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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.action.suggest;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.broadcast.BroadcastOperationRequestBuilder;
import org.elasticsearch.client.Client;
import org.elasticsearch.client.Requests;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.search.suggest.SuggestBuilder;
import org.elasticsearch.search.suggest.SuggestBuilder.SuggestionBuilder;
import java.io.IOException;
/**
* A suggest action request builder.
*/
public class SuggestRequestBuilder extends BroadcastOperationRequestBuilder<SuggestRequest, SuggestResponse, SuggestRequestBuilder , Client> {
final SuggestBuilder suggest = new SuggestBuilder();
public SuggestRequestBuilder(Client client) {
super(client, new SuggestRequest());
}
/**
* Add a definition for suggestions to the request
*/
public <T> SuggestRequestBuilder addSuggestion(SuggestionBuilder<T> suggestion) {
suggest.addSuggestion(suggestion);
return this;
}
/**
* A comma separated list of routing values to control the shards the search will be executed on.
*/
public SuggestRequestBuilder setRouting(String routing) {
request.routing(routing);
return this;
}
public SuggestRequestBuilder setSuggestText(String globalText) {
this.suggest.setText(globalText);
return this;
}
/**
* Sets the preference to execute the search. Defaults to randomize across shards. Can be set to
* <tt>_local</tt> to prefer local shards, <tt>_primary</tt> to execute only on primary shards,
* _shards:x,y to operate on shards x & y, or a custom value, which guarantees that the same order
* will be used across different requests.
*/
public SuggestRequestBuilder setPreference(String preference) {
request.preference(preference);
return this;
}
/**
* The routing values to control the shards that the search will be executed on.
*/
public SuggestRequestBuilder setRouting(String... routing) {
request.routing(routing);
return this;
}
@Override
protected void doExecute(ActionListener<SuggestResponse> listener) {
try {
XContentBuilder builder = XContentFactory.contentBuilder(Requests.CONTENT_TYPE);
suggest.toXContent(builder, ToXContent.EMPTY_PARAMS);
request.suggest(builder.bytes());
} catch (IOException e) {
throw new ElasticsearchException("Unable to build suggestion request", e);
}
client.suggest(request, listener);
}
}