/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.solr.search; import java.io.IOException; import java.util.Map; import java.util.Set; import org.apache.lucene.index.IndexReader; import org.apache.lucene.search.IndexSearcher; import org.apache.lucene.search.Query; import org.apache.lucene.search.QueryVisitor; import org.apache.lucene.search.Rescorer; import org.apache.lucene.search.ScoreMode; import org.apache.lucene.search.TopDocsCollector; import org.apache.lucene.search.Weight; import org.apache.lucene.util.BytesRef; import org.apache.solr.handler.component.MergeStrategy; import org.apache.solr.handler.component.QueryElevationComponent; import org.apache.solr.request.SolrRequestInfo; public abstract class AbstractReRankQuery extends RankQuery { protected Query mainQuery; final protected int reRankDocs; final protected Rescorer reRankQueryRescorer; protected Set<BytesRef> boostedPriority; public AbstractReRankQuery(Query mainQuery, int reRankDocs, Rescorer reRankQueryRescorer) { this.mainQuery = mainQuery; this.reRankDocs = reRankDocs; this.reRankQueryRescorer = reRankQueryRescorer; } public RankQuery wrap(Query _mainQuery) { if(_mainQuery != null){ this.mainQuery = _mainQuery; } return this; } public MergeStrategy getMergeStrategy() { return null; } @SuppressWarnings({"unchecked", "rawtypes"}) public TopDocsCollector getTopDocsCollector(int len, QueryCommand cmd, IndexSearcher searcher) throws IOException { if(this.boostedPriority == null) { SolrRequestInfo info = SolrRequestInfo.getRequestInfo(); if(info != null) { Map context = info.getReq().getContext(); this.boostedPriority = (Set<BytesRef>)context.get(QueryElevationComponent.BOOSTED); } } return new ReRankCollector(reRankDocs, len, reRankQueryRescorer, cmd, searcher, boostedPriority); } public Query rewrite(IndexReader reader) throws IOException { Query q = mainQuery.rewrite(reader); if (q != mainQuery) { return rewrite(q); } return super.rewrite(reader); } protected abstract Query rewrite(Query rewrittenMainQuery) throws IOException; @Override public Weight createWeight(IndexSearcher searcher, ScoreMode scoreMode, float boost) throws IOException{ final Weight mainWeight = mainQuery.createWeight(searcher, scoreMode, boost); return new ReRankWeight(mainQuery, reRankQueryRescorer, searcher, mainWeight); } @Override public void visit(QueryVisitor visitor) { visitor.visitLeaf(this); } }