pgadmin4/web/pgadmin/tools/erd/utils.py

73 lines
2.4 KiB
Python

##########################################################################
#
# pgAdmin 4 - PostgreSQL Tools
#
# Copyright (C) 2013 - 2021, The pgAdmin Development Team
# This software is released under the PostgreSQL Licence
#
##########################################################################
from pgadmin.browser.server_groups.servers.databases.schemas.tables.utils \
import BaseTableView
from pgadmin.browser.server_groups.servers.databases.schemas.utils \
import get_schemas
from pgadmin.browser.server_groups.servers.databases.schemas.utils \
import DataTypeReader
class ERDTableView(BaseTableView, DataTypeReader):
def __init__(self):
super(BaseTableView, self).__init__(cmd='erd')
@BaseTableView.check_precondition
def sql(self, conn_id=None, did=None, sid=None, data={}):
return BaseTableView.get_sql(self, did, None, None, data, None,
add_not_exists_clause=True)
@BaseTableView.check_precondition
def get_types(self, conn_id=None, did=None, sid=None):
condition = self.get_types_condition_sql(False)
return DataTypeReader.get_types(self, self.conn, condition, True)
@BaseTableView.check_precondition
def fetch_all_tables(self, conn_id=None, did=None, sid=None):
status, schemas = get_schemas(self.conn, show_system_objects=False)
if not status:
return status, schemas
all_tables = []
for row in schemas['rows']:
status, res = \
BaseTableView.fetch_tables(self, sid, did, row['oid'])
if not status:
return status, res
all_tables.extend(res.values())
return True, all_tables
class ERDHelper:
def __init__(self, conn_id, sid, did):
self.conn_id = conn_id
self.did = did
self.sid = sid
self.table_view = ERDTableView()
self.link_view = None
def get_types(self):
return self.table_view.get_types(
conn_id=self.conn_id, did=self.did, sid=self.sid)
def get_table_sql(self, data):
SQL, name = self.table_view.sql(
conn_id=self.conn_id, did=self.did, sid=self.sid,
data=data)
return SQL
def get_all_tables(self):
status, res = self.table_view.fetch_all_tables(
conn_id=self.conn_id, did=self.did, sid=self.sid)
return status, res