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XPathTool (Apache Velocity 1.6.1 API)
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org.apache.velocity.anakia</FONT>
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Class XPathTool</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.velocity.anakia.XPathTool</B>
</PRE>
<HR>
<DL>
<DT><PRE>public class <B>XPathTool</B><DT>extends <A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></DL>
</PRE>
<P>
This class adds an entrypoint into XPath functionality,
for Anakia.
<p>
All methods take a string XPath specification, along with
a context, and produces a resulting java.util.List.
<p>
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.
<p>
To use it in Velocity, do this:
<p>
<pre>
#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
</pre>
<p>
In newer Anakia builds, this class is obsoleted in favor of calling
<code>selectNodes()</code> on the element directly:
<pre>
#set $authors = $root.selectNodes("document/author")
#foreach ($author in $authors)
$author.getValue()
#end
#set $chapterTitles = $root.selectNodes("document/chapter/@title")
#foreach ($title in $chapterTitles)
$title.getValue()
#end
</pre>
<p>
<P>
<P>
<DL>
<DT><B>Version:</B></DT>
<DD>$Id: XPathTool.java 463298 2006-10-12 16:10:32Z henning $</DD>
<DT><B>Author:</B></DT>
<DD><a href="mailto:bob@werken.com">bob mcwhirter</a>, <a href="mailto:jon@latchkey.com">Jon S. Stevens</a>, <a href="mailto:szegedia@freemail.hu">Attila Szegedi</a></DD>
</DL>
<HR>
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<TD><CODE><B><A HREF="../../../../org/apache/velocity/anakia/XPathTool.html#XPathTool()">XPathTool</A></B>()</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Constructor does nothing, as this is mostly
just objectified static methods</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/apache/velocity/anakia/NodeList.html" title="class in org.apache.velocity.anakia">NodeList</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/velocity/anakia/XPathTool.html#applyTo(java.lang.String, org.jdom.Document)">applyTo</A></B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;xpathSpec,
<A HREF="http://www.jdom.org/docs/apidocs/org/jdom/Document.html?is-external=true" title="class or interface in org.jdom">Document</A>&nbsp;doc)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Apply an XPath to a JDOM Document</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/apache/velocity/anakia/NodeList.html" title="class in org.apache.velocity.anakia">NodeList</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/velocity/anakia/XPathTool.html#applyTo(java.lang.String, org.jdom.Element)">applyTo</A></B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;xpathSpec,
<A HREF="http://www.jdom.org/docs/apidocs/org/jdom/Element.html?is-external=true" title="class or interface in org.jdom">Element</A>&nbsp;elem)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Apply an XPath to a JDOM Element</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../../org/apache/velocity/anakia/NodeList.html" title="class in org.apache.velocity.anakia">NodeList</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/velocity/anakia/XPathTool.html#applyTo(java.lang.String, java.util.List)">applyTo</A></B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;xpathSpec,
<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&nbsp;nodeSet)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Apply an XPath to a nodeset</TD>
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<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
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<A NAME="XPathTool()"><!-- --></A><H3>
XPathTool</H3>
<PRE>
public <B>XPathTool</B>()</PRE>
<DL>
<DD>Constructor does nothing, as this is mostly
just objectified static methods
<P>
</DL>
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<A NAME="applyTo(java.lang.String, org.jdom.Document)"><!-- --></A><H3>
applyTo</H3>
<PRE>
public <A HREF="../../../../org/apache/velocity/anakia/NodeList.html" title="class in org.apache.velocity.anakia">NodeList</A> <B>applyTo</B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;xpathSpec,
<A HREF="http://www.jdom.org/docs/apidocs/org/jdom/Document.html?is-external=true" title="class or interface in org.jdom">Document</A>&nbsp;doc)</PRE>
<DL>
<DD>Apply an XPath to a JDOM Document
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>xpathSpec</CODE> - The XPath to apply<DD><CODE>doc</CODE> - The Document context
<DT><B>Returns:</B><DD>A list of selected nodes</DL>
</DD>
</DL>
<HR>
<A NAME="applyTo(java.lang.String, org.jdom.Element)"><!-- --></A><H3>
applyTo</H3>
<PRE>
public <A HREF="../../../../org/apache/velocity/anakia/NodeList.html" title="class in org.apache.velocity.anakia">NodeList</A> <B>applyTo</B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;xpathSpec,
<A HREF="http://www.jdom.org/docs/apidocs/org/jdom/Element.html?is-external=true" title="class or interface in org.jdom">Element</A>&nbsp;elem)</PRE>
<DL>
<DD>Apply an XPath to a JDOM Element
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>xpathSpec</CODE> - The XPath to apply<DD><CODE>elem</CODE> - The Element context
<DT><B>Returns:</B><DD>A list of selected nodes</DL>
</DD>
</DL>
<HR>
<A NAME="applyTo(java.lang.String, java.util.List)"><!-- --></A><H3>
applyTo</H3>
<PRE>
public <A HREF="../../../../org/apache/velocity/anakia/NodeList.html" title="class in org.apache.velocity.anakia">NodeList</A> <B>applyTo</B>(<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;xpathSpec,
<A HREF="http://java.sun.com/j2se/1.4.2/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&nbsp;nodeSet)</PRE>
<DL>
<DD>Apply an XPath to a nodeset
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>xpathSpec</CODE> - The XPath to apply<DD><CODE>nodeSet</CODE> - The nodeset context
<DT><B>Returns:</B><DD>A list of selected nodes</DL>
</DD>
</DL>
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