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 java.lang.String`	`EXPRESSION_FACTORY_FACTORY_INIT_PARAM` Initialization parameter to decide the implementation of `ExpressionFactoryFactory`.
`protected ExpressionFactory`	`expressionFactory` The EL expression factory.
`protected ELResolver`	`resolver` The EL resolver to use.

Constructor Summary

Constructors
Constructor and Description

ELAttributeEvaluator()
Constructor.

Constructors
Constructor and Description
`ELAttributeEvaluator()` Constructor.

Method Summary

Methods
Modifier and Type	Method and Description
`java.lang.Object`	`evaluate(java.lang.String expression, TilesRequestContext request)` Evaluates an expression.
`void`	`init(java.util.Map<java.lang.String,java.lang.String> initParameters)` Initializes the attribute evaluator.
`void`	`setApplicationContext(TilesApplicationContext applicationContext)` Sets the Tiles application context.
`void`	`setExpressionFactory(ExpressionFactory expressionFactory)` Sets the expression factory to use.
`void`	`setResolver(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 java.lang.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 ExpressionFactory expressionFactory
```
    The EL expression factory.
    
    Since:
    
    2.2.1
  - resolver
```
protected 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(java.util.Map<java.lang.String,java.lang.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(ExpressionFactory expressionFactory)
```
    Sets the expression factory to use.
    
    Parameters:
    expressionFactory - The expression factory.
    Since:
    
    2.2.1
  - setResolver
```
public void setResolver(ELResolver resolver)
```
    Sets the EL resolver to use.
    
    Parameters:
    resolver - The EL resolver.
    Since:
    
    2.2.1
  - evaluate
```
public java.lang.Object evaluate(java.lang.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.

Class ELAttributeEvaluator

Field Summary

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Field Detail

EXPRESSION_FACTORY_FACTORY_INIT_PARAM

applicationContext

expressionFactory

resolver

Constructor Detail

ELAttributeEvaluator

Method Detail

init

setApplicationContext

setExpressionFactory

setResolver

evaluate