This topic explains how to search in a DOM tree using an XPath expression.
Before you start, you must:
understand the architecture and classes of the XML Engine component.
have created an RXmlEngDocument (called myDoc in this example), either by parsing an XML file (as indicated in the XML DOM Parsing Tutorial ) or by adding nodes to a new DOM tree.
XPath is a simple query language for XML. An XPath expression describes a subset of an XML tree, such as all the elements with a specified name, or all the children of a specific node. Evaluating an XPath expression means searching in the XML tree for matching nodes or content: clients of the XML Engine use it to explore XML data.
The following steps show how to make an XPath query with the XML Engine.
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