Package org.apache.lucene.search.join

Class ToChildBlockJoinQuery

java.lang.Object
org.apache.lucene.search.Query
org.apache.lucene.search.join.ToChildBlockJoinQuery
public class ToChildBlockJoinQuery extends org.apache.lucene.search.Query
Just like ToParentBlockJoinQuery, except this query joins in reverse: you provide a Query matching parent documents and it joins down to child documents.
WARNING: This API is experimental and might change in incompatible ways in the next release.

  • Constructor Summary

    Constructors
    Constructor
    Description
    ToChildBlockJoinQuery(org.apache.lucene.search.Query parentQuery, BitSetProducer parentsFilter)
    Create a ToChildBlockJoinQuery.

  • Method Summary

    Modifier and Type
    Method
    Description
    org.apache.lucene.search.Weight
    createWeight(org.apache.lucene.search.IndexSearcher searcher, org.apache.lucene.search.ScoreMode scoreMode, float boost)
     
    boolean
    equals(Object other)
     
    org.apache.lucene.search.Query
    getParentQuery()
    Return our parent query.
    int
    hashCode()
     
    org.apache.lucene.search.Query
    rewrite(org.apache.lucene.index.IndexReader reader)
     
    String
    toString(String field)
     
    void
    visit(org.apache.lucene.search.QueryVisitor visitor)
     

    Methods inherited from class org.apache.lucene.search.Query

    classHash, sameClassAs, toString

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

  • Constructor Details

    • ToChildBlockJoinQuery

      public ToChildBlockJoinQuery(org.apache.lucene.search.Query parentQuery, BitSetProducer parentsFilter)
      Create a ToChildBlockJoinQuery.
      Parameters:
      parentQuery - Query that matches parent documents
      parentsFilter - Filter identifying the parent documents.

  • Method Details

    • visit

      public void visit(org.apache.lucene.search.QueryVisitor visitor)
      Specified by:
      visit in class org.apache.lucene.search.Query

    • createWeight

      public org.apache.lucene.search.Weight createWeight(org.apache.lucene.search.IndexSearcher searcher, org.apache.lucene.search.ScoreMode scoreMode, float boost) throws IOException
      Overrides:
      createWeight in class org.apache.lucene.search.Query
      Throws:
      IOException

    • getParentQuery

      public org.apache.lucene.search.Query getParentQuery()
      Return our parent query.

    • rewrite

      public org.apache.lucene.search.Query rewrite(org.apache.lucene.index.IndexReader reader) throws IOException
      Overrides:
      rewrite in class org.apache.lucene.search.Query
      Throws:
      IOException

    • toString

      public String toString(String field)
      Specified by:
      toString in class org.apache.lucene.search.Query

    • equals

      public boolean equals(Object other)
      Specified by:
      equals in class org.apache.lucene.search.Query

    • hashCode

      public int hashCode()
      Specified by:
      hashCode in class org.apache.lucene.search.Query