public class ParentChildrenBlockJoinQuery extends Query
Modifier and Type | Field and Description |
---|---|
private Query |
childQuery |
private int |
parentDocId |
private BitSetProducer |
parentFilter |
Constructor and Description |
---|
ParentChildrenBlockJoinQuery(BitSetProducer parentFilter,
Query childQuery,
int parentDocId)
Creates a
ParentChildrenBlockJoinQuery instance |
Modifier and Type | Method and Description |
---|---|
Weight |
createWeight(IndexSearcher searcher,
ScoreMode scoreMode,
float boost)
Expert: Constructs an appropriate Weight implementation for this query.
|
boolean |
equals(java.lang.Object obj)
Override and implement query instance equivalence properly in a subclass.
|
int |
hashCode()
Override and implement query hash code properly in a subclass.
|
Query |
rewrite(IndexReader reader)
Expert: called to re-write queries into primitive queries.
|
java.lang.String |
toString(java.lang.String field)
Prints a query to a string, with
field assumed to be the
default field and omitted. |
void |
visit(QueryVisitor visitor)
Recurse through the query tree, visiting any child queries
|
classHash, sameClassAs, toString
private final BitSetProducer parentFilter
private final Query childQuery
private final int parentDocId
public ParentChildrenBlockJoinQuery(BitSetProducer parentFilter, Query childQuery, int parentDocId)
ParentChildrenBlockJoinQuery
instanceparentFilter
- A filter identifying parent documents.childQuery
- A child query that determines which child docs are matchingparentDocId
- The top level doc id of that parent to return children documents forpublic boolean equals(java.lang.Object obj)
Query
QueryCache
works properly.
Typically a query will be equal to another only if it's an instance of
the same class and its document-filtering properties are identical that other
instance. Utility methods are provided for certain repetitive code.equals
in class Query
Query.sameClassAs(Object)
,
Query.classHash()
public int hashCode()
Query
QueryCache
works properly.hashCode
in class Query
Query.equals(Object)
public java.lang.String toString(java.lang.String field)
Query
field
assumed to be the
default field and omitted.public void visit(QueryVisitor visitor)
Query
public Query rewrite(IndexReader reader) throws java.io.IOException
Query
public Weight createWeight(IndexSearcher searcher, ScoreMode scoreMode, float boost) throws java.io.IOException
Query
Only implemented by primitive queries, which re-write to themselves.
createWeight
in class Query
scoreMode
- How the produced scorers will be consumed.boost
- The boost that is propagated by the parent queries.java.io.IOException