public class ComparisonValueExtractor<T,E extends Number> extends AbstractCompositeExtractor<T,E>
Comparable.compareTo(T) or Comparator.compare(T, T) methods. However,
in more specific cases, when the compared values are of common numeric type,
the ComparisonValueExtractor will return a numeric difference between those
values. The Java type of the comparing values will dictate the Java type of
the result.
For example, lets assume that a cache contains business objects that have two properties: SellPrice and BuyPrice (both double). Then, to query for all objects that have SellPrice less than BuyPrice we would use the following:
ValueExtractor extractDiff = new ComparisonValueExtractor(
new ReflectionExtractor("getSellPrice"),
new ReflectionExtractor("getBuyPrice"));
Filter filter = new LessFilter(extractDiff, new Double(0.0));
Set entries = cache.entrySet(filter);
ExternalizableHelper.DecoratedMultiBufferReadBuffer, ExternalizableHelper.DefaultObjectStreamFactory, ExternalizableHelper.FormatAwareCompressor, ExternalizableHelper.IntDecoratedObject, ExternalizableHelper.Shielded, ExternalizableHelper.ShieldedDataOutputStream, ExternalizableHelper.ShieldedInputStream, ExternalizableHelper.ShieldedObjectOutputStream, ExternalizableHelper.ShieldedOutputStream, ExternalizableHelper.SimpleXmlBeanClassCache, ExternalizableHelper.Stats, ExternalizableHelper.XmlBeanClassCacheBase.LoggingWriter, Base.StackFrame| Modifier and Type | Field and Description |
|---|---|
protected Comparator |
m_comparator
An underlying Comparator object (optional).
|
m_aExtractorKEY, m_nTarget, m_sNameCanon, VALUECHUNK_SIZE, CHUNK_THRESHOLD, CONVERTER_FROM_BINARY, CONVERTER_STRIP_INTDECO, CONVERTER_TO_BINARY, DECO_APP_1, DECO_APP_2, DECO_APP_3, 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_RSVD_2, 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, MAX_DECO_HEADER_BYTES, PROPERTY_CONFIG, s_streamfactory, s_tloInEHDeserialize, TRINT_DOMAIN_SPAN, TRINT_MAX_VALUE, TRINT_MAX_VARIANCE, USE_POF_STREAMS, USE_XMLBEAN_CLASS_CACHE, XMLBEAN_CLASS_CACHE| Constructor and Description |
|---|
ComparisonValueExtractor()
Default constructor (necessary for the ExternalizableLite interface).
|
ComparisonValueExtractor(String sMethod1,
String sMethod2)
Construct a ComparisonValueExtractor based on two method names.
|
ComparisonValueExtractor(String sMethod1,
String sMethod2,
Comparator<? super E> comp)
Construct a ComparisonValueExtractor based on two method names and a
Comparator object.
|
ComparisonValueExtractor(ValueExtractor<T,E> ve1,
ValueExtractor<T,E> ve2)
Construct a ComparisonValueExtractor based on two specified extractors.
|
ComparisonValueExtractor(ValueExtractor<T,E> ve1,
ValueExtractor<T,E> ve2,
Comparator<? super E> comp)
Construct a ComparisonValueExtractor based on two specified extractors and
a Comparator object.
|
| Modifier and Type | Method and Description |
|---|---|
E |
extract(Object oTarget)
Extract the value from the passed object.
|
Comparator |
getComparator()
Return a Comparator used by this extractor.
|
void |
readExternal(DataInput in)
Restore the contents of this object by loading the object's state from
the passed DataInput object.
|
void |
readExternal(PofReader in)
Restore the contents of a user type instance by reading its state using
the specified PofReader object.
|
void |
writeExternal(DataOutput out)
Save the contents of this object by storing the object's state into
the passed DataOutput object.
|
void |
writeExternal(PofWriter out)
Save the contents of a POF user type instance by writing its state using
the specified PofWriter object.
|
equals, getExtractors, hashCode, toStringcompare, compareEntries, extractFromEntry, extractOriginalFromEntry, getCanonicalName, getTarget, isCanonicallyEquatableasBinary, 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, isPatchCompatible, isPatchCompatible, isResolving, isSerializable, isSerializerCompatible, isVersionCompatible, isVersionCompatible, 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, writeXmlSerializablecountBits, countBits, countBits, indexOfLSB, indexOfLSB, indexOfLSB, indexOfMSB, indexOfMSB, indexOfMSB, rotateLeft, rotateLeft, rotateLeft, rotateRight, rotateRight, rotateRight, toBitString, toBitString, toBitString, toBytes, toBytes, toBytes, toBytes, toInt, toInt, toLongazzert, 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, waitclone, finalize, getClass, notify, notifyAll, wait, wait, waitandThen, apply, applyAsDouble, applyAsInt, applyAsLong, compose, fromKey, identity, identityCast, ofandThen, composecomparing, comparing, comparingDouble, comparingInt, comparingLong, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLongprotected Comparator m_comparator
public ComparisonValueExtractor()
public ComparisonValueExtractor(String sMethod1, String sMethod2)
Comparable.sMethod1 - the name of the first method to invoke via reflectionsMethod2 - the name of the second method to invoke via reflectionpublic ComparisonValueExtractor(String sMethod1, String sMethod2, Comparator<? super E> comp)
sMethod1 - the name of the first method to invoke via reflectionsMethod2 - the name of the second method to invoke via reflectioncomp - the comparator used to compare the extracted values (optional)public ComparisonValueExtractor(ValueExtractor<T,E> ve1, ValueExtractor<T,E> ve2)
Comparable.ve1 - the ValueExtractor for the first valueve2 - the ValueExtractor for the second valuepublic ComparisonValueExtractor(ValueExtractor<T,E> ve1, ValueExtractor<T,E> ve2, Comparator<? super E> comp)
ve1 - the ValueExtractor for the first valueve2 - the ValueExtractor for the second valuecomp - the comparator used to compare the extracted values (optional)public Comparator getComparator()
public E extract(Object oTarget)
extract in interface ValueExtractor<T,E extends Number>extract in class AbstractExtractor<T,E extends Number>oTarget - the object to extract the value frompublic void readExternal(DataInput in) throws IOException
readExternal in interface ExternalizableLitereadExternal in class AbstractCompositeExtractor<T,E extends Number>in - the DataInput stream to read data from in order to restore
the state of this objectIOException - if an I/O exception occursNotActiveException - if the object is not in its initial
state, and therefore cannot be deserialized intopublic void writeExternal(DataOutput out) throws IOException
writeExternal in interface ExternalizableLitewriteExternal in class AbstractCompositeExtractor<T,E extends Number>out - the DataOutput stream to write the state of this object toIOException - if an I/O exception occurspublic void readExternal(PofReader in) throws IOException
readExternal in interface PortableObjectreadExternal in class AbstractCompositeExtractor<T,E extends Number>in - the PofReader from which to read the object's stateIOException - if an I/O error occurspublic void writeExternal(PofWriter out) throws IOException
writeExternal in interface PortableObjectwriteExternal in class AbstractCompositeExtractor<T,E extends Number>out - the PofWriter to which to write the object's stateIOException - if an I/O error occurs