public class FunctionAllGroupsCollector extends AbstractAllGroupsCollector<MutableValue>
Implementation detail: Uses ValueSource
and FunctionValues
to retrieve the
field values to group by.
Modifier and Type | Field and Description |
---|---|
private FunctionValues.ValueFiller |
filler |
private ValueSource |
groupBy |
private java.util.SortedSet<MutableValue> |
groups |
private MutableValue |
mval |
private java.util.Map<?,?> |
vsContext |
Constructor and Description |
---|
FunctionAllGroupsCollector(ValueSource groupBy,
java.util.Map<?,?> vsContext)
Constructs a
FunctionAllGroupsCollector instance. |
Modifier and Type | Method and Description |
---|---|
void |
collect(int doc)
Called once for every document matching a query, with the unbased document
number.
|
protected void |
doSetNextReader(LeafReaderContext context)
This method is called before collecting
context . |
java.util.Collection<MutableValue> |
getGroups()
Returns the group values
|
getGroupCount, needsScores, setScorer
getLeafCollector
private final java.util.Map<?,?> vsContext
private final ValueSource groupBy
private final java.util.SortedSet<MutableValue> groups
private FunctionValues.ValueFiller filler
private MutableValue mval
public FunctionAllGroupsCollector(ValueSource groupBy, java.util.Map<?,?> vsContext)
FunctionAllGroupsCollector
instance.groupBy
- The ValueSource
to group byvsContext
- The ValueSource contextpublic java.util.Collection<MutableValue> getGroups()
AbstractAllGroupsCollector
This is an unordered collections of group values. For each group that matched the query there is a BytesRef
representing a group value.
getGroups
in class AbstractAllGroupsCollector<MutableValue>
public void collect(int doc) throws java.io.IOException
LeafCollector
Note: The collection of the current segment can be terminated by throwing
a CollectionTerminatedException
. In this case, the last docs of the
current LeafReaderContext
will be skipped and IndexSearcher
will swallow the exception and continue collection with the next leaf.
Note: This is called in an inner search loop. For good search performance,
implementations of this method should not call IndexSearcher.doc(int)
or
IndexReader.document(int)
on every hit.
Doing so can slow searches by an order of magnitude or more.
collect
in interface LeafCollector
collect
in class SimpleCollector
java.io.IOException
protected void doSetNextReader(LeafReaderContext context) throws java.io.IOException
SimpleCollector
context
.doSetNextReader
in class SimpleCollector
java.io.IOException