Improve and clean up geo utilities.

[gpl/argeo-suite.git] / org.argeo.app.geo / src / org / argeo / app / geo / GeoTools.java

diff --git a/org.argeo.app.geo/src/org/argeo/app/geo/GeoTools.java b/org.argeo.app.geo/src/org/argeo/app/geo/GeoTools.java
new file mode 100644 (file)
index 0000000..166c686
--- /dev/null
+++ b/org.argeo.app.geo/src/org/argeo/app/geo/GeoTools.java
@@ -0,0 +1,34 @@
+package org.argeo.app.geo;
+
+import org.argeo.api.cms.CmsLog;
+import org.geotools.factory.CommonFactoryFinder;
+import org.geotools.geometry.jts.JTSFactoryFinder;
+import org.geotools.styling.StyleFactory;
+import org.locationtech.jts.geom.GeometryFactory;
+import org.opengis.filter.FilterFactory2;
+
+/**
+ * Factories initialisation and workarounds for the GeoTools library. The idea
+ * is to code defensively around factory initialisation, API changes, and issues
+ * related to running in an OSGi environment. Rather see {@link GeoUtils} for
+ * functional static utilities.
+ */
+public class GeoTools {
+       private final static CmsLog log = CmsLog.getLog(GeoTools.class);
+
+       public final static GeometryFactory GEOMETRY_FACTORY;
+       public final static StyleFactory STYLE_FACTORY;
+       public final static FilterFactory2 FILTER_FACTORY;
+
+       static {
+               try {
+                       GEOMETRY_FACTORY = JTSFactoryFinder.getGeometryFactory();
+                       STYLE_FACTORY = CommonFactoryFinder.getStyleFactory();
+                       FILTER_FACTORY = CommonFactoryFinder.getFilterFactory2();
+               } catch (RuntimeException e) {
+                       log.error("Basic GeoTools initialisation failed, geographical utilities are probably not available", e);
+                       throw e;
+               }
+       }
+
+}