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< h1 > simple-context-item.cpp< / h1 > This example parses a document and sets it as the context item. It then executes an XQuery expression that navigates relative to the context item.< p >
< div class = "fragment" > < pre class = "fragment" > < span class = "preprocessor" > #include < iostream> < / span >
< span class = "preprocessor" > #include < < a class = "code" href = "xqilla-simple_8hpp.html" > xqilla/xqilla-simple.hpp< / a > > < / span >
< 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 by creating the factory object< / span >
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< a name = "_a5" > < / a > < a class = "code" href = "classXQilla.html" > XQilla< / a > xqilla;
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< span class = "comment" > // Parse an XQuery expression< / span >
< span class = "comment" > // (AutoDelete deletes the object at the end of the scope)< / span >
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< a name = "_a6" > < / a > < a class = "code" href = "classAutoDelete.html" > AutoDelete< XQQuery> < / a > query(xqilla.< a name = "a7" > < / a > < a class = "code" href = "classXQilla.html#z1_0" > parse< / a > (X(< span class = "stringliteral" > "foo/bar/@baz"< / span > )));
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< span class = "comment" > // Create a context object< / span >
< a class = "code" href = "classAutoDelete.html" > AutoDelete< DynamicContext> < / a > context(query-> createDynamicContext());
< span class = "comment" > // Parse a document, and set it as the context item< / span >
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< a name = "_a8" > < / a > < a class = "code" href = "classSequence.html" > Sequence< / a > seq = context-> resolveDocument(X(< span class = "stringliteral" > "foo.xml"< / span > ));
< span class = "keywordflow" > if< / span > (!seq.< a name = "a9" > < / a > < a class = "code" href = "classSequence.html#a24" > isEmpty< / a > () & & seq.< a name = "a10" > < / a > < a class = "code" href = "classSequence.html#a8" > first< / a > ()-> isNode()) {
context-> setContextItem(seq.< a class = "code" href = "classSequence.html#a8" > first< / a > ());
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context-> setContextPosition(1);
context-> setContextSize(1);
}
< span class = "comment" > // Execute the query, using the context< / span >
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< a name = "_a11" > < / a > < a class = "code" href = "classResult.html" > Result< / a > result = query-> execute(context);
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< span class = "comment" > // Iterate over the results, printing them< / span >
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< a name = "_a12" > < / a > < a class = "code" href = "classRefCountPointer.html" > Item::Ptr< / a > item;
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< span class = "keywordflow" > while< / span > (item = result-> next(context)) {
std::cout < < UTF8(item-> asString(context)) < < std::endl;
}
< span class = "keywordflow" > return< / span > 0;
}
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< / pre > < / div > < hr size = "1" > < address style = "align: right;" > < small > Generated on Fri Sep 25 06:55:26 2009 for XQilla Simple API by
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< img src = "doxygen.png" alt = "doxygen" align = "middle" border = "0" > < / a > 1.3.9.1 < / small > < / address >
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