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GeoJSONs cannot be read when the properties are ordered differently than expected #227
Description
For example, reading this GeoJSON results in a NullPointerException:
{"coordinates":[[[1,0.01],[1,-0.01],[2,-0.02],[3,-0.01],[3,0.01],[1,0.01]]],"type":"Polygon"}
This might not be desirable behaviour, since JSON objects are unordered collections afaik and some JSON parsers do not preserve the order of the properties when serializing/deserializing, but instead order them alphabetically, for example.
It also sounds like this is not intended by the standard (https://www.rfc-editor.org/rfc/rfc7946#section-1.2):
"The ordering of the members of any JSON object defined in this
document MUST be considered irrelevant, as specified by [RFC7159]."
Activity
dsmiley commentedon Jan 13, 2023
Can you share the NPE stack trace please?
At least Spatial4J has multiple options for GeoJSON reading. I recall JTS has one as well, and off the top of my head I think it's exposed as a first class thing in Spatial4J. I'm certain there is a WKT option at least (not helpful to you I know).
henleo commentedon Jan 14, 2023
java.lang.NullPointerException
at org.locationtech.spatial4j.io.GeoJSONReader.readShapeFromCoordinates(GeoJSONReader.java:300)
at org.locationtech.spatial4j.io.GeoJSONReader.readShape(GeoJSONReader.java:248)
at org.locationtech.spatial4j.io.GeoJSONReader.read(GeoJSONReader.java:48)
at org.locationtech.spatial4j.io.GeoJSONReader.read(GeoJSONReader.java:54)
at com.example.App.main(App.java:29)
No worries, I just ordered my JSONs. Just thought you might want to know.