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<h1 class="title">QAbstractUriResolver Class</h1>
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<p>The <a href="qabstracturiresolver.html">QAbstractUriResolver</a> class is a callback interface for resolving Uniform Resource Identifiers. A Uniform Resource Identifier (URI) is a string that uniquely identifies a resource. URIs are versatile global identifiers. It is often useful to transform a URI that identifies something logical into a URI that locates something physical (a URL), or to simply map a URI to a different URI. <a href="qabstracturiresolver.html#resolve">QAbstractUriResolver::resolve</a>() provides this functionality. <a href="#details">More...</a></p>
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<tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign"> <span class="preprocessor">#include <QAbstractUriResolver></span>
</td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += xmlpatterns</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign"> Qt 4.4</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Inherits:</td><td class="memItemRight bottomAlign"> </td></tr></table></div><p><b>Note:</b> All functions in this class are reentrant.</p>
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<h2 id="public-functions">Public Functions</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qabstracturiresolver.html#QAbstractUriResolver">QAbstractUriResolver</a></b>(QObject *<i> parent</i> = 0)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="qabstracturiresolver.html#dtor.QAbstractUriResolver">~QAbstractUriResolver</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> virtual QUrl </td><td class="memItemRight bottomAlign"><b><a href="qabstracturiresolver.html#resolve">resolve</a></b>(const QUrl &<i> relative</i>, const QUrl &<i> baseURI</i>) const = 0</td></tr>
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<h2 id="details">Detailed Description</h2>
<p>The <a href="qabstracturiresolver.html">QAbstractUriResolver</a> class is a callback interface for resolving Uniform Resource Identifiers. A Uniform Resource Identifier (URI) is a string that uniquely identifies a resource. URIs are versatile global identifiers. It is often useful to transform a URI that identifies something logical into a URI that locates something physical (a URL), or to simply map a URI to a different URI. <a href="qabstracturiresolver.html#resolve">QAbstractUriResolver::resolve</a>() provides this functionality.</p>
<p>For example, one could write a <a href="qabstracturiresolver.html">QAbstractUriResolver</a> subclass that rewrites library ISBN number URIs as book title URLs, e.g., <i>urn:isbn:0-345-33973-8</i> would be rewritten as <i>file:///books/returnOfTheKing.doc</i>. Or a <a href="qabstracturiresolver.html">QAbstractUriResolver</a> subclass could be written for a web browser to let the web browser protect the user's private files by mapping incoming requests for them to null URIs.</p>
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<p><b>See also </b><a href="http://en.wikipedia.org/wiki/Uniform_Resource_Identifier">http://en.wikipedia.org/wiki/Uniform_Resource_Identifier</a>.</p>
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<h2>Member Function Documentation</h2>
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<h3 class="fn" id="QAbstractUriResolver"><a name="QAbstractUriResolver"></a>QAbstractUriResolver::<span class="name">QAbstractUriResolver</span>(<span class="type">QObject</span> *<i> parent</i> = 0)</h3>
<p>Constructs a <a href="qabstracturiresolver.html">QAbstractUriResolver</a> with the specified <i>parent</i>.</p>
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<h3 class="fn" id="dtor.QAbstractUriResolver"><a name="dtor.QAbstractUriResolver"></a><code>[virtual] </code>QAbstractUriResolver::<span class="name">~QAbstractUriResolver</span>()</h3>
<p>Destructor.</p>
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<h3 class="fn" id="resolve"><a name="resolve"></a><code>[pure virtual] </code><span class="type">QUrl</span> QAbstractUriResolver::<span class="name">resolve</span>(const <span class="type">QUrl</span> &<i> relative</i>, const <span class="type">QUrl</span> &<i> baseURI</i>) const</h3>
<p>Returns the <i>relative</i> URI resolved using the <i>baseURI</i>.</p>
<p>The caller guarantees that both <i>relative</i> and <i>baseURI</i> are valid, and that <i>baseURI</i> is absolute. <i>relative</i> can be relative, absolute, or empty.</p>
<p>The returned QUrl can be a default constructed QUrl. If it is not a default constructed QUrl, it will be absolute and valid. If a default constructed QUrl is returned, it means the <i>relative</i> URI was not accepted to be resolved.</p>
<p>If the reimplemented resolve() function decides it has nothing to do about resolving the <i>relative</i> URI, it should simply return the <i>relative</i> URI resolved against the <i>baseURI</i>, i.e.:</p>
<pre class="cpp"><span class="keyword">return</span> baseURI<span class="operator">.</span>resolved(relative);</pre>
<p><b>See also </b>QUrl::isRelative() and QUrl::isValid().</p>
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