org.apache.lucene.benchmark.byTask.tasks
Class SearchTravRetHighlightTask

java.lang.Object
  org.apache.lucene.benchmark.byTask.tasks.PerfTask
      org.apache.lucene.benchmark.byTask.tasks.ReadTask
          org.apache.lucene.benchmark.byTask.tasks.SearchTravTask
              org.apache.lucene.benchmark.byTask.tasks.SearchTravRetHighlightTask

All Implemented Interfaces:

Cloneable

public class SearchTravRetHighlightTask
extends SearchTravTask

Search and Traverse and Retrieve docs task. Highlight the fields in the retrieved documents. Uses the SimpleHTMLFormatter for formatting.

Note: This task reuses the reader if it is already open. Otherwise a reader is opened at start and closed at the end.

Takes optional multivalued, comma separated param string as: size[<traversal size>],highlight[<int>],maxFrags[<int>],mergeContiguous[<boolean>],fields[name1;name2;...]

• traversal size - The number of hits to traverse, otherwise all will be traversed
• highlight - The number of the hits to highlight. Will always be less than or equal to traversal size. Default is Integer.MAX_VALUE (i.e. hits.length())
• maxFrags - The maximum number of fragments to score by the highlighter
• mergeContiguous - true if contiguous fragments should be merged.
• fields - The fields to highlight. If not specified all fields will be highlighted (or at least attempted)

Example:

"SearchHlgtSameRdr" SearchTravRetHighlight(size[10],highlight[10],mergeContiguous[true],maxFrags[3],fields[body]) > : 1000
 

Documents must be stored in order for this task to work. Additionally, term vector positions can be used as well.

Other side effects: counts additional 1 (record) for each traversed hit, and 1 more for each retrieved (non null) document and 1 for each fragment returned.

Field Summary

protected int	maxFrags
protected boolean	mergeContiguous
protected int	numToHighlight
protected Set	paramFields

Fields inherited from class org.apache.lucene.benchmark.byTask.tasks.SearchTravTask

traversalSize

Fields inherited from class org.apache.lucene.benchmark.byTask.tasks.PerfTask

NEW_LINE, params

Constructor Summary

SearchTravRetHighlightTask(PerfRunData runData)

Method Summary

protected Collection	getFieldsToHighlight(Document document) Define the fields to highlight.
boolean	isMergeContiguousFragments()
int	maxNumFragments()
int	numToHighlight() Set to the number of documents to highlight.
void	setParams(String params) Set the params of this task.
void	setup() Task setup work that should not be measured for that specific task.
boolean	withRetrieve() Return true if, with search & results traversing, docs should be retrieved.

Methods inherited from class org.apache.lucene.benchmark.byTask.tasks.SearchTravTask

getQueryMaker, supportsParams, traversalSize, withSearch, withTraverse, withWarm

Methods inherited from class org.apache.lucene.benchmark.byTask.tasks.ReadTask

doHighlight, doLogic, getHighlighter, getSort, retrieveDoc

Methods inherited from class org.apache.lucene.benchmark.byTask.tasks.PerfTask

clone, getDepth, getName, getParams, getRunData, isDisableCounting, runAndMaybeStats, setDepth, setDisableCounting, setName, shouldNeverLogAtStart, shouldNotRecordStats, tearDown, toString

Methods inherited from class java.lang.Object

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

Field Detail

numToHighlight

protected int numToHighlight

mergeContiguous

protected boolean mergeContiguous

maxFrags

protected int maxFrags

paramFields

protected Set paramFields

Constructor Detail

SearchTravRetHighlightTask

public SearchTravRetHighlightTask(PerfRunData runData)

Method Detail

setup

public void setup()
           throws Exception

Description copied from class: PerfTask

Task setup work that should not be measured for that specific task. By default it does nothing, but tasks can implement this, moving work from doLogic() to this method. Only the work done in doLogicis measured for this task. Notice that higher level (sequence) tasks containing this task would then measure larger time than the sum of their contained tasks.

Overrides:

setup in class PerfTask

Throws:

Exception

withRetrieve

public boolean withRetrieve()

Description copied from class: ReadTask

Return true if, with search & results traversing, docs should be retrieved.

Overrides:

withRetrieve in class SearchTravTask

numToHighlight

public int numToHighlight()

Description copied from class: ReadTask

Set to the number of documents to highlight.

Overrides:

numToHighlight in class ReadTask

Returns:

The number of the results to highlight. O means no docs will be highlighted.

isMergeContiguousFragments

public boolean isMergeContiguousFragments()

Overrides:

isMergeContiguousFragments in class ReadTask

Returns:

true if the highlighter should merge contiguous fragments

maxNumFragments

public int maxNumFragments()

Overrides:

maxNumFragments in class ReadTask

Returns:

the maxiumum number of highlighter fragments

getFieldsToHighlight

protected Collection getFieldsToHighlight(Document document)

Description copied from class: ReadTask

Define the fields to highlight. Base implementation returns all fields

Overrides:

getFieldsToHighlight in class ReadTask

Parameters:

document - The Document

Returns:

A Collection of Field names (Strings)

setParams

public void setParams(String params)

Description copied from class: PerfTask

Set the params of this task.

Overrides:

setParams in class SearchTravTask