59 lines
1.9 KiB
Plaintext
59 lines
1.9 KiB
Plaintext
[[java-aggs-bucket-range]]
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==== Range Aggregation
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Here is how you can use
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{ref}/search-aggregations-bucket-range-aggregation.html[Range Aggregation]
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with Java API.
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===== Prepare aggregation request
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Here is an example on how to create the aggregation request:
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[source,java]
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--------------------------------------------------
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AggregationBuilder aggregation =
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AggregationBuilders
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.range("agg")
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.field("height")
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.addUnboundedTo(1.0f) // from -infinity to 1.0 (excluded)
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.addRange(1.0f, 1.5f) // from 1.0 to 1.5 (excluded)
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.addUnboundedFrom(1.5f); // from 1.5 to +infinity
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--------------------------------------------------
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===== Use aggregation response
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Import Aggregation definition classes:
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[source,java]
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--------------------------------------------------
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import org.elasticsearch.search.aggregations.bucket.range.Range;
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--------------------------------------------------
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[source,java]
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--------------------------------------------------
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// sr is here your SearchResponse object
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Range agg = sr.getAggregations().get("agg");
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// For each entry
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for (Range.Bucket entry : agg.getBuckets()) {
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String key = entry.getKey(); // Range as key
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Number from = (Number) entry.getFrom(); // Bucket from
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Number to = (Number) entry.getTo(); // Bucket to
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long docCount = entry.getDocCount(); // Doc count
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logger.info("key [{}], from [{}], to [{}], doc_count [{}]", key, from, to, docCount);
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}
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--------------------------------------------------
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This will basically produce for the first example:
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[source,text]
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--------------------------------------------------
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key [*-1.0], from [-Infinity], to [1.0], doc_count [9]
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key [1.0-1.5], from [1.0], to [1.5], doc_count [21]
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key [1.5-*], from [1.5], to [Infinity], doc_count [20]
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--------------------------------------------------
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