org.elasticsearch.search.fetch.partial.PartialFieldsFetchSubPhase Maven / Gradle / Ivy
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* 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
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* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.search.fetch.partial;
import com.google.common.collect.ImmutableMap;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.search.SearchHitField;
import org.elasticsearch.search.SearchParseElement;
import org.elasticsearch.search.fetch.FetchSubPhase;
import org.elasticsearch.search.internal.InternalSearchHit;
import org.elasticsearch.search.internal.InternalSearchHitField;
import org.elasticsearch.search.internal.SearchContext;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
/**
*/
public class PartialFieldsFetchSubPhase implements FetchSubPhase {
@Inject
public PartialFieldsFetchSubPhase() {
}
@Override
public Map parseElements() {
ImmutableMap.Builder parseElements = ImmutableMap.builder();
parseElements.put("partial_fields", new PartialFieldsParseElement())
.put("partialFields", new PartialFieldsParseElement());
return parseElements.build();
}
@Override
public boolean hitsExecutionNeeded(SearchContext context) {
return false;
}
@Override
public void hitsExecute(SearchContext context, InternalSearchHit[] hits) throws ElasticsearchException {
}
@Override
public boolean hitExecutionNeeded(SearchContext context) {
return context.hasPartialFields();
}
@Override
public void hitExecute(SearchContext context, HitContext hitContext) throws ElasticsearchException {
for (PartialFieldsContext.PartialField field : context.partialFields().fields()) {
Object value = context.lookup().source().filter(field.includes(), field.excludes());
if (hitContext.hit().fieldsOrNull() == null) {
hitContext.hit().fields(new HashMap(2));
}
SearchHitField hitField = hitContext.hit().fields().get(field.name());
if (hitField == null) {
hitField = new InternalSearchHitField(field.name(), new ArrayList