--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/GaugeDischargeCurveArtifact.java	Fri Sep 28 08:44:49 2012 +0000
@@ -0,0 +1,99 @@
+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.artifactdatabase.state.DefaultOutput;
+import de.intevation.artifactdatabase.state.Facet;
+
+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.StaticState;
+import de.intevation.flys.artifacts.StaticFLYSArtifact;
+import de.intevation.flys.artifacts.model.GaugeDischargeCurveFacet;
+
+import de.intevation.flys.model.Gauge;
+
+import de.intevation.flys.utils.FLYSUtils;
+
+/**
+ * Artifact to calculate a discharge curve from a gauge overview info
+ *
+ * @author <a href="mailto:bjoern.ricks@intevation.de">Björn Ricks</a>
+ */
+public class GaugeDischargeCurveArtifact
+extends      AbstractStaticStateArtifact
+{
+
+    private static final Logger logger =
+        Logger.getLogger(GaugeDischargeCurveArtifact.class);
+
+    public static final String XPATH_RIVER = "/art:action/art:river/@name";
+    public static final String XPATH_GAUGE = "/art:action/art:gauge/@reference";
+    public static final String NAME = "gaugedischargecurve";
+    public static final String STATIC_STATE_NAME = "state.gaugedischargecurve.static";
+
+    /**
+     * Setup initializes the data by extracting the river and gauge from
+     * the XML Document.
+     */
+    @Override
+    public void setup(
+        String          identifier,
+        ArtifactFactory factory,
+        Object          context,
+        CallMeta        callmeta,
+        Document        data)
+    {
+        logger.debug("GaugeDischargeCurveArtifact.setup");
+
+        if (logger.isDebugEnabled()) {
+            logger.debug("GaugeDischargeCurveState.setup" + XMLUtils.toString(data));
+        }
+        String gaugeref = XMLUtils.xpathString(data, XPATH_GAUGE,
+                ArtifactNamespaceContext.INSTANCE);
+        String rivername = XMLUtils.xpathString(data, XPATH_RIVER,
+                ArtifactNamespaceContext.INSTANCE);
+
+        addStringData("river", rivername);
+        addStringData("reference_gauge", gaugeref);
+
+        Gauge gauge = FLYSUtils.getReferenceGauge(this);
+
+        Facet gfacet = new GaugeDischargeCurveFacet(rivername, gauge);
+
+        List<Facet> fs = new ArrayList<Facet>(1);
+        fs.add(gfacet);
+
+        addFacets(STATIC_STATE_NAME, fs);
+
+        super.setup(identifier, factory, context, callmeta, data);
+    }
+
+    @Override
+    public String getName() {
+        return NAME;
+    }
+
+    @Override
+    protected void initStaticState() {
+        StaticState state = new StaticState(STATIC_STATE_NAME);
+        List<Facet> fs = facets.get(STATIC_STATE_NAME);
+        DefaultOutput output = new DefaultOutput(
+            "discharge_curve",
+            "output.discharge_curve", "image/png",
+            fs,
+            "chart");
+
+        state.addOutput(output);
+        setStaticState(state);
+    }
+}