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Code Issues 32 Releases Wiki Activity

[multi-db] Made minor formatting updates. Added basic support for drop table, still needs to handle cascade.

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git-svn-id: http://code.djangoproject.com/svn/django/branches/multiple-db-support@3264 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Jason Pellerin 2006-07-03 20:49:50 +00:00
parent 8f1d2bc98a
commit d2d269ea15
1 changed files with 30 additions and 5 deletions
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35
django/db/backends/ansi/sql.py
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@ -60,7 +60,6 @@ class SchemaBuilder(object):
info = opts.connection_info info = opts.connection_info
backend = info.backend backend = info.backend
quote_name = backend.quote_name quote_name = backend.quote_name
data_types = info.get_creation_module().DATA_TYPES data_types = info.get_creation_module().DATA_TYPES
table_output = [] table_output = []
pending_references = {} pending_references = {}
@ -177,8 +176,9 @@ class SchemaBuilder(object):
output = [] output = []
for f in opts.many_to_many: for f in opts.many_to_many:
if not isinstance(f.rel, models.GenericRel): if not isinstance(f.rel, models.GenericRel):
table_output = [style.SQL_KEYWORD('CREATE TABLE') + ' ' + \ table_output = [
style.SQL_TABLE(quote_name(f.m2m_db_table())) + ' ('] style.SQL_KEYWORD('CREATE TABLE') + ' ' + \
style.SQL_TABLE(quote_name(f.m2m_db_table())) + ' (']
table_output.append(' %s %s %s,' % \ table_output.append(' %s %s %s,' % \
(style.SQL_FIELD(quote_name('id')), (style.SQL_FIELD(quote_name('id')),
style.SQL_COLTYPE(data_types['AutoField']), style.SQL_COLTYPE(data_types['AutoField']),
@ -204,6 +204,32 @@ class SchemaBuilder(object):
connection)) connection))
return output return output
def get_drop_table(self, model, cascade=False, style=None):
"""Construct and return the SQL statment(s) needed to drop a model's
table. If cascade is true, then output additional statments to drop any
dependant man-many tables and drop any foreign keys that reference
this table.
"""
if style is None:
style = default_style
opts = model._meta
info = opts.connection_info
db_table = opts.db_table
backend = info.backend
output = []
output.append(BoundStatement(
'%s %s;' % (style.SQL_KEYWORD('DROP TABLE'),
style.SQL_TABLE(backend.quote_name(db_table))),
info.connection))
if cascade:
# FIXME deal with my foreign keys, others that might have a foreign
# key TO me, and many-many
pass
# Reverse it, to deal with table dependencies.
output.reverse()
return output
def get_initialdata(self, model, style=None): def get_initialdata(self, model, style=None):
if style is None: if style is None:
style = default_style style = default_style
@ -239,8 +265,7 @@ class SchemaBuilder(object):
"""Get the path from which to load sql initial data files for a model. """Get the path from which to load sql initial data files for a model.
""" """
return os.path.normpath(os.path.join(os.path.dirname(models.get_app(model._meta.app_label).__file__), 'sql')) return os.path.normpath(os.path.join(os.path.dirname(models.get_app(model._meta.app_label).__file__), 'sql'))
def get_rel_data_type(self, f): def get_rel_data_type(self, f):
return (f.get_internal_type() in ('AutoField', 'PositiveIntegerField', return (f.get_internal_type() in ('AutoField', 'PositiveIntegerField',
'PositiveSmallIntegerField')) \ 'PositiveSmallIntegerField')) \