Class LessEqualsFilter<T,E extends Comparable<? super E>>
- java.lang.Object
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- com.tangosol.util.Base
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- com.tangosol.util.BitHelper
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- com.tangosol.util.ExternalizableHelper
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- com.tangosol.util.filter.AbstractQueryRecorderFilter<T>
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- com.tangosol.util.filter.ExtractorFilter<T,E>
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- com.tangosol.util.filter.ComparisonFilter<T,E,E>
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- com.tangosol.util.filter.LessEqualsFilter<T,E>
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- Type Parameters:
T
- the type of the input argument to the filterE
- the type of value to use for comparison
- All Implemented Interfaces:
ExternalizableLite
,PortableObject
,Filter<T>
,EntryFilter<Object,T>
,IndexAwareFilter<Object,T>
,QueryRecorderFilter<T>
,Serializable
public class LessEqualsFilter<T,E extends Comparable<? super E>> extends ComparisonFilter<T,E,E> implements IndexAwareFilter<Object,T>
Filter which compares the result of a method invocation with a value for "Less or Equals" condition. In a case when either result of a method invocation or a value to compare are equal to null, the evaluate test yields false. This approach is equivalent to the way the NULL values are handled by SQL.- Author:
- cp/gg 2002.10.29
- See Also:
- Serialized Form
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Nested Class Summary
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Nested classes/interfaces inherited from class com.tangosol.util.ExternalizableHelper
ExternalizableHelper.DecoratedMultiBufferReadBuffer, ExternalizableHelper.DefaultObjectStreamFactory, ExternalizableHelper.FormatAwareCompressor, ExternalizableHelper.IntDecoratedObject, ExternalizableHelper.Shielded, ExternalizableHelper.ShieldedDataOutputStream, ExternalizableHelper.ShieldedInputStream, ExternalizableHelper.ShieldedObjectOutputStream, ExternalizableHelper.ShieldedOutputStream, ExternalizableHelper.SimpleXmlBeanClassCache, ExternalizableHelper.Stats, ExternalizableHelper.XmlBeanClassCache
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Nested classes/interfaces inherited from class com.tangosol.util.Base
Base.LoggingWriter
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Field Summary
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Fields inherited from class com.tangosol.util.filter.ComparisonFilter
m_value
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Fields inherited from class com.tangosol.util.filter.ExtractorFilter
EVAL_COST, m_extractor
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Fields inherited from class com.tangosol.util.ExternalizableHelper
BINARY_SIZE, CHUNK_SIZE, CHUNK_THRESHOLD, CONVERTER_FROM_BINARY, CONVERTER_STRIP_INTDECO, CONVERTER_TO_BINARY, DECO_APP_1, DECO_APP_2, DECO_APP_3, DECO_BACKUP, DECO_CUSTOM, DECO_EXPIRY, DECO_ID_MAX, DECO_ID_MIN, DECO_JCACHE, DECO_JCACHE_SYNTHETIC, DECO_MEMCACHED, DECO_PUSHREP, DECO_QUEUE_METADATA, DECO_RSVD_1, DECO_STORE, DECO_TX, DECO_VALUE, DECO_WLS, EMPTY_BINARY_ARRAY, FMT_B_ARRAY, FMT_BIN_DECO, FMT_BIN_EXT_DECO, FMT_BINARY, FMT_BOOLEAN, FMT_BYTE, FMT_DECIMAL, FMT_DOUBLE, FMT_EXT, FMT_FLOAT, FMT_IDO, FMT_INT, FMT_INTEGER, FMT_LONG, FMT_NONE, FMT_NULL, FMT_OBJ_EXT, FMT_OBJ_SER, FMT_OPT, FMT_OPT_DOUBLE, FMT_OPT_INT, FMT_OPT_LONG, FMT_SHORT, FMT_STRING, FMT_UNKNOWN, FMT_XML_BEAN, FMT_XML_SER, FORCE_RESOLVING_STREAMS, LAMBDA_SERIALIZATION, MAX_DECO_HEADER_BYTES, PACKED_INT_SIZE, PACKED_LONG_SIZE, PROPERTY_CONFIG, s_streamfactory, TRINT_DOMAIN_SPAN, TRINT_MAX_VALUE, TRINT_MAX_VARIANCE, USE_POF_STREAMS, USE_XMLBEAN_CLASS_CACHE, XMLBEAN_CLASS_CACHE
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Constructor Summary
Constructors Constructor Description LessEqualsFilter()
Default constructor (necessary for the ExternalizableLite interface).LessEqualsFilter(ValueExtractor<? super T,? extends E> extractor, E value)
Construct a LessEqualsFilter for testing "Less or Equals" condition.LessEqualsFilter(String sMethod, E value)
Construct a LessEqualsFilter for testing "Less or Equals" condition.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Filter
applyIndex(Map mapIndexes, Set setKeys)
Filter remaining keys using a Map of available indexes.int
calculateEffectiveness(Map mapIndexes, Set setKeys)
Given a Map of available indexes, determine if this IndexAwareFilter can use any of the indexes to assist in its processing, and if so, determine how effective the use of that index would be.protected boolean
evaluateExtracted(E extracted)
Evaluate the specified extracted value.-
