org.apache.nutch.searcher
Class DistributedSearch.Client

java.lang.Object
  java.lang.Thread
      org.apache.nutch.searcher.DistributedSearch.Client

All Implemented Interfaces:

HitContent, HitDetailer, HitSummarizer, Runnable, Searcher

Enclosing class:

DistributedSearch

public static class DistributedSearch.Client

extends Thread

implements Searcher, HitDetailer, HitSummarizer, HitContent, Runnable

The search client.

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

DistributedSearch.Client(File file)
Construct a client talking to servers listed in the named file.

DistributedSearch.Client(InetSocketAddress[] addresses)
Construct a client talking to the named servers.

Method Summary

void	close() Stops the watchdog thread.
String[]	getAnchors(HitDetails hit) Returns the anchors of a hit document.
byte[]	getContent(HitDetails hit) Returns the content of a hit document.
HitDetails	getDetails(Hit hit) Returns the details for a hit document.
HitDetails[]	getDetails(Hit[] hits) Returns the details for a set of hits.
String	getExplanation(Query query, Hit hit) Return an HTML-formatted explanation of how a query scored.
long	getFetchDate(HitDetails hit) Returns the anchors of a hit document.
ParseData	getParseData(HitDetails hit) Returns the ParseData of a hit document.
ParseText	getParseText(HitDetails hit) Returns the ParseText of a hit document.
String[]	getSegmentNames() Return the names of segments searched.
String[]	getSummary(HitDetails[] hits, Query query) Returns summaries for a set of details.
String	getSummary(HitDetails hit, Query query) Returns a summary for the given hit details.
static void	main(String[] args)
void	run()
Hits	search(Query query, int numHits, String dedupField, String sortField, boolean reverse) Return the top-scoring hits for a query.
void	updateSegments() Updates segment names.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getContextClassLoader, getName, getPriority, getThreadGroup, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setName, setPriority, 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

Constructor Detail

DistributedSearch.Client

public DistributedSearch.Client(File file)
                         throws IOException

Construct a client talking to servers listed in the named file. Each line in the file lists a server hostname and port, separated by whitespace.

DistributedSearch.Client

public DistributedSearch.Client(InetSocketAddress[] addresses)
                         throws IOException

Construct a client talking to the named servers.

Method Detail

updateSegments

public void updateSegments()
                    throws IOException

Updates segment names.

Throws:

IOException

getSegmentNames

public String[] getSegmentNames()

Return the names of segments searched.

search

public Hits search(Query query,
                   int numHits,
                   String dedupField,
                   String sortField,
                   boolean reverse)
            throws IOException

Description copied from interface: Searcher

Return the top-scoring hits for a query.

Specified by:

search in interface Searcher

Throws:

IOException

getExplanation

public String getExplanation(Query query,
                             Hit hit)
                      throws IOException

Description copied from interface: Searcher

Return an HTML-formatted explanation of how a query scored.

Specified by:

getExplanation in interface Searcher

Throws:

IOException

getDetails

public HitDetails getDetails(Hit hit)
                      throws IOException

Description copied from interface: HitDetailer

Returns the details for a hit document.

Specified by:

getDetails in interface HitDetailer

Throws:

IOException

getDetails

public HitDetails[] getDetails(Hit[] hits)
                        throws IOException

Description copied from interface: HitDetailer

Returns the details for a set of hits. Hook for parallel IPC calls.

Specified by:

getDetails in interface HitDetailer

Throws:

IOException

getSummary

public String getSummary(HitDetails hit,
                         Query query)
                  throws IOException

Description copied from interface: HitSummarizer

Returns a summary for the given hit details.

Specified by:

getSummary in interface HitSummarizer

Parameters:

hit - the details of the hit to be summarized

query - indicates what should be higlighted in the summary text

Throws:

IOException

getSummary

public String[] getSummary(HitDetails[] hits,
                           Query query)
                    throws IOException

Description copied from interface: HitSummarizer

Returns summaries for a set of details. Hook for parallel IPC calls.

Specified by:

getSummary in interface HitSummarizer

Parameters:

hits - the details of hits to be summarized

query - indicates what should be higlighted in the summary text

Throws:

IOException

getContent

public byte[] getContent(HitDetails hit)
                  throws IOException

Description copied from interface: HitContent

Returns the content of a hit document.

Specified by:

getContent in interface HitContent

Throws:

IOException

getParseData

public ParseData getParseData(HitDetails hit)
                       throws IOException

Description copied from interface: HitContent

Returns the ParseData of a hit document.

Specified by:

getParseData in interface HitContent

Throws:

IOException

getParseText

public ParseText getParseText(HitDetails hit)
                       throws IOException

Description copied from interface: HitContent

Returns the ParseText of a hit document.

Specified by:

getParseText in interface HitContent

Throws:

IOException

getAnchors

public String[] getAnchors(HitDetails hit)
                    throws IOException

Description copied from interface: HitContent

Returns the anchors of a hit document.

Specified by:

getAnchors in interface HitContent

Throws:

IOException

getFetchDate

public long getFetchDate(HitDetails hit)
                  throws IOException

Description copied from interface: HitContent

Returns the anchors of a hit document.

Specified by:

getFetchDate in interface HitContent

Throws:

IOException

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception

run

public void run()

Specified by:

run in interface Runnable

close

public void close()

Stops the watchdog thread.