--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/AreaFacet.java	Fri Dec 16 14:02:59 2011 +0000
@@ -0,0 +1,90 @@
+package de.intevation.flys.artifacts.model;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+
+import de.intevation.artifacts.Artifact;
+import de.intevation.artifacts.CallContext;
+
+import de.intevation.artifactdatabase.state.DefaultFacet;
+import de.intevation.artifactdatabase.state.Facet;
+
+import de.intevation.artifacts.DataProvider;
+
+import de.intevation.flys.artifacts.AreaArtifact;
+
+import de.intevation.flys.artifacts.states.DefaultState.ComputeType;
+import de.intevation.flys.artifacts.states.DefaultState.ComputeType;
+
+
+/**
+ * Trival Facet for areas.
+ */
+public class AreaFacet
+extends      DefaultFacet
+implements   FacetTypes {
+
+    private static Logger logger = Logger.getLogger(AreaFacet.class);
+
+    /** Trivial constructor, set (maybe localized) description. */
+    public AreaFacet(int idx, String description) {
+        super(idx, AREA, description);
+    }
+
+
+    /**
+     * Gets Cross Section (profile).
+     * @param art artifact to get data from.
+     * @param context ignored
+     */
+    public Object getData(Artifact art, CallContext context) {
+        logger.debug("Get data for area ding");
+
+        // Get information from artifact about which
+        // info to grab from blackboard.
+        //
+        // All compatible facets should provide their data
+        // under the key (Artifact-UUID + Facet-Index).
+        AreaArtifact artifact = (AreaArtifact) art;
+        Object lowerData      = null;
+        Object upperData      = null;
+
+        List<DataProvider> providers = context.
+            getDataProvider(artifact.getLowerDPKey());
+        if (providers.size() < 1) {
+            logger.warn("No 'lower' given for area");
+        }
+        else {
+            lowerData = providers.get(0).provideData(
+                artifact.getLowerDPKey(), null, context);
+        }
+
+        providers = context.getDataProvider(artifact.getUpperDPKey());
+        if (providers.size() < 1) {
+            logger.warn("No 'upper' given for area");
+        }
+        else {
+            upperData = providers.get(0).provideData(
+                artifact.getUpperDPKey(), null, context);
+        }
+
+        if (upperData == null && lowerData == null) {
+            logger.warn("No 'upper' given for area");
+            return null;
+        }
+
+        return new Object[] {lowerData, upperData};
+    }
+
+
+    /** Do a deep copy. */
+    @Override 
+    public Facet deepCopy() {
+        AreaFacet copy = new AreaFacet(this.index, this.description);
+        copy.set(this);
+        return copy;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :