Package com.bc.ceres.metadata

Class XPathHandler

java.lang.Object

com.bc.ceres.metadata.XPathHandler

public class XPathHandler
extends Object

Handles XPath expressions in velocity template files. The expressions parse an input xml file.

Since:

Ceres 0.13.2

Constructor Summary

Constructors

Constructor	Description
XPathHandler()

Method Summary

Modifier and Type	Method	Description
String	extractXml(String xpath, Object document)	Run a XPath query.
String	run(String xpath, Object document)	Run a XPath query.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

XPathHandler

public XPathHandler()

Method Detail

run

public String run(String xpath,
                  Object document)

Run a XPath query. Call with $xpath.run("XPath expression", $source-XML) in the velocity template. e.g. $xpath.run("//creationDate", $metadata)

Parameters:

xpath - The XPath expression

document - Either an instance of ReaderResource, Element or a raw xml String.

Returns:

The demanded information from the XML document.

extractXml

public String extractXml(String xpath,
                         Object document)
                  throws XPathExpressionException

Run a XPath query. Call with $xpath.run("XPath expression", $source-XML) in the velocity template. e.g. $xpath.run("//creationDate", $metadata)

Parameters:

xpath - The XPath expression

document - Either an instance of ReaderResource, Element or a raw xml String.

Returns:

The whole XML snippet, which starts with the tag selected in the xpath expression.

Throws:

XPathExpressionException