--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/common/AbstractSInfoProcessor.java	Wed Feb 28 18:55:39 2018 +0100
@@ -0,0 +1,74 @@
+/* Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
+ * Software engineering by
+ *  Björnsen Beratende Ingenieure GmbH
+ *  Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
+ *
+ * This file is Free Software under the GNU AGPL (>=v3)
+ * and comes with ABSOLUTELY NO WARRANTY! Check out the
+ * documentation coming with Dive4Elements River for details.
+ */
+
+package org.dive4elements.river.artifacts.sinfo.common;
+
+import java.util.Set;
+
+import org.apache.log4j.Logger;
+import org.dive4elements.artifactdatabase.state.ArtifactAndFacet;
+import org.dive4elements.river.exports.DiagramGenerator;
+import org.dive4elements.river.exports.process.DefaultProcessor;
+import org.dive4elements.river.themes.ThemeDocument;
+
+/**
+ * Abstraction for some processor implementation within S-INFO. Probably this abstraction could also be used for other
+ * cases as well.
+ *
+ * @author Gernot Belger
+ *
+ */
+public abstract class AbstractSInfoProcessor extends DefaultProcessor {
+
+    private final static Logger log = Logger.getLogger(AbstractSInfoProcessor.class);
+
+    private String yAxisLabel;
+
+    private final Set<String> handled_facet_types;
+
+    private final String i18n_axis_label;
+
+    public AbstractSInfoProcessor(final String i18n_axis_label, final Set<String> handled_facet_types) {
+        this.i18n_axis_label = i18n_axis_label;
+        this.handled_facet_types = handled_facet_types;
+    }
+
+    @Override
+    public final void doOut(final DiagramGenerator generator, final ArtifactAndFacet bundle, final ThemeDocument theme, final boolean visible) {
+        try {
+            this.yAxisLabel = generateSeries(generator, bundle, theme, visible);
+        }
+        catch (final Exception e) {
+            log.error(e.getMessage(), e);
+        }
+    }
+
+    /**
+     * @return The axis label
+     */
+    protected abstract String generateSeries(final DiagramGenerator generator, final ArtifactAndFacet bundle, final ThemeDocument theme, final boolean visible);
+
+    @Override
+    public final boolean canHandle(final String facettype) {
+        return this.handled_facet_types.contains(facettype);
+    }
+
+    @Override
+    public final String getAxisLabel(final DiagramGenerator generator) {
+        if (this.yAxisLabel != null && !this.yAxisLabel.isEmpty()) {
+            // REMARK/UNINTENDED: yAxisLabel may also be a resolved message (side-effect of StyledXYSeries#putMetadata),
+            // and cannot be resolved, so we need to give the resolved value as default
+            // FIXME: In other implementations (i.e. FlowVelocityProcessor), an explicit (German) default label is given here,
+            // probably the English version will also show German (CHECK)
+            return generator.msg(this.yAxisLabel, this.yAxisLabel);
+        }
+        return generator.msg(this.i18n_axis_label, "MISSING");
+    }
+}
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