Module org.apache.lucene.grouping

Package org.apache.lucene.search.grouping

Class AllGroupHeadsCollector.SortingGroupHead<T>

java.lang.Object

org.apache.lucene.search.grouping.AllGroupHeadsCollector.GroupHead<T>

org.apache.lucene.search.grouping.AllGroupHeadsCollector.SortingGroupHead<T>

Enclosing class:

AllGroupHeadsCollector<T>

private static class AllGroupHeadsCollector.SortingGroupHead<T>
extends AllGroupHeadsCollector.GroupHead<T>

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final FieldComparator[]	comparators
(package private) final LeafFieldComparator[]	leafComparators

Fields inherited from class org.apache.lucene.search.grouping.AllGroupHeadsCollector.GroupHead

doc, docBase, groupValue

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SortingGroupHead(Sort sort, T groupValue, int doc, LeafReaderContext context, Scorable scorer)

Method Summary

Modifier and Type	Method	Description
int	compare(int compIDX, int doc)	Compares the specified document for a specified comparator against the current most relevant document.
void	setNextReader(LeafReaderContext ctx)	Called for each segment
protected void	setScorer(Scorable scorer)	Called for each segment
void	updateDocHead(int doc)	Updates the current most relevant document with the specified document.

Methods inherited from class java.lang.Object

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

Field Details

comparators

final FieldComparator[] comparators

leafComparators

final LeafFieldComparator[] leafComparators

Constructor Details

SortingGroupHead

protected SortingGroupHead(Sort sort,
 T groupValue,
 int doc,
 LeafReaderContext context,
 Scorable scorer)
                    throws IOException

Throws:

IOException

Method Details

setNextReader

public void setNextReader(LeafReaderContext ctx)
                   throws IOException

Description copied from class: AllGroupHeadsCollector.GroupHead

Called for each segment

Overrides:

setNextReader in class AllGroupHeadsCollector.GroupHead<T>

Throws:

IOException

setScorer

protected void setScorer(Scorable scorer)
                  throws IOException

Description copied from class: AllGroupHeadsCollector.GroupHead

Called for each segment

Specified by:

setScorer in class AllGroupHeadsCollector.GroupHead<T>

Throws:

IOException

compare

public int compare(int compIDX,
 int doc)
            throws IOException

Description copied from class: AllGroupHeadsCollector.GroupHead

Compares the specified document for a specified comparator against the current most relevant document.

Specified by:

compare in class AllGroupHeadsCollector.GroupHead<T>

Parameters:

compIDX - The comparator index of the specified comparator.

doc - The specified document.

Returns:

-1 if the specified document wasn't competitive against the current most relevant document, 1 if the specified document was competitive against the current most relevant document. Otherwise 0.

Throws:

IOException - If I/O related errors occur

updateDocHead

public void updateDocHead(int doc)
                   throws IOException

Description copied from class: AllGroupHeadsCollector.GroupHead

Updates the current most relevant document with the specified document.

Specified by:

updateDocHead in class AllGroupHeadsCollector.GroupHead<T>

Parameters:

doc - The specified document

Throws:

IOException - If I/O related errors occur