org.apache.solr.search.FunctionRangeQuery Maven / Gradle / Ivy
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* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
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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());
}
}
}