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org.activemq.filter
Class XPathExpression  

java.lang.Object
  org.activemq.filter.XPathExpression

All Implemented Interfaces:

BooleanExpression, Expression

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public final class XPathExpression

extends java.lang.Object

implements BooleanExpression

Used to evaluate an XPath Expression in a JMS selector.

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Nested Class Summary
static interface	XPathExpression.XPathEvaluator

 

Field Summary
private static java.lang.String	DEFAULT_EVALUATOR_CLASS_NAME
private  XPathExpression.XPathEvaluator	evaluator
private static java.lang.reflect.Constructor	EVALUATOR_CONSTRUCTOR
private static java.lang.String	EVALUATOR_SYSTEM_PROPERTY
private static org.apache.commons.logging.Log	log
private  java.lang.String	xpath

 

Constructor Summary
(package private)	XPathExpression(java.lang.String xpath)

 

Method Summary
private  XPathExpression.XPathEvaluator	createEvaluator(java.lang.String xpath2)
java.lang.Object	evaluate(javax.jms.Message message)
private static java.lang.reflect.Constructor	getXPathEvaluatorConstructor(java.lang.String cn)
java.lang.String	toString()           Convert this Object to a human-readable String.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

log

private static final org.apache.commons.logging.Log log

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EVALUATOR_SYSTEM_PROPERTY

private static final java.lang.String EVALUATOR_SYSTEM_PROPERTY

See Also:

Constant Field Values

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DEFAULT_EVALUATOR_CLASS_NAME

private static final java.lang.String DEFAULT_EVALUATOR_CLASS_NAME

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EVALUATOR_CONSTRUCTOR

private static final java.lang.reflect.Constructor EVALUATOR_CONSTRUCTOR

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xpath

private final java.lang.String xpath

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evaluator

private final XPathExpression.XPathEvaluator evaluator

Constructor Detail

XPathExpression

XPathExpression(java.lang.String xpath)

Method Detail

getXPathEvaluatorConstructor

private static java.lang.reflect.Constructor getXPathEvaluatorConstructor(java.lang.String cn)
                                                                   throws java.lang.ClassNotFoundException,
                                                                          java.lang.SecurityException,
                                                                          java.lang.NoSuchMethodException

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createEvaluator

private XPathExpression.XPathEvaluator createEvaluator(java.lang.String xpath2)

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evaluate

public java.lang.Object evaluate(javax.jms.Message message)
                          throws javax.jms.JMSException

Specified by:

evaluate in interface Expression

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toString

public java.lang.String toString()

Description copied from class: java.lang.Object

Convert this Object to a human-readable String. There are no limits placed on how long this String should be or what it should contain. We suggest you make it as intuitive as possible to be able to place it into System.out.println() 55 and such.

It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.

This method will be called when performing string concatenation with this object. If the result is null, string concatenation will instead use "null".

The default implementation returns getClass().getName() + "@" + Integer.toHexString(hashCode()).

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