OrOperator (jbpm-3.1.3) - JBoss JBPM 3.1.3 API 英文版文档

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org.jbpm.jpdl.el.impl
Class OrOperator

java.lang.Object
  org.jbpm.jpdl.el.impl.BinaryOperator
      org.jbpm.jpdl.el.impl.OrOperator

public class OrOperator
extends BinaryOperator
extends BinaryOperator

The implementation of the or operator

Version:: $Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: tombaeyens $
Author:: Nathan Abramson - Art Technology Group

Field Summary

static OrOperator SINGLETON


Constructor Summary

OrOperator()
          Constructor

Method Summary

java.lang.Object apply(java.lang.Object pLeft, java.lang.Object pRight, Logger pLogger)
          Applies the operator to the given value

java.lang.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(java.lang.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 Summary
`static OrOperator`	`SINGLETON`

Constructor Summary
`OrOperator()` Constructor

Method Summary
`java.lang.Object`	`apply(java.lang.Object pLeft, java.lang.Object pRight, Logger pLogger)` Applies the operator to the given value
`java.lang.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(java.lang.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 OrOperator SINGLETON

Constructor Detail

OrOperator

public OrOperator()

Constructor

Method Detail

getOperatorSymbol

public java.lang.String getOperatorSymbol()

Returns the symbol representing the operator

Specified by:: getOperatorSymbol in class BinaryOperator

apply

public java.lang.Object apply(java.lang.Object pLeft,
                              java.lang.Object pRight,
                              Logger pLogger)
                       throws ELException

Applies the operator to the given value

Specified by:: apply in class BinaryOperator

Throws:: ELException

shouldEvaluate

public boolean shouldEvaluate(java.lang.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