public class ToChildBlockJoinQuery extends Query
ToParentBlockJoinQuery
, except this
query joins in reverse: you provide a Query matching
parent documents and it joins down to child
documents.Constructor and Description |
---|
ToChildBlockJoinQuery(Query parentQuery,
BitSetProducer parentsFilter)
Create a ToChildBlockJoinQuery.
|
Modifier and Type | Method and Description |
---|---|
ToChildBlockJoinQuery |
clone()
Returns a clone of this query.
|
Weight |
createWeight(IndexSearcher searcher,
boolean needsScores)
Expert: Constructs an appropriate Weight implementation for this query.
|
boolean |
equals(Object _other) |
Query |
getParentQuery()
Return our parent query.
|
int |
hashCode() |
Query |
rewrite(IndexReader reader)
Expert: called to re-write queries into primitive queries.
|
String |
toString(String field)
Prints a query to a string, with
field assumed to be the
default field and omitted. |
public ToChildBlockJoinQuery(Query parentQuery, BitSetProducer parentsFilter)
parentQuery
- Query that matches parent documentsparentsFilter
- Filter identifying the parent documents.public Weight createWeight(IndexSearcher searcher, boolean needsScores) throws IOException
Query
Only implemented by primitive queries, which re-write to themselves.
createWeight
in class Query
needsScores
- True if document scores (Scorer.score()
) or match
frequencies (Scorer.freq()
) are needed.IOException
public Query getParentQuery()
public Query rewrite(IndexReader reader) throws IOException
Query
rewrite
in class Query
IOException
public String toString(String field)
Query
field
assumed to be the
default field and omitted.public ToChildBlockJoinQuery clone()
Query
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