Methods inherited from class com.tangosol.util.filter.ComparisonFilter
calculateMatchEffectiveness, calculateRangeEffectiveness, equals, getValue, hashCode, readExternal, readExternal, toString, toStringValue, writeExternal, writeExternal
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Methods inherited from class com.tangosol.util.filter.ExtractorFilter
calculateIteratorEffectiveness, ensureSafeSet, evaluate, evaluateEntry, extract, getValueExtractor
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Methods inherited from class com.tangosol.util.filter.AbstractQueryRecorderFilter
explain, explain, explain, trace, trace, trace, trace, trace
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Methods inherited from class com.tangosol.util.ExternalizableHelper
asBinary, calculatePackedLength, calculatePackedLength, checkObjectInputFilter, checkObjectInputFilter, checkObjectInputFilter, convertUTF, decodeExpiry, decorate, decorate, decorate, decorate, decorate, decorateBinary, encodeExpiry, ensureSerializer, extractIntDecoration, fromBinary, fromBinary, fromBinary, fromBinary, fromBinary, fromBinary, fromByteArray, fromByteArray, getClass, getConfigSerialFilter, getConfigSerialFilterFactory, getDecoration, getDecoration, getDecorations, getDeltaCompressor, getInputStream, getNewObjectInput, getObjectInput, getObjectInputFilter, getObjectOutput, getObjectStreamFactory, getOutputStream, getShieldedOutputStream, getStreamFormat, getUndecorated, getUndecorated, isDecorated, isDecorated, isIntDecorated, isIntDecorated, isResolving, isSerializable, isSerializerCompatible, isVersionCompatible, isVersionCompatible, isVersionCompatible, isVersionCompatible, loadClass, loadResource, main, makeTrint, readBigDecimal, readBigInteger, readBooleanArray, readBooleanArray, readByteArray, readCharArray, readCharArray, readCollection, readDate, readDoubleArray, readDoubleArray, readExternalizableLite, readExternalizableLite, readFloatArray, readFloatArray, readInt, readInt, readIntArray, readIntArray, readIntArray2d, readLargeBooleanArray, readLargeByteArray, readLargeCharArray, readLargeDoubleArray, readLargeFloatArray, readLargeIntArray, readLargeLongArray, readLargeObjectArray, readLargeStringArray, readLong, readLong, readLongArray, readLongArray, readMap, readMap, readObject, readObject, readObjectArray, readObjectArray, readSafeUTF, readSafeUTF, readSerializable, readSerializable, readStringArray, readStringArray, readTime, readTimestamp, readTrint, readUnsignedTrint, readUTF, readXmlBean, readXmlSerializable, readXmlSerializable, realize, removeIntDecoration, removeIntDecoration, replace, reportIncompatibleSerializers, setObjectStreamFactory, toBinary, toBinary, toBinary, toByteArray, toByteArray, toByteArray, toLiteBinary, toLong, undecorate, undecorate, validateBufferSize, validateLoadArray, validateLoadClass, writeBigDecimal, writeBigInteger, writeBooleanArray, writeByteArray, writeCollection, writeDate, writeDoubleArray, writeExternalizableLite, writeFloatArray, writeInt, writeInt, writeIntArray2d, writeLong, writeLong, writeMap, writeObject, writeSafeUTF, writeSafeUTF, writeSerializable, writeStringArray, writeTime, writeTimestamp, writeTrint, writeTrint, writeUTF, writeXmlBean, writeXmlSerializable
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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, toBytes, toBytes, toBytes, toBytes, toInt, toInt, toLong
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Methods inherited from class com.tangosol.util.Base
azzert, azzert, azzert, azzertFailed, breakLines, breakLines, capitalize, checkNotEmpty, checkNotNull, checkRange, computeSafeWaitTime, decimalValue, dup, dup, ensureBigDecimal, ensureClassLoader, ensureRuntimeException, ensureRuntimeException, equals, equalsDeep, err, err, err, err, err, escape, formatDateTime, getCallerStackFrame, getCommonMonitor, getCommonMonitor, getCommonMonitor, getContextClassLoader, getContextClassLoader, getDeepMessage, getErr, getLastSafeTimeMillis, getLog, getMaxDecDigits, getMaxHexDigits, getOriginalException, getOut, getProcessRandom, getRandom, getRandomBinary, getRandomBinary, getRandomString, getSafeTimeMillis, getStackFrame, getStackFrames, getStackTrace, getStackTrace, getStackTrace, getThreadFactory, getTimeZone, getUpTimeMillis, hashCode, hexValue, indentString, indentString, isDecimal, isHex, isLogEcho, isOctal, log, log, log, log, log, makeInteger, makeLong, makeThread, mergeArray, mergeBooleanArray, mergeByteArray, mergeCharArray, mergeDoubleArray, mergeFloatArray, mergeIntArray, mergeLongArray, mod, mod, octalValue, out, out, out, out, out, pad, parseBandwidth, parseBandwidth, parseDelimitedString, parseHex, parseHex, parseMemorySize, parseMemorySize, parsePercentage, parseTime, parseTime, parseTimeNanos, parseTimeNanos, printStackTrace, randomize, randomize, randomize, randomize, read, read, read, read, read, read, read, replace, setErr, setLog, setLogEcho, setOut, sleep, toBandwidthString, toBandwidthString, toCharEscape, toCrc, toCrc, toCrc, toCrc, toCrc, toDecString, toDelimitedString, toDelimitedString, toDelimitedString, toDelimitedString, toHex, toHex, toHexDump, toHexEscape, toHexEscape, toHexEscape, toHexEscape, toHexString, toMemorySizeString, toMemorySizeString, toQuotedCharEscape, toQuotedStringEscape, toSqlString, toString, toString, toStringEscape, toUnicodeEscape, trace, trace, trace, trace, trace, trace, trace, trace, trace, truncateString, truncateString, wait
