org.apache.activemq.filter

Class MultiExpressionEvaluator.CacheExpression

java.lang.Object

org.apache.activemq.filter.UnaryExpression

org.apache.activemq.filter.MultiExpressionEvaluator.CacheExpression

All Implemented Interfaces:

Expression

Enclosing class:

MultiExpressionEvaluator

public class MultiExpressionEvaluator.CacheExpression
extends UnaryExpression

A UnaryExpression that caches the result of the nested expression. The cached value is valid if the CacheExpression.cview==MultiExpressionEvaluator.view

Field Summary

Fields inherited from class org.apache.activemq.filter.UnaryExpression

right

Constructor Summary

Constructors

Constructor and Description
CacheExpression(Expression realExpression)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o) TODO: more efficient hashCode()
Object	evaluate(MessageEvaluationContext message)
String	getExpressionSymbol() Returns the symbol that represents this binary expression.
int	hashCode() TODO: more efficient hashCode()
String	toString()

Methods inherited from class org.apache.activemq.filter.UnaryExpression

createBooleanCast, createInExpression, createNegate, createNOT, createXPath, createXQuery, getRight, setRight

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

CacheExpression

public CacheExpression(Expression realExpression)

Method Detail

evaluate

public Object evaluate(MessageEvaluationContext message)
                throws javax.jms.JMSException

Returns:

the value of this expression

Throws:

javax.jms.JMSException

See Also:

Expression.evaluate(MessageEvaluationContext)

hashCode

public int hashCode()

Description copied from class: UnaryExpression

TODO: more efficient hashCode()

Overrides:

hashCode in class UnaryExpression

See Also:

Object.hashCode()

equals

public boolean equals(Object o)

Description copied from class: UnaryExpression

TODO: more efficient hashCode()

Overrides:

equals in class UnaryExpression

See Also:

Object.equals(java.lang.Object)

getExpressionSymbol

public String getExpressionSymbol()

Description copied from class: UnaryExpression

Returns the symbol that represents this binary expression. For example, addition is represented by "+"

Specified by:

getExpressionSymbol in class UnaryExpression

Returns:

toString

public String toString()

Overrides:

toString in class UnaryExpression

See Also:

Object.toString()