io.dddspring.common.port.adapter.persistence.ConnectionProvider Maven / Gradle / Ivy
// Copyright 2012,2013 Vaughn Vernon
//
// Licensed 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 io.dddspring.common.port.adapter.persistence;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
public class ConnectionProvider {
private static final ThreadLocal connectionHolder = new ThreadLocal();
public static void closeConnection() {
try {
Connection connection = connection();
if (connection != null) {
connection.close();
// System.out.println("---CONNECTION CLOSED");
}
} catch (SQLException e) {
throw new IllegalStateException(
"Cannot close connection because: "
+ e.getMessage(),
e);
} finally {
connectionHolder.set(null);
}
}
public static Connection connection() {
Connection connection = connectionHolder.get();
return connection;
}
public static Connection connection(DataSource aDataSource) {
Connection connection = connection();
try {
if (connection == null) {
connection = aDataSource.getConnection();
connectionHolder.set(connection);
// System.out.println("CONNECTION OPENED");
}
} catch (SQLException e) {
throw new IllegalStateException(
"Connection not provided because: "
+ e.getMessage(),
e);
}
return connection;
}
}