--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/exports/ChartGenerator.java	Wed Apr 27 14:40:44 2011 +0000
@@ -0,0 +1,48 @@
+package de.intevation.flys.exports;
+
+import java.io.IOException;
+import java.io.OutputStream;
+
+import org.apache.log4j.Logger;
+
+import org.w3c.dom.Document;
+
+import de.intevation.artifacts.Artifact;
+import de.intevation.artifacts.CallContext;
+
+
+/**
+ * The base class for chart creation. It should provide some basic things that
+ * equal in all chart types.
+ *
+ * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
+ */
+public abstract class ChartGenerator implements OutGenerator {
+
+    private static Logger logger = Logger.getLogger(ChartGenerator.class);
+
+
+    /** The document of the incoming out() request.*/
+    protected Document request;
+
+    /** The output stream where the data should be written to.*/
+    protected OutputStream out;
+
+    /** The CallContext object.*/
+    protected CallContext context;
+
+
+    public void init(Document request, OutputStream out, CallContext context) {
+        logger.debug("ChartGenerator.init");
+
+        this.request = request;
+        this.out     = out;
+        this.context = context;
+    }
+
+
+    public abstract void doOut(Artifact artifact, Document attr);
+
+    public abstract void generate() throws IOException;
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :