com.singularsys.jep.misc.nullwrapper.functions
Class NullSafeEquals

java.lang.Object
  com.singularsys.jep.functions.PostfixMathCommand
      com.singularsys.jep.functions.BinaryFunction
          com.singularsys.jep.functions.Comparative
              com.singularsys.jep.misc.nullwrapper.functions.NullSafeEquals

All Implemented Interfaces:

PostfixMathCommandI, java.io.Serializable

public class NullSafeEquals
extends Comparative

The Null Safe equals function. null <=> null is true; null <=> non-null is false; not-null <=> null is false; other value as Comparative

Since:

3.4

Author:

Richard Morris

See Also:

Serialized Form

Field Summary

Fields inherited from class com.singularsys.jep.functions.Comparative

EQ, GE, GT, id, LE, LT, NE

Fields inherited from class com.singularsys.jep.functions.PostfixMathCommand

curNumberOfParameters, name, NaN, numberOfParameters

Constructor Summary

NullSafeEquals()

Method Summary

java.lang.Object

eval(java.lang.Object l, java.lang.Object r)

Methods inherited from class com.singularsys.jep.functions.Comparative

compare, eq, ge, getTolerance, gt, le, lt, ne, setTolerance

Methods inherited from class com.singularsys.jep.functions.BinaryFunction

run

Methods inherited from class com.singularsys.jep.functions.PostfixMathCommand

asArray, asBool, asDouble, asInt, asLong, asStrictInt, asString, checkNumberOfParameters, checkStack, getName, getNumberOfParameters, setCurNumberOfParameters, setName, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

NullSafeEquals

public NullSafeEquals()

Method Detail

eval

public java.lang.Object eval(java.lang.Object l,
                             java.lang.Object r)
                      throws EvaluationException

Overrides:

eval in class Comparative

Throws:

EvaluationException