--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/HYKArtifact.java	Wed Jan 18 13:39:16 2012 +0000
@@ -0,0 +1,124 @@
+package de.intevation.flys.artifacts;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+
+import org.w3c.dom.Document;
+
+import de.intevation.artifacts.Artifact;
+import de.intevation.artifacts.ArtifactFactory;
+import de.intevation.artifacts.CallMeta;
+
+import de.intevation.artifacts.common.ArtifactNamespaceContext;
+import de.intevation.artifacts.common.utils.XMLUtils;
+
+import de.intevation.flys.artifacts.states.DefaultState;
+
+import de.intevation.artifactdatabase.state.Facet;
+
+
+/**
+ * Artifact describing the area between two WKms.
+ */
+public class HYKArtifact extends StaticFLYSArtifact {
+
+    /** Access ids of doc. */
+    public static final String XPATH_IDS = "/art:action/art:ids/@value";
+
+    /** Name of Artifact. */
+    public static final String HYK_ARTIFACT_NAME = "hyk";
+
+    /** Name of data item keeping the km of cs master. */
+    public static final String HYK_KM = "hyk_artifact.data.km";
+
+    /** Own logger. */
+    private static final Logger logger =
+        Logger.getLogger(HYKArtifact.class);
+
+
+    /** Return given name. */
+    @Override
+    public String getName() {
+        return HYK_ARTIFACT_NAME;
+    }
+
+
+    /** Store ids, do super.setup. */
+    @Override
+    public void setup(
+        String          identifier,
+        ArtifactFactory factory,
+        Object          context,
+        CallMeta        callMeta,
+        Document        data)
+    {
+        logger.info("HYKArtifact.setup");
+
+        super.setup(identifier, factory, context, callMeta, data);
+
+        String ids = XMLUtils.xpathString(
+            data, XPATH_IDS, ArtifactNamespaceContext.INSTANCE);
+
+        addStringData("ids", ids);
+    }
+
+
+    /** Set km as Data. */
+    public void setKm(double km) {
+        addStringData(HYK_KM, Double.toString(km));
+    }
+
+
+    /**
+     * Get a DataItem casted to double (0 if fails).
+     * TODO move to FlysArtifact.
+     */
+    public double getDataAsDouble(String dataName) {
+        String val = getDataAsString(dataName);
+        if (val == null) {
+            logger.warn("Data not available.");
+            return 0d;
+        }
+        try {
+            return Double.valueOf(val);
+        }
+        catch (NumberFormatException e) {
+            logger.warn("Could not get data " + dataName + " as double", e);
+            return 0;
+        }
+    }
+
+
+    /** Get km from state data. */
+    public double getKm() {
+        return getDataAsDouble(HYK_KM);
+    }
+
+    /** Do not copy data from daddyfact. */
+    @Override
+    protected void initialize(
+        Artifact artifact,
+        Object   context,
+        CallMeta callMeta)
+    {
+        logger.debug("HYKArtifact.initialize");
+        WINFOArtifact winfo = (WINFOArtifact) artifact;
+        importData(winfo, "river");
+
+        List<Facet> fs = new ArrayList<Facet>();
+
+        DefaultState state = (DefaultState) getCurrentState(context);
+        state.computeInit(this, hash(), context, callMeta, fs);
+        if (!fs.isEmpty()) { 
+            logger.debug("Facets to add in HYKArtifact.initialize ."); 
+            facets.put(getCurrentStateId(), fs); 
+        } 
+        else { 
+            logger.debug("No facets to add in HYKArtifact.initialize ("
+                + state.getID() + ").");
+        }
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :