René Voorburg created SOLR-9964:
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Summary: GeoJSONResponseWriter produces multiple
GeometryCollections
Key: SOLR-9964
URL: https://issues.apache.org/jira/browse/SOLR-9964
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: Response Writers, spatial
Affects Versions: 6.3
Environment: solr:latest in Docker for Mac (1.13.0-rc5-beta35 (14875))
Reporter: René Voorburg
Priority: Minor
When this SpatialRecursivePrefixTreeFieldType
"GEOMETRYCOLLECTION (POINT (5.184892 52.043278), MULTILINESTRING ((5.12150188
52.0912345, 5.12151772 52.091203, 5.12158176 52.0912144), (5.12154184
52.0900637, 5.121529 52.090092)))"
is retrieved using the GeoJSONRepsonseWriter JSON is returned that included
multiple GeometryCollections while only one GeometryCollection should have been
created.
The output I get is
{"type":"GeometryCollection","geometries":
[{"type":"Point","coordinates":[5.184892,52.043278]},{"type":"GeometryCollection","geometries":
[{"type":"LineString","coordinates":
[[5.121502,52.091234],[5.121518,52.091203],[5.121582,52.091214]]},{"type":"LineString","coordinates":
[[5.121542,52.090064],[5.121529,52.090092]]}]}]}
The expected output would be
{"type":"GeometryCollection","geometries":[{"type":"Point","coordinates":[5.184892,52.043278]},{"type":"MultiLineString","coordinates":[[[5.12150188,52.0912345],[5.12151772,52.091203],[5.12158176,52.0912144]],[[5.12154184,52.0900637],[5.121529,52.090092]]]}]}
or optionally
{"type":"GeometryCollection","geometries":
[{"type":"Point","coordinates":[5.184892,52.043278]},{"type":"LineString","coordinates":
[[5.121502,52.091234],[5.121518,52.091203],[5.121582,52.091214]]},{"type":"LineString","coordinates":
[[5.121542,52.090064],[5.121529,52.090092]]}]}
The most recent GeoJSON spec states:
"To maximize interoperability, implementations SHOULD avoid nested
GeometryCollections. " (https://tools.ietf.org/html/rfc7946)
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