Package org.postgresql.ds.jdbc23

Source Code of org.postgresql.ds.jdbc23.AbstractJdbc23ConnectionPoolDataSource

/*-------------------------------------------------------------------------
*
* Copyright (c) 2004-2014, PostgreSQL Global Development Group
*
*
*-------------------------------------------------------------------------
*/
package org.postgresql.ds.jdbc23;

import javax.sql.PooledConnection;
import java.sql.SQLException;
import java.io.Serializable;
import java.io.ObjectOutputStream;
import java.io.ObjectInputStream;
import java.io.IOException;

import org.postgresql.ds.common.*;
import org.postgresql.ds.PGPooledConnection;

/**
* PostgreSQL implementation of ConnectionPoolDataSource.  The app server or
* middleware vendor should provide a DataSource implementation that takes advantage
* of this ConnectionPoolDataSource.  If not, you can use the PostgreSQL implementation
* known as PoolingDataSource, but that should only be used if your server or middleware
* vendor does not provide their own.  Why? The server may want to reuse the same
* Connection across all EJBs requesting a Connection within the same Transaction, or
* provide other similar advanced features.
*
* <p>In any case, in order to use this ConnectionPoolDataSource, you must set the property
* databaseName.  The settings for serverName, portNumber, user, and password are
* optional.  Note: these properties are declared in the superclass.</p>
*
* <p>This implementation supports JDK 1.3 and higher.</p>
*
* @author Aaron Mulder (ammulder@chariotsolutions.com)
*/
public class AbstractJdbc23ConnectionPoolDataSource extends BaseDataSource implements Serializable
{
    private boolean defaultAutoCommit = true;

    /**
     * Gets a description of this DataSource.
     */
    public String getDescription()
    {
        return "ConnectionPoolDataSource from " + org.postgresql.Driver.getVersion();
    }

    /**
     * Gets a connection which may be pooled by the app server or middleware
     * implementation of DataSource.
     *
     * @throws java.sql.SQLException
     *     Occurs when the physical database connection cannot be established.
     */
    public PooledConnection getPooledConnection() throws SQLException
    {
        return new PGPooledConnection(getConnection(), defaultAutoCommit);
    }

    /**
     * Gets a connection which may be pooled by the app server or middleware
     * implementation of DataSource.
     *
     * @throws java.sql.SQLException
     *     Occurs when the physical database connection cannot be established.
     */
    public PooledConnection getPooledConnection(String user, String password) throws SQLException
    {
        return new PGPooledConnection(getConnection(user, password), defaultAutoCommit);
    }

    /**
     * Gets whether connections supplied by this pool will have autoCommit
     * turned on by default.  The default value is <tt>false</tt>, so that
     * autoCommit will be turned off by default.
     */
    public boolean isDefaultAutoCommit()
    {
        return defaultAutoCommit;
    }

    /**
     * Sets whether connections supplied by this pool will have autoCommit
     * turned on by default.  The default value is <tt>false</tt>, so that
     * autoCommit will be turned off by default.
     */
    public void setDefaultAutoCommit(boolean defaultAutoCommit)
    {
        this.defaultAutoCommit = defaultAutoCommit;
    }

    private void writeObject(ObjectOutputStream out) throws IOException
    {
        writeBaseObject(out);
        out.writeBoolean(defaultAutoCommit);
    }

    private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException
    {
        readBaseObject(in);
        defaultAutoCommit = in.readBoolean();
    }

}
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