Package org.apache.lucene.benchmark.byTask.feeds

Class LineDocSource

java.lang.Object

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

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

org.apache.lucene.benchmark.byTask.feeds.LineDocSource

All Implemented Interfaces:

Closeable, AutoCloseable

public class LineDocSource
extends ContentSource

A ContentSource reading one line at a time as a Document from a single file. This saves IO cost (over DirContentSource) of recursing through a directory and opening a new file for every document.
The expected format of each line is (arguments are separated by <TAB>): title, date, body. If a line is read in a different format, a RuntimeException will be thrown. In general, you should use this content source for files that were created with WriteLineDocTask.

Config properties:

• docs.file=<path to the file>
• content.source.encoding - default to UTF-8.
• line.parser - default to LineDocSource.HeaderLineParser if a header line exists which differs from WriteLineDocTask.DEFAULT_FIELDS and to LineDocSource.SimpleLineParser otherwise.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LineDocSource.HeaderLineParser	LineDocSource.LineParser which sets field names and order by the header - any header - of the lines file.
static class	LineDocSource.LineParser	Reader of a single input line into DocData.
static class	LineDocSource.SimpleLineParser	LineDocSource.LineParser which ignores the header passed to its constructor and assumes simply that field names and their order are the same as in WriteLineDocTask.DEFAULT_FIELDS

Field Summary

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

encoding, forever, logStep, verbose

Constructor Summary

Constructors

Constructor	Description
LineDocSource()

Method Summary

Modifier and Type	Method	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.
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

Constructor Detail

LineDocSource

public LineDocSource()

Method Detail

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 AutoCloseable

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