/*
* Copyright (c) 2015 Vincent Royer (vroyer@vroyer.org).
* Contains some code from Elasticsearch (http://www.elastic.co)
*
* Licensed 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.elassandra.shard.aggregations.bucket.token;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.search.aggregations.ValuesSourceAggregationBuilder;
import org.elasticsearch.search.builder.SearchSourceBuilderException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
*
*/
public abstract class AbstractRangeBuilder<B extends AbstractRangeBuilder<B>> extends ValuesSourceAggregationBuilder<B> {
protected static class Range implements ToXContent {
private String key;
private Object from;
private Object to;
public Range(String key, Object from, Object to) {
this.key = key;
this.from = from;
this.to = to;
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
if (key != null) {
builder.field("key", key);
}
if (from != null) {
builder.field("from", from);
}
if (to != null) {
builder.field("to", to);
}
return builder.endObject();
}
}
protected List<Range> ranges = new ArrayList<>();
protected AbstractRangeBuilder(String name, String type) {
super(name, type);
}
@Override
protected XContentBuilder doInternalXContent(XContentBuilder builder, Params params) throws IOException {
if (ranges.isEmpty()) {
throw new SearchSourceBuilderException("at least one range must be defined for range aggregation [" + getName() + "]");
}
builder.startArray("ranges");
for (Range range : ranges) {
range.toXContent(builder, params);
}
return builder.endArray();
}
}