org.mule.module.xml.expression
Class AbstractXPathExpressionEvaluator
java.lang.Object
org.mule.module.xml.expression.AbstractXPathExpressionEvaluator
- All Implemented Interfaces:
- MuleContextAware, ExpressionEvaluator, Disposable, NamedObject
- Direct Known Subclasses:
- BeanPayloadExpressionEvaluator, XPathExpressionEvaluator
public abstract class AbstractXPathExpressionEvaluator
- extends Object
- implements ExpressionEvaluator, Disposable, MuleContextAware
Provides a base class for XPath property extractors. The XPath engine used is jaxen (http://jaxen.org) which supports
XPath queries on other object models such as JavaBeans as well as Xml
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
AbstractXPathExpressionEvaluator
public AbstractXPathExpressionEvaluator()
setMuleContext
public void setMuleContext(MuleContext context)
- Specified by:
setMuleContext
in interface MuleContextAware
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
addNamespaces
protected void addNamespaces(NamespaceManager manager,
org.jaxen.XPath xpath)
setName
public final void setName(String name)
- Sets the name of the object
- Specified by:
setName
in interface NamedObject
- Parameters:
name
- the name of the object
getXPath
protected org.jaxen.XPath getXPath(String expression,
Object object)
throws org.jaxen.JaxenException
- Throws:
org.jaxen.JaxenException
createXPath
protected abstract org.jaxen.XPath createXPath(String expression,
Object object)
throws org.jaxen.JaxenException
- Throws:
org.jaxen.JaxenException
extractResultsFromNodes
protected List extractResultsFromNodes(List results)
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()
extractResultFromNode
protected abstract Object extractResultFromNode(Object result)
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