info.ephyra.search.searchers
Class Searcher

java.lang.Object
  java.lang.Thread
      info.ephyra.search.searchers.Searcher

All Implemented Interfaces:

java.lang.Runnable

Direct Known Subclasses:

KnowledgeAnnotator, KnowledgeMiner

public abstract class Searcher
extends java.lang.Thread

A Searcher queries an unstructured or (semi)structured knowledge source and passes the results to the static class Search.

It runs as a separate thread, so several queries can be performed in parallel.

This class extends the class Thread and is abstract.

Version:

2005-11-01

Author:

Nico Schlaefer

Nested Class Summary

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

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

protected Query	query Query that is performed.
protected Result[]	results The results found in the knowledge source.

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Searcher()

Method Summary

protected abstract Result[]	doSearch() Searches an unstructured or (semi)structured knowledge source and returns an array of search results.
void	run() Performs the search and passes the results to the static class Search.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, 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

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

Field Detail

query

protected Query query

Query that is performed.

results

protected Result[] results

The results found in the knowledge source.

Constructor Detail

Searcher

public Searcher()

Method Detail

doSearch

protected abstract Result[] doSearch()

Searches an unstructured or (semi)structured knowledge source and returns an array of search results.

Returns:

search results or an empty array, if the search failed

run

public void run()

Performs the search and passes the results to the static class Search.

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread