com.solarmetric.rd.kodo.query.exp
Class Null

java.lang.Object
  |
  +--com.solarmetric.rd.kodo.query.exp.Null

All Implemented Interfaces:

InMemoryValue, Value

public class Null

extends java.lang.Object

implements InMemoryValue

Represents the null constant.

Constructor Summary

Null()

Method Summary

void	castTo(java.lang.Class cls) Cast this value to the given type.
java.lang.Object	evaluate(java.lang.Object candidate, java.lang.Object orig, com.solarmetric.rd.kodo.runtime.PersistenceManagerImpl pm, java.util.Map params) Evaluate the given candidate.
boolean	isVariable() Return true if this value is a variable.

Methods inherited from class java.lang.Object

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

Constructor Detail

Null

public Null()

Method Detail

castTo

public void castTo(java.lang.Class cls)

Description copied from interface: InMemoryValue

Cast this value to the given type.

Specified by:

castTo in interface InMemoryValue

isVariable

public boolean isVariable()

Description copied from interface: Value

Return true if this value is a variable.

Specified by:

isVariable in interface Value

evaluate

public java.lang.Object evaluate(java.lang.Object candidate,
                                 java.lang.Object orig,
                                 com.solarmetric.rd.kodo.runtime.PersistenceManagerImpl pm,
                                 java.util.Map params)

Description copied from interface: InMemoryValue

Evaluate the given candidate.

Specified by:

evaluate in interface InMemoryValue