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        <li class="md-nav__item">
  <a href="#abstractpackageinstallationplugin" class="md-nav__link">
    AbstractPackageInstallationPlugin
  </a>
  
    <nav class="md-nav" aria-label="AbstractPackageInstallationPlugin">
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    $installation
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    $application
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    AbstractXMLPackageInstallationPlugin
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    $tagName
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</li>
        
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  <a href="#prepareimportarray-data" class="md-nav__link">
    prepareImport(array $data)
  </a>
  
</li>
        
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  <a href="#validateimportarray-data" class="md-nav__link">
    validateImport(array $data)
  </a>
  
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  <a href="#findexistingitemarray-data" class="md-nav__link">
    findExistingItem(array $data)
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    2.5.3. Example
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    handleDelete(array $items)
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  <a href="#postimport" class="md-nav__link">
    postImport()
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    AbstractOptionPackageInstallationPlugin
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                <h1 id="package-installation-plugins">Package Installation Plugins<a class="headerlink" href="#package-installation-plugins" title="Permanent link">#</a></h1>
<p>A package installation plugin (PIP) defines the behavior to handle a specific <a href="../../../package/package-xml/#instruction">instruction</a> during package installation, update or uninstallation.</p>
<h2 id="abstractpackageinstallationplugin"><code>AbstractPackageInstallationPlugin</code><a class="headerlink" href="#abstractpackageinstallationplugin" title="Permanent link">#</a></h2>
<p>Any package installation plugin has to implement the <a href="https://github.com/WoltLab/WCF/blob/master/wcfsetup/install/files/lib/system/package/plugin/IPackageInstallationPlugin.class.php">IPackageInstallationPlugin</a> interface.
It is recommended however, to extend the abstract implementation <a href="https://github.com/WoltLab/WCF/blob/master/wcfsetup/install/files/lib/system/package/plugin/AbstractPackageInstallationPlugin.class.php">AbstractPackageInstallationPlugin</a> of this interface instead of directly implementing the interface.
The abstract implementation will always provide sane methods in case of any API changes.</p>
<h3 id="class-members">Class Members<a class="headerlink" href="#class-members" title="Permanent link">#</a></h3>
<p>Package Installation Plugins have a few notable class members easing your work:</p>
<h4 id="installation"><code>$installation</code><a class="headerlink" href="#installation" title="Permanent link">#</a></h4>
<p>This member contains an instance of <a href="https://github.com/WoltLab/WCF/blob/master/wcfsetup/install/files/lib/system/package/PackageInstallationDispatcher.class.php">PackageInstallationDispatcher</a> which provides you with all meta data related to the current package being processed.
The most common usage is the retrieval of the package ID via <code>$this-&gt;installation-&gt;getPackageID()</code>.</p>
<h4 id="application"><code>$application</code><a class="headerlink" href="#application" title="Permanent link">#</a></h4>
<p>Represents the abbreviation of the target application, e.g. <code>wbb</code> (default value: <code>wcf</code>), used for the name of database table in which the installed data is stored.</p>
<h2 id="abstractxmlpackageinstallationplugin"><code>AbstractXMLPackageInstallationPlugin</code><a class="headerlink" href="#abstractxmlpackageinstallationplugin" title="Permanent link">#</a></h2>
<p><a href="https://github.com/WoltLab/WCF/blob/master/wcfsetup/install/files/lib/system/package/plugin/AbstractPackageInstallationPlugin.class.php">AbstractPackageInstallationPlugin</a> is the default implementation for all package installation plugins based upon a single XML document.
It handles the evaluation of the document and provide you an object-orientated approach to handle its data.</p>
<h3 id="class-members_1">Class Members<a class="headerlink" href="#class-members_1" title="Permanent link">#</a></h3>
<h4 id="classname"><code>$className</code><a class="headerlink" href="#classname" title="Permanent link">#</a></h4>
<p>Value must be the qualified name of a class deriving from <a href="https://github.com/WoltLab/WCF/blob/master/wcfsetup/install/files/lib/data/DatabaseObjectEditor.class.php">DatabaseObjectEditor</a> which is used to create and update objects.</p>
