org.mule.module.scripting.expression

Class AbstractScriptExpressionEvaluator

java.lang.Object

org.mule.module.scripting.expression.AbstractScriptExpressionEvaluator

All Implemented Interfaces:

MuleContextAware, ExpressionEvaluator, Disposable, NamedObject

Direct Known Subclasses:

GroovyExpressionEvaluator

public abstract class AbstractScriptExpressionEvaluator
extends Object
implements ExpressionEvaluator, Disposable, MuleContextAware

An abstract ExpressionEvaluator that can be used for any JSR-233 script engine. If a POJO is passed in it is accessible from the 'payload' namespace. If a MuleMessage instance is used then it is accessible from the message' namespace and the 'payload' namespace is also available.

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<String,Scriptable>	cache
protected MuleContext	muleContext

Fields inherited from interface org.mule.api.lifecycle.Disposable

PHASE_NAME

Constructor Summary

Constructors

Constructor and Description
AbstractScriptExpressionEvaluator()

Method Summary

Methods

Modifier and Type	Method and Description
void	dispose() A lifecycle method where implementor should free up any resources.
Object	evaluate(String expression, MuleMessage message) Extracts a single property from the message
protected Scriptable	getScript(String expression)
void	setMuleContext(MuleContext context)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mule.api.NamedObject

getName

Field Detail

cache

protected Map<String,Scriptable> cache

muleContext

protected MuleContext muleContext

Constructor Detail

AbstractScriptExpressionEvaluator

public AbstractScriptExpressionEvaluator()

Method Detail

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 expression

message - the message to extract from

Returns:

the result of the extraction or null if the property was not found

getScript

protected Scriptable getScript(String expression)

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