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Home >Online Product Documentation >Table of Contents >Syntax for Specifying an Axis in a Query Syntax for Specifying an Axis in a QueryThe previous sections provide examples of XPath expression syntax that uses abbreviations. This section introduces you to the axis syntax that many of the abbreviations represent. For a list of XPath abbreviations, see XPath Abbreviations Quick Reference. You can use axis syntax to specify a location path in a query. An axis specifies the tree relationship between the nodes selected by an expression and the context node. The syntax for specifying an axis in a query is as follows: The axis names are defined in Supported Axes. A node test is a simple expression that tests for a specified node type or node name. For example:
l node() matches any type of node.
l text() matches text or CDATA nodes.
l comment() matches comment nodes.
l processing-instruction() matches any processing instruction.
l processing-instruction(name) matches processing instructions whose target is name.
l name matches elements or attributes whose name is name.
l * matches any elements or any attributes.
XPath 2.0 adds additional tests, such as
l element() matches any element node
l attribute() matches any attribute node
l document-node() matches any document node
In addition, you can follow the node test with any number of filters. |
XML PRODUCTIVITY THROUGH INNOVATION ™
