geo/JTS.java

   1 package org.argeo.app.geo;
   2
   3 import org.argeo.api.cms.CmsLog;
   4 import org.locationtech.jts.geom.GeometryFactory;
   5 import org.locationtech.jts.geom.PrecisionModel;
   6
   7 /**
   8  * Factories initialisation and workarounds for the JTS library. The idea is to
   9  * code defensively around factory initialisation, API changes, and issues
  10  * related to running in an OSGi environment. Rather see {@link GeoUtils} for
  11  * functional static utilities.
  12  */
  13 public class JTS {
  14         private final static CmsLog log = CmsLog.getLog(JTS.class);
  15
  16         public final static int WGS84_SRID = 4326;
  17
  18         /** A geometry factory with no SRID specified */
  19         public final static GeometryFactory GEOMETRY_FACTORY;
  20         /** A geometry factory with SRID 4326 (WGS84 in the EPSG database) */
  21         public final static GeometryFactory GEOMETRY_FACTORY_WGS84;
  22
  23         static {
  24                 try {
  25                         GEOMETRY_FACTORY = new GeometryFactory();
  26                         GEOMETRY_FACTORY_WGS84 = new GeometryFactory(new PrecisionModel(), WGS84_SRID);
  27                 } catch (RuntimeException e) {
  28                         log.error("Basic JTS initialisation failed, geographical utilities are probably not available", e);
  29                         throw e;
  30                 }
  31         }
  32
  33 }