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50
51//! [0]
52myInstance = QXmlNodeModelIndex();
53//! [0]
54
55//! [1]
56QFile queryFile(argv[1]);
57QFile chemistryData(argv[2]);
58QString moleculeName = argv[3];
59
60QXmlQuery query;
61query.setQuery(sourceCode: &queryFile, documentURI: QUrl::fromLocalFile(localfile: queryFile.fileName()));
62
63ChemistryNodeModel myNodeModel(query.namePool(), chemistryData);
64QXmlNodeModelIndex startNode = myNodeModel.nodeFor(moleculeName);
65query.bindVariable(localName: "queryRoot", value: startNode);
66
67QFile out;
68out.open(stdout, ioFlags: QIODevice::WriteOnly);
69
70QXmlSerializer serializer(query, &out);
71query.evaluateTo(callback: &serializer);
72//! [1]
73

source code of qtxmlpatterns/src/xmlpatterns/doc/snippets/code/src_xmlpatterns_api_qabstractxmlnodemodel.cpp