TESB-18908:Memory-Leak in TalendDataSource implementation (#864)

main/plugins/org.talend.librariesmanager/resources/java/routines/system/TalendDataSource.java

@@ -2,15 +2,11 @@ package routines.system;
 
 import java.sql.Connection;
 import java.sql.SQLException;
-import java.util.HashSet;
-import java.util.Set;
 
 public class TalendDataSource {
 
     private final javax.sql.DataSource ds;
 
-    private Set<Connection> conns = new HashSet<>();
-
     /**
      * hold a data source inside
      * 
@@ -28,10 +24,8 @@ public class TalendDataSource {
      */
     public java.sql.Connection getConnection() throws SQLException {
         Connection conn = ds.getConnection();
-        if (conn != null) {
-            conns.add(conn);
-        } else {
-            throw new RuntimeException("Unable to get a pooled database connection from pool");
+        if (conn == null) {
+        	throw new RuntimeException("Unable to get a pooled database connection from pool");
         }
         return conn;
     }
@@ -44,18 +38,4 @@ public class TalendDataSource {
     public javax.sql.DataSource getRawDataSource() {
         return ds;
     }
-
-    /**
-     * close all the connections which is created by the data source inside
-     * 
-     * @throws SQLException
-     */
-    public void close() throws SQLException {
-        for (Connection conn : conns) {
-            if (!conn.isClosed()) {// the connection can be closed outside
-                conn.close();
-            }
-        }
-        conns.clear();
-    }
 }