--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/map/WSPLGENCalculation.java	Thu Apr 25 15:23:37 2013 +0200
@@ -0,0 +1,78 @@
+package org.dive4elements.river.artifacts.model.map;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+
+import org.apache.log4j.Logger;
+
+import org.dive4elements.artifacts.CallMeta;
+import org.dive4elements.river.artifacts.model.Calculation;
+
+
+public class WSPLGENCalculation extends Calculation {
+
+    private static final Logger log = Logger.getLogger(WSPLGENCalculation.class);
+
+    protected Map<Integer, String> errors;
+    protected Map<Integer, String> warnings;
+
+
+    public WSPLGENCalculation() {
+        errors   = new HashMap<Integer, String>();
+        warnings = new HashMap<Integer, String>();
+    }
+
+
+    public void addError(Integer key, String msg) {
+        log.debug("New error: (" + key + ") " + msg);
+        errors.put(key, msg);
+    }
+
+
+    public void addWarning(Integer key, String msg) {
+        log.debug("New warning: (" + key + ") " + msg);
+        warnings.put(key, msg);
+    }
+
+
+    public int numErrors() {
+        return errors.size();
+    }
+
+
+    public int numWarnings() {
+        return warnings.size();
+    }
+
+
+    @Override
+    public void toXML(Document document, CallMeta meta) {
+        Element root = document.createElement("problems");
+
+        if (numErrors() > 0) {
+            for (Map.Entry<Integer, String> entry: errors.entrySet()) {
+                Element problem = document.createElement("problem");
+                problem.setAttribute("error", String.valueOf(entry.getKey()));
+                problem.setTextContent(entry.getValue());
+
+                root.appendChild(problem);
+            }
+        }
+
+        if (numWarnings() > 0) {
+            for (Map.Entry<Integer, String> entry: warnings.entrySet()) {
+                Element problem = document.createElement("problem");
+                problem.setAttribute("error", String.valueOf(entry.getKey()));
+                problem.setTextContent(entry.getValue());
+
+                root.appendChild(problem);
+            }
+        }
+
+        document.appendChild(root);
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :