public class ExtractorProcessor<K,V,T,E> extends AbstractProcessor<K,V,E> implements ExternalizableLite, PortableObject
cache.invoke(oKey, new ExtractorProcessor(extractor));which is functionally equivalent to the following operation:
extractor.extract(cache.get(oKey));The major difference is that for clustered caches using the ExtractorProcessor could significantly reduce the amount of network traffic.
An alternative (and superior) approach would be to use the
ReducerAggregator
Base.LoggingWriter, Base.StackFrame| Modifier and Type | Field and Description |
|---|---|
protected ValueExtractor<? super T,? extends E> |
m_extractor
The underlying value extractor.
|
| Constructor and Description |
|---|
ExtractorProcessor()
Default constructor (necessary for the ExternalizableLite interface).
|
ExtractorProcessor(String sMethod)
Construct an ExtractorProcessor for a given method name.
|
ExtractorProcessor(ValueExtractor<? super T,? extends E> extractor)
Construct an ExtractorProcessor based on the specified ValueExtractor.
|
| Modifier and Type | Method and Description |
|---|---|
boolean |
equals(Object o)
Compare the ExtractorProcessor with another object to determine
equality.
|
int |
hashCode()
Determine a hash value for the ExtractorProcessor object according to
the general
Object.hashCode() contract. |
E |
process(InvocableMap.Entry<K,V> entry)
Process a Map.Entry object.
|
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.
|
String |
toString()
Return a human-readable description for this ExtractorProcessor.
|
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.
|
processAllazzert, 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, getThreadFactory, getTimeZone, getUpTimeMillis, hashCode, hexValue, indentString, indentString, isDecimal, isHex, isLogEcho, isOctal, log, log, log, log, log, makeInteger, makeLong, makeThread, 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, waitprotected ValueExtractor<? super T,? extends E> m_extractor
public ExtractorProcessor()
public ExtractorProcessor(ValueExtractor<? super T,? extends E> extractor)
extractor - a ValueExtractor object; passing null is equivalent
to using the IdentityExtractorpublic ExtractorProcessor(String sMethod)
sMethod - a method name to make a ReflectionExtractor
for; this parameter can also be a dot-delimited
sequence of method names which would result in an
ExtractorProcessor based on the ChainedExtractor that is based on an array of
corresponding ReflectionExtractor objectspublic E process(InvocableMap.Entry<K,V> entry)
Note: if this method throws an exception, all modifications to the supplied
entry or any other entries retrieved via the BackingMapContext.getBackingMapEntry(java.lang.Object)
API will be rolled back leaving all underlying values unchanged.
process in interface InvocableMap.EntryProcessor<K,V,E>entry - the Entry to processpublic boolean equals(Object o)
public int hashCode()
Object.hashCode() contract.public String toString()
public void readExternal(DataInput in) throws IOException
readExternal in interface ExternalizableLitein - 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 ExternalizableLiteout - 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 PortableObjectin - 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 PortableObjectout - the PofWriter to which to write the object's stateIOException - if an I/O error occurs