public class ToChildBlockJoinQuery
extends org.apache.lucene.search.Query
ToParentBlockJoinQuery, except this
query joins in reverse: you provide a Query matching
parent documents and it joins down to child
documents.
WARNING: to create the parents filter, always use
RawTermFilter (so that the filter
includes deleted docs), wrapped with CachingWrapperFilter (so that the returned bit set per
reader is a FixedBitSet), specifying
DeletesMode.IGNORE (so that on reopen, the filter still
includes deleted docs). Failure to do this can result in
completely wrong documents being returned! For example:
Filter parents = new CachingWrapperFilter(
new RawTermFilter(new Term("parent", "yes")),
CachingWrapperFilter.DeletesMode.IGNORE);
| Constructor and Description |
|---|
ToChildBlockJoinQuery(org.apache.lucene.search.Query parentQuery,
org.apache.lucene.search.Filter parentsFilter,
boolean doScores) |
| Modifier and Type | Method and Description |
|---|---|
Object |
clone() |
org.apache.lucene.search.Weight |
createWeight(org.apache.lucene.search.Searcher searcher) |
boolean |
equals(Object _other) |
void |
extractTerms(Set<org.apache.lucene.index.Term> terms) |
int |
hashCode() |
org.apache.lucene.search.Query |
rewrite(org.apache.lucene.index.IndexReader reader) |
String |
toString(String field) |
public ToChildBlockJoinQuery(org.apache.lucene.search.Query parentQuery,
org.apache.lucene.search.Filter parentsFilter,
boolean doScores)
public org.apache.lucene.search.Weight createWeight(org.apache.lucene.search.Searcher searcher)
throws IOException
createWeight in class org.apache.lucene.search.QueryIOExceptionpublic void extractTerms(Set<org.apache.lucene.index.Term> terms)
extractTerms in class org.apache.lucene.search.Querypublic org.apache.lucene.search.Query rewrite(org.apache.lucene.index.IndexReader reader)
throws IOException
rewrite in class org.apache.lucene.search.QueryIOExceptionpublic String toString(String field)
toString in class org.apache.lucene.search.Querypublic boolean equals(Object _other)
equals in class org.apache.lucene.search.Querypublic int hashCode()
hashCode in class org.apache.lucene.search.Querypublic Object clone()
clone in class org.apache.lucene.search.QueryCopyright © 2000-2012 Apache Software Foundation. All Rights Reserved.