@Override public String createUniqueConstraint( String connectionToken, int item, String constraintName, boolean isPrimaryKey, ArrayList<String> columnList) throws DatabaseConnectionException, PostgreSQLException { ConnectionManager connMgr = new ConnectionManager(); HttpServletRequest request = this.getThreadLocalRequest(); String clientIP = ConnectionInfo.remoteAddr(request); String userAgent = request.getHeader("User-Agent"); Constraints constraints; constraints = new Constraints(connMgr.getConnection(connectionToken, clientIP, userAgent)); try { return constraints.createUniqueConstraint(item, constraintName, isPrimaryKey, columnList); } catch (SQLException e) { throw new PostgreSQLException(e.getMessage()); } }