--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/exports/fixings/FixChartGenerator.java	Mon Jun 18 11:21:30 2012 +0000
@@ -0,0 +1,58 @@
+package de.intevation.flys.exports.fixings;
+
+import org.w3c.dom.Element;
+import org.w3c.dom.Document;
+
+import org.apache.log4j.Logger;
+
+import java.io.OutputStream;
+
+import javax.xml.xpath.XPathConstants;
+
+import de.intevation.artifacts.ArtifactNamespaceContext;
+import de.intevation.artifacts.common.utils.XMLUtils;
+import de.intevation.artifacts.CallContext;
+
+import de.intevation.flys.exports.XYChartGenerator;
+
+public abstract class FixChartGenerator
+extends XYChartGenerator
+{
+    private static Logger logger = Logger.getLogger(FixChartGenerator.class);
+
+    public static final String XPATH_CHART_CURRENTKM =
+        "/art:action/art:attributes/art:currentKm";
+
+
+    @Override
+    public void init(Document request, OutputStream out, CallContext context) {
+        super.init(request, out, context);
+
+        logger.debug("currentKm = " + new Double(getCurrentKmFromRequest()));
+        context.putContextValue("currentKm", new Double(getCurrentKmFromRequest()));
+    }
+
+    public double getCurrentKmFromRequest() {
+        Element km = (Element)XMLUtils.xpath(
+            request,
+            XPATH_CHART_CURRENTKM,
+            XPathConstants.NODE,
+            ArtifactNamespaceContext.INSTANCE);
+
+        if (km == null) {
+            return -1d;
+        }
+
+        String uri = ArtifactNamespaceContext.NAMESPACE_URI;
+
+        String currentKm = km.getAttributeNS(uri, "km");
+        try {
+            double d = Double.valueOf(currentKm).doubleValue();
+            return d;
+        }
+        catch(NumberFormatException nfe) {
+            return -1d;
+        }
+    }
+}
+