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

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

All Implemented Interfaces:

Expression

public class IsEmptyExpression

extends InMemoryExpression

Expression to test for an empty Collection.

Constructor Summary

IsEmptyExpression(com.solarmetric.rd.kodo.query.exp.InMemoryValue val)
Constructor.

Method Summary

protected boolean

eval(java.lang.Object candidate, java.lang.Object orig, com.solarmetric.rd.kodo.runtime.PersistenceManagerImpl pm, java.util.Map params) Evaluate the expression for the given context candidate and original candidate.

Methods inherited from class com.solarmetric.rd.kodo.query.exp.InMemoryExpression

evaluate, order

Methods inherited from class java.lang.Object

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

Constructor Detail

IsEmptyExpression

public IsEmptyExpression(com.solarmetric.rd.kodo.query.exp.InMemoryValue val)

Constructor. Provide collection/map value to test.

Method Detail

eval

protected boolean eval(java.lang.Object candidate,
                       java.lang.Object orig,
                       com.solarmetric.rd.kodo.runtime.PersistenceManagerImpl pm,
                       java.util.Map params)

Description copied from class: InMemoryExpression

Evaluate the expression for the given context candidate and original candidate.

Overrides:

eval in class InMemoryExpression