XQuilla/docs/dom3-api/dom-basic_8cpp-example.html
2020-02-17 22:23:16 +01:00

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<h1>dom-basic.cpp</h1><p>This example executes a simple XQuery expression ("1 to 100"), which returns the numbers from 1 to 100 inclusive.</p>
<div class="fragment"><pre class="fragment"><span class="preprocessor">#include &lt;iostream&gt;</span>
<span class="preprocessor">#include &lt;<a class="code" href="DOM_8hpp.html">xercesc/dom/DOM.hpp</a>&gt;</span>
<span class="preprocessor">#include &lt;<a class="code" href="xqilla-dom3_8hpp.html">xqilla/xqilla-dom3.hpp</a>&gt;</span>
XERCES_CPP_NAMESPACE_USE;
<span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> *argv[]) {
<span class="comment">// Initialise Xerces-C and XQilla using XQillaPlatformUtils</span>
<a name="a0"></a><a class="code" href="classXQillaPlatformUtils.html#ac769d09556ec43ecb94d1822783ba0b8" title="Perform XQilla initialization.">XQillaPlatformUtils::initialize</a>();
<span class="comment">// Get the XQilla DOMImplementation object</span>
DOMImplementation *xqillaImplementation =
DOMImplementationRegistry::getDOMImplementation(X(<span class="stringliteral">&quot;XPath2 3.0&quot;</span>));
<span class="comment">// Make sure the DOM objects are released before we call XQillaPlatformUtils::terminate()</span>
{
<span class="comment">// Create a DOMDocument</span>
<a name="_a1"></a><a class="code" href="classAutoRelease.html">AutoRelease&lt;DOMDocument&gt;</a> document(xqillaImplementation-&gt;createDocument());
<span class="comment">// Parse an XPath 2 expression</span>
<a class="code" href="classAutoRelease.html">AutoRelease&lt;DOMXPathExpression&gt;</a> expression(document-&gt;createExpression(X(<span class="stringliteral">&quot;1 to 100&quot;</span>), 0));
<span class="comment">// Execute the query</span>
<a class="code" href="classAutoRelease.html">AutoRelease&lt;DOMXPathResult&gt;</a> result(expression-&gt;evaluate(0, DOMXPathResult::ITERATOR_RESULT_TYPE, 0));
<span class="comment">// Iterate over the results, printing them</span>
<span class="keywordflow">while</span>(result-&gt;iterateNext()) {
std::cout &lt;&lt; result-&gt;getIntegerValue() &lt;&lt; std::endl;
}
}
<span class="comment">// Terminate Xerces-C and XQilla using XQillaPlatformUtils</span>
<a name="a2"></a><a class="code" href="classXQillaPlatformUtils.html#a0bd04a35d4cb26894497c6ff4d8e2105" title="Perform XQilla termination.">XQillaPlatformUtils::terminate</a>();
<span class="keywordflow">return</span> 0;
}
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