--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/AnnotationFacet.java	Thu Apr 25 15:23:37 2013 +0200
@@ -0,0 +1,103 @@
+package org.dive4elements.river.artifacts.model;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+
+import org.dive4elements.artifacts.Artifact;
+import org.dive4elements.artifacts.CallContext;
+
+import org.dive4elements.river.artifacts.AnnotationArtifact;
+
+import org.dive4elements.river.jfree.FLYSAnnotation;
+import org.dive4elements.river.jfree.StickyAxisAnnotation;
+
+import org.dive4elements.river.model.Annotation;
+import org.dive4elements.river.model.FastAnnotations;
+
+import org.dive4elements.artifactdatabase.state.DefaultFacet;
+import org.dive4elements.artifactdatabase.state.Facet;
+
+import org.dive4elements.river.utils.FLYSUtils;
+
+import org.dive4elements.river.artifacts.FLYSArtifact;
+
+
+/**
+ * Facet to access Annotations (landmarks, POIs) of a river.
+ */
+public class AnnotationFacet
+extends      DefaultFacet
+{
+    /** Logger for this class. */
+    private static final Logger logger = Logger.getLogger(AnnotationFacet.class);
+
+
+    /**
+     * Trivial Constructor.
+     */
+    public AnnotationFacet() {
+    }
+
+
+    /**
+     * Trivial Constructor for a AnnotationFacet.
+     *
+     * @param index       Database-Index to use.
+     * @param name        Name (~type) of Facet.
+     * @param description Description of Facet.
+     */
+    public AnnotationFacet(int index, String name, String description) {
+        super(index, name, description);
+    }
+
+
+    /**
+     * Get List of Annotations for river from Artifact.
+     *
+     * @param artifact (Annotation-)Artifact to query for list of Annotations.
+     * @param context  Ignored.
+     */
+    @Override
+    public Object getData(Artifact artifact, CallContext context) {
+
+        // TODO issue880: Make annotations available _per type_
+        AnnotationArtifact annotationArtifact = (AnnotationArtifact) artifact;
+
+        String riverName = FLYSUtils.getRivername((FLYSArtifact)artifact);
+
+        FastAnnotations fas = LocationProvider.getAnnotations(riverName);
+
+        String filterName = annotationArtifact.getFilterName();
+
+        FastAnnotations.Filter filter = (filterName == null)
+            ? FastAnnotations.IS_POINT
+            : new FastAnnotations.NameFilter(filterName);
+
+        List<StickyAxisAnnotation> xy =
+            new ArrayList<StickyAxisAnnotation>(fas.size());
+
+        for (Iterator<FastAnnotations.Annotation> iter =
+                fas.filter(filter); iter.hasNext();) {
+            FastAnnotations.Annotation fa = iter.next();
+
+            xy.add(new StickyAxisAnnotation(
+                fa.getPosition(),
+                (float)fa.getA(),
+                StickyAxisAnnotation.SimpleAxis.X_AXIS));
+        }
+
+        return new FLYSAnnotation(description, xy);
+    }
+
+
+    @Override
+    public Facet deepCopy() {
+        AnnotationFacet copy = new AnnotationFacet();
+        copy.set(this);
+        return copy;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :