commit | 06a8fefae8c62e5a7a27b120228b8a2a5bc6adb8 | [log] [tgz] |
---|---|---|
author | Theron LaBounty <theron@uber.com> | Fri Mar 11 11:20:45 2016 -0700 |
committer | Theron LaBounty <theron@uber.com> | Fri Mar 11 11:20:45 2016 -0700 |
tree | e7bd0eae7ba2c9d81a5380dfa6c89feecae37fac | |
parent | c1f3b57a12e9e53b3a05db502a27e7963eef2067 [diff] |
Added exceptions for NaN altitude with additional elements.
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 what 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>1.5.1</version> </dependency>