redora.db.Connection Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of core Show documentation
Implementation of the API and core database access.
The newest version!
/*
 * Copyright 2009-2010 Nanjing RedOrange ltd (http://www.red-orange.cn)
 *
 * 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 redora.db;

import org.apache.commons.lang3.StringUtils;
import org.jetbrains.annotations.NotNull;
import redora.exceptions.ConnectException;

import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.logging.Logger;

import static java.util.logging.Level.SEVERE;
import static java.util.logging.Level.WARNING;

public class Connection {

    private static final transient Logger l = Logger.getLogger("redora.db.Connection");

    @NotNull
    public java.sql.Connection con;

    public Connection(@NotNull String schema) throws ConnectException {
        connect(schema);
    }

    void connect(@NotNull String schema) throws ConnectException {
         try {
             con = DriverManager.getConnection(DatabaseFactory.connect(schema), DatabaseFactory.info(schema));
             String autoCommit = DatabaseFactory.getConfiguration().getProperty("database." + schema + ".autoCommit");
             if (StringUtils.isEmpty(autoCommit))
                 autoCommit = DatabaseFactory.getConfiguration().getProperty("database.default.autoCommit");
             con.setAutoCommit("true".equals(autoCommit));
         } catch (SQLException e) {
             throw new ConnectException("Failed to connect to " + DatabaseFactory.connect(schema), e);
        }
    }

    public boolean isConnected() {
        try {
            return !con.isClosed();
        } catch (SQLException e) {
            l.log(WARNING, "Failed isClosed check", e);
        }
        return false;
    }

    public void close() {
        try {
            con.close();
        } catch (SQLException e) {
            l.log(WARNING, "Failed closing connection", e);
        }
    }

    public void reset(@NotNull String schema) {
        close();
        try {
            connect(schema);
        } catch (ConnectException e) {
            l.log(SEVERE, "Swallowing reconnect failure", e);
        }
    }
}