77 lines
2.9 KiB
Java
77 lines
2.9 KiB
Java
package org.postgresql.jdbc2.optional;
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import javax.sql.ConnectionPoolDataSource;
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import javax.sql.PooledConnection;
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import java.sql.SQLException;
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import java.io.Serializable;
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/**
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* PostgreSQL implementation of ConnectionPoolDataSource. The app server or
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* middleware vendor should provide a DataSource implementation that takes advantage
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* of this ConnectionPoolDataSource. If not, you can use the PostgreSQL implementation
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* known as PoolingDataSource, but that should only be used if your server or middleware
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* vendor does not provide their own. Why? The server may want to reuse the same
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* Connection across all EJBs requesting a Connection within the same Transaction, or
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* provide other similar advanced features.
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*
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* <p>In any case, in order to use this ConnectionPoolDataSource, you must set the property
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* databaseName. The settings for serverName, portNumber, user, and password are
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* optional. Note: these properties are declared in the superclass.</p>
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*
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* <p>This implementation supports JDK 1.3 and higher.</p>
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*
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* @author Aaron Mulder (ammulder@chariotsolutions.com)
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* @version $Revision: 1.1 $
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*/
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public class ConnectionPool extends BaseDataSource implements Serializable, ConnectionPoolDataSource {
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private boolean defaultAutoCommit = false;
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/**
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* Gets a description of this DataSource.
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*/
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public String getDescription() {
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return "ConnectionPoolDataSource from "+org.postgresql.Driver.getVersion();
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}
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/**
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* Gets a connection which may be pooled by the app server or middleware
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* implementation of DataSource.
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*
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* @throws java.sql.SQLException
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* Occurs when the physical database connection cannot be established.
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*/
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public PooledConnection getPooledConnection() throws SQLException {
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return new PooledConnectionImpl(getConnection(), defaultAutoCommit);
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}
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/**
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* Gets a connection which may be pooled by the app server or middleware
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* implementation of DataSource.
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*
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* @throws java.sql.SQLException
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* Occurs when the physical database connection cannot be established.
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*/
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public PooledConnection getPooledConnection(String user, String password) throws SQLException {
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return new PooledConnectionImpl(getConnection(user, password), defaultAutoCommit);
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}
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/**
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* Gets whether connections supplied by this pool will have autoCommit
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* turned on by default. The default value is <tt>false</tt>, so that
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* autoCommit will be turned off by default.
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*/
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public boolean isDefaultAutoCommit() {
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return defaultAutoCommit;
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}
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/**
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* Sets whether connections supplied by this pool will have autoCommit
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* turned on by default. The default value is <tt>false</tt>, so that
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* autoCommit will be turned off by default.
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*/
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public void setDefaultAutoCommit(boolean defaultAutoCommit) {
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this.defaultAutoCommit = defaultAutoCommit;
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}
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}
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