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[Geotools-commits] svn - r38464 - trunk/modules/unsupported/mongodb/src/main/javascript
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From: <svn...@os...> - 2012-01-05 12:04:50
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Author: apm
Date: 2012-01-05 04:04:26 -0800 (Thu, 05 Jan 2012)
New Revision: 38464
Added:
trunk/modules/unsupported/mongodb/src/main/javascript/gtmpFuncs.js
Modified:
trunk/modules/unsupported/mongodb/src/main/javascript/INSTALL.txt
Log:
Added MongoDB server-side script for bounding box queries to modules/unsupported/mongodb
Modified: trunk/modules/unsupported/mongodb/src/main/javascript/INSTALL.txt
===================================================================
--- trunk/modules/unsupported/mongodb/src/main/javascript/INSTALL.txt 2012-01-05 05:33:48 UTC (rev 38463)
+++ trunk/modules/unsupported/mongodb/src/main/javascript/INSTALL.txt 2012-01-05 12:04:26 UTC (rev 38464)
@@ -1,6 +1,7 @@
-This directory contains a JavaScript file; MetaDataCompute.js; that need to be installed
-on the MongoDB database server as a stored JavaScript module.
+This directory contains two JavaScript files; MetaDataCompute.js and gtmpFuncs.js; that need to be installed
+on the MongoDB database server as stored JavaScript modules.
-Copy MetaDataCompute.js to your MongoDB server, then install it as follows:
+Copy both files to your MongoDB server, then install them as follows:
> mongo MetaDataCompute.js
-(Assumes "mongo" executable in path. The JavaScript file installs the necessary server-side scripts.)
+> mongo gtmpFuncs.js
+(Assumes "mongo" executable in path. The JavaScript files install the necessary server-side scripts.)
Added: trunk/modules/unsupported/mongodb/src/main/javascript/gtmpFuncs.js
===================================================================
--- trunk/modules/unsupported/mongodb/src/main/javascript/gtmpFuncs.js (rev 0)
+++ trunk/modules/unsupported/mongodb/src/main/javascript/gtmpFuncs.js 2012-01-05 12:04:26 UTC (rev 38464)
@@ -0,0 +1,128 @@
+/** support for bounding box queries
+
+ * @author David Boyd, Data Tactics Corp.
+ *
+ * Copyright 2011 GeoTools
+ *
+ * @see The GNU Lesser General Public License (LGPL)
+*/
+/*This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General
+ * Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option)
+ * any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
+
+// Simple point in Bounding box function.
+// boundingbox is of the form float[4] = [Left Longitude, Bottom Latitude,
+// Right Longitude, Top Latitued ]
+// point isof the form float[2]= [longitude, latitude ]
+var gtmpPointInBBOX = { _id : "gtmpPointInBBOX", value : function(bbox, point) {
+
+ var leftLongitude = bbox[0];
+ var bottomLatitude = bbox[1];
+ var rightLongitude = bbox[2];
+ var topLatitude = bbox[3];
+ var tLongitude = point[0];
+ var tLatitude = point[1];
+
+ // For the bounding box assume that when box crosses
+ // the 180 longitude that it will be the smaller of the
+ // defined box queried.
+
+ //checks to see if bounding box crosses 180 degrees
+ var boxcase = 0;
+ if (leftLongitude < 0) {
+ if (rightLongitude < 0) {
+ boxcase = 3;
+ } else {
+ boxcase = 2;
+ }
+ } else {
+ boxcase = 1;
+ }
+
+ var inX = false;
+ switch (boxcase) {
+ case 1:
+ if ((tLongitude >= leftLongitude) &&
+ (tLongitude <= rightLongitude))
+ inX = true;
+ else
+ inX = false;
+ break;
+ case 2:
+ var normLongitude = 360.0 + leftLongitude;
+ if ((tLongitude >= normLongitude) &&
+ (tLongitude <= rightLongitude))
+ inX = true;
+ else
+ inX = false;
+ break;
+ case 3:
+ if ((tLongitude >= leftLongitude) &&
+ (tLongitude <= rightLongitude))
+ inX = true;
+ else
+ inX = false;
+ break;
+ }
+ if (!inX)
+ return false;
+
+ // Now test the Latitude
+ if ((tLatitude >= bottomLatitude) &&
+ (tLatitude <= topLatitude))
+ return true;
+
+ return false;
+ }
+}
+
+// Simple bounding box intersection test
+// Both boxes are of the form: float[4] = [Left Longitude, Bottom Latitude,
+// Right Longitude, Top Latitued ]
+var gtmpBBoxIntersect = { _id: "gtmpBBoxIntersect", value: function(bbox1, bbox2) {
+ var AminX = bbox1[0];
+ var AminY = bbox1[1];
+ var AmaxX = bbox1[2];
+ var AmaxY = bbox1[3];
+
+ var BminX = bbox2[0];
+ var BminY = bbox2[1];
+ var BmaxX = bbox2[2];
+ var BmaxY = bbox2[3];
+
+ if ((AmaxX < BminX) || (AminX > BmaxX) ||
+ (AmaxY < BminY) || (AminY > BmaxY)) {
+ return false;
+ }
+
+ return true;
+ }
+}
+
+var gtmpGeoQuery = { _id : 'gtmpGeoQuery', value: function(bbox) {
+ if (!obj.geometry) return false;
+ if (obj.geometry.type == 'Point') {
+ return gtmpPointInBBOX(bbox, obj.geometry.coordinates);
+ }
+ if (obj.geometry.type == 'Polygon') {
+ return gtmpBBoxIntersect(bbox, obj.bbox);
+ }
+ return false;
+ }
+}
+
+db.system.js.remove('gtmpPointInBBOX');
+db.system.js.remove('gtmpBBoxIntersect');
+db.system.js.remove('gtmpGeoQuery');
+db.system.js.save(gtmpPointInBBOX);
+db.system.js.save(gtmpBBoxIntersect);
+db.system.js.save(gtmpGeoQuery);
+
+exit
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