MarvinLitt commented on a change in pull request #3481: [CARBONDATA-3548]Geospatial Support： add hash id create，query condition analyze and generate hash id list
URL:
https://github.com/apache/carbondata/pull/3481#discussion_r357043723
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File path: geo/src/main/java/org/apache/carbondata/geo/QuadTreeCls.java
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@@ -0,0 +1,904 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ *
http://www.apache.org/licenses/LICENSE-2.0+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.carbondata.geo;
+
+import java.awt.geom.Point2D;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.List;
+
+import org.apache.carbondata.common.logging.LogServiceFactory;
+
+import org.apache.log4j.Logger;
+
+import org.locationtech.jts.geom.Coordinate;
+import org.locationtech.jts.geom.Geometry;
+import org.locationtech.jts.geom.GeometryFactory;
+import org.locationtech.jts.geom.Point;
+import org.locationtech.jts.geom.Polygon;
+
+
+
+/**
+ * Spatial region function processing related classes
+ */
+class GeometryOperation {
+ private static final GeometryFactory geoFactory = new GeometryFactory();
+
+ /**
+ * Convert point object to polygon object in Geo
+ *
+ * @param polygon Area coordinates stored as a list
+ * @return JTS Polygon objects
+ */
+ public static Polygon getPolygonByPointList(List<Point2D.Double> polygon) {
+ int size = polygon.size();
+ if (size < 3) {
+ return null;
+ } else {
+ Coordinate[] rect = new Coordinate[size + 1];
+ for (int i = 0; i < size; i++) {
+ rect[i] = new Coordinate(polygon.get(i).x, polygon.get(i).y);
+ }
+ rect[size] = new Coordinate(polygon.get(0).x, polygon.get(0).y);
+ return geoFactory.createPolygon(rect);
+ }
+ }
+
+ /**
+ * Convert point object to polygon object in Geo
+ * @param polygon Area coordinates stored as a list
+ * @return JTS Polygon objects
+ */
+ public static Polygon getPolygonByDoubleList(List<double[]> polygon) {
+ int size = polygon.size();
+ if (size < 3) {
+ return null;
+ } else {
+ Coordinate[] rect = new Coordinate[size + 1];
+ for (int i = 0; i < size; i++) {
+ rect[i] = new Coordinate(polygon.get(i)[0], polygon.get(i)[1]);
+ }
+ double x = polygon.get(0)[0];
+ double y = polygon.get(0)[1];
+ rect[size] = new Coordinate(x, y);
+ return geoFactory.createPolygon(rect);
+ }
+ }
+
+ /**
+ * Converting point objects to point objects in Geo
+ * @param pointB Point2D Point object
+ * @return JTS Point object
+ */
+ public static Point getPointByPoint2D(Point2D.Double pointB) {
+ Coordinate point = new Coordinate(pointB.x, pointB.y);
+ return geoFactory.createPoint(point);
+ }
+
+
Review comment:
done
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