XQuilla/docs/simple-api/simple-basic_8cpp-example.html
2020-02-17 22:24:47 +01:00

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<div class="title">simple-basic.cpp</div> </div>
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<p>This example executes a simple XQuery expression ("1 to 100"), which returns the numbers from 1 to 100 inclusive.</p>
<div class="fragment"><div class="line"><span class="preprocessor">#include &lt;iostream&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;<a class="code" href="xqilla-simple_8hpp.html">xqilla/xqilla-simple.hpp</a>&gt;</span></div>
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<div class="line"><span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> *argv[]) {</div>
<div class="line"> <span class="comment">// Initialise Xerces-C and XQilla by creating the factory object</span></div>
<div class="line"> <a name="_a0"></a><a class="code" href="classXQilla.html">XQilla</a> xqilla;</div>
<div class="line"></div>
<div class="line"> <span class="comment">// Parse an XQuery expression</span></div>
<div class="line"> <span class="comment">// (AutoDelete deletes the object at the end of the scope)</span></div>
<div class="line"> <a name="_a1"></a><a class="code" href="classAutoDelete.html">AutoDelete&lt;XQQuery&gt;</a> query(xqilla.<a name="a2"></a><a class="code" href="classXQilla.html#a7475d47b7b2fc51434ba9a381431f7ec">parse</a>(X(<span class="stringliteral">&quot;1 to 100&quot;</span>)));</div>
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<div class="line"> <span class="comment">// Create a context object</span></div>
<div class="line"> <a class="code" href="classAutoDelete.html">AutoDelete&lt;DynamicContext&gt;</a> context(query-&gt;createDynamicContext());</div>
<div class="line"></div>
<div class="line"> <span class="comment">// Execute the query, using the context</span></div>
<div class="line"> <a name="_a3"></a><a class="code" href="classResult.html">Result</a> result = query-&gt;execute(context);</div>
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<div class="line"> <span class="comment">// Iterate over the results, printing them</span></div>
<div class="line"> <a name="_a4"></a><a class="code" href="classRefCountPointer.html">Item::Ptr</a> item;</div>
<div class="line"> <span class="keywordflow">while</span>(item = result-&gt;next(context)) {</div>
<div class="line"> std::cout &lt;&lt; UTF8(item-&gt;<a name="a5"></a><a class="code" href="classItem.html#aeefef8ff091f935f4c81b53031582561">asString</a>(context)) &lt;&lt; std::endl;</div>
<div class="line"> }</div>
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<div class="line"> <span class="keywordflow">return</span> 0;</div>
<div class="line">}</div>
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