<h4 id="tagname"><code>$tagName</code><a class="headerlink" href="#tagname" title="Permanent link">#</a></h4>
<p>Specifies the tag name within a <code>&lt;import&gt;</code> or <code>&lt;delete&gt;</code> section of the XML document used for each installed object.</p>
<h4 id="prepareimportarray-data"><code>prepareImport(array $data)</code><a class="headerlink" href="#prepareimportarray-data" title="Permanent link">#</a></h4>
<p>The passed array <code>$data</code> contains the parsed value from each evaluated tag in the <code>&lt;import&gt;</code> section:</p>
<ul>
<li><code>$data['elements']</code> contains a list of tag names and their value.</li>
<li><code>$data['attributes']</code> contains a list of attributes present on the tag identified by <a href="#tagname">$tagName</a>.</li>
</ul>
<p>This method should return an one-dimensional array, where each key maps to the corresponding database column name (key names are case-sensitive).
It will be passed to either <code>DatabaseObjectEditor::create()</code> or <code>DatabaseObjectEditor::update()</code>.</p>
<p>Example:</p>
<div class="highlight"><pre><span></span><code><span class="o">&lt;?</span><span class="nx">php</span>
<span class="k">return</span> <span class="p">[</span>
    <span class="s1">&#39;environment&#39;</span> <span class="o">=&gt;</span> <span class="nv">$data</span><span class="p">[</span><span class="s1">&#39;elements&#39;</span><span class="p">][</span><span class="s1">&#39;environment&#39;</span><span class="o">.</span><span class="nx">md</span><span class="p">],</span>
    <span class="s1">&#39;eventName&#39;</span> <span class="o">=&gt;</span> <span class="nv">$data</span><span class="p">[</span><span class="s1">&#39;elements&#39;</span><span class="p">][</span><span class="s1">&#39;eventname&#39;</span><span class="o">.</span><span class="nx">md</span><span class="p">],</span>
    <span class="s1">&#39;name&#39;</span> <span class="o">=&gt;</span> <span class="nv">$data</span><span class="p">[</span><span class="s1">&#39;attributes&#39;</span><span class="p">][</span><span class="s1">&#39;name&#39;</span><span class="o">.</span><span class="nx">md</span><span class="p">]</span>
<span class="p">];</span>
</code></pre></div>
<h4 id="validateimportarray-data"><code>validateImport(array $data)</code><a class="headerlink" href="#validateimportarray-data" title="Permanent link">#</a></h4>
<p>The passed array <code>$data</code> equals the data returned by <a href="#prepareimportarray-data">prepareImport()</a>.
This method has no return value, instead you should throw an exception if the passed data is invalid.</p>
<h4 id="findexistingitemarray-data"><code>findExistingItem(array $data)</code><a class="headerlink" href="#findexistingitemarray-data" title="Permanent link">#</a></h4>
<p>The passed array <code>$data</code> equals the data returned by <a href="#prepareimportarray-data">prepareImport()</a>.
This method is expected to return an array with two keys:</p>
<ul>
<li><code>sql</code> contains the SQL query with placeholders.</li>
<li><code>parameters</code> contains an array with values used for the SQL query.</li>
</ul>
<h4 id="253-example">2.5.3. Example<a class="headerlink" href="#253-example" title="Permanent link">#</a></h4>
<div class="highlight"><pre><span></span><code><span class="o">&lt;?</span><span class="nx">php</span>
<span class="nv">$sql</span> <span class="o">=</span> <span class="s2">&quot;SELECT  *</span>
<span class="s2">    FROM    wcf&quot;</span><span class="o">.</span><span class="nx">WCF_N</span><span class="o">.</span><span class="s2">&quot;_&quot;</span><span class="o">.</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">tableName</span><span class="o">.</span><span class="s2">&quot;</span>
<span class="s2">    WHERE   packageID = ?</span>
<span class="s2">        AND name = ?</span>
<span class="s2">        AND templateName = ?</span>
<span class="s2">        AND eventName = ?</span>
<span class="s2">        AND environment = ?&quot;</span><span class="p">;</span>
<span class="nv">$parameters</span> <span class="o">=</span> <span class="p">[</span>
    <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">installation</span><span class="o">-&gt;</span><span class="na">getPackageID</span><span class="p">(),</span>
    <span class="nv">$data</span><span class="p">[</span><span class="s1">&#39;name&#39;</span><span class="p">],</span>
    <span class="nv">$data</span><span class="p">[</span><span class="s1">&#39;templateName&#39;</span><span class="p">],</span>
    <span class="nv">$data</span><span class="p">[</span><span class="s1">&#39;eventName&#39;</span><span class="p">],</span>
    <span class="nv">$data</span><span class="p">[</span><span class="s1">&#39;environment&#39;</span><span class="p">]</span>
<span class="p">];</span>

