Package org.apache.taglibs.standard.lang.jstl

Class AndOperator

java.lang.Object

org.apache.taglibs.standard.lang.jstl.BinaryOperator

org.apache.taglibs.standard.lang.jstl.AndOperator

public class AndOperator
extends BinaryOperator

The implementation of the and operator

Version:

$Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: kchung $

Author:

Nathan Abramson - Art Technology Group

Field Summary

Fields

Modifier and Type	Field	Description
static AndOperator	SINGLETON

Constructor Summary

Constructors

Constructor	Description
AndOperator()	Constructor

Method Summary

Modifier and Type	Method	Description
Object	apply(Object pLeft, Object pRight, Object pContext, Logger pLogger)	Applies the operator to the given value
String	getOperatorSymbol()	Returns the symbol representing the operator
boolean	shouldCoerceToBoolean()	Returns true if the operator expects its arguments to be coerced to Booleans.
boolean	shouldEvaluate(Object pLeft)	Returns true if evaluation is necessary given the specified Left value.

Methods inherited from class java.lang.Object

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

Field Detail

SINGLETON

public static final AndOperator SINGLETON

Constructor Detail

AndOperator

public AndOperator()

Constructor

Method Detail

getOperatorSymbol

public String getOperatorSymbol()

Returns the symbol representing the operator

Specified by:

getOperatorSymbol in class BinaryOperator

apply

public Object apply(Object pLeft,
                    Object pRight,
                    Object pContext,
                    Logger pLogger)
             throws ELException

Applies the operator to the given value

Specified by:

apply in class BinaryOperator

Throws:

ELException

shouldEvaluate

public boolean shouldEvaluate(Object pLeft)

Returns true if evaluation is necessary given the specified Left value. The And/OrOperators make use of this

Overrides:

shouldEvaluate in class BinaryOperator

shouldCoerceToBoolean

public boolean shouldCoerceToBoolean()

Returns true if the operator expects its arguments to be coerced to Booleans. The And/Or operators set this to true.

Overrides:

shouldCoerceToBoolean in class BinaryOperator