org.apache.tapestry.services.impl
Class ExpressionCacheImpl

java.lang.Object
  org.apache.tapestry.services.impl.ExpressionCacheImpl

All Implemented Interfaces:

EventListener, ClassCacheInspector, ReportStatusListener, ResetEventListener, ExpressionCache

public class ExpressionCacheImpl
extends Object
implements ExpressionCache, ResetEventListener, ReportStatusListener, ClassCacheInspector

Since:

4.0

Author:

Howard M. Lewis Ship

Constructor Summary

ExpressionCacheImpl()

Method Summary

Object	getCompiledExpression(Object target, String expression) Returns the compiled ognl expression for the given target object class / expression combination.
Object	getCompiledExpression(String expression) Returns the compiled form of the OGNL expression.
void	initializeService()
void	reportStatus(ReportStatusEvent event)
void	resetEventDidOccur()
void	setEvaluator(ExpressionEvaluator evaluator)
void	setServiceId(String serviceId)
boolean	shouldCache(Class type)

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionCacheImpl

public ExpressionCacheImpl()

Method Detail

initializeService

public void initializeService()

resetEventDidOccur

public void resetEventDidOccur()

Specified by:

resetEventDidOccur in interface ResetEventListener

shouldCache

public boolean shouldCache(Class type)

Specified by:

shouldCache in interface ClassCacheInspector

reportStatus

public void reportStatus(ReportStatusEvent event)

Specified by:

reportStatus in interface ReportStatusListener

getCompiledExpression

public Object getCompiledExpression(Object target,
                                    String expression)

Description copied from interface: ExpressionCache

Returns the compiled ognl expression for the given target object class / expression combination.

Specified by:

getCompiledExpression in interface ExpressionCache

Parameters:

target - The object this expression is to be used for.

expression - The expression.

Returns:

The compiled (or new if neccessary) ognl statement.

getCompiledExpression

public Object getCompiledExpression(String expression)

Description copied from interface: ExpressionCache

Returns the compiled form of the OGNL expression.

Specified by:

getCompiledExpression in interface ExpressionCache

setServiceId

public void setServiceId(String serviceId)

setEvaluator

public void setEvaluator(ExpressionEvaluator evaluator)