<span class="k">return</span> <span class="p">[</span>
    <span class="s1">&#39;sql&#39;</span> <span class="o">=&gt;</span> <span class="nv">$sql</span><span class="p">,</span>
    <span class="s1">&#39;parameters&#39;</span> <span class="o">=&gt;</span> <span class="nv">$parameters</span>
<span class="p">];</span>
</code></pre></div>
<h4 id="handledeletearray-items"><code>handleDelete(array $items)</code><a class="headerlink" href="#handledeletearray-items" title="Permanent link">#</a></h4>
<p>The passed array <code>$items</code> contains the original node data, similar to <a href="#prepareimportarray-data">prepareImport()</a>.
You should make use of this data to remove the matching element from database.</p>
<p>Example:
<div class="highlight"><pre><span></span><code><span class="o">&lt;?</span><span class="nx">php</span>
<span class="nv">$sql</span> <span class="o">=</span> <span class="s2">&quot;DELETE FROM wcf&quot;</span><span class="o">.</span><span class="nx">WCF_N</span><span class="o">.</span><span class="s2">&quot;_&quot;</span><span class="o">.</span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">tableName</span><span class="o">.</span><span class="s2">&quot;</span>
<span class="s2">    WHERE       packageID = ?</span>
<span class="s2">            AND environment = ?</span>
<span class="s2">            AND eventName = ?</span>
<span class="s2">            AND name = ?</span>
<span class="s2">            AND templateName = ?&quot;</span><span class="p">;</span>
<span class="nv">$statement</span> <span class="o">=</span> <span class="nx">WCF</span><span class="o">::</span><span class="na">getDB</span><span class="p">()</span><span class="o">-&gt;</span><span class="na">prepareStatement</span><span class="p">(</span><span class="nv">$sql</span><span class="p">);</span>
<span class="k">foreach</span> <span class="p">(</span><span class="nv">$items</span> <span class="k">as</span> <span class="nv">$item</span><span class="p">)</span> <span class="p">{</span>
    <span class="nv">$statement</span><span class="o">-&gt;</span><span class="na">execute</span><span class="p">([</span>
        <span class="nv">$this</span><span class="o">-&gt;</span><span class="na">installation</span><span class="o">-&gt;</span><span class="na">getPackageID</span><span class="p">(),</span>
        <span class="nv">$item</span><span class="p">[</span><span class="s1">&#39;elements&#39;</span><span class="p">][</span><span class="s1">&#39;environment&#39;</span><span class="o">.</span><span class="nx">md</span><span class="p">],</span>
        <span class="nv">$item</span><span class="p">[</span><span class="s1">&#39;elements&#39;</span><span class="p">][</span><span class="s1">&#39;eventname&#39;</span><span class="o">.</span><span class="nx">md</span><span class="p">],</span>
        <span class="nv">$item</span><span class="p">[</span><span class="s1">&#39;attributes&#39;</span><span class="p">][</span><span class="s1">&#39;name&#39;</span><span class="o">.</span><span class="nx">md</span><span class="p">],</span>
        <span class="nv">$item</span><span class="p">[</span><span class="s1">&#39;elements&#39;</span><span class="p">][</span><span class="s1">&#39;templatename&#39;</span><span class="o">.</span><span class="nx">md</span><span class="p">]</span>
    <span class="p">]);</span>
<span class="p">}</span>
</code></pre></div></p>
<h4 id="postimport"><code>postImport()</code><a class="headerlink" href="#postimport" title="Permanent link">#</a></h4>
<p>Allows you to (optionally) run additionally actions after all elements were processed.</p>
<h2 id="abstractoptionpackageinstallationplugin"><code>AbstractOptionPackageInstallationPlugin</code><a class="headerlink" href="#abstractoptionpackageinstallationplugin" title="Permanent link">#</a></h2>
<p><a href="https://github.com/WoltLab/WCF/blob/master/wcfsetup/install/files/lib/system/package/plugin/AbstractOptionPackageInstallationPlugin.class.php">AbstractOptionPackageInstallationPlugin</a> is an abstract implementation for options, used for:</p>
<ul>
<li>ACL Options</li>
<li>Options</li>
<li>User Options</li>
<li>User Group Options</li>
</ul>
<h3 id="differences-to-abstractxmlpackageinstallationplugin">Differences to <code>AbstractXMLPackageInstallationPlugin</code><a class="headerlink" href="#differences-to-abstractxmlpackageinstallationplugin" title="Permanent link">#</a></h3>
<h4 id="reservedtags"><code>$reservedTags</code><a class="headerlink" href="#reservedtags" title="Permanent link">#</a></h4>
<p><code>$reservedTags</code> is a list of reserved tag names so that any tag encountered but not listed here will be added to the database column <code>additionalData</code>.
This allows options to store arbitrary data which can be accessed but were not initially part of the PIP specifications.</p>
                
                  
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