--- a/backend/src/main/java/org/dive4elements/river/importer/ImportWstColumnQRange.java	Fri Apr 06 14:13:14 2018 +0200
+++ b/backend/src/main/java/org/dive4elements/river/importer/ImportWstColumnQRange.java	Sun Apr 08 18:07:06 2018 +0200
@@ -8,71 +8,81 @@
 
 package org.dive4elements.river.importer;
 
+import java.util.List;
+
+import org.dive4elements.river.importer.common.StoreMode;
+import org.dive4elements.river.model.River;
+import org.dive4elements.river.model.WstColumn;
 import org.dive4elements.river.model.WstColumnQRange;
 import org.dive4elements.river.model.WstQRange;
-import org.dive4elements.river.model.WstColumn;
-import org.dive4elements.river.model.River;
-
+import org.hibernate.Query;
 import org.hibernate.Session;
-import org.hibernate.Query;
-
-import java.util.List;
 
 public class ImportWstColumnQRange
 {
     protected ImportWstColumn wstColumn;
     protected ImportWstQRange qRange;
 
+    protected StoreMode storeMode;
+
     protected WstColumnQRange peer;
 
     public ImportWstColumnQRange() {
     }
 
     public ImportWstColumnQRange(
-        ImportWstColumn wstColumn,
-        ImportWstQRange qRange
-    ) {
+            final ImportWstColumn wstColumn,
+            final ImportWstQRange qRange
+            ) {
         this.wstColumn = wstColumn;
         this.qRange    = qRange;
+        this.storeMode = StoreMode.NONE;
     }
 
     public ImportWstColumn getWstColumn() {
-        return wstColumn;
+        return this.wstColumn;
     }
 
-    public void setWstColumn(ImportWstColumn wstColumn) {
+    public void setWstColumn(final ImportWstColumn wstColumn) {
         this.wstColumn = wstColumn;
     }
 
     public ImportWstQRange getQRange() {
-        return qRange;
+        return this.qRange;
     }
 
-    public void setQRange(ImportWstQRange qRange) {
+    public void setQRange(final ImportWstQRange qRange) {
         this.qRange = qRange;
     }
 
-    public WstColumnQRange getPeer(River river) {
-        if (peer == null) {
-            WstColumn c = wstColumn.getPeer(river);
-            WstQRange q = qRange.getPeer(river);
-            Session session = ImporterSession.getInstance()
-                .getDatabaseSession();
-            Query query = session.createQuery(
-                "from WstColumnQRange where " +
-                "wstColumn=:c and wstQRange=:q");
-            query.setParameter("c", c);
-            query.setParameter("q", q);
-            List<WstColumnQRange> cols = query.list();
-            if (cols.isEmpty()) {
-                peer = new WstColumnQRange(c, q);
-                session.save(peer);
+    public WstColumnQRange getPeer(final River river) {
+        if (this.peer == null) {
+            final WstColumn c = this.wstColumn.getPeer(river);
+            final WstQRange q = this.qRange.getPeer(river);
+            List<WstColumnQRange> cols;
+            final Session session = ImporterSession.getInstance()
+                    .getDatabaseSession();
+            if (this.wstColumn.storeMode == StoreMode.INSERT)
+                cols = null;
+            else {
+                final Query query = session.createQuery(
+                        "from WstColumnQRange where " +
+                        "wstColumn=:c and wstQRange=:q");
+                query.setParameter("c", c);
+                query.setParameter("q", q);
+                cols = query.list();
+            }
+            if ((cols == null) || cols.isEmpty()) {
+                this.peer = new WstColumnQRange(c, q);
+                session.save(this.peer);
+                this.storeMode = StoreMode.INSERT;
             }
             else {
-                peer = cols.get(0);
+                this.peer = cols.get(0);
+                this.storeMode = StoreMode.UPDATE;
             }
         }
-        return peer;
+        return this.peer;
     }
 }
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