Initial commit.

sqlalchemy_pervasive/__init__.py

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+#!/usr/bin/env python
+# -*- coding: utf-8  -*-
+################################################################################
+#
+#  sqlalchemy-pervasive -- SQLAlchemy Dialect for Pervasive PSQL
+#  Copyright © 2013 Lance Edgar
+#
+#  This file is part of sqlalchemy-pervasive.
+#
+#  sqlalchemy-pervasive 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.
+#
+#  sqlalchemy-pervasive 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
+#  sqlalchemy-pervasive.  If not, see <http://www.gnu.org/licenses/>.
+#
+################################################################################
+
+
+from ._version import __version__
+
+from sqlalchemy.dialects import registry
+
+
+registry.register('pervasive', 'sqlalchemy_pervasive.pyodbc', 'PervasiveDialect_pyodbc')

sqlalchemy_pervasive/_version.py

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+__version__ = '0.1.0'

sqlalchemy_pervasive/base.py

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+#!/usr/bin/env python
+# -*- coding: utf-8  -*-
+################################################################################
+#
+#  sqlalchemy-pervasive -- SQLAlchemy Dialect for Pervasive PSQL
+#  Copyright © 2013 Lance Edgar
+#
+#  This file is part of sqlalchemy-pervasive.
+#
+#  sqlalchemy-pervasive 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.
+#
+#  sqlalchemy-pervasive 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
+#  sqlalchemy-pervasive.  If not, see <http://www.gnu.org/licenses/>.
+#
+################################################################################
+
+"""
+Support for the Pervasive PSQL database engine.
+"""
+
+from sqlalchemy.sql.compiler import SQLCompiler
+from sqlalchemy.engine.default import DefaultDialect
+from sqlalchemy.exc import InvalidRequestError
+
+
+class PervasiveCompiler(SQLCompiler):
+    """
+    Custom SQL statement compiler for Pervasive PSQL.
+    """
+
+    # This logic was basically copied from the ``sqlalchemy-access`` dialect.
+
+    def get_select_precolumns(self, select):
+        s = 'DISTINCT ' if select._distinct else ''
+        if select._limit:
+            s += 'TOP {0} '.format(select._limit)
+        if select._offset:
+            raise InvalidRequestError(
+                "Pervasive PSQL does not support TOP (limit) with an offset")
+        return s
+
+    def limit_clause(self, select):
+        return ""
+
+
+class PervasiveDialect(DefaultDialect):
+
+    name = 'pervasive'
+
+    statement_compiler = PervasiveCompiler

sqlalchemy_pervasive/pyodbc.py

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+#!/usr/bin/env python
+# -*- coding: utf-8  -*-
+################################################################################
+#
+#  sqlalchemy-pervasive -- SQLAlchemy Dialect for Pervasive PSQL
+#  Copyright © 2013 Lance Edgar
+#
+#  This file is part of sqlalchemy-pervasive.
+#
+#  sqlalchemy-pervasive 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.
+#
+#  sqlalchemy-pervasive 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
+#  sqlalchemy-pervasive.  If not, see <http://www.gnu.org/licenses/>.
+#
+################################################################################
+
+"""
+Support for Pervasive PSQL via ``pyodbc``.
+"""
+
+from sqlalchemy.connectors.pyodbc import PyODBCConnector
+
+from .base import PervasiveDialect
+
+
+class PervasiveDialect_pyodbc(PyODBCConnector, PervasiveDialect):
+
+    pass