Github user smarthi commented on a diff in the pull request:
https://github.com/apache/incubator-streams/pull/313#discussion_r84584515
--- Diff:
streams-contrib/streams-provider-twitter/src/main/java/org/apache/streams/twitter/converter/util/TwitterActivityUtil.java
---
@@ -350,4 +351,26 @@ public static void addTwitterExtensions(Activity
activity, Tweet tweet) {
extensions.put("keywords", tweet.getText());
}
+
+ /**
+ * Compute central coordinates from bounding box
+ * @param place the bounding box to use as the source
+ */
+ public static List<Double> boundingBoxCenter(Place place) {
+ if( place == null ) return new ArrayList<>();
+ if( place.getBoundingBox() == null ) return new ArrayList<>();
+ if( place.getBoundingBox().getCoordinates().size() != 1 ) return
new ArrayList<>();
+ if( place.getBoundingBox().getCoordinates().get(0).size() != 4 )
return new ArrayList<>();
+ List<Double> lats = Lists.newArrayList();
+ List<Double> lons = Lists.newArrayList();
+ for( List<Double> point :
place.getBoundingBox().getCoordinates().get(0)) {
+ lats.add(point.get(0));
+ lons.add(point.get(1));
+ }
+ List<Double> result = new ArrayList<Double>();
--- End diff --
the RHS can just be 'new ArrayList<>();' -> Java 7
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