--- a/flys-backend/src/main/java/de/intevation/flys/importer/ImportDepth.java	Fri Apr 13 10:59:15 2012 +0000
+++ b/flys-backend/src/main/java/de/intevation/flys/importer/ImportDepth.java	Fri Apr 13 11:45:29 2012 +0000
@@ -2,8 +2,13 @@
 
 import java.math.BigDecimal;
 
+import java.util.List;
+
 import org.apache.log4j.Logger;
 
+import org.hibernate.Session;
+import org.hibernate.Query;
+
 import de.intevation.flys.model.Depth;
 
 
@@ -29,13 +34,42 @@
 
     public void storeDependencies() {
         log.info("store dependencies");
+
+        getPeer();
     }
 
 
     public Depth getPeer() {
         log.info("get peer");
 
-        return null;
+        if (peer == null) {
+            Session session = ImporterSession.getInstance().getDatabaseSession();
+
+            Query query = session.createQuery(
+                "from Depth where " +
+                "   lower=:lower and " +
+                "   upper=:upper and " +
+                "   unit=:unit");
+
+            query.setParameter("lower", lower);
+            query.setParameter("upper", upper);
+            query.setParameter("unit", unit.getPeer());
+
+            List<Depth> depths = query.list();
+
+            if (depths.isEmpty()) {
+                log.debug("Create new Depth DB instance.");
+
+                peer = new Depth(lower, upper, unit.getPeer());
+
+                session.save(peer);
+            }
+            else {
+                peer = depths.get(0);
+            }
+        }
+
+        return peer;
     }
 }
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