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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.search.aggregations.bucket.range;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.xcontent.ObjectParser;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.index.query.QueryParseContext;
import org.elasticsearch.search.aggregations.AggregationBuilder;
import org.elasticsearch.search.aggregations.AggregatorFactories.Builder;
import org.elasticsearch.search.aggregations.AggregatorFactory;
import org.elasticsearch.search.aggregations.bucket.range.RangeAggregator.Range;
import org.elasticsearch.search.aggregations.support.ValuesSource.Numeric;
import org.elasticsearch.search.aggregations.support.ValuesSourceConfig;
import org.elasticsearch.search.aggregations.support.ValuesSourceParserHelper;
import org.elasticsearch.search.internal.SearchContext;
import java.io.IOException;
public class RangeAggregationBuilder extends AbstractRangeBuilder<RangeAggregationBuilder, Range> {
public static final String NAME = "range";
private static final ObjectParser<RangeAggregationBuilder, QueryParseContext> PARSER;
static {
PARSER = new ObjectParser<>(RangeAggregationBuilder.NAME);
ValuesSourceParserHelper.declareNumericFields(PARSER, true, true, false);
PARSER.declareBoolean(RangeAggregationBuilder::keyed, RangeAggregator.KEYED_FIELD);
PARSER.declareObjectArray((agg, ranges) -> {
for (Range range : ranges) {
agg.addRange(range);
}
}, RangeAggregationBuilder::parseRange, RangeAggregator.RANGES_FIELD);
}
public static AggregationBuilder parse(String aggregationName, QueryParseContext context) throws IOException {
return PARSER.parse(context.parser(), new RangeAggregationBuilder(aggregationName), context);
}
private static Range parseRange(XContentParser parser, QueryParseContext context) throws IOException {
return Range.fromXContent(parser);
}
public RangeAggregationBuilder(String name) {
super(name, InternalRange.FACTORY);
}
/**
* Read from a stream.
*/
public RangeAggregationBuilder(StreamInput in) throws IOException {
super(in, InternalRange.FACTORY, Range::new);
}
/**
* Add a new range to this aggregation.
*
* @param key
* the key to use for this range in the response
* @param from
* the lower bound on the distances, inclusive
* @param to
* the upper bound on the distances, exclusive
*/
public RangeAggregationBuilder addRange(String key, double from, double to) {
addRange(new Range(key, from, to));
return this;
}
/**
* Same as {@link #addRange(String, double, double)} but the key will be
* automatically generated based on <code>from</code> and
* <code>to</code>.
*/
public RangeAggregationBuilder addRange(double from, double to) {
return addRange(null, from, to);
}
/**
* Add a new range with no lower bound.
*
* @param key
* the key to use for this range in the response
* @param to
* the upper bound on the distances, exclusive
*/
public RangeAggregationBuilder addUnboundedTo(String key, double to) {
addRange(new Range(key, null, to));
return this;
}
/**
* Same as {@link #addUnboundedTo(String, double)} but the key will be
* computed automatically.
*/
public RangeAggregationBuilder addUnboundedTo(double to) {
return addUnboundedTo(null, to);
}
/**
* Add a new range with no upper bound.
*
* @param key
* the key to use for this range in the response
* @param from
* the lower bound on the distances, inclusive
*/
public RangeAggregationBuilder addUnboundedFrom(String key, double from) {
addRange(new Range(key, from, null));
return this;
}
/**
* Same as {@link #addUnboundedFrom(String, double)} but the key will be
* computed automatically.
*/
public RangeAggregationBuilder addUnboundedFrom(double from) {
return addUnboundedFrom(null, from);
}
@Override
protected RangeAggregatorFactory innerBuild(SearchContext context, ValuesSourceConfig<Numeric> config,
AggregatorFactory<?> parent, Builder subFactoriesBuilder) throws IOException {
// We need to call processRanges here so they are parsed before we make the decision of whether to cache the request
Range[] ranges = processRanges(context, config);
if (ranges.length == 0) {
throw new IllegalArgumentException("No [ranges] specified for the [" + this.getName() + "] aggregation");
}
return new RangeAggregatorFactory(name, config, ranges, keyed, rangeFactory, context, parent, subFactoriesBuilder,
metaData);
}
@Override
public String getType() {
return NAME;
}
}
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