database.DataSourceBase.java Source code

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Here is the source code for database.DataSourceBase.java

Source

package database;
/*
 * 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.
 */

import java.sql.SQLException;

import javax.sql.DataSource;

import org.apache.commons.dbcp.BasicDataSource;

public class DataSourceBase {
    private String driver;
    private String username;
    private String password;
    private String url;
    private int maxActive;
    private DataSource datasource;

    /* public static void main(String[] args) {
    // First we set up the BasicDataSource.
    // Normally this would be handled auto-magically by
    // an external configuration, but in this example we'll
    // do it manually.
    //
    System.out.println("Setting up data source.");
    DataSource dataSource = setupDataSource(args[0]);
    System.out.println("Done.");
        
    //
    // Now, we can use JDBC DataSource as we normally would.
    //
    Connection conn = null;
    Statement stmt = null;
    ResultSet rset = null;
        
    try {
        System.out.println("Creating connection.");
        conn = dataSource.getConnection();
        System.out.println("Creating statement.");
        stmt = conn.createStatement();
        System.out.println("Executing statement.");
        rset = stmt.executeQuery(args[1]);
        System.out.println("Results:");
        int numcols = rset.getMetaData().getColumnCount();
        while(rset.next()) {
            for(int i=1;i<=numcols;i++) {
                System.out.print("\t" + rset.getString(i));
            }
            System.out.println("");
        }
    } catch(SQLException e) {
        e.printStackTrace();
    } finally {
        try { if (rset != null) rset.close(); } catch(Exception e) { }
        try { if (stmt != null) stmt.close(); } catch(Exception e) { }
        try { if (conn != null) conn.close(); } catch(Exception e) { }
    }
     }*/

    public String getDriver() {
        return driver;
    }

    public void setDriver(String driver) {
        this.driver = driver;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public int getMaxActive() {
        return maxActive;
    }

    public void setMaxActive(int maxActive) {
        this.maxActive = maxActive;
    }

    public DataSource getDatasource() {
        return datasource;
    }

    public void setDatasource(DataSource datasource) {
        this.datasource = datasource;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public int getMaxactive() {
        return maxActive;
    }

    public void setMaxactive(int maxActive) {
        this.maxActive = maxActive;
    }

    public DataSource initDataSource() {
        BasicDataSource ds = new BasicDataSource();
        ds.setDriverClassName(driver);
        ds.setUsername(username);
        ds.setPassword(password);
        ds.setUrl(url);
        ds.setMaxActive(maxActive);

        datasource = ds;
        return ds;
    }

    public void printDataSourceStats() {
        BasicDataSource bds = (BasicDataSource) datasource;
        System.out.println("NumActive: " + bds.getNumActive());
        System.out.println("NumIdle: " + bds.getNumIdle());
    }

    public void shutdown() throws SQLException {
        BasicDataSource bs = (BasicDataSource) datasource;
        bs.close();
    }
}