com.tangosol.util.filter
Class IsNullFilter

java.lang.Object
  com.tangosol.util.Base
      com.tangosol.util.BitHelper
          com.tangosol.util.ExternalizableHelper
              com.tangosol.util.filter.ExtractorFilter
                  com.tangosol.util.filter.ComparisonFilter
                      com.tangosol.util.filter.EqualsFilter
                          com.tangosol.util.filter.IsNullFilter

All Implemented Interfaces:

ExternalizableLite, PortableObject, Filter, EntryFilter, IndexAwareFilter, Serializable

public class IsNullFilter
extends EqualsFilter

Filter which compares the result of a method invocation with null.

Author:

cp/gg 2002.10.27

Field Summary

Fields inherited from class com.tangosol.util.filter.ComparisonFilter

m_oValue

Fields inherited from class com.tangosol.util.filter.ExtractorFilter

EVAL_COST, m_extractor

Constructor Summary

IsNullFilter()
Default constructor (necessary for the ExternalizableLite interface).

IsNullFilter(String sMethod)
Construct a IsNullFilter for testing equality to null.

Method Summary

Methods inherited from class com.tangosol.util.filter.EqualsFilter

applyIndex, calculateEffectiveness, evaluateExtracted

Methods inherited from class com.tangosol.util.filter.ComparisonFilter

equals, getValue, hashCode, readExternal, readExternal, toString, writeExternal, writeExternal

Methods inherited from class com.tangosol.util.filter.ExtractorFilter

evaluate, evaluateEntry, extract, getValueExtractor

Methods inherited from class com.tangosol.util.BitHelper

countBits, countBits, countBits, indexOfLSB, indexOfLSB, indexOfLSB, indexOfMSB, indexOfMSB, indexOfMSB, toBitString, toBitString, toBitString

Methods inherited from interface com.tangosol.util.filter.EntryFilter

evaluateEntry

Methods inherited from interface com.tangosol.util.Filter

evaluate

Constructor Detail

IsNullFilter

public IsNullFilter()

Default constructor (necessary for the ExternalizableLite interface).

IsNullFilter

public IsNullFilter(String sMethod)

Construct a IsNullFilter for testing equality to null.

Parameters:

sMethod - the name of the method to invoke via reflection