commit | f0861752f6ced47f33db3ccac54bf3ac39e121f3 | [log] [tgz] |
---|---|---|
author | Android Build Coastguard Worker <android-build-coastguard-worker@google.com> | Tue Dec 07 11:06:31 2021 +0000 |
committer | Android Build Coastguard Worker <android-build-coastguard-worker@google.com> | Tue Dec 07 11:06:31 2021 +0000 |
tree | df4b69f514e76000986d5966d8d28c766b1f3a43 | |
parent | 484b3b00aada60909c119e35ac22c420685e1d1c [diff] | |
parent | 31c382520b511b06161053a997f4b3d6917db5ac [diff] |
Snap for 7975778 from 31c382520b511b06161053a997f4b3d6917db5ac to t-keystone-qcom-release Change-Id: I1abd67bce1a955653de3d68bb9d560729501050a
A small package of all GeoJson POJOs (Plain Old Java Objects) for serializing and deserializing of objects via JSON Jackson Parser.
If you know what kind of object you expect from a GeoJson file you can directly read it like this:
FeatureCollection featureCollection = new ObjectMapper().readValue(inputStream, FeatureCollection.class);
If you want to read any GeoJson file read the value as GeoJsonObject and then test for the contents via instanceOf:
GeoJsonObject object = new ObjectMapper().readValue(inputStream, GeoJsonObject.class); if (object instanceof Polygon) { ... } else if (object instanceof Feature) { ... }
and so on.
Or you can use the GeoJsonObjectVisitor to visit the right method:
GeoJsonObject object = new ObjectMapper().readValue(inputStream, GeoJsonObject.class); object.accept(visitor);
Writing Json is even easier. You just have to create the GeoJson objects and pass them to the Jackson ObjectMapper.
FeatureCollection featureCollection = new FeatureCollection(); featureCollection.add(new Feature()); String json= new ObjectMapper().writeValueAsString(featureCollection);
You can find the library in the Maven Central Repository.
<dependency> <groupId>de.grundid.opendatalab</groupId> <artifactId>geojson-jackson</artifactId> <version>1.8.1</version> </dependency>