--- a/backend/src/main/java/org/dive4elements/river/importer/ImportHYK.java	Fri Apr 06 14:13:14 2018 +0200
+++ b/backend/src/main/java/org/dive4elements/river/importer/ImportHYK.java	Sun Apr 08 18:07:06 2018 +0200
@@ -8,16 +8,15 @@
 
 package org.dive4elements.river.importer;
 
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+import org.dive4elements.river.importer.common.StoreMode;
 import org.dive4elements.river.model.HYK;
 import org.dive4elements.river.model.River;
-
-import java.util.List;
-import java.util.ArrayList;
-
+import org.hibernate.Query;
 import org.hibernate.Session;
-import org.hibernate.Query;
-
-import org.apache.log4j.Logger;
 
 public class ImportHYK
 {
@@ -28,61 +27,66 @@
 
     protected List<ImportHYKEntry> entries;
 
+    protected StoreMode storeMode;
+
     protected HYK peer;
 
     public ImportHYK() {
-        entries = new ArrayList<ImportHYKEntry>();
+        this.entries = new ArrayList<>();
+        this.storeMode = StoreMode.NONE;
     }
 
-    public ImportHYK(ImportRiver river, String description) {
+    public ImportHYK(final ImportRiver river, final String description) {
         this();
         this.river       = river;
         this.description = description;
     }
 
     public ImportRiver getRiver() {
-        return river;
+        return this.river;
     }
 
-    public void setRiver(ImportRiver river) {
+    public void setRiver(final ImportRiver river) {
         this.river = river;
     }
 
-    public void addEntry(ImportHYKEntry entry) {
-        entries.add(entry);
+    public void addEntry(final ImportHYKEntry entry) {
+        this.entries.add(entry);
         entry.setHYK(this);
     }
 
     public void storeDependencies() {
-        log.info("store HYK '" + description + "'");
+        log.info("store HYK '" + this.description + "'");
         getPeer();
-        for (int i = 0, N = entries.size(); i < N; ++i) {
-            ImportHYKEntry entry = entries.get(i);
+        for (int i = 0, N = this.entries.size(); i < N; ++i) {
+            final ImportHYKEntry entry = this.entries.get(i);
             log.info("  store km " + entry.getKm() +
-                " (" + (i+1) + " of " + N + ")");
+                    " (" + (i+1) + " of " + N + ")");
             entry.storeDependencies();
         }
     }
 
     public HYK getPeer() {
-        if (peer == null) {
-            River r = river.getPeer();
-            Session session = ImporterSession.getInstance()
-                .getDatabaseSession();
-            Query query = session.createQuery(
-                "from HYK where river=:river and description=:description");
+        if (this.peer == null) {
+            final River r = this.river.getPeer();
+            final Session session = ImporterSession.getInstance()
+                    .getDatabaseSession();
+            final Query query = session.createQuery(
+                    "from HYK where river=:river and description=:description");
             query.setParameter("river", r);
-            query.setParameter("description", description);
-            List<HYK> hyks = query.list();
+            query.setParameter("description", this.description);
+            final List<HYK> hyks = query.list();
             if (hyks.isEmpty()) {
-                peer = new HYK(r, description);
-                session.save(peer);
+                this.peer = new HYK(r, this.description);
+                session.save(this.peer);
+                this.storeMode = StoreMode.INSERT;
             }
             else {
-                peer = hyks.get(0);
+                this.peer = hyks.get(0);
+                this.storeMode = StoreMode.UPDATE;
             }
         }
-        return peer;
+        return this.peer;
     }
 }
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