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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>API Details — Alembic 0.8.3 documentation</title> <link rel="stylesheet" href="../_static/nature_override.css" type="text/css" /> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <link rel="stylesheet" href="../_static/changelog.css" type="text/css" /> <link rel="stylesheet" href="../_static/sphinx_paramlinks.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../', VERSION: '0.8.3', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="../_static/jquery.js"></script> <script type="text/javascript" src="../_static/underscore.js"></script> <script type="text/javascript" src="../_static/doctools.js"></script> <link rel="top" title="Alembic 0.8.3 documentation" href="../index.html" /> <link rel="next" title="Overview" href="overview.html" /> <link rel="prev" title="Cookbook" href="../cookbook.html" /> </head> <body role="document"> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="overview.html" title="Overview" accesskey="N">next</a> |</li> <li class="right" > <a href="../cookbook.html" title="Cookbook" accesskey="P">previous</a> |</li> <li class="nav-item nav-item-0"><a href="../index.html">Alembic 0.8.3 documentation</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" role="main"> <div class="section" id="api-details"> <span id="api"></span><h1>API Details<a class="headerlink" href="#api-details" title="Permalink to this headline">¶</a></h1> <p>Alembic’s internal API has many public integration points that can be used to extend Alembic’s functionality as well as to re-use its functionality in new ways. As the project has grown, more APIs are created and exposed for this purpose.</p> <p>Direct use of the vast majority of API details discussed here is not needed for rudimentary use of Alembic; the only API that is used normally by end users is the methods provided by the <a class="reference internal" href="../ops.html#alembic.operations.Operations" title="alembic.operations.Operations"><code class="xref py py-class docutils literal"><span class="pre">Operations</span></code></a> class, which is discussed outside of this subsection, and the parameters that can be passed to the <a class="reference internal" href="runtime.html#alembic.runtime.environment.EnvironmentContext.configure" title="alembic.runtime.environment.EnvironmentContext.configure"><code class="xref py py-meth docutils literal"><span class="pre">EnvironmentContext.configure()</span></code></a> method, used when configuring one’s <code class="docutils literal"><span class="pre">env.py</span></code> environment. However, real-world applications will usually end up using more of the internal API, in particular being able to run commands programmatically, as discussed in the section <a class="reference internal" href="commands.html"><em>Commands</em></a>.</p> <div class="toctree-wrapper compound"> <ul> <li class="toctree-l1"><a class="reference internal" href="overview.html">Overview</a></li> <li class="toctree-l1"><a class="reference internal" href="runtime.html">Runtime Objects</a><ul> <li class="toctree-l2"><a class="reference internal" href="runtime.html#the-environment-context">The Environment Context</a></li> <li class="toctree-l2"><a class="reference internal" href="runtime.html#the-migration-context">The Migration Context</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="config.html">Configuration</a></li> <li class="toctree-l1"><a class="reference internal" href="commands.html">Commands</a></li> <li class="toctree-l1"><a class="reference internal" href="operations.html">Operation Directives</a><ul> <li class="toctree-l2"><a class="reference internal" href="operations.html#operation-plugins">Operation Plugins</a></li> <li class="toctree-l2"><a class="reference internal" href="operations.html#built-in-operation-objects">Built-in Operation Objects</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="autogenerate.html">Autogeneration</a><ul> <li class="toctree-l2"><a class="reference internal" href="autogenerate.html#getting-diffs">Getting Diffs</a></li> <li class="toctree-l2"><a class="reference internal" href="autogenerate.html#customizing-revision-generation">Customizing Revision Generation</a></li> <li class="toctree-l2"><a class="reference internal" href="autogenerate.html#autogenerating-custom-operation-directives">Autogenerating Custom Operation Directives</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="script.html">Script Directory</a><ul> <li class="toctree-l2"><a class="reference internal" href="script.html#revision">Revision</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="ddl.html">DDL Internals</a><ul> <li class="toctree-l2"><a class="reference internal" href="ddl.html#module-alembic.ddl.mysql">MySQL</a></li> <li class="toctree-l2"><a class="reference internal" href="ddl.html#module-alembic.ddl.mssql">MS-SQL</a></li> <li class="toctree-l2"><a class="reference internal" href="ddl.html#module-alembic.ddl.postgresql">Postgresql</a></li> <li class="toctree-l2"><a class="reference internal" href="ddl.html#module-alembic.ddl.sqlite">SQLite</a></li> </ul> </li> </ul> </div> </div> </div> </div> </div> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <h4>Previous topic</h4> <p class="topless"><a href="../cookbook.html" title="previous chapter">Cookbook</a></p> <h4>Next topic</h4> <p class="topless"><a href="overview.html" title="next chapter">Overview</a></p> <div role="note" aria-label="source link"> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../_sources/api/index.txt" rel="nofollow">Show Source</a></li> </ul> </div> <div id="searchbox" style="display: none" role="search"> <h3>Quick search</h3> <form class="search" action="../search.html" method="get"> <input type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> <p class="searchtip" style="font-size: 90%"> Enter search terms or a module, class or function name. </p> </div> <script type="text/javascript">$('#searchbox').show(0);</script> </div> </div> <div class="clearer"></div> </div> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="overview.html" title="Overview" >next</a> |</li> <li class="right" > <a href="../cookbook.html" title="Cookbook" >previous</a> |</li> <li class="nav-item nav-item-0"><a href="../index.html">Alembic 0.8.3 documentation</a> »</li> </ul> </div> <div class="footer" role="contentinfo"> © Copyright 2010-2015, Mike Bayer. 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