tyrex.corba

Class Current

public class Current extends LocalObject implements Current

This is the current interface implementation. This code is extracted from the OpenORB OTS source code.

Version: $Revision: 1.9 $ $Date: 2004/04/21 03:52:27 $

Author: Jerome Daniel <daniel@intalio.com>

Constructor Summary
Current(TransactionFactory factory, ORBInitInfo info, int t_slot)
Constructor
Method Summary
voidbegin()
A new transaction is created.
voidcommit(boolean report_heuristics)
If there is no transaction associated with the client thread, the NoTransaction exception is raised.
TransactionFactoryfactory()
Returns the transaction factory
voidfatal(String from, String msg)
Displays a trace and throw a INTERNAL exception...
PropagationContextgetPropagationContext()
This operation is used to return the propagation context
Controlget_control()
If the client thread is not associated with a transaction, a null object reference is returned.
Stringget_coordinator_ior()
This operation is used to return the Coordinator ior
Statusget_status()
If there is no transaction associated with the client thread, the StatusNoTransaction value is returned.
intget_timeout()
Stringget_transaction_name()
If there is no transaction associated with the client thread, an empty string is returned.
voidpop_txcontext()
This operation restores a previously saved propagation context.
voidprint(String from, String msg)
Displays a trace
voidpush_txcontext(PropagationContext pctx)
This operation is used to push a propagation context in a stack.
voidresume(Control which)
If the parameter is a null object reference, the client thread becomes associated with no transaction.
voidrollback()
If there is no transaction associated with the client thread, the NoTransaction exception is raised.
voidrollback_only()
If there is no transaction associated with the client thread, the NoTransaction exception is raised.
voidset_timeout(int seconds)
This operation modifies a state variable associated with the target object that affects the time-out period associated with top-level transactions created by subsequent invocations of the begin operation.
Controlsuspend()
If the client thread is not associated with a transaction, a null object reference is returned.

Constructor Detail

Current

public Current(TransactionFactory factory, ORBInitInfo info, int t_slot)
Constructor

Method Detail

begin

public void begin()
A new transaction is created. The transaction context of the client thread is modified so that the thread is associated with the new transaction. If the client thread is currently associated with a transaction, the new transaction is a subtransaction of that transaction. Otherwise, the new transaction is a top-level transaction.

Throws: SubtransactionsUnavailable The SubtransactionsUnavailable exception is raised if the client thread already has an associated transaction and the Transaction Service implementation does not support nested transactions.

commit

public void commit(boolean report_heuristics)
If there is no transaction associated with the client thread, the NoTransaction exception is raised. If the client thread does not have permission to commit the transaction, the standard exception NO_PERMISSION is raised. (The commit operation may be restricted to the transaction originator in some implementations.) Otherwise, the transaction associated with the client thread is completed. The effect of this request is equivalent to performing the commit operation on the corresponding Terminator object. The client thread transaction context is modified as follows: If the transaction was begun by a thread (invoking begin) in the same execution environment, then the threads transaction context is restored to its state prior to the begin request. Otherwise, the threads transaction context is set to null.

factory

public TransactionFactory factory()
Returns the transaction factory

fatal

public void fatal(String from, String msg)
Displays a trace and throw a INTERNAL exception...

getPropagationContext

public PropagationContext getPropagationContext()
This operation is used to return the propagation context

get_control

public Control get_control()
If the client thread is not associated with a transaction, a null object reference is returned. Otherwise, a Control object is returned that represents the transaction context currently associated with the client thread. This object can be given to the resume operation to reestablish this context in the same thread or a different thread. The scope within which this object is valid is implementation dependent; at a minimum, it must be usable by the client thread. This operation is not dependent on the state of the transaction; in particular, it does not raise the TRANSACTION_ROLLEDBACK exception.

get_coordinator_ior

public String get_coordinator_ior()
This operation is used to return the Coordinator ior

get_status

public Status get_status()
If there is no transaction associated with the client thread, the StatusNoTransaction value is returned. Otherwise, this operation returns the status of the transaction associated with the client thread. The effect of this request is equivalent to performing the get_status operation on the corresponding Coordinator object.

get_timeout

public int get_timeout()

get_transaction_name

public String get_transaction_name()
If there is no transaction associated with the client thread, an empty string is returned. Otherwise, this operation returns a printable string describing the transaction. The returned string is intended to support debugging. The effect of this request is equivalent to performing the get_transaction_name operation on the corresponding Coordinator object.

pop_txcontext

public void pop_txcontext()
This operation restores a previously saved propagation context. For example, when a sub transaction is completed, the parent propagation context is restored.

print

public void print(String from, String msg)
Displays a trace

push_txcontext

public void push_txcontext(PropagationContext pctx)
This operation is used to push a propagation context in a stack. When a sub transaction begins, the parent propagation context must be stored in a stack.

resume

public void resume(Control which)
If the parameter is a null object reference, the client thread becomes associated with no transaction. Otherwise, if the parameter is valid in the current execution environment, the client thread becomes associated with that transaction (in place of any previous transaction). Otherwise, the InvalidControl exception is raised. This operation is not dependent on the state of the transaction; in particular, it does not raise the TRANSACTION_ROLLEDBACK exception.

rollback

public void rollback()
If there is no transaction associated with the client thread, the NoTransaction exception is raised. If the client thread does not have permission to rollback the transaction, the standard exception NO_PERMISSION is raised. (The rollback operation may be restricted to the transaction originator in some implementations; however, the rollback_only operation, described below, is available to all transaction participants.) Otherwise, the transaction associated with the client thread is rolled back. The effect of this request is equivalent to performing the rollback operation on the corresponding Terminator object. The client thread transaction context is modified as follows: If the transaction was begun by a thread (invoking begin) in the same execution environment, then the thread?s transaction context is restored to its state prior to the begin request. Otherwise, the thread?s transaction context is set to null.

rollback_only

public void rollback_only()
If there is no transaction associated with the client thread, the NoTransaction exception is raised. Otherwise, the transaction associated with the client thread is modified so that the only possible outcome is to rollback the transaction. The effect of this request is equivalent to performing the rollback_only operation on the corresponding Coordinator object.

set_timeout

public void set_timeout(int seconds)
This operation modifies a state variable associated with the target object that affects the time-out period associated with top-level transactions created by subsequent invocations of the begin operation. If the parameter has a nonzero value n, then top-level transactions created by subsequent invocations of begin will be subject to being rolled back if they do not complete before n seconds after their creation. If the parameter is zero, then no application specified time-out is established.

suspend

public Control suspend()
If the client thread is not associated with a transaction, a null object reference is returned. Otherwise, an object is returned that represents the transaction context currently associated with the client thread. This object can be given to the resume operation to reestablish this context in the same thread or a different thread. The scope within which this object is valid is implementation dependent; at a minimum, it must be usable by the client thread. In addition, the client thread becomes associated with no transaction. This operation is not dependent on the state of the transaction; in particular, it does not raise the TRANSACTION_ROLLEDBACK exception.
Original code is Copyright (c) 1999-2001, Intalio, Inc. All Rights Reserved. Contributions by MetaBoss team are Copyright (c) 2003-2005, Softaris Pty. Ltd. All Rights Reserved.