org.apache.lucene.search.grouping.dv
Class DVSecondPassGroupingCollector<GROUP_VALUE>
java.lang.Object
org.apache.lucene.search.Collector
org.apache.lucene.search.grouping.AbstractSecondPassGroupingCollector<GROUP_VALUE>
org.apache.lucene.search.grouping.dv.DVSecondPassGroupingCollector<GROUP_VALUE>
public abstract class DVSecondPassGroupingCollector<GROUP_VALUE>
- extends AbstractSecondPassGroupingCollector<GROUP_VALUE>
IDV based implementation of AbstractSecondPassGroupingCollector
.
- WARNING: This API is experimental and might change in incompatible ways in the next release.
Method Summary |
static
|
create(String groupField,
boolean diskResident,
DocValues.Type type,
Collection<SearchGroup<T>> searchGroups,
Sort groupSort,
Sort withinGroupSort,
int maxDocsPerGroup,
boolean getScores,
boolean getMaxScores,
boolean fillSortFields)
Constructs a DVSecondPassGroupingCollector . |
protected DocValues.Source |
getDefaultSource(AtomicReaderContext readerContext)
|
protected abstract void |
setDocValuesSources(DocValues.Source source,
AtomicReaderContext readerContext)
Sets the idv source for concrete implementations to use. |
void |
setNextReader(AtomicReaderContext readerContext)
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
create
public static <T> DVSecondPassGroupingCollector<T> create(String groupField,
boolean diskResident,
DocValues.Type type,
Collection<SearchGroup<T>> searchGroups,
Sort groupSort,
Sort withinGroupSort,
int maxDocsPerGroup,
boolean getScores,
boolean getMaxScores,
boolean fillSortFields)
throws IOException
- Constructs a
DVSecondPassGroupingCollector
.
Selects and constructs the most optimal second pass collector implementation for grouping by DocValues
.
- Parameters:
groupField
- The field to group bydiskResident
- Whether the values to group by should be disk residenttype
- The DocValues.Type
which is used to select a concrete implementation.searchGroups
- The groups from the first phase searchgroupSort
- The sort used for the groupswithinGroupSort
- The sort used for documents inside a groupmaxDocsPerGroup
- The maximum number of documents to collect per groupgetScores
- Whether to include scores for the documents inside a groupgetMaxScores
- Whether to keep track of the higest score per groupfillSortFields
- Whether to include the sort values
- Returns:
- the most optimal second pass collector implementation for grouping by
DocValues
- Throws:
IOException
- If I/O related errors occur
setNextReader
public void setNextReader(AtomicReaderContext readerContext)
throws IOException
- Overrides:
setNextReader
in class AbstractSecondPassGroupingCollector<GROUP_VALUE>
- Throws:
IOException
setDocValuesSources
protected abstract void setDocValuesSources(DocValues.Source source,
AtomicReaderContext readerContext)
- Sets the idv source for concrete implementations to use.
- Parameters:
source
- The idv source to be used by concrete implementationsreaderContext
- The current reader context
getDefaultSource
protected DocValues.Source getDefaultSource(AtomicReaderContext readerContext)
- Parameters:
readerContext
- The current reader context
- Returns:
- The default source when no doc values are available.
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