org.ujac.util.exi.type
Class CollectionType.ContainsOperation

java.lang.Object
  extended by org.ujac.util.exi.BaseExpressionOperation
      extended by org.ujac.util.exi.type.CollectionType.ContainsOperation
All Implemented Interfaces:
ExpressionOperation
Enclosing class:
CollectionType

public class CollectionType.ContainsOperation
extends BaseExpressionOperation

The 'contains' operation for Collections.


Constructor Summary
CollectionType.ContainsOperation()
           
 
Method Summary
 Object evaluate(ExpressionTuple expr, ExpressionContext ctx)
          Evaluates the given values.
 String getDescription()
          Gets a description for the operation.
 
Methods inherited from class org.ujac.util.exi.BaseExpressionOperation
getExamples
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

CollectionType.ContainsOperation

public CollectionType.ContainsOperation()
Method Detail

evaluate

public Object evaluate(ExpressionTuple expr,
                       ExpressionContext ctx)
                throws ExpressionException
Evaluates the given values.

Parameters:
expr - The expression tuple to process.
ctx - The expression context.
Returns:
The result of the tuple evaluation.
Throws:
ExpressionException - If the evaluation failed.

getDescription

public String getDescription()
Gets a description for the operation.

Specified by:
getDescription in interface ExpressionOperation
Overrides:
getDescription in class BaseExpressionOperation
Returns:
The item's description.


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