org.apache.lucene.benchmark.byTask.feeds

Class TrecContentSource

java.lang.Object

org.apache.lucene.benchmark.byTask.feeds.ContentItemsSource

org.apache.lucene.benchmark.byTask.feeds.ContentSource

org.apache.lucene.benchmark.byTask.feeds.TrecContentSource

All Implemented Interfaces:

Closeable

public class TrecContentSource
extends ContentSource

Implements a ContentSource over the TREC collection.

Supports the following configuration parameters (on top of ContentSource):

• work.dir - specifies the working directory. Required if "docs.dir" denotes a relative path (default=work).
• docs.dir - specifies the directory where the TREC files reside. Can be set to a relative path if "work.dir" is also specified (default=trec).
• trec.doc.parser - specifies the TrecDocParser class to use for parsing the TREC documents content (default=TrecGov2Parser).
• html.parser - specifies the HTMLParser class to use for parsing the HTML parts of the TREC documents content (default=DemoHTMLParser).
• content.source.encoding - if not specified, ISO-8859-1 is used.
• content.source.excludeIteration - if true, do not append iteration number to docname

Field Summary

Fields

Modifier and Type	Field and Description
static String	DOC
static String	DOCNO
static String	NEW_LINE separator between lines in the byffer
static String	TERMINATING_DOC
static String	TERMINATING_DOCNO

Fields inherited from class org.apache.lucene.benchmark.byTask.feeds.ContentItemsSource

encoding, forever, logStep, verbose

Constructor Summary

Constructors

Constructor and Description
TrecContentSource()

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Called when reading from this content source is no longer required.
DocData	getNextDocData(DocData docData) Returns the next DocData from the content source.
Date	parseDate(String dateStr)
void	resetInputs() Resets the input for this content source, so that the test would behave as if it was just started, input-wise.
void	setConfig(Config config) Sets the Config for this content source.

Methods inherited from class org.apache.lucene.benchmark.byTask.feeds.ContentItemsSource

addBytes, addItem, collectFiles, getBytesCount, getConfig, getItemsCount, getTotalBytesCount, getTotalItemsCount, printStatistics, shouldLog

Methods inherited from class java.lang.Object

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

Field Detail

DOCNO

public static final String DOCNO

See Also:

Constant Field Values

TERMINATING_DOCNO

public static final String TERMINATING_DOCNO

See Also:

Constant Field Values

DOC

public static final String DOC

See Also:

Constant Field Values

TERMINATING_DOC

public static final String TERMINATING_DOC

See Also:

Constant Field Values

NEW_LINE

public static final String NEW_LINE

separator between lines in the byffer

Constructor Detail

TrecContentSource

public TrecContentSource()

Method Detail

parseDate

public Date parseDate(String dateStr)

close

public void close()
           throws IOException

Description copied from class: ContentItemsSource

Called when reading from this content source is no longer required.

Specified by:

close in interface Closeable

Specified by:

close in class ContentItemsSource

Throws:

IOException

getNextDocData

public DocData getNextDocData(DocData docData)
                       throws NoMoreDataException,
                              IOException

Description copied from class: ContentSource

Returns the next DocData from the content source. Implementations must account for multi-threading, as multiple threads can call this method simultaneously.

Specified by:

getNextDocData in class ContentSource

Throws:

NoMoreDataException

IOException

resetInputs

public void resetInputs()
                 throws IOException

Description copied from class: ContentItemsSource

Resets the input for this content source, so that the test would behave as if it was just started, input-wise.

NOTE: the default implementation resets the number of bytes and items generated since the last reset, so it's important to call super.resetInputs in case you override this method.

Overrides:

resetInputs in class ContentItemsSource

Throws:

IOException

setConfig

public void setConfig(Config config)

Description copied from class: ContentItemsSource

Sets the Config for this content source. If you override this method, you must call super.setConfig.

Overrides:

setConfig in class ContentItemsSource