com.oracle.coherence.patterns.command.internal
Class ClaimContextProcessor

java.lang.Object
  com.tangosol.util.Base
      com.tangosol.util.processor.AbstractProcessor
          com.oracle.coherence.patterns.command.internal.ClaimContextProcessor

All Implemented Interfaces:

com.tangosol.io.ExternalizableLite, com.tangosol.io.pof.PortableObject, com.tangosol.util.InvocableMap.EntryProcessor, Serializable

public class ClaimContextProcessor
extends com.tangosol.util.processor.AbstractProcessor
implements com.tangosol.io.ExternalizableLite, com.tangosol.io.pof.PortableObject

The ClaimContextProcessor is responsible for "claiming" a Context for execution with a CommandExecutor.

This enables us to determine during CommandExecutionRequest execute if another thread, possibly on another Member, has also claimed the said ContextWrapper. In turn this allows us to fail-fast, and stop processing on the original CommandExecutor thread to avoid where possible, multiple execution of a Command.

Copyright (c) 2008. All Rights Reserved. Oracle Corporation.
Oracle is a registered trademark of Oracle Corporation and/or its affiliates.

Author:

Brian Oliver

See Also:

Serialized Form

Nested Class Summary

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

com.tangosol.util.Base.CommonMonitor, com.tangosol.util.Base.LoggingWriter, com.tangosol.util.Base.StackFrame

Field Summary

Fields inherited from class com.tangosol.util.Base

LOG_ALWAYS, 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

ClaimContextProcessor()
Required for ExternalizableLite and PortableObject

ClaimContextProcessor(com.tangosol.util.UID memberUID)
Standard Constructor.

Method Summary

Object	process(com.tangosol.util.InvocableMap.Entry entry)
void	readExternal(DataInput in)
void	readExternal(com.tangosol.io.pof.PofReader reader)
void	writeExternal(DataOutput out)
void	writeExternal(com.tangosol.io.pof.PofWriter writer)

Methods inherited from class com.tangosol.util.processor.AbstractProcessor

processAll

Methods inherited from class com.tangosol.util.Base

azzert, azzert, azzert, azzertFailed, breakLines, breakLines, capitalize, checkNotNull, checkRange, computeSafeWaitTime, decimalValue, dup, dup, 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, getRandom, 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, octalValue, out, out, out, out, out, pad, parseBandwidth, parseBandwidth, parseDelimitedString, parseHex, parseHex, parseMemorySize, parseMemorySize, parseTime, parseTime, parseTimeNanos, parseTimeNanos, printStackTrace, randomize, randomize, randomize, read, read, read, read, read, read, read, redirectAll, 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, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ClaimContextProcessor

public ClaimContextProcessor()

Required for ExternalizableLite and PortableObject

ClaimContextProcessor

public ClaimContextProcessor(com.tangosol.util.UID memberUID)

Standard Constructor.

Parameters:

memberUID - The UID of the Member on which we should be claiming the Context.

Method Detail

process

public Object process(com.tangosol.util.InvocableMap.Entry entry)

Specified by:

process in interface com.tangosol.util.InvocableMap.EntryProcessor

readExternal

public void readExternal(DataInput in)
                  throws IOException

Specified by:

readExternal in interface com.tangosol.io.ExternalizableLite

Throws:

IOException

writeExternal

public void writeExternal(DataOutput out)
                   throws IOException

Specified by:

writeExternal in interface com.tangosol.io.ExternalizableLite

Throws:

IOException

readExternal

public void readExternal(com.tangosol.io.pof.PofReader reader)
                  throws IOException

Specified by:

readExternal in interface com.tangosol.io.pof.PortableObject

Throws:

IOException

writeExternal

public void writeExternal(com.tangosol.io.pof.PofWriter writer)
                   throws IOException

Specified by:

writeExternal in interface com.tangosol.io.pof.PortableObject

Throws:

IOException