commit | ec4e00f66178adfbc98f0199c405f3c2ef62bcd8 | [log] [tgz] |
---|---|---|
author | Jenkins <jenkins@grundid.de> | Mon Feb 09 15:27:40 2015 +0100 |
committer | Jenkins <jenkins@grundid.de> | Mon Feb 09 15:27:40 2015 +0100 |
tree | 21ebf90931e750a285b788a120a8ee6c890e382e | |
parent | 65ba54e5b0a47ca9137711ede9128f07884e5ffe [diff] |
[maven-release-plugin] prepare for next development iteration
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>1.3</version> </dependency>