--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/org/dive4elements/river/artifacts/model/CrossSectionFacet.java	Thu Apr 25 12:06:39 2013 +0200
@@ -0,0 +1,122 @@
+package org.dive4elements.river.artifacts.model;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+
+import org.dive4elements.artifacts.Artifact;
+import org.dive4elements.artifacts.CallContext;
+
+import org.dive4elements.artifactdatabase.state.Facet;
+
+import org.dive4elements.river.artifacts.CrossSectionArtifact;
+
+import org.dive4elements.river.artifacts.states.DefaultState.ComputeType;
+
+
+/**
+ * Trival Facet for Cross Sections (profiles).
+ */
+public class CrossSectionFacet
+extends      BlackboardDataFacet
+implements   FacetTypes {
+
+    public static String BLACKBOARD_CS_MASTER_DATA
+        = "crosssection.masterprofile.data";
+
+    public static String BLACKBOARD_CS_PREV_KM
+        = "crosssection.masterprofile.km.prev";
+
+    public static String BLACKBOARD_CS_NEXT_KM
+        = "crosssection.masterprofile.km.next";
+
+
+    private static Logger logger = Logger.getLogger(CrossSectionFacet.class);
+
+    protected ComputeType type;
+
+
+    /** Trivial constructor, set (maybe localized) description. */
+    public CrossSectionFacet(int idx, String description) {
+        super(idx, CROSS_SECTION, description);
+        type = ComputeType.ADVANCE;
+    }
+
+
+    /** Tell world we know about crosssection masters data and its index. */
+    public List getStaticDataProviderKeys(Artifact art) {
+        CrossSectionArtifact artifact = (CrossSectionArtifact) art;
+        List keys = new ArrayList();
+        if (artifact.isMaster()) {
+            keys.add(BLACKBOARD_CS_MASTER_DATA);
+            keys.add(BLACKBOARD_CS_PREV_KM);
+            keys.add(BLACKBOARD_CS_NEXT_KM);
+        }
+        keys.add(artifact.identifier() + getIndex());
+        keys.addAll(super.getStaticDataProviderKeys(art));
+        return keys;
+    }
+
+
+    /**
+     * Can provide the master cross section lines or its index.
+     * @param artifact crosssection-artifact
+     * @param key      will respond on BLACKBOARD_CS_MASTER_DATA
+     * @param param    ignored
+     * @param context  ignored
+     * @return data from artifact (cross section master track).
+     */
+    public Object provideBlackboardData(Artifact artifact,
+        Object key,
+        Object param,
+        CallContext context
+    ) {
+        CrossSectionArtifact crossSection = (CrossSectionArtifact) artifact;
+
+        if (key.equals(BLACKBOARD_CS_MASTER_DATA)) {
+            return crossSection.searchCrossSectionLine();
+        }
+        else if (key.equals(artifact.identifier() + getIndex())) {
+            return getData(artifact, context);
+        }
+        else if (key.equals(BLACKBOARD_CS_NEXT_KM)) {
+            return crossSection.getNextKm();
+        }
+        else if (key.equals(BLACKBOARD_CS_PREV_KM)) {
+            return crossSection.getPrevKm();
+        }
+        else {
+            Object obj = super.provideBlackboardData(artifact, key, param,
+                context);
+            if (obj == null) {
+                logger.warn("Cannot provide data for key: " + key);
+            }
+            return obj;
+        }
+    }
+
+
+    /**
+     * 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 cross section");
+
+        CrossSectionArtifact artifact = (CrossSectionArtifact)art;
+
+        return artifact.getCrossSectionData();
+    }
+
+
+    /** Do a deep copy. */
+    @Override
+    public Facet deepCopy() {
+        CrossSectionFacet copy = new CrossSectionFacet(this.index, this.description);
+        copy.set(this);
+        return copy;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :