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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.fetch.subphase;
import org.apache.lucene.search.FieldDoc;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TopDocs;
import org.elasticsearch.ExceptionsHelper;
import org.elasticsearch.search.fetch.FetchPhase;
import org.elasticsearch.search.fetch.FetchSearchResult;
import org.elasticsearch.search.fetch.FetchSubPhase;
import org.elasticsearch.search.internal.InternalSearchHit;
import org.elasticsearch.search.internal.InternalSearchHits;
import org.elasticsearch.search.internal.SearchContext;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
public final class InnerHitsFetchSubPhase implements FetchSubPhase {
private final FetchPhase fetchPhase;
public InnerHitsFetchSubPhase(FetchPhase fetchPhase) {
this.fetchPhase = fetchPhase;
}
@Override
public void hitExecute(SearchContext context, HitContext hitContext) {
if ((context.innerHits() != null && context.innerHits().getInnerHits().size() > 0) == false) {
return;
}
Map<String, InternalSearchHits> results = new HashMap<>();
for (Map.Entry<String, InnerHitsContext.BaseInnerHits> entry : context.innerHits().getInnerHits().entrySet()) {
InnerHitsContext.BaseInnerHits innerHits = entry.getValue();
TopDocs topDocs;
try {
topDocs = innerHits.topDocs(context, hitContext);
} catch (IOException e) {
throw ExceptionsHelper.convertToElastic(e);
}
innerHits.queryResult().topDocs(topDocs, innerHits.sort() == null ? null : innerHits.sort().formats);
int[] docIdsToLoad = new int[topDocs.scoreDocs.length];
for (int i = 0; i < topDocs.scoreDocs.length; i++) {
docIdsToLoad[i] = topDocs.scoreDocs[i].doc;
}
innerHits.docIdsToLoad(docIdsToLoad, 0, docIdsToLoad.length);
fetchPhase.execute(innerHits);
FetchSearchResult fetchResult = innerHits.fetchResult();
InternalSearchHit[] internalHits = fetchResult.fetchResult().hits().internalHits();
for (int i = 0; i < internalHits.length; i++) {
ScoreDoc scoreDoc = topDocs.scoreDocs[i];
InternalSearchHit searchHitFields = internalHits[i];
searchHitFields.score(scoreDoc.score);
if (scoreDoc instanceof FieldDoc) {
FieldDoc fieldDoc = (FieldDoc) scoreDoc;
searchHitFields.sortValues(fieldDoc.fields, innerHits.sort().formats);
}
}
results.put(entry.getKey(), fetchResult.hits());
}
hitContext.hit().setInnerHits(results);
}
}
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