Class ReadTask
- java.lang.Object
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- org.apache.lucene.benchmark.byTask.tasks.PerfTask
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- org.apache.lucene.benchmark.byTask.tasks.ReadTask
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- All Implemented Interfaces:
Cloneable
- Direct Known Subclasses:
SearchTask
,SearchTravTask
,SearchWithSortTask
,WarmTask
public abstract class ReadTask extends PerfTask
Read index (abstract) task. Sub classes implement withSearch(), withWarm(), withTraverse() and withRetrieve() methods to configure the actual action.Note: All ReadTasks reuse the reader if it is already open. Otherwise a reader is opened at start and closed at the end.
The
search.num.hits
config parameter sets the top number of hits to collect during searching. Ifprint.hits.field
is set, then each hit is printed along with the value of that field.Other side effects: none.
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Constructor Summary
Constructors Constructor Description ReadTask(PerfRunData runData)
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description protected Collector
createCollector()
int
doLogic()
Perform the task once (ignoring repetitions specification) Return number of work items done by this task.abstract QueryMaker
getQueryMaker()
Return query maker used for this task.protected Sort
getSort()
int
numHits()
Specify the number of hits to retrieve.protected Document
retrieveDoc(StoredFields storedFields, int id)
void
setup()
Task setup work that should not be measured for that specific task.int
traversalSize()
Specify the number of hits to traverse.boolean
withCollector()
abstract boolean
withRetrieve()
Return true if, with search and results traversing, docs should be retrieved.abstract boolean
withSearch()
Return true if search should be performed.protected int
withTopDocs(IndexSearcher searcher, Query q, TopDocs hits)
boolean
withTotalHits()
Whether totalHits should be computed (only useful with field sort)abstract boolean
withTraverse()
Return true if, with search, results should be traversed.abstract boolean
withWarm()
Return true if warming should be performed.-
Methods inherited from class org.apache.lucene.benchmark.byTask.tasks.PerfTask
clone, close, getAlgLineNum, getBackgroundDeltaPriority, getDepth, getLogMessage, getName, getParams, getRunData, getRunInBackground, isDisableCounting, runAndMaybeStats, setAlgLineNum, setDepth, setDisableCounting, setName, setParams, setRunInBackground, shouldNeverLogAtStart, shouldNotRecordStats, stopNow, supportsParams, tearDown, toString
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Constructor Detail
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ReadTask
public ReadTask(PerfRunData runData)
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Method Detail
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doLogic
public int doLogic() throws Exception
Description copied from class:PerfTask
Perform the task once (ignoring repetitions specification) Return number of work items done by this task. For indexing that can be number of docs added. For warming that can be number of scanned items, etc.
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withTopDocs
protected int withTopDocs(IndexSearcher searcher, Query q, TopDocs hits) throws Exception
- Throws:
Exception
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retrieveDoc
protected Document retrieveDoc(StoredFields storedFields, int id) throws IOException
- Throws:
IOException
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getQueryMaker
public abstract QueryMaker getQueryMaker()
Return query maker used for this task.
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withSearch
public abstract boolean withSearch()
Return true if search should be performed.
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withCollector
public boolean withCollector()
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withWarm
public abstract boolean withWarm()
Return true if warming should be performed.
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withTraverse
public abstract boolean withTraverse()
Return true if, with search, results should be traversed.
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withTotalHits
public boolean withTotalHits()
Whether totalHits should be computed (only useful with field sort)
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traversalSize
public int traversalSize()
Specify the number of hits to traverse. Tasks should override this if they want to restrict the number of hits that are traversed whenwithTraverse()
is true. Must be greater than 0.Read task calculates the traversal as: Math.min(hits.length(), traversalSize())
- Returns:
- Integer.MAX_VALUE
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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 fromPerfTask.doLogic()
to this method. Only the work done inPerfTask.doLogic()
is 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.
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numHits
public int numHits()
Specify the number of hits to retrieve. Tasks should override this if they want to restrict the number of hits that are collected during searching. Must be greater than 0.- Returns:
- 10 by default, or search.num.hits config if set.
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withRetrieve
public abstract boolean withRetrieve()
Return true if, with search and results traversing, docs should be retrieved.
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getSort
protected Sort getSort()
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