--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-backend/src/main/java/de/intevation/flys/importer/ImportWaterlevelDifferenceColumn.java	Thu Apr 26 09:46:32 2012 +0000
@@ -0,0 +1,82 @@
+package de.intevation.flys.importer;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+
+import org.hibernate.Session;
+import org.hibernate.Query;
+
+import de.intevation.flys.model.River;
+import de.intevation.flys.model.WaterlevelDifference;
+import de.intevation.flys.model.WaterlevelDifferenceColumn;
+
+
+public class ImportWaterlevelDifferenceColumn {
+
+    private static final Logger log =
+        Logger.getLogger(ImportWaterlevelDifferenceColumn.class);
+
+
+    private String description;
+
+    private List<ImportWaterlevelDifferenceValue> values;
+
+    private WaterlevelDifferenceColumn peer;
+
+
+    public ImportWaterlevelDifferenceColumn(String description) {
+        this.values = new ArrayList<ImportWaterlevelDifferenceValue>();
+
+        this.description = description;
+    }
+
+
+    public void addValue(ImportWaterlevelDifferenceValue value) {
+        this.values.add(value);
+    }
+
+
+    public void storeDependencies(WaterlevelDifference difference) {
+        log.info("store dependencies");
+
+        WaterlevelDifferenceColumn peer = getPeer(difference);
+
+        int i = 0;
+
+        for (ImportWaterlevelDifferenceValue value: values) {
+            value.storeDependencies(peer);
+            i++;
+        }
+
+        log.info("stored " + i + " waterlevel difference values");
+    }
+
+
+    public WaterlevelDifferenceColumn getPeer(WaterlevelDifference diff) {
+        if (peer == null) {
+            Session session = ImporterSession.getInstance().getDatabaseSession();
+            Query query = session.createQuery(
+                "from WaterlevelDifferenceColumn where " +
+                "   difference=:difference and " +
+                "   description=:description"
+            );
+
+            query.setParameter("difference", diff);
+            query.setParameter("description", description);
+
+            List<WaterlevelDifferenceColumn> cols = query.list();
+            if (cols.isEmpty()) {
+                peer = new WaterlevelDifferenceColumn(diff, description);
+                session.save(peer);
+            }
+            else {
+                peer = cols.get(0);
+            }
+        }
+
+        return peer;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :