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<h2><a name="content"></a>Syndication Library</h2>
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<li class="navelem"><a class="el" href="namespaceSyndication.html">Syndication</a></li><li class="navelem"><a class="el" href="classSyndication_1_1Loader.html">Loader</a></li> </ul>
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<div class="header">
<div class="summary">
<a href="#signals">Signals</a> |
<a href="#pub-methods">Public Member Functions</a> |
<a href="#pub-static-methods">Static Public Member Functions</a> |
<a href="classSyndication_1_1Loader-members.html">List of all members</a> </div>
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<div class="title">Syndication::Loader Class Reference</div> </div>
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<p><code>#include <<a class="el" href="loader_8h_source.html">loader.h</a>></code></p>
<p>Inherits QObject.</p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="signals"></a>
Signals</h2></td></tr>
<tr class="memitem:abc810aa819a7c8edc5aff356a2920e6a"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classSyndication_1_1Loader.html#abc810aa819a7c8edc5aff356a2920e6a">loadingComplete</a> (<a class="el" href="classSyndication_1_1Loader.html">Syndication::Loader</a> *loader, Syndication::FeedPtr feed, <a class="el" href="namespaceSyndication.html#aaf92d762df59845c8a311e4d08e2d4e4">Syndication::ErrorCode</a> error)</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:ac70585eee719d1d6879539bc3e63f541"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classSyndication_1_1Loader.html#ac70585eee719d1d6879539bc3e63f541">abort</a> ()</td></tr>
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<tr class="memitem:a3d02066a1d42193ee9914acd9ca5727f"><td class="memItemLeft" align="right" valign="top">KUrl </td><td class="memItemRight" valign="bottom"><a class="el" href="classSyndication_1_1Loader.html#a3d02066a1d42193ee9914acd9ca5727f">discoveredFeedURL</a> () const </td></tr>
<tr class="separator:a3d02066a1d42193ee9914acd9ca5727f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aebd2315194778366e1aa1b281c70a64d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespaceSyndication.html#aaf92d762df59845c8a311e4d08e2d4e4">ErrorCode</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classSyndication_1_1Loader.html#aebd2315194778366e1aa1b281c70a64d">errorCode</a> () const </td></tr>
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<tr class="memitem:a966e3290ce15d5c195d25dcc901b435a"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classSyndication_1_1Loader.html#a966e3290ce15d5c195d25dcc901b435a">loadFrom</a> (const KUrl &url, <a class="el" href="classSyndication_1_1DataRetriever.html">DataRetriever</a> *retriever)</td></tr>
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<tr class="memitem:a6be7f5d4672a0758cebcc2ec94a8aaab"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classSyndication_1_1Loader.html#a6be7f5d4672a0758cebcc2ec94a8aaab">loadFrom</a> (const KUrl &url)</td></tr>
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<tr class="memitem:ad50645b8bc53096830f036a814b481ca"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classSyndication_1_1Loader.html#ad50645b8bc53096830f036a814b481ca">retrieverError</a> () const </td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr class="memitem:af904ff721d294dab91d0d3bdfd6c4c6f"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classSyndication_1_1Loader.html">Loader</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classSyndication_1_1Loader.html#af904ff721d294dab91d0d3bdfd6c4c6f">create</a> ()</td></tr>
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<tr class="memitem:a811880955f7750d0f8d9a782d0fefc46"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="classSyndication_1_1Loader.html">Loader</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classSyndication_1_1Loader.html#a811880955f7750d0f8d9a782d0fefc46">create</a> (QObject *object, const char *slot)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>This class is the preferred way of loading feed sources. </p>
<p>Usage is very straightforward:</p>
<div class="fragment"><div class="line">Loader *loader = <a class="code" href="classSyndication_1_1Loader.html#af904ff721d294dab91d0d3bdfd6c4c6f" title="Constructs a Loader instance.">Loader::create</a>();</div>
<div class="line">connect(loader, SIGNAL(<a class="code" href="classSyndication_1_1Loader.html#abc810aa819a7c8edc5aff356a2920e6a" title="This signal gets emitted when the loading process triggered by calling loadFrom() finished...">loadingComplete</a>(Loader*, FeedPtr, <a class="code" href="namespaceSyndication.html#aaf92d762df59845c8a311e4d08e2d4e4" title="error code indicating fetching or parsing errors">ErrorCode</a>)),</div>
