ -76,33 +79,27 @@ class DatabaseIntrospection(BaseDatabaseIntrospection):
# This query retrieves each index on the given table, including the
# first associated field name
# "We were in the nick of time; you were in great peril!"
sql = """
WITH primarycols AS (
SELECT user_cons_columns.table_name, user_cons_columns.column_name, 1 AS PRIMARYCOL
FROM user_cons_columns, user_constraints
WHERE user_cons_columns.constraint_name = user_constraints.constraint_name AND
user_constraints.constraint_type = 'P' AND
user_cons_columns.table_name = %s),
uniquecols AS (
SELECT user_ind_columns.table_name, user_ind_columns.column_name, 1 AS UNIQUECOL
FROM user_indexes, user_ind_columns
WHERE uniqueness = 'UNIQUE' AND
user_indexes.index_name = user_ind_columns.index_name AND
user_ind_columns.table_name = %s)
SELECT allcols.column_name, primarycols.primarycol, uniquecols.UNIQUECOL
FROM (SELECT column_name FROM primarycols UNION SELECT column_name FROM
uniquecols) allcols,
primarycols, uniquecols
WHERE allcols.column_name = primarycols.column_name (+) AND
allcols.column_name = uniquecols.column_name (+)
"""
cursor.execute(sql, [table_name, table_name])
sql = """\
SELECT LOWER(all_tab_cols.column_name) AS column_name,
CASE user_constraints.constraint_type
WHEN 'P' THEN 1 ELSE 0
END AS is_primary_key,
CASE user_indexes.uniqueness
WHEN 'UNIQUE' THEN 1 ELSE 0
END AS is_unique
FROM all_tab_cols, user_cons_columns, user_constraints, user_ind_columns, user_indexes
WHERE all_tab_cols.column_name = user_cons_columns.column_name (+)
AND all_tab_cols.table_name = user_cons_columns.table_name (+)
AND user_cons_columns.constraint_name = user_constraints.constraint_name (+)
AND user_constraints.constraint_type (+) = 'P'
AND user_ind_columns.column_name (+) = all_tab_cols.column_name
AND user_ind_columns.table_name (+) = all_tab_cols.table_name
AND user_indexes.uniqueness (+) = 'UNIQUE'
AND user_indexes.index_name (+) = user_ind_columns.index_name
AND all_tab_cols.table_name = UPPER(%s)
"""
cursor.execute(sql, [table_name])
indexes = {}
for row in cursor.fetchall():
# row[1] (idx.indkey) is stored in the DB as an array. It comes out as
# a string of space-separated integers. This designates the field
# indexes (1-based) of the fields that have indexes on the table.
# Here, we skip any indexes across multiple fields.
indexes[row[0]] = {'primary_key': row[1], 'unique': row[2]}
return indexes