Add GeoJSON export ...

src/com/esri/core/geometry/GeometryEngine.java

@@ -37,7 +37,9 @@ public class GeometryEngine {
 
 	private static OperatorFactoryLocal factory = OperatorFactoryLocal
 			.getInstance();
-
+
+
+
 	/**
 	 * Imports the MapGeometry from its JSON representation. M and Z values are
 	 * not imported from JSON representation.
@@ -88,6 +90,47 @@ public static String geometryToJson(SpatialReference spatialReference,
 		return exporter.execute(spatialReference, geometry);
 	}
 
+    public static String geometryToGeoJson(Geometry geometry) {
+        OperatorExportToGeoJson exporter = (OperatorExportToGeoJson) factory
+                .getOperator(Operator.Type.ExportToGeoJson);
+
+        return exporter.execute(geometry);
+    }
+
+    /**
+     * Exports the specified geometry instance to its GeoJSON representation.
+     *
+     * @see GeometryEngine#geometryToGeoJson(SpatialReference spatialReference,
+     *      Geometry geometry)
+     *
+     * @param wkid
+     *            The spatial reference Well Known ID to be used for the GeoJSON representation.
+     * @param geometry
+     *            The geometry to be exported to GeoJSON.
+     * @return The GeoJSON representation of the specified geometry.
+     */
+    public static String geometryToGeoJson(int wkid, Geometry geometry) {
+        return GeometryEngine.geometryToGeoJson(
+                wkid > 0 ? SpatialReference.create(wkid) : null, geometry);
+    }
+
+    /**
+     * Exports the specified geometry instance to it's JSON representation.
+     *
+     * @param spatialReference
+     *            The spatial reference of associated object.
+     * @param geometry
+     *            The geometry.
+     * @return The GeoJSON representation of the specified geometry.
+     */
+    public static String geometryToGeoJson(SpatialReference spatialReference,
+            Geometry geometry) {
+        OperatorExportToGeoJson exporter = (OperatorExportToGeoJson) factory
+                .getOperator(Operator.Type.ExportToGeoJson);
+
+        return exporter.execute(spatialReference, geometry);
+    }
+
 	/**
 	 * Imports geometry from the ESRI shape file format.
 	 * 
@@ -557,7 +600,8 @@ public static Geometry[] cut(Geometry cuttee, Polyline cutter,
 
 		return cutsList.toArray(new Geometry[0]);
 	}
-
+
+
 	/**
 	 * Calculates a buffer polygon for each geometry at each of the 
 	 * corresponding specified distances.  It is assumed that all geometries have
@@ -600,7 +644,8 @@ public static Polygon[] buffer(Geometry[] geometries,
 			return buffers;
 		}
 	}
-
+
+
 	/**
 	 * Calculates a buffer polygon of the geometry as specified by the 
 	 * distance input. The buffer is implemented in the xy-plane.
@@ -773,7 +818,8 @@ static boolean isSimple(Geometry geometry, SpatialReference spatialReference) {
 		boolean result = op.isSimpleAsFeature(geometry, spatialReference, null);
 		return result;
 	}
-
+
+
 	/**
 	 * A geodesic distance is the shortest distance between any two points on the earth's surface when the earth's
 	 * surface is approximated by a spheroid. The function returns the shortest distance between two points on the

src/com/esri/core/geometry/Operator.java

@@ -52,7 +52,7 @@ public enum Type {
 
 		Simplify, SimplifyOGC, Offset, Generalize,
 
-		ExportToWkb, ImportFromWkb, ExportToWkt, ImportFromWkt, ImportFromGeoJson, SymmetricDifference, ConvexHull, Boundary
+		ExportToWkb, ImportFromWkb, ExportToWkt, ImportFromWkt, ImportFromGeoJson, ExportToGeoJson, SymmetricDifference, ConvexHull, Boundary
 
 	}
 

src/com/esri/core/geometry/OperatorExportToGeoJson.java

@@ -0,0 +1,43 @@
+/*
+ Licensed 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.
+
+ For additional information, contact:
+ Environmental Systems Research Institute, Inc.
+ Attn: Contracts Dept
+ 380 New York Street
+ Redlands, California, USA 92373
+
+ email: contracts@esri.com
+ */
+
+package com.esri.core.geometry;
+
+import com.esri.core.geometry.Operator.Type;
+
+public abstract class OperatorExportToGeoJson extends Operator {
+    @Override
+    public Type getType() {
+        return Type.ExportToGeoJson;
+    }
+
+    abstract JsonCursor execute(SpatialReference spatialReference, GeometryCursor geometryCursor);
+
+    public abstract String execute(SpatialReference spatialReference, Geometry geometry);
+
+    public abstract String execute(Geometry geometry);
+
+    public static OperatorExportToGeoJson local() {
+        return (OperatorExportToGeoJson) OperatorFactoryLocal.getInstance()
+                .getOperator(Type.ExportToGeoJson);
+    }
+}