<div class="line"> <span class="keyword">this</span>, SLOT(slotLoadingComplete(Loader*, FeedPtr, <a class="code" href="namespaceSyndication.html#aaf92d762df59845c8a311e4d08e2d4e4" title="error code indicating fetching or parsing errors">ErrorCode</a>)));</div>
<div class="line">loader->loadFrom(<span class="stringliteral">"http://www.blah.org/foobar.rdf"</span>);</div>
</div><!-- fragment --><p>This creates a <a class="el" href="classSyndication_1_1Loader.html" title="This class is the preferred way of loading feed sources.">Loader</a> object, connects it's <a class="el" href="classSyndication_1_1Loader.html#abc810aa819a7c8edc5aff356a2920e6a" title="This signal gets emitted when the loading process triggered by calling loadFrom() finished...">loadingComplete()</a> signal to your custom slot and then makes it load the file '<a href="http://www.blah.org/foobar.rdf'">http://www.blah.org/foobar.rdf'</a>. You could've done something like this as well:</p>
<div class="fragment"><div class="line"><span class="comment">// create the Loader, connect it's signal...</span></div>
<div class="line">loader->loadFrom(<span class="stringliteral">"/home/myself/some-script.py"</span>, <span class="keyword">new</span> OutputRetriever);</div>
</div><!-- fragment --><p>That'd make the <a class="el" href="classSyndication_1_1Loader.html" title="This class is the preferred way of loading feed sources.">Loader</a> use a custom algorithm for retrieving the RSS data; '<a class="el" href="classSyndication_1_1OutputRetriever.html" title="Implements a data retriever which executes a program and stores returned by the program on stdout...">OutputRetriever</a>' will make it execute the script '/home/myself/some-script.py' and assume whatever that script prints to stdout is RSS/Azom markup. This is e.g. handy for conversion scripts, which download a HTML file and convert it's contents into RSS markup.</p>
<p>No matter what kind of retrieval algorithm you employ, your 'slotLoadingComplete' method might look like this:</p>
<div class="fragment"><div class="line"><span class="keywordtype">void</span> MyClass::slotLoadingComplete(Loader* loader, FeedPtr feed, <a class="code" href="namespaceSyndication.html#aaf92d762df59845c8a311e4d08e2d4e4" title="error code indicating fetching or parsing errors">ErrorCode</a> status)</div>
<div class="line">{</div>
<div class="line"> <span class="comment">// Note that Loader::~Loader() is private, so you cannot delete Loader instances.</span></div>
<div class="line"> <span class="comment">// You don't need to do that anyway since Loader instances delete themselves.</span></div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (status != <a class="code" href="namespaceSyndication.html#aaf92d762df59845c8a311e4d08e2d4e4afc529f9c4f5522dd1b4119293e398a68" title="No error occurred, feed was fetched and parsed successfully.">Syndication::Success</a>)</div>
<div class="line"> <span class="keywordflow">return</span>;</div>
<div class="line"></div>
<div class="line"> QString title = feed->title();</div>
<div class="line"> <span class="comment">// do whatever you want with the information.</span></div>
<div class="line">}</div>
</div><!-- fragment -->
<p>Definition at line <a class="el" href="loader_8h_source.html#l00075">75</a> of file <a class="el" href="loader_8h_source.html">loader.h</a>.</p>
</div><h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname">void Syndication::Loader::abort </td>
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<p>aborts the loading process </p>
<p>Definition at line <a class="el" href="loader_8cpp_source.html#l00103">103</a> of file <a class="el" href="loader_8cpp_source.html">loader.cpp</a>.</p>
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<td class="memname"><a class="el" href="classSyndication_1_1Loader.html">Loader</a> * Syndication::Loader::create </td>
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<p>Constructs a <a class="el" href="classSyndication_1_1Loader.html" title="This class is the preferred way of loading feed sources.">Loader</a> instance. </p>
<p>This is pretty much what the default constructor would do, except that it ensures that all <a class="el" href="classSyndication_1_1Loader.html" title="This class is the preferred way of loading feed sources.">Loader</a> instances have been allocated on the heap (this is required so that <a class="el" href="classSyndication_1_1Loader.html" title="This class is the preferred way of loading feed sources.">Loader</a>'s can delete themselves safely after they emitted the <a class="el" href="classSyndication_1_1Loader.html#abc810aa819a7c8edc5aff356a2920e6a" title="This signal gets emitted when the loading process triggered by calling loadFrom() finished...">loadingComplete()</a> signal.). </p>
