org.elasticsearch.search.fetch.innerhits.InnerHitsFetchSubPhase Maven / Gradle / Ivy
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* the Apache License, Version 2.0 (the "License"); you may
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* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
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package org.elasticsearch.search.fetch.innerhits;
import com.google.common.collect.ImmutableMap;
import org.apache.lucene.search.FieldDoc;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TopDocs;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.ExceptionsHelper;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.search.SearchParseElement;
import org.elasticsearch.search.fetch.FetchPhase;
import org.elasticsearch.search.fetch.FetchSearchResult;
import org.elasticsearch.search.fetch.FetchSubPhase;
import org.elasticsearch.search.fetch.fielddata.FieldDataFieldsParseElement;
import org.elasticsearch.search.fetch.script.ScriptFieldsParseElement;
import org.elasticsearch.search.fetch.source.FetchSourceParseElement;
import org.elasticsearch.search.highlight.HighlighterParseElement;
import org.elasticsearch.search.internal.InternalSearchHit;
import org.elasticsearch.search.internal.InternalSearchHits;
import org.elasticsearch.search.internal.SearchContext;
import org.elasticsearch.search.sort.SortParseElement;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
/**
*/
public class InnerHitsFetchSubPhase implements FetchSubPhase {
private final SortParseElement sortParseElement;
private final FetchSourceParseElement sourceParseElement;
private final HighlighterParseElement highlighterParseElement;
private final FieldDataFieldsParseElement fieldDataFieldsParseElement;
private final ScriptFieldsParseElement scriptFieldsParseElement;
private FetchPhase fetchPhase;
@Inject
public InnerHitsFetchSubPhase(SortParseElement sortParseElement, FetchSourceParseElement sourceParseElement, HighlighterParseElement highlighterParseElement, FieldDataFieldsParseElement fieldDataFieldsParseElement, ScriptFieldsParseElement scriptFieldsParseElement) {
this.sortParseElement = sortParseElement;
this.sourceParseElement = sourceParseElement;
this.highlighterParseElement = highlighterParseElement;
this.fieldDataFieldsParseElement = fieldDataFieldsParseElement;
this.scriptFieldsParseElement = scriptFieldsParseElement;
}
@Override
public Map parseElements() {
return ImmutableMap.of("inner_hits", new InnerHitsParseElement(
sortParseElement, sourceParseElement, highlighterParseElement, fieldDataFieldsParseElement, scriptFieldsParseElement
));
}
@Override
public boolean hitExecutionNeeded(SearchContext context) {
return context.innerHits() != null && context.innerHits().getInnerHits().size() > 0;
}
@Override
public void hitExecute(SearchContext context, HitContext hitContext) {
Map results = new HashMap<>();
for (Map.Entry 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);
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.shard(innerHits.shardTarget());
searchHitFields.score(scoreDoc.score);
if (scoreDoc instanceof FieldDoc) {
FieldDoc fieldDoc = (FieldDoc) scoreDoc;
searchHitFields.sortValues(fieldDoc.fields);
}
}
results.put(entry.getKey(), fetchResult.hits());
}
hitContext.hit().setInnerHits(results);
}
@Override
public boolean hitsExecutionNeeded(SearchContext context) {
return false;
}
@Override
public void hitsExecute(SearchContext context, InternalSearchHit[] hits) {
}
// To get around cyclic dependency issue
public void setFetchPhase(FetchPhase fetchPhase) {
this.fetchPhase = fetchPhase;
}
}