public class XPathTool extends Object
All methods take a string XPath specification, along with a context, and produces a resulting java.util.List.
The W3C XPath Specification (http://www.w3.org/TR/xpath) refers to NodeSets repeatedly, but this implementation simply uses java.util.List to hold all Nodes. A 'Node' is any object in a JDOM object tree, such as an org.jdom.Element, org.jdom.Document, or org.jdom.Attribute.
To use it in Velocity, do this:
#set $authors = $xpath.applyTo("document/author", $root) #foreach ($author in $authors) $author.getValue() #end #set $chapterTitles = $xpath.applyTo("document/chapter/@title", $root) #foreach ($title in $chapterTitles) $title.getValue() #end
In newer Anakia builds, this class is obsoleted in favor of calling
selectNodes()
on the element directly:
#set $authors = $root.selectNodes("document/author") #foreach ($author in $authors) $author.getValue() #end #set $chapterTitles = $root.selectNodes("document/chapter/@title") #foreach ($title in $chapterTitles) $title.getValue() #end
Constructor and Description |
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XPathTool()
Constructor does nothing, as this is mostly
just objectified static methods
|
Modifier and Type | Method and Description |
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NodeList |
applyTo(String xpathSpec,
org.jdom.Document doc)
Apply an XPath to a JDOM Document
|
NodeList |
applyTo(String xpathSpec,
org.jdom.Element elem)
Apply an XPath to a JDOM Element
|
NodeList |
applyTo(String xpathSpec,
List nodeSet)
Apply an XPath to a nodeset
|
public XPathTool()
public NodeList applyTo(String xpathSpec, org.jdom.Document doc)
xpathSpec
- The XPath to applydoc
- The Document contextpublic NodeList applyTo(String xpathSpec, org.jdom.Element elem)
xpathSpec
- The XPath to applyelem
- The Element contextCopyright © 2000–2017. All rights reserved.