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4 changed files with 89 additions and 157 deletions
43
README.md
43
README.md
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@ -1,43 +0,0 @@
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# SQLBase7-SA
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SQLBase7-SA is a SQLAlchemy driver/dialect for the Centura SQLBase
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database, specifically version 7.5.1.
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## About the Project
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From what I can tell, SQLBase is still an actively-developed database,
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but it is no longer owned by Centura (see
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[here](http://en.wikipedia.org/wiki/Gupta_Technologies)). Also, the
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current version (according to [this
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page](http://www.unify.com/Products/Data_Management/SQLBase/), as of
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25 Apr 2010) is 11.5, so I have no idea how useful this project will
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be for versions of SQLBase more recent than 7.5.1.
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This project exists only for the sake of providing read-only access to
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legacy data, specifically that used by the
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[CAM32](http://www.camcommerce.com/products/CAM32.aspx) Point of Sale
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software. It's possible that it could allow writing data, etc., but I
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personally won't be adding any such features unless/until the need
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arises.
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I don't expect there to be much of anyone using SQLBase 7.5.1 at this
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point (besides perhaps other CAM32 users), but if you do happen to
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need additional functionality from this project or just have questions
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or comments, feel free to drop me a line at lance@edbob.org.
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## Downloads
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The code is released under the [GNU General Public
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License](http://www.gnu.org/licenses/gpl.html), version 3.
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It is available at [PyPI](http://pypi.python.org/pypi/SQLBase7-SA), so
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the easiest way to get the package is with the command:
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# pip install SQLBase7-SA
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Again, this project is extremely specific to my needs, so I'm only
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building eggs for Python 2.5 and 2.6 at this point. If you happen to
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need something else then please contact me.
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Copyright © 2010 Lance Edgar <lance@edbob.org>
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172
setup.py
172
setup.py
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@ -1,86 +1,86 @@
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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################################################################################
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#
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# SQLBase7-SA -- SQLAlchemy driver/dialect for Centura SQLBase v7
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# Copyright © 2010 Lance Edgar
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#
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# This file is part of SQLBase7-SA.
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#
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# SQLBase7-SA is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# SQLBase7-SA is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with SQLBase7-SA. If not, see <http://www.gnu.org/licenses/>.
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#
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################################################################################
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from setuptools import setup, find_packages
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import os
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execfile(os.path.join(os.path.dirname(__file__), 'sqlbase7_sa', '_version.py'))
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setup(
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name = 'SQLBase7-SA',
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version = __version__,
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author = 'Lance Edgar',
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author_email = 'lance@edbob.org',
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url = "https://forgejo.wuttaproject.org/rattail/sqlbase7-sa",
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license = "GNU GPL v3",
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description = 'SQLAlchemy dialect for Centura SQLBase v7',
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long_description = """
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SQLBase7-SA - SQLAlchemy dialect for Centura SQLBase v7
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-------------------------------------------------------
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This package provides a (possibly rudimentary) implementation
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of a SQLAlchemy dialect for the Centura SQLBase database
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engine. It is only intended (and known) to work with a very
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specific version of this database, that version being 7.5.1.
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""",
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classifiers = [
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'Development Status :: 4 - Beta',
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'Environment :: Plugins',
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'Environment :: Win32 (MS Windows)',
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'Intended Audience :: Developers',
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'License :: OSI Approved :: GNU General Public License (GPL)',
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'Natural Language :: English',
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'Operating System :: Microsoft :: Windows',
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'Programming Language :: Python',
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'Programming Language :: Python :: 2.5',
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'Programming Language :: Python :: 2.6',
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'Topic :: Database',
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'Topic :: Software Development :: Libraries :: Python Modules',
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],
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packages = find_packages(),
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install_requires = [
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'SQLAlchemy>0.5.2',
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],
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entry_points = {
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# SQLAlchemy 0.5
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'sqlalchemy.databases' : [
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'sqlbase7 = sqlbase7_sa.sqlbase7_sa05:SQLBase7Dialect_SA05',
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],
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# SQLAlchemy 0.6
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'sqlalchemy.dialects' : [
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'sqlbase7 = sqlbase7_sa.sqlbase7_sa06:SQLBase7Dialect_SA06_pyodbc',
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],
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},
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test_suite = 'sqlbase7_sa.tests',
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)
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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################################################################################
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#
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# SQLBase7-SA -- SQLAlchemy driver/dialect for Centura SQLBase v7
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# Copyright © 2010 Lance Edgar
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#
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# This file is part of SQLBase7-SA.
