Module org.postgresql.pljava.internal

Package org.postgresql.pljava.internal

Class PgSavepoint

java.lang.Object

org.postgresql.pljava.internal.PgSavepoint

All Implemented Interfaces:

Savepoint

public class PgSavepoint
extends Object
implements Savepoint

Implementation of Savepoint for the SPI connection.

It is an historical oddity that this is in the .internal package rather than .jdbc.

Author:

Thomas Hallgren

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
int	getSavepointId()
String	getSavepointName()
int	hashCode()
void	onInvocationExit(boolean withError)
void	release()	Release (commit) a savepoint; only to be called by Connection.releaseSavepoint.
void	rollback()	Roll back a savepoint; only to be called by Connection.rollback.
static PgSavepoint	set(String name)	Establish a savepoint; only to be called by Connection.setSavepoint, which makes the arrangements for onInvocationExit to be called.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Method Details

set

public static PgSavepoint set(String name)
                       throws SQLException

Establish a savepoint; only to be called by Connection.setSavepoint, which makes the arrangements for onInvocationExit to be called.

Throws:

SQLException

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

release

public void release()
             throws SQLException

Release (commit) a savepoint; only to be called by Connection.releaseSavepoint.

Throws:

SQLException

rollback

public void rollback()
              throws SQLException

Roll back a savepoint; only to be called by Connection.rollback.

JDBC's rollback-to-savepoint operation discards all more-deeply-nested savepoints, but not the one that is the target of the rollback. That one remains active and can be used again. That behavior matches PostgreSQL's SQL-level savepoints, but here it has to be built on top of the "internal subtransaction" layer, and made to work the right way.

Throws:

SQLException

getSavepointName

public String getSavepointName()
                        throws SQLException

Specified by:

getSavepointName in interface Savepoint

Throws:

SQLException

getSavepointId

public int getSavepointId()

Specified by:

getSavepointId in interface Savepoint

onInvocationExit

public void onInvocationExit(boolean withError)
                      throws SQLException

Throws:

SQLException