com.mchange.v2.c3p0

Interface ConnectionCustomizer

Known Implementing Classes:
AbstractConnectionCustomizer

public interface ConnectionCustomizer

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.

Method Summary

void
onAcquire(Connection c, String parentDataSourceIdentityToken)
Called immediately after a Connection is acquired from the underlying database for incorporation into the pool.
void
onCheckIn(Connection c, String parentDataSourceIdentityToken)
Called immediately after a Connection is checked in, prior to reincorporation into the pool.
void
onCheckOut(Connection c, String parentDataSourceIdentityToken)
Called immediately before a Connection is made available to a client upon checkout.
void
onDestroy(Connection c, String parentDataSourceIdentityToken)
Called immediately before a Connection is destroyed after being removed from the pool.

Method Details

onAcquire

public void onAcquire(Connection c,
                      String parentDataSourceIdentityToken)
            throws Exception
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 [holdability, transactionIsolation, readOnly], those modifications will override defaults throughout the Connection's tenure in the pool.


onCheckIn

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

onCheckOut

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

onDestroy

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