org.elasticsearch.search.facet.range.ScriptRangeFacetExecutor Maven / Gradle / Ivy
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* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.search.facet.range;
import org.apache.lucene.index.AtomicReaderContext;
import org.apache.lucene.search.Scorer;
import org.elasticsearch.script.SearchScript;
import org.elasticsearch.search.facet.FacetExecutor;
import org.elasticsearch.search.facet.InternalFacet;
import org.elasticsearch.search.internal.SearchContext;
import java.io.IOException;
import java.util.Map;
/**
*
*/
public class ScriptRangeFacetExecutor extends FacetExecutor {
final SearchScript keyScript;
final SearchScript valueScript;
private final RangeFacet.Entry[] entries;
public ScriptRangeFacetExecutor(String scriptLang, String keyScript, String valueScript, Map params, RangeFacet.Entry[] entries, SearchContext context) {
this.keyScript = context.scriptService().search(context.lookup(), scriptLang, keyScript, params);
this.valueScript = context.scriptService().search(context.lookup(), scriptLang, valueScript, params);
this.entries = entries;
}
@Override
public Collector collector() {
return new Collector();
}
@Override
public InternalFacet buildFacet(String facetName) {
return new InternalRangeFacet(facetName, entries);
}
class Collector extends FacetExecutor.Collector {
@Override
public void setScorer(Scorer scorer) throws IOException {
keyScript.setScorer(scorer);
valueScript.setScorer(scorer);
}
@Override
public void setNextReader(AtomicReaderContext context) throws IOException {
keyScript.setNextReader(context);
valueScript.setNextReader(context);
}
@Override
public void collect(int doc) throws IOException {
keyScript.setNextDocId(doc);
valueScript.setNextDocId(doc);
double key = keyScript.runAsDouble();
double value = valueScript.runAsDouble();
for (RangeFacet.Entry entry : entries) {
if (key >= entry.getFrom() && key < entry.getTo()) {
entry.count++;
entry.totalCount++;
entry.total += value;
if (value < entry.min) {
entry.min = value;
}
if (value > entry.max) {
entry.max = value;
}
}
}
}
@Override
public void postCollection() {
}
}
}