Support geo label position as runtime field #86154
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iverase
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May 5, 2022
server/src/main/java/org/elasticsearch/script/field/GeoPointDocValuesField.java
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We simplified this to always use the middle of the first tree geometry. The use of the centroid can be done higher up in the stack. For painless, this means in the user written script. For the REST API we will add that logic on the server side.
Now that we no longer use the centroid for polygon labels, but the middle of the first triangle.
This time without rounding error
And more tests, including testing intersects for all label positions.
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iverase
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May 6, 2022
...main/java/org/elasticsearch/xpack/spatial/index/mapper/GeoShapeWithDocValuesFieldMapper.java
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The centroid is unlikely to be one of the points, so we choose a point closest to the middle of the bounding box.
The changes to expose GeoShapeQueryable.toQuantizeLuceneGeometry to external use also caused exception causes to be one level deeper. This fix just brings the underlying message up one level to get tests to pass. While we could have also changed tests to assert on causes a level deeper, this fix seems more backwards compatible, just in case anyone else is relying on causes.
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stu-elastic
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May 9, 2022
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There is a need to provide sensibly calculated label positions for polygons and lines in Kibana maps (as requested in #86044). A very convenient way of satisfy this need is through a runtime field that the rest API can make use of when labels are requested. This has the advantage of providing painless access to the label position as well. This PR provides the runtime field.