org.springframework.binding.expression.support
Class CollectionAddingExpression

java.lang.Object
  org.springframework.binding.expression.support.CollectionAddingExpression

All Implemented Interfaces:

Expression, SettableExpression

public class CollectionAddingExpression
extends java.lang.Object
implements SettableExpression

A settable expression that adds non-null values to a collection.

Author:

Keith Donald

Constructor Summary

CollectionAddingExpression(Expression collectionExpression)
Creates a collection adding property expression.

Method Summary

java.lang.Object	evaluate(java.lang.Object target, EvaluationContext context) Evaluate the expression encapsulated by this evaluator against the provided target object and return the result of the evaluation.
void	evaluateToSet(java.lang.Object target, java.lang.Object value, EvaluationContext context) Evaluate this expression against the target object to set its value to the value provided.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionAddingExpression

public CollectionAddingExpression(Expression collectionExpression)

Creates a collection adding property expression.

Parameters:

collectionExpression - the collection expression

Method Detail

evaluate

public java.lang.Object evaluate(java.lang.Object target,
                                 EvaluationContext context)
                          throws EvaluationException

Description copied from interface: Expression

Evaluate the expression encapsulated by this evaluator against the provided target object and return the result of the evaluation.

Specified by:

evaluate in interface Expression

Parameters:

target - the target of the expression

context - the expression evaluation context

Returns:

the evaluation result

Throws:

EvaluationException - an exception occured during evaluation

evaluateToSet

public void evaluateToSet(java.lang.Object target,
                          java.lang.Object value,
                          EvaluationContext context)
                   throws EvaluationException

Description copied from interface: SettableExpression

Evaluate this expression against the target object to set its value to the value provided.

Specified by:

evaluateToSet in interface SettableExpression

Parameters:

target - the target object

value - the new value to be set

context - the evaluation context

Throws:

EvaluationException - an exception occured during evaluation

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object