Added support for SA 0.5 (previously only 0.6 was supported).

sqlbase7_sa/sqlbase7_sa06.py

@@ -0,0 +1,99 @@
+#!/usr/bin/env python
+# -*- coding: utf-8  -*-
+################################################################################
+#
+#  SQLBase7-SA -- SQLAlchemy driver/dialect for Centura SQLBase v7
+#  Copyright © 2010 Lance Edgar
+#
+#  This file is part of SQLBase7-SA.
+#
+#  SQLBase7-SA is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  SQLBase7-SA is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with SQLBase7-SA.  If not, see <http://www.gnu.org/licenses/>.
+#
+################################################################################
+
+
+from sqlbase7_sa.sqlbase7 import SQLBase7Compiler, SQLBase7Dialect
+
+from sqlalchemy.connectors.pyodbc import PyODBCConnector
+
+
+class SQLBase7Compiler_SA06(SQLBase7Compiler):
+
+    def visit_ilike_op(self, binary, **kw):
+        escape = binary.modifiers.get("escape", None)
+        return '@lower(%s) LIKE @lower(%s)' % (
+                                            self.process(binary.left, **kw), 
+                                            self.process(binary.right, **kw)) \
+            + (escape and ' ESCAPE \'%s\'' % escape or '')    
+
+
+class SQLBase7Dialect_SA06(SQLBase7Dialect):
+
+    statement_compiler = SQLBase7Compiler_SA06
+
+    def _get_default_schema_name(self, connection):
+        return 'SYSADM'
+
+    def _check_unicode_returns(self, connection):
+        return False
+
+    def get_table_names(self, connection, schema=None, **kw):
+        cursor = connection.connection.cursor()
+        table_names = [row.NAME for row in cursor.execute(
+                "SELECT NAME FROM %s.SYSTABLES WHERE REMARKS IS NOT NULL" % schema
+                )]
+        cursor.close()
+        return table_names
+
+    def get_columns(self, connection, table_name, schema=None, **kw):
+        if schema is None:
+            schema = self.get_default_schema_name(connection)
+        cursor = connection.connection.cursor()
+        columns = []
+
+        for row in cursor.execute("SELECT NAME,COLTYPE,NULLS FROM %s.SYSCOLUMNS WHERE TBNAME = '%s'" % (schema, table_name)):
+
+            columns.append({
+                    'name'              : row.NAME,
+                    'type'              : self._type_map[row.COLTYPE],
+                    'nullable'          : row.NULLS == 'Y',
+                    'default'           : None,
+                    'autoincrement'     : False,
+                    })
+
+        cursor.close()
+        return columns
+
+    def get_primary_keys(self, connection, table_name, schema=None, **kw):
+        if schema is None:
+            schema = self.get_default_schema_name(connection)
+        cursor = connection.connection.cursor()
+        primary_keys = [row.COLNAME for row in cursor.execute(
+                "SELECT COLNAME FROM %s.SYSPKCONSTRAINTS WHERE NAME = '%s' ORDER BY PKCOLSEQNUM" % (schema, table_name)
+                )]
+        cursor.close()
+        return primary_keys
+
+    def get_foreign_keys(self, connection, table_name, schema=None, **kw):
+        return []
+
+    def get_indexes(self, connection, table_name, schema=None, **kw):
+        return []
+
+
+class SQLBase7Dialect_SA06_pyodbc(SQLBase7Dialect_SA06, PyODBCConnector):
+    pass
+
+
+dialect = SQLBase7Dialect_SA06_pyodbc