<dl class="section return"><dt>Returns</dt><dd>A pointer to a new <a class="el" href="classSyndication_1_1Loader.html" title="This class is the preferred way of loading feed sources.">Loader</a> instance. </dd></dl>
<p>Definition at line <a class="el" href="loader_8cpp_source.html#l00051">51</a> of file <a class="el" href="loader_8cpp_source.html">loader.cpp</a>.</p>
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<td class="memname"><a class="el" href="classSyndication_1_1Loader.html">Loader</a> * Syndication::Loader::create </td>
<td>(</td>
<td class="paramtype">QObject * </td>
<td class="paramname"><em>object</em>, </td>
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<td class="paramtype">const char * </td>
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<p>Convenience method. </p>
<p>Does the same as the above method except that it also does the job of connecting the <a class="el" href="classSyndication_1_1Loader.html#abc810aa819a7c8edc5aff356a2920e6a" title="This signal gets emitted when the loading process triggered by calling loadFrom() finished...">loadingComplete()</a> signal to the given slot for you. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">object</td><td>A QObject which features the specified slot </td></tr>
<tr><td class="paramname">slot</td><td>Which slot to connect to. </td></tr>
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</dd>
</dl>
<p>Definition at line <a class="el" href="loader_8cpp_source.html#l00056">56</a> of file <a class="el" href="loader_8cpp_source.html">loader.cpp</a>.</p>
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<td class="memname">KUrl Syndication::Loader::discoveredFeedURL </td>
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<p>returns the URL of a feed discovered in the feed source </p>
<p>Definition at line <a class="el" href="loader_8cpp_source.html#l00116">116</a> of file <a class="el" href="loader_8cpp_source.html">loader.cpp</a>.</p>
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<td class="memname"><a class="el" href="namespaceSyndication.html#aaf92d762df59845c8a311e4d08e2d4e4">Syndication::ErrorCode</a> Syndication::Loader::errorCode </td>
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<p>Retrieves the error code of the last loading process (if any). </p>
<p>Definition at line <a class="el" href="loader_8cpp_source.html#l00098">98</a> of file <a class="el" href="loader_8cpp_source.html">loader.cpp</a>.</p>
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<td class="memname">void Syndication::Loader::loadFrom </td>
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<td class="paramtype">const KUrl & </td>
<td class="paramname"><em>url</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype"><a class="el" href="classSyndication_1_1DataRetriever.html">DataRetriever</a> * </td>
<td class="paramname"><em>retriever</em> </td>
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<p>Loads the feed source referenced by the given URL using the specified retrieval algorithm. </p>
<p>Make sure that you connected to the <a class="el" href="classSyndication_1_1Loader.html#abc810aa819a7c8edc5aff356a2920e6a" title="This signal gets emitted when the loading process triggered by calling loadFrom() finished...">loadingComplete()</a> signal before calling this method so that you're guaranteed to get notified when the loading finished. </p>
<dl class="section note"><dt>Note</dt><dd>A <a class="el" href="classSyndication_1_1Loader.html" title="This class is the preferred way of loading feed sources.">Loader</a> object cannot load from multiple URLs simultaneously; consequently, subsequent calls to loadFrom will be discarded silently, only the first loadFrom request will be executed. </dd></dl>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">url</td><td>A URL referencing the input file. </td></tr>
<tr><td class="paramname">retriever</td><td>A subclass of <a class="el" href="classSyndication_1_1DataRetriever.html" title="Abstract baseclass for all data retriever classes.">DataRetriever</a> which implements a specialized retrieval behaviour. Note that the ownership of the retriever is transferred to the <a class="el" href="classSyndication_1_1Loader.html" title="This class is the preferred way of loading feed sources.">Loader</a>, i.e. the <a class="el" href="classSyndication_1_1Loader.html" title="This class is the preferred way of loading feed sources.">Loader</a> will delete it when it doesn't need it anymore. </td></tr>
