Package org.apache.lucene.search.join
Class ParentChildrenBlockJoinQuery
- java.lang.Object
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- org.apache.lucene.search.Query
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- org.apache.lucene.search.join.ParentChildrenBlockJoinQuery
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public class ParentChildrenBlockJoinQuery extends Query
A query that returns all the matching child documents for a specific parent document indexed together in the same block. The provided child query determines which matching child doc is being returned.- WARNING: This API is experimental and might change in incompatible ways in the next release.
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Constructor Summary
Constructors Constructor Description ParentChildrenBlockJoinQuery(BitSetProducer parentFilter, Query childQuery, int parentDocId)Creates aParentChildrenBlockJoinQueryinstance
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description WeightcreateWeight(IndexSearcher searcher, ScoreMode scoreMode, float boost)booleanequals(Object obj)inthashCode()Queryrewrite(IndexSearcher indexSearcher)StringtoString(String field)voidvisit(QueryVisitor visitor)-
Methods inherited from class org.apache.lucene.search.Query
classHash, rewrite, sameClassAs, toString
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Constructor Detail
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ParentChildrenBlockJoinQuery
public ParentChildrenBlockJoinQuery(BitSetProducer parentFilter, Query childQuery, int parentDocId)
Creates aParentChildrenBlockJoinQueryinstance- Parameters:
parentFilter- 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 for
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Method Detail
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visit
public void visit(QueryVisitor visitor)
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rewrite
public Query rewrite(IndexSearcher indexSearcher) throws IOException
- Overrides:
rewritein classQuery- Throws:
IOException
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createWeight
public Weight createWeight(IndexSearcher searcher, ScoreMode scoreMode, float boost) throws IOException
- Overrides:
createWeightin classQuery- Throws:
IOException
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