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#
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# SQLBase7-SA is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# SQLBase7-SA is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with SQLBase7-SA. If not, see <http://www.gnu.org/licenses/>.
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#
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################################################################################
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from setuptools import setup, find_packages
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import os
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execfile(os.path.join(os.path.dirname(__file__), 'sqlbase7_sa', '_version.py'))
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setup(
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name = 'SQLBase7-SA',
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version = __version__,
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author = 'Lance Edgar',
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author_email = 'lance@edbob.org',
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url = "http://sqlbase7-sa.edbob.org/",
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license = "GNU GPL v3",
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description = 'SQLAlchemy dialect for Centura SQLBase v7',
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long_description = """
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SQLBase7-SA - SQLAlchemy dialect for Centura SQLBase v7
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-------------------------------------------------------
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This package provides a (possibly rudimentary) implementation
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of a SQLAlchemy dialect for the Centura SQLBase database
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engine. It is only intended (and known) to work with a very
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specific version of this database, that version being 7.5.1.
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""",
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classifiers = [
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'Development Status :: 4 - Beta',
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'Environment :: Plugins',
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'Environment :: Win32 (MS Windows)',
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'Intended Audience :: Developers',
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'License :: OSI Approved :: GNU General Public License (GPL)',
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'Natural Language :: English',
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'Operating System :: Microsoft :: Windows',
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'Programming Language :: Python',
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'Programming Language :: Python :: 2.5',
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'Programming Language :: Python :: 2.6',
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'Topic :: Database',
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'Topic :: Software Development :: Libraries :: Python Modules',
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],
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packages = find_packages(),
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install_requires = [
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'SQLAlchemy',
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],
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entry_points = {
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# SQLAlchemy 0.5
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'sqlalchemy.databases' : [
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'sqlbase7 = sqlbase7_sa.sqlbase7_sa05:SQLBase7Dialect_SA05',
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],
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# SQLAlchemy 0.6
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'sqlalchemy.dialects' : [
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'sqlbase7 = sqlbase7_sa.sqlbase7_sa06:SQLBase7Dialect_SA06_pyodbc',
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],
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},
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test_suite = 'sqlbase7_sa.tests',
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)
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@ -23,4 +23,4 @@
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################################################################################
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__version__ = '0.1b5'
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__version__ = '0.1b1'
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@ -26,7 +26,6 @@
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from sqlalchemy.engine.default import DefaultDialect
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from sqlalchemy import types, and_
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from sqlalchemy.sql.expression import Join
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from sqlalchemy.sql import visitors, operators, ClauseElement
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import sqlalchemy
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@ -57,12 +56,7 @@ class SQLBase7Compiler(CompilerBase):
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return self.process(join.left, **kwargs) + ", " + self.process(join.right, **kwargs)
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def visit_select(self, select, **kwargs):
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if self.stack and 'from' in self.stack[-1]:
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existingfroms = self.stack[-1]['from']
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else:
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existingfroms = None
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froms = select._get_display_froms(existingfroms)
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froms = select._get_display_froms()
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whereclause = self._get_join_whereclause(froms)
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if whereclause is not None:
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select = select.where(whereclause)
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@ -77,16 +71,7 @@ class SQLBase7Compiler(CompilerBase):
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clauses = []
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def visit_join(join):
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if join.isouter:
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def visit_binary(binary):
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if binary.operator == operators.eq:
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if binary.left.table is join.right:
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binary.left = _OuterJoinColumn(binary.left)
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elif binary.right.table is join.right:
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binary.right = _OuterJoinColumn(binary.right)
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clauses.append(visitors.cloned_traverse(join.onclause, {}, {'binary':visit_binary}))
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else:
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clauses.append(join.onclause)
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clauses.append(join.onclause)
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for j in join.left, join.right:
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if isinstance(j, Join):
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visit_join(j)
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@ -99,16 +84,6 @@ class SQLBase7Compiler(CompilerBase):
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return and_(*clauses)
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return None
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def visit_outer_join_column(self, vc):
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return self.process(vc.column) + "(+)"
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class _OuterJoinColumn(ClauseElement):
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__visit_name__ = 'outer_join_column'
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def __init__(self, column):
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self.column = column
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class SQLBase7Dialect(DefaultDialect):
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