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Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface com.tangosol.util.filter.EntryFilter
evaluateEntry
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Methods inherited from interface com.tangosol.util.Filter
and, asLimitFilter, associatedWith, evaluate, forKeys, forPartitions, or, xor
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Constructor Detail
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LessEqualsFilter
public LessEqualsFilter()
Default constructor (necessary for the ExternalizableLite interface).
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LessEqualsFilter
public LessEqualsFilter(ValueExtractor<? super T,? extends E> extractor, E value)
Construct a LessEqualsFilter for testing "Less or Equals" condition.- Parameters:
extractor
- the ValueExtractor to use by this filtervalue
- the object to compare the result with
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Method Detail
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evaluateExtracted
protected boolean evaluateExtracted(E extracted)
Evaluate the specified extracted value.- Specified by:
evaluateExtracted
in classExtractorFilter<T,E extends Comparable<? super E>>
- Parameters:
extracted
- an extracted value to evaluate- Returns:
- true iff the test passes
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calculateEffectiveness
public int calculateEffectiveness(Map mapIndexes, Set setKeys)
Given a Map of available indexes, determine if this IndexAwareFilter can use any of the indexes to assist in its processing, and if so, determine how effective the use of that index would be.The returned value is an effectiveness estimate of how well this filter can use the specified indexes to filter the specified keys. An operation that requires no more than a single access to the index content (i.e. Equals, NotEquals) has an effectiveness of one. Evaluation of a single entry is assumed to have an effectiveness that depends on the index implementation and is usually measured as a constant number of the single operations. This number is referred to as evaluation cost.
If the effectiveness of a filter evaluates to a number larger than the keySet.size() * <evaluation cost> then a user could avoid using the index and iterate through the keySet calling evaluate rather then applyIndex.
- Specified by:
calculateEffectiveness
in interfaceIndexAwareFilter<T,E extends Comparable<? super E>>
- Overrides:
calculateEffectiveness
in classExtractorFilter<T,E extends Comparable<? super E>>
- Parameters:
mapIndexes
- the availableMapIndex
objects keyed by the related ValueExtractor; read-onlysetKeys
- the set of keys that will be filtered; read-only- Returns:
- an effectiveness estimate of how well this filter can use the specified indexes to filter the specified keys
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applyIndex
public Filter applyIndex(Map mapIndexes, Set setKeys)
Filter remaining keys using a Map of available indexes.The filter is responsible for removing all keys from the passed set of keys that the applicable indexes can prove should be filtered. If the filter does not fully evaluate the remaining keys using just the index information, it must return a filter (which may be an
EntryFilter
) that can complete the task using an iterating implementation. If, on the other hand, the filter does fully evaluate the remaining keys using just the index information, then it should return null to indicate that no further filtering is necessary.- Specified by:
applyIndex
in interfaceIndexAwareFilter<T,E extends Comparable<? super E>>
- Overrides:
applyIndex
in classExtractorFilter<T,E extends Comparable<? super E>>
- Parameters:
mapIndexes
- the availableMapIndex
objects keyed by the related ValueExtractor; read-onlysetKeys
- the mutable set of keys that remain to be filtered- Returns:
- a
Filter
object (which may be anEntryFilter
) that can be used to process the remaining keys, or null if no additional filter processing is necessary
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