org.enhydra.jdbc.instantdb
Class IdbXAConnection

java.lang.Object
  org.enhydra.jdbc.standard.StandardPooledConnection
      org.enhydra.jdbc.standard.StandardXAConnection
          org.enhydra.jdbc.instantdb.IdbXAConnection

All Implemented Interfaces:

Runnable, Referenceable, PooledConnection, XAConnection, XAResource

public final class IdbXAConnection
extends StandardXAConnection

Provides and InstantDB specific instance of StandardXAConnection. Almost all of the required functionality is provided curtesy of the generic super class which looks after most of the transaction state management. InstantDB's own Transaction object is informed that it is part of a global transaction and looks after the detail thereafter.

Field Summary

Fields inherited from class org.enhydra.jdbc.standard.StandardXAConnection

connectionHandle, curCon, thisAutoCommit, timerThread, transactionManager, xaDataSource

Fields inherited from class org.enhydra.jdbc.standard.StandardPooledConnection

con, dataSource, log

Fields inherited from interface javax.transaction.xa.XAResource

TMENDRSCAN, TMFAIL, TMJOIN, TMNOFLAGS, TMONEPHASE, TMRESUME, TMSTARTRSCAN, TMSUCCESS, TMSUSPEND, XA_OK, XA_RDONLY

Constructor Summary

IdbXAConnection(StandardXADataSource dataSource, String user, String password)
Creates the first free connection.

Method Summary

boolean	isSameRM(XAResource xares) Checks to see if two XAResource objects correspond to the same Resource Manager.
int	prepare(Xid xid) Prepares to perform a commit.
void	start(Xid xid, int flags) Associates this XAConnection with a global transaction.

Methods inherited from class org.enhydra.jdbc.standard.StandardXAConnection

checkPreparedState, close, commit, doStart, end, forget, getCommitOnPrepare, getConnection, getReference, getTransactionTimeout, getXAResource, newConnectionHandle, recover, rollback, run, setCommitOnPrepare, setTransactionManager, setTransactionTimeout, toString

Methods inherited from class org.enhydra.jdbc.standard.StandardPooledConnection

addConnectionEventListener, connectionErrorOccurred, getPhysicalConnection, removeConnectionEventListener, setLogger

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface javax.sql.PooledConnection

addConnectionEventListener, addStatementEventListener, removeConnectionEventListener, removeStatementEventListener

Constructor Detail

IdbXAConnection

public IdbXAConnection(StandardXADataSource dataSource,
                       String user,
                       String password)
                throws SQLException

Creates the first free connection.

Throws:

SQLException

Method Detail

start

public void start(Xid xid,
                  int flags)
           throws XAException

Associates this XAConnection with a global transaction. This is the only method which can associate the current connection with a global transaction. It acts only on the current connection which must have been previously established using getConnection.

Specified by:

start in interface XAResource

Overrides:

start in class StandardXAConnection

Throws:

XAException

prepare

public int prepare(Xid xid)
            throws XAException

Prepares to perform a commit.

Specified by:

prepare in interface XAResource

Overrides:

prepare in class StandardXAConnection

Throws:

XAException

isSameRM

public boolean isSameRM(XAResource xares)
                 throws XAException

Checks to see if two XAResource objects correspond to the same Resource Manager. This can go one better than its super class as it can actually check the InstantDB database objects.

Specified by:

isSameRM in interface XAResource

Overrides:

isSameRM in class StandardXAConnection

Throws:

XAException