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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.AbstractQueryRecorderFilter
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, QueryRecorderFilter, java.io.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(java.lang.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

calculateIteratorEffectiveness, calculateMatchEffectiveness, calculateRangeEffectiveness, 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.filter.AbstractQueryRecorderFilter

explain, explain, trace, trace, trace, trace

Methods inherited from class com.tangosol.util.BitHelper

countBits, countBits, countBits, indexOfLSB, indexOfLSB, indexOfLSB, indexOfMSB, indexOfMSB, indexOfMSB, rotateLeft, rotateLeft, rotateLeft, rotateRight, rotateRight, rotateRight, 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(java.lang.String sMethod)

Construct a IsNullFilter for testing equality to null.

Parameters:

sMethod - the name of the method to invoke via reflection

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