JdbcTransaction.java

/*
 * Copyright (c) 2009-2016, b3log.org & hacpai.com
 *
 * 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 org.b3log.latke.repository.jdbc;


import java.sql.Connection;
import java.sql.SQLException;

import org.b3log.latke.repository.Transaction;
import org.b3log.latke.repository.jdbc.util.Connections;


/**
 *
 * JdbcTransaction.
 * 
 * @author <a href="mailto:wmainlove@gmail.com">Love Yao</a>
 * @author <a href="http://88250.b3log.org">Liang Ding</a>
 * @version 1.0.0.2, Mar 6, 2013
 */
public final class JdbcTransaction implements Transaction {

    /**
     * Connection.
     */
    private Connection connection;

    /**
     * Is active.
     */
    private boolean isActive;

    /**
     * Public constructor.
     * @throws SQLException SQLException 
     */
    public JdbcTransaction() throws SQLException {
        connection = Connections.getConnection();
        connection.setAutoCommit(false);
        isActive = true;
    }

    @Override
    public String getId() {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public void commit() {
        boolean ifSuccess = false;

        try {
            connection.commit();
            ifSuccess = true;
        } catch (final SQLException e) {
            throw new RuntimeException("commit mistake", e);
        }

        if (ifSuccess) {
            dispose();
        }
    }

    @Override
    public void rollback() {
        try {
            connection.rollback();
        } catch (final SQLException e) {
            throw new RuntimeException("rollback mistake", e);
        } finally {
            dispose();
        }
    }

    /**
     * setActive.
     * @param isActive isActive
     */
    public void setActive(final boolean isActive) {
        this.isActive = isActive;
    }

    @Override
    public boolean isActive() {
        return isActive;
    }

    /**
     * close the connection.
     */
    public void dispose() {
        try {
            connection.close();

            JdbcRepository.TX.set(null);
        } catch (final SQLException e) {
            throw new RuntimeException("close connection", e);
        } finally {
            isActive = false;
            connection = null;
        }
    }

    /**
     * getConnection.
     * @return {@link Connection}
     */
    public Connection getConnection() {
        return connection;
    }
}