fix: close old JDBC connection before reconnecting The previous connection object was discarded with connection = null without calling close(), leaking the server-side HANA session on every reconnect. The connection is now closed (ignoring any close error) before the field is cleared.

Author: mkemeter

src/main/java/org/sap/cytoscape/internal/hdb/HanaConnectionManager.java

@@ -53,6 +53,9 @@ public HanaConnectionManager() throws IOException {
      */
     public void connect(String host, String port, Properties connectionProperties) throws SQLException {
 
+        if (this.connection != null) {
+            try { this.connection.close(); } catch (SQLException ignore) {}
+        }
         this.connection = null;
 
         try {