com.mchange.v2.c3p0.ConnectionCustomizer Maven / Gradle / Ivy

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This OSGi bundle wraps ${pkgArtifactId} ${pkgVersion} jar file.

There is a newer version: 0.9.5.5_1

package com.mchange.v2.c3p0;

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

/**
 *  Implementations of this interface should
 *  be immutable, and should offer public,
 *  no argument constructors.
 *
 *  The methods are handed raw, physical
 *  database Connections, not c3p0-generated
 *  proxies.
 *
 *  Although c3p0 will ensure this with
 *  respect to state controlled by
 *  standard JDBC methods, any modifications
 *  of vendor-specific state shold be made
 *  consistently so that all Connections
 *  in the pool are interchangable.
 */
public interface ConnectionCustomizer
{
    /**
     *  Called immediately after a 
     *  Connection is acquired from the
     *  underlying database for 
     *  incorporation into the pool.
     *
     *  This method is only called once
     *  per Connection. If standard JDBC
     *  Connection properties are modified —
     *  specifically catalog, holdability, transactionIsolation,
     *  readOnly, and typeMap — those modifications
     *  will override defaults throughout
     *  the Connection's tenure in the
     *  pool.
     */
    public void onAcquire( Connection c, String parentDataSourceIdentityToken )
	throws Exception;

    /**
     *  Called immediately before a 
     *  Connection is destroyed after
     *  being removed from the pool.
     */
    public void onDestroy( Connection c, String parentDataSourceIdentityToken )
	throws Exception;

    /**
     *  Called immediately before a 
     *  Connection is made available to
     *  a client upon checkout.
     */
    public void onCheckOut( Connection c, String parentDataSourceIdentityToken )
	throws Exception;

    /**
     *  Called immediately after a 
     *  Connection is checked in,
     *  prior to reincorporation
     *  into the pool.
     */
    public void onCheckIn( Connection c, String parentDataSourceIdentityToken )
	throws Exception;
}