org.mule.module.xml.expression
Class JaxpXPathExpressionEvaluator
java.lang.Object
org.mule.module.xml.expression.JaxpXPathExpressionEvaluator
- All Implemented Interfaces:
- MuleContextAware, ExpressionEvaluator, Disposable, Initialisable, NamedObject
public class JaxpXPathExpressionEvaluator
- extends Object
- implements ExpressionEvaluator, Initialisable, Disposable, MuleContextAware
Uses JAXP XPath processing to evaluate xpath expressions against Xml fragments and
documents
Note that the JAXP Expression evaluator differs from the Mule XPATH evaluator
slightly since you can set the JAXP return type as a prefix to the expression i.e.
xpath2:[type]/foo/bar
Where the type can either be boolean, string, number, node or nodeset.
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
JaxpXPathExpressionEvaluator
public JaxpXPathExpressionEvaluator()
getName
public String getName()
- Description copied from interface:
NamedObject
- Gets the name of the object
- Specified by:
getName
in interface NamedObject
- Returns:
- the name of the object
setMuleContext
public void setMuleContext(MuleContext context)
- Specified by:
setMuleContext
in interface MuleContextAware
initialise
public void initialise()
throws InitialisationException
- Description copied from interface:
Initialisable
- Method used to perform any initialisation work. If a fatal error occurs during
initialisation an
InitialisationException
should be thrown,
causing the Mule instance to shutdown. If the error is recoverable, say by
retrying to connect, a RecoverableException
should be thrown.
There is no guarantee that by throwing a Recoverable exception that the Mule
instance will not shut down.
- Specified by:
initialise
in interface Initialisable
- Throws:
InitialisationException
- if a fatal error occurs causing the Mule instance to shutdown
RecoverableException
- if an error occurs that can be recovered from
evaluate
public Object evaluate(String expression,
MuleMessage message)
- Extracts a single property from the message
- Specified by:
evaluate
in interface ExpressionEvaluator
- Parameters:
expression
- the property expression or expressionmessage
- the message to extract from
- Returns:
- the result of the extraction or null if the property was not found
getXPath
protected XPathExpression getXPath(String expression)
throws XPathExpressionException
- Throws:
XPathExpressionException
createXPath
protected XPathExpression createXPath(String expression)
throws XPathExpressionException
- Throws:
XPathExpressionException
dispose
public void dispose()
- A lifecycle method where implementor should free up any resources. If an
exception is thrown it should just be logged and processing should continue.
This method should not throw Runtime exceptions.
- Specified by:
dispose
in interface Disposable
getNamespaceManager
public NamespaceManager getNamespaceManager()
setNamespaceManager
public void setNamespaceManager(NamespaceManager namespaceManager)
getMuleContext
public MuleContext getMuleContext()
getReturnType
public QName getReturnType()
setReturnType
public void setReturnType(QName returnType)
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