Package com.tangosol.util.comparator

Class InverseComparator<T>

java.lang.Object

com.tangosol.util.Base

com.tangosol.util.comparator.SafeComparator<T>

com.tangosol.util.comparator.InverseComparator<T>

All Implemented Interfaces:

ExternalizableLite, PortableObject, EntryAwareComparator<T>, QueryMapComparator<T>, Remote.Comparator<T>, Serializable, Comparator<T>

public class InverseComparator<T>
extends SafeComparator<T>
implements QueryMapComparator<T>

Comparator that reverses the result of another comparator.

Author:

cp/gg 2002.11.01

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.tangosol.util.Base

Base.LoggingWriter

Field Summary

Fields inherited from class com.tangosol.util.comparator.SafeComparator

INSTANCE, m_comparator, m_fNullFirst

Fields inherited from class com.tangosol.util.Base

LOG_ALWAYS, LOG_CONFIG, LOG_DEBUG, LOG_ERR, LOG_INFO, LOG_MAX, LOG_MIN, LOG_QUIET, LOG_WARN, POWER_0, POWER_G, POWER_K, POWER_M, POWER_T, UNIT_D, UNIT_H, UNIT_M, UNIT_MS, UNIT_NS, UNIT_S, UNIT_US

Constructor Summary

Constructors

Constructor	Description
InverseComparator()	Default constructor (for ExternalizableLite and PortableObject).
InverseComparator(Comparator<? super T> comparator)	Construct an InverseComparator.

Method Summary

Modifier and Type	Method	Description
int	compare(T o1, T o2)	Use the wrapped Comparator to compare the two arguments for order and negate the result.
int	compareEntries(QueryMap.Entry entry1, QueryMap.Entry entry2)	Compare two entries using the underlying comparator and negate the result.
boolean	equals(Object o)	Compare the InverseComparator with another object to determine equality.

Methods inherited from class com.tangosol.util.comparator.SafeComparator

compareSafe, compareSafe, ensureSafe, getComparator, hashCode, INSTANCE, isKeyComparator, isKeyComparator, isNullFirst, readExternal, readExternal, toString, writeExternal, writeExternal

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

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Comparator

thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Methods inherited from interface com.tangosol.util.function.Remote.Comparator

reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Details

InverseComparator

public InverseComparator()

Default constructor (for ExternalizableLite and PortableObject).

InverseComparator

public InverseComparator(Comparator<? super T> comparator)

Construct an InverseComparator.

Parameters:

comparator - the comparator whose results are inverted by this Comparator

Method Details

compare

public int compare(T o1,
 T o2)

Use the wrapped Comparator to compare the two arguments for order and negate the result.

Specified by:

compare in interface Comparator<T>

Overrides:

compare in class SafeComparator<T>

Parameters:

o1 - the first object to be compared

o2 - the second object to be compared

Returns:

a positive integer, zero, or a negative integer as the first argument is less than, equal to, or greater than the second

compareEntries

public int compareEntries(QueryMap.Entry entry1,
 QueryMap.Entry entry2)

Compare two entries using the underlying comparator and negate the result.

Specified by:

compareEntries in interface QueryMapComparator<T>

Overrides:

compareEntries in class SafeComparator<T>

Parameters:

entry1 - the first entry to compare values from; read-only

entry2 - the second entry to compare values from; read-only

Returns:

a negative integer, zero, or a positive integer as the first entry denotes a value that is is less than, equal to, or greater than the value denoted by the second entry

equals

public boolean equals(Object o)

Compare the InverseComparator with another object to determine equality.

Specified by:

equals in interface Comparator<T>

Overrides:

equals in class SafeComparator<T>

Parameters:

o - the other comparator

Returns:

true iff this InverseComparator and the passed object are equivalent InverseComparator