gr.uoa.di.madgik.searchlibrary.operatorlibrary.gmerge

Class GradualMergeWorker

java.lang.Object

java.lang.Thread

gr.uoa.di.madgik.searchlibrary.operatorlibrary.gmerge.GradualMergeWorker

All Implemented Interfaces:

Runnable

public class GradualMergeWorker
extends Thread

Operator class used to create a merged ResultSet output from the contents of multiple ResultSet, not all known at initialization time. The number of ResultSet to be merged may grow dynamically.

Author:

john.gerbesiotis - DI NKUA

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
GradualMergeWorker(Vector<ReaderHolder> readers, StatsContainer stats, long timeout, TimeUnit timeUnit, String uid, GradualLocatorReader inputRetriever, Object synchDispatcher, Object synchMergingStart) Creates a new GradualMergeWorker

Method Summary

Modifier and Type	Method and Description
URI	getWriterLocator()
void	run()

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

GradualMergeWorker

public GradualMergeWorker(Vector<ReaderHolder> readers,
                          StatsContainer stats,
                          long timeout,
                          TimeUnit timeUnit,
                          String uid,
                          GradualLocatorReader inputRetriever,
                          Object synchDispatcher,
                          Object synchMergingStart)

Creates a new GradualMergeWorker

Parameters:

readers - Vector holding info on the input ResultSet

stats - Statistics

timeout - The timeout that will be used by the RecordWriter and all ForwardReaders

timeUnit - The timeout unit that will be used by the RecordWriter and all ForwardReaders

uid - A unique identifier for this operation

inputRetriever - The retriever of the input locators

synchDispatcher - synchronization object

synchMergingStart -

Method Detail

run

public void run()

Specified by:

run in interface Runnable

Overrides:

run in class Thread

getWriterLocator

public URI getWriterLocator()

Returns:

the writer