CSE 512 Naive Spatial Join Query.java

1.Create a PointRDD objectRDD;
2.Create a RectangleRDD queryWindowRDD;
3.Collect rectangles from queryWindowRDD to one Java List L;
4. For each rectangle R in L
    do RangeQuery.SpatialRangeQuery(objectRDD, queryEnvelope, 0);
   End;
5.Collect all results; //"Collect" is a standard function under SparkContext.
6.Parallelize the results to generate a RDD in this format: JavaPairRDD<Envelope, HashSet<Point>>.;//"Parallelize" is a standard function under SparkContext.
7.Return the result RDD;