| /* |
| * 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 org.apache.lucene.index.LeafReaderContext; |
| import org.apache.lucene.queries.function.FunctionValues; |
| import org.apache.lucene.queries.function.ValueSource; |
| import org.apache.lucene.queries.function.ValueSourceScorer; |
| import org.apache.lucene.search.IndexSearcher; |
| import org.apache.lucene.search.ScoreMode; |
| import org.apache.lucene.search.Weight; |
| import org.apache.solr.search.function.ValueSourceRangeFilter; |
| |
| // This class works as either a normal constant score query, or as a PostFilter using a collector |
| public class FunctionRangeQuery extends SolrConstantScoreQuery implements PostFilter { |
| |
| final ValueSourceRangeFilter rangeFilt; |
| |
| public FunctionRangeQuery(ValueSourceRangeFilter filter) { |
| super(filter); |
| this.rangeFilt = filter; |
| this.cost = 100; // default behavior should be PostFiltering |
| } |
| |
| @Override |
| public DelegatingCollector getFilterCollector(IndexSearcher searcher) { |
| @SuppressWarnings({"rawtypes"}) |
| Map fcontext = ValueSource.newContext(searcher); |
| Weight weight = rangeFilt.createWeight(searcher, ScoreMode.COMPLETE, 1); |
| return new FunctionRangeCollector(fcontext, weight); |
| } |
| |
| class FunctionRangeCollector extends DelegatingCollector { |
| @SuppressWarnings({"rawtypes"}) |
| final Map fcontext; |
| final Weight weight; |
| ValueSourceScorer scorer; |
| int maxdoc; |
| |
| @SuppressWarnings({"rawtypes"}) |
| public FunctionRangeCollector(Map fcontext, Weight weight) { |
| this.fcontext = fcontext; |
| this.weight = weight; |
| } |
| |
| @Override |
| public void collect(int doc) throws IOException { |
| assert doc < maxdoc; |
| if (scorer.matches(doc)) { |
| leafDelegate.collect(doc); |
| } |
| } |
| |
| @Override |
| protected void doSetNextReader(LeafReaderContext context) throws IOException { |
| super.doSetNextReader(context); |
| maxdoc = context.reader().maxDoc(); |
| @SuppressWarnings({"unchecked"}) |
| FunctionValues dv = rangeFilt.getValueSource().getValues(fcontext, context); |
| scorer = dv.getRangeScorer(weight, context, rangeFilt.getLowerVal(), rangeFilt.getUpperVal(), rangeFilt.isIncludeLower(), rangeFilt.isIncludeUpper()); |
| } |
| } |
| } |