fix(4.3) : transfered TTL 30 days bugfix to cb specific manager

https://github.com/JanssenProject/jans-orm/issues/25

couchbase/src/main/java/org/gluu/orm/couchbase/impl/CouchbaseEntryManager.java

@@ -69,7 +69,9 @@
  */
 public class CouchbaseEntryManager extends BaseEntryManager implements Serializable {
 
-	private static final long serialVersionUID = 2127241817126412574L;
+    public static final int EXPIRATION_30_DAYS = 30 * 86400;
+
+	private static final long serialVersionUID = 2127241817126412575L;
 
     private static final Logger LOG = LoggerFactory.getLogger(CouchbaseConnectionProvider.class);
 
@@ -87,6 +89,19 @@ protected CouchbaseEntryManager(CouchbaseOperationService operationService) {
         subscribers = new LinkedList<DeleteNotifier>();
     }
 
+    @Override
+    protected <T> Integer getExpirationValue(Object entry, Class<T> entryClass, boolean merge) {
+        Integer value = super.getExpirationValue(entry, entryClass, merge);
+
+        // if expiration is more then 30 days we must convert it to absolute Unit time stamp to avoid immediate expiration https://docs.couchbase.com/java-sdk/current/concept-docs/documents.html#setting-document-expiration
+        if (value >= EXPIRATION_30_DAYS) {
+            final int now = (int) System.currentTimeMillis() / 1000;
+            value = now + value;
+        }
+
+        return value;
+    }
+
     @Override
     public boolean destroy() {
         if (this.operationService == null) {