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POZF Autoloader to load ancestor and requested class
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copied!<p>I am integrating Zend Framework into an existing application. I want to switch the application over to Zend's autoloading mechanism to replace dozens of <code>include()</code> statements.</p> <p>I have a specific requirement for the autoloading mechanism, though. Allow me to elaborate.</p> <p>The existing application uses a core library (independent from ZF), for example:</p> <pre><code>/Core/Library/authentication.php /Core/Library/translation.php /Core/Library/messages.php </code></pre> <p>this core library is to remain untouched at all times and serves a number of applications. The library contains classes like</p> <pre><code>class ancestor_authentication { ... } class ancestor_translation { ... } class ancestor_messages { ... } </code></pre> <p>in the <em>application</em>, there is also a Library directory:</p> <pre><code>/App/Library/authentication.php /App/Library/translation.php /App/Library/messages.php </code></pre> <p>these includes extend the ancestor classes and are the ones that actually get instantiated in the application.</p> <pre><code>class authentication extends ancestor_authentication { } class translation extends ancestor_translation { } class messages extends ancestor_messages { } </code></pre> <p>usually, these class definitions are empty. They simply extend their ancestors and provide the class name to instantiate.</p> <pre><code>$authentication = new authentication(); </code></pre> <p>The purpose of this solution is to be able to easily customize aspects of the application without having to patch the core libraries.</p> <p>Now, the autoloader I need would have to be aware of this structure. When an object of the class <code>authentication</code> is requested, the autoloader would have to:</p> <pre><code>1. load /Core/Library/authentication.php 2. load /App/Library/authentication.php </code></pre> <p>My current approach would be creating a custom function, and binding that to <code>Zend_Loader_Autoloader</code> for a specific namespace prefix.</p> <ul> <li><p>Is there already a way to do this in Zend that I am overlooking? The accepted answer in <a href="https://stackoverflow.com/questions/304323/integrating-external-scripts-with-zend-framework">this question</a> kind of implies there is, but that may be just a bad choice of wording.</p></li> <li><p>Are there extensions to the Zend Autoloader that do this? </p></li> <li><p>Can you - I am new to ZF - think of an elegant way, conforming with the spirit of the framework, of extending the Autoloader with this functionality? I'm not necessary looking for a ready-made implementation, some pointers (This should be an extension to the <code>xyz</code> method that you would call like this...) would already be enough.</p></li> </ul>

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