org.apache.tiles.el

Class ELAttributeEvaluator

java.lang.Object

org.apache.tiles.evaluator.AbstractAttributeEvaluator

org.apache.tiles.el.ELAttributeEvaluator

All Implemented Interfaces:

TilesApplicationContextAware, AttributeEvaluator

Direct Known Subclasses:

ELAttributeEvaluator

public class ELAttributeEvaluator
extends AbstractAttributeEvaluator
implements TilesApplicationContextAware

Evaluates string expression with typical EL syntax.
You can use normal EL syntax, knowing that the root objects are TilesRequestContext, TilesApplicationContext and beans contained in request, session and application scope.

Since:

2.2.1

Version:

$Rev: 817357 $ $Date: 2009-09-21 20:16:20 +0200 (lun, 21 set 2009) $

Field Summary

Fields

Modifier and Type	Field and Description
protected TilesApplicationContext	applicationContext The Tiles application context.
static String	EXPRESSION_FACTORY_FACTORY_INIT_PARAM Initialization parameter to decide the implementation of ExpressionFactoryFactory.
protected javax.el.ExpressionFactory	expressionFactory The EL expression factory.
protected javax.el.ELResolver	resolver The EL resolver to use.

Constructor Summary

Constructors

Constructor and Description
ELAttributeEvaluator() Constructor.

Method Summary

Modifier and Type	Method and Description
Object	evaluate(String expression, TilesRequestContext request) Evaluates an expression.
void	init(Map<String,String> initParameters) Initializes the attribute evaluator.
void	setApplicationContext(TilesApplicationContext applicationContext) Sets the Tiles application context.
void	setExpressionFactory(javax.el.ExpressionFactory expressionFactory) Sets the expression factory to use.
void	setResolver(javax.el.ELResolver resolver) Sets the EL resolver to use.

Methods inherited from class org.apache.tiles.evaluator.AbstractAttributeEvaluator

evaluate

Methods inherited from class java.lang.Object

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

Field Detail

EXPRESSION_FACTORY_FACTORY_INIT_PARAM

public static final String EXPRESSION_FACTORY_FACTORY_INIT_PARAM

Initialization parameter to decide the implementation of ExpressionFactoryFactory.

Since:

2.2.1

See Also:

Constant Field Values

applicationContext

protected TilesApplicationContext applicationContext

The Tiles application context.

Since:

2.2.1

expressionFactory

protected javax.el.ExpressionFactory expressionFactory

The EL expression factory.

Since:

2.2.1

resolver

protected javax.el.ELResolver resolver

The EL resolver to use.

Since:

2.2.1

Constructor Detail

ELAttributeEvaluator

public ELAttributeEvaluator()

Constructor.

Since:

2.2.1

Method Detail

init

public void init(Map<String,String> initParameters)

Initializes the attribute evaluator.

Specified by:

init in interface AttributeEvaluator

Parameters:

initParameters - The initialization parameters.

setApplicationContext

public void setApplicationContext(TilesApplicationContext applicationContext)

Sets the Tiles application context.

Specified by:

setApplicationContext in interface TilesApplicationContextAware

Parameters:

applicationContext - The Tiles application context.

setExpressionFactory

public void setExpressionFactory(javax.el.ExpressionFactory expressionFactory)

Sets the expression factory to use.

Parameters:

expressionFactory - The expression factory.

Since:

2.2.1

setResolver

public void setResolver(javax.el.ELResolver resolver)

Sets the EL resolver to use.

Parameters:

resolver - The EL resolver.

Since:

2.2.1

evaluate

public Object evaluate(String expression,
                       TilesRequestContext request)

Evaluates an expression.

Specified by:

evaluate in interface AttributeEvaluator

Parameters:

expression - The expression to evaluate.

request - The request object.

Returns:

The evaluated object.