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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.index.search.morelikethis;
import org.apache.lucene.index.Fields;
import org.elasticsearch.action.get.MultiGetRequest;
import org.elasticsearch.action.termvector.MultiTermVectorsItemResponse;
import org.elasticsearch.action.termvector.MultiTermVectorsRequest;
import org.elasticsearch.action.termvector.MultiTermVectorsResponse;
import org.elasticsearch.action.termvector.TermVectorResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.settings.Settings;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
*
*/
public class MoreLikeThisFetchService extends AbstractComponent {
private final Client client;
@Inject
public MoreLikeThisFetchService(Client client, Settings settings) {
super(settings);
this.client = client;
}
public Fields[] fetch(MultiTermVectorsRequest request) throws IOException {
List<Fields> likeFields = new ArrayList<>();
MultiTermVectorsResponse responses = client.multiTermVectors(request).actionGet();
for (MultiTermVectorsItemResponse response : responses) {
if (response.isFailed()) {
continue;
}
TermVectorResponse getResponse = response.getResponse();
if (!getResponse.isExists()) {
continue;
}
likeFields.add(getResponse.getFields());
}
return likeFields.toArray(Fields.EMPTY_ARRAY);
}
}