61 lines
1.9 KiB
Plaintext
61 lines
1.9 KiB
Plaintext
[[java-aggs-bucket-geodistance]]
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==== Geo Distance Aggregation
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Here is how you can use
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{ref}/search-aggregations-bucket-geodistance-aggregation.html[Geo Distance 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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.geoDistance("agg")
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.field("address.location")
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.point(new GeoPoint(48.84237171118314,2.33320027692004))
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.unit(DistanceUnit.KILOMETERS)
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.addUnboundedTo(3.0)
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.addRange(3.0, 10.0)
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.addRange(10.0, 500.0);
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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(); // key as String
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Number from = (Number) entry.getFrom(); // bucket from value
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Number to = (Number) entry.getTo(); // bucket to value
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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:
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[source,text]
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--------------------------------------------------
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key [*-3.0], from [0.0], to [3.0], doc_count [161]
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key [3.0-10.0], from [3.0], to [10.0], doc_count [460]
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key [10.0-500.0], from [10.0], to [500.0], doc_count [4925]
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--------------------------------------------------
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