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org.apache.tiles.evaluator
Class BasicAttributeEvaluatorFactory

java.lang.Object
  org.apache.tiles.evaluator.BasicAttributeEvaluatorFactory

All Implemented Interfaces:

AttributeEvaluatorFactory

public class BasicAttributeEvaluatorFactory
extends Object
implements AttributeEvaluatorFactory

Basic implementation of AttributeEvaluatorFactory. It supports a default attribute evaluator, in case the language is not recognized.

Since:

2.2.0

Version:

$Rev: 788032 $ $Date: 2009-06-24 16:08:32 +0200 (mer, 24 giu 2009) $

Constructor Summary

BasicAttributeEvaluatorFactory(AttributeEvaluator defaultEvaluator)
Constructor.

Method Summary

AttributeEvaluator	getAttributeEvaluator(Attribute attribute) Creates and attribute evaluator using an attribute.
AttributeEvaluator	getAttributeEvaluator(String language) Creates and attribute evaluator for the given expression language.
void	registerAttributeEvaluator(String language, AttributeEvaluator evaluator) Registers a known expression language with its attribute evaluator.

Methods inherited from class java.lang.Object

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

Constructor Detail

BasicAttributeEvaluatorFactory

public BasicAttributeEvaluatorFactory(AttributeEvaluator defaultEvaluator)

Constructor.

Parameters:

defaultEvaluator - The default evaluator to return if it is not found in the map of known languages.

Since:

2.2.0

Method Detail

registerAttributeEvaluator

public void registerAttributeEvaluator(String language,
                                       AttributeEvaluator evaluator)

Registers a known expression language with its attribute evaluator.

Parameters:

language - The name of the expression language.

evaluator - The associated attribute evaluator.

Since:

2.2.0

getAttributeEvaluator

public AttributeEvaluator getAttributeEvaluator(String language)

Creates and attribute evaluator for the given expression language.

Specified by:

getAttributeEvaluator in interface AttributeEvaluatorFactory

Parameters:

language - The name of the expression language.

Returns:

The attribute evaluator. It must not be null.

getAttributeEvaluator

public AttributeEvaluator getAttributeEvaluator(Attribute attribute)

Creates and attribute evaluator using an attribute.

Specified by:

getAttributeEvaluator in interface AttributeEvaluatorFactory

Parameters:

attribute - The attribute used to obtain the evaluator.

Returns:

The attribute evaluator. It must not be null.