| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.ode.utils; |
| |
| import java.sql.Connection; |
| import java.sql.SQLException; |
| import javax.sql.DataSource; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Utility to set Ode-specific isolation level on DataSource connections. |
| */ |
| public class DbIsolation { |
| private static final Logger __log = LoggerFactory.getLogger(DbIsolation.class); |
| private static int _isolationLevel; |
| |
| // Read Ode-specific isolation level configuration |
| static { |
| try { |
| _isolationLevel = Integer.parseInt(System.getProperty("ode.connection.isolation", "2")); |
| } catch (Throwable t) { |
| __log.error("Error while reading 'ode.connnection.isolation' property", t); |
| } |
| } |
| |
| public static int getOdeIsolationLevel() { |
| return _isolationLevel; |
| } |
| |
| public static void setOdeIsolationLevel(int isolationLevel) { |
| _isolationLevel = isolationLevel; |
| } |
| |
| /** |
| * Set Ode-specific isolation level on the connection, if needed. |
| */ |
| public static void setIsolationLevel(Connection c) throws SQLException { |
| try { |
| if (_isolationLevel != 0 && c.getTransactionIsolation() != _isolationLevel) { |
| if (__log.isDebugEnabled()) __log.debug("Set isolation level to "+_isolationLevel); |
| c.setTransactionIsolation(_isolationLevel); |
| } |
| } catch (Exception e) { |
| if (__log.isDebugEnabled()) |
| __log.debug("Error while setting isolation level to "+_isolationLevel, e); |
| } |
| } |
| |
| } |