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</dd>
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<dl class="section see"><dt>See Also</dt><dd><a class="el" href="classSyndication_1_1DataRetriever.html" title="Abstract baseclass for all data retriever classes.">DataRetriever</a>, <a class="el" href="classSyndication_1_1Loader.html#abc810aa819a7c8edc5aff356a2920e6a" title="This signal gets emitted when the loading process triggered by calling loadFrom() finished...">Loader::loadingComplete()</a> </dd></dl>
<p>Definition at line <a class="el" href="loader_8cpp_source.html#l00079">79</a> of file <a class="el" href="loader_8cpp_source.html">loader.cpp</a>.</p>
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<td class="memname">void Syndication::Loader::loadFrom </td>
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<p>Convenience method. </p>
<p>Does the same as the above method, where <a class="el" href="classSyndication_1_1FileRetriever.html" title="Implements a file retriever, to be used with Loader::loadFrom().">FileRetriever</a> is used as retriever implementation.</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">url</td><td>A URL referencing the input file. </td></tr>
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</dd>
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<p>Definition at line <a class="el" href="loader_8cpp_source.html#l00074">74</a> of file <a class="el" href="loader_8cpp_source.html">loader.cpp</a>.</p>
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<td class="memname">void Syndication::Loader::loadingComplete </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classSyndication_1_1Loader.html">Syndication::Loader</a> * </td>
<td class="paramname"><em>loader</em>, </td>
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<td></td>
<td class="paramtype">Syndication::FeedPtr </td>
<td class="paramname"><em>feed</em>, </td>
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<td class="paramtype"><a class="el" href="namespaceSyndication.html#aaf92d762df59845c8a311e4d08e2d4e4">Syndication::ErrorCode</a> </td>
<td class="paramname"><em>error</em> </td>
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<td>)</td>
<td></td><td></td>
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<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">signal</span></span> </td>
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<p>This signal gets emitted when the loading process triggered by calling <a class="el" href="classSyndication_1_1Loader.html#a966e3290ce15d5c195d25dcc901b435a" title="Loads the feed source referenced by the given URL using the specified retrieval algorithm.">loadFrom()</a> finished. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">loader</td><td>A pointer pointing to the loader object which emitted this signal; this is handy in case you connect multiple loaders to a single slot. </td></tr>
<tr><td class="paramname">feed</td><td>In case errortus is Success, this parameter holds the parsed feed. If fetching/parsing failed, feed is NULL. </td></tr>
<tr><td class="paramname">error</td><td>An error code telling whether there were any problems while retrieving or parsing the data. </td></tr>
</table>
</dd>
</dl>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="classSyndication_1_1Feed.html" title="This class represents a feed document ("Channel" in RSS, "Feed" in Atom).">Feed</a>, <a class="el" href="namespaceSyndication.html#aaf92d762df59845c8a311e4d08e2d4e4" title="error code indicating fetching or parsing errors">ErrorCode</a> </dd></dl>
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<td class="memname">int Syndication::Loader::retrieverError </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<p>the error code returned from the retriever. </p>
<p>Use this if you use your custom retriever implementation and need the specific error, not covered by <a class="el" href="classSyndication_1_1Loader.html#aebd2315194778366e1aa1b281c70a64d" title="Retrieves the error code of the last loading process (if any).">errorCode()</a>. </p>
<p>Definition at line <a class="el" href="loader_8cpp_source.html#l00093">93</a> of file <a class="el" href="loader_8cpp_source.html">loader.cpp</a>.</p>
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<hr/>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="loader_8h_source.html">loader.h</a></li>
<li><a class="el" href="loader_8cpp_source.html">loader.cpp</a></li>
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