/*
* 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.analytics.accumulator.facet;
import java.io.IOException;
import org.apache.lucene.index.LeafReaderContext;
import org.apache.solr.analytics.accumulator.ValueAccumulator;
import org.apache.solr.analytics.statistics.StatsCollector;
import org.apache.solr.common.util.NamedList;
/**
* An Accumulator that manages a certain query of a given query facet.
*/
public class QueryFacetAccumulator extends ValueAccumulator {
protected final FacetValueAccumulator parent;
protected final String facetName;
protected final String facetValue;
public QueryFacetAccumulator(FacetValueAccumulator parent, String facetName, String facetValue) {
this.parent = parent;
this.facetName = facetName;
this.facetValue = facetValue;
}
/**
* Tell the FacetingAccumulator to collect the doc with the
* given queryFacet and query.
*/
@Override
public void collect(int doc) throws IOException {
parent.collectQuery(doc, facetName, facetValue);
}
/**
* Update the readers of the queryFacet {@link StatsCollector}s in FacetingAccumulator
*/
@Override
protected void doSetNextReader(LeafReaderContext context) throws IOException {
parent.setQueryStatsCollectorReaders(context);
}
@Override
public void compute() {
// NOP
}
@Override
public NamedList<?> export() {
// NOP
return null;
}
@Override
public boolean needsScores() {
return true; // TODO: is this true?
}
}