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org.eclipse.emf.transaction.impl
Class TransactionalCommandStackImpl

java.lang.Object
  extended by 

org.eclipse.emf.common.command.BasicCommandStack
      extended by 

org.eclipse.emf.transaction.impl.AbstractTransactionalCommandStack
          extended by 
org.eclipse.emf.transaction.impl.TransactionalCommandStackImpl
All Implemented Interfaces:
CommandStack, InternalTransactionalCommandStack, TransactionalCommandStack

public class TransactionalCommandStackImpl
extends AbstractTransactionalCommandStack

The default implementation of the transactional editing domain command stack.


Field Summary
 
Fields inherited from class org.eclipse.emf.transaction.impl. AbstractTransactionalCommandStack
exceptionHandler
 
Fields inherited from class org.eclipse.emf.common.command. BasicCommandStack
commandList, listeners, mostRecentCommand, saveIndex, top
 
Constructor Summary
TransactionalCommandStackImpl ()
          Initializes me.
 
Method Summary
 boolean canRedo ()
          Extends the inherited implementation to consider the redoability of ConditionalRedoCommands.
  EMFCommandTransaction createTransaction ( Command command, Map<?,?> options)
          Creates a read/write transaction in my editing domain for the purpose of executing the specified command.
 void dispose ()
          Disposes of my state and any additional resources that I may be retaining.
protected  void doExecute ( Command command, Map<?,?> options)
          Implemented by subclasses to perform the execution of the specified command.
 void executeTriggers ( Command command, List< Command> triggers, Map<?,?> options)
          Executes the specified list of trigger commands.
protected  void handleRollback ( Command command, RollbackException rbe)
          Extends the superclass implementation to first pop the failed command off of the stack, if it was already appended.
 void redo ()
          Extends the inherited implementation by invoking it within the context of a redo transaction (a read/write transaction with the undo/redo options).
 void undo ()
          Extends the inherited implementation by invoking it within the context of an undo transaction (a read/write transaction with the undo/redo options).
 
Methods inherited from class org.eclipse.emf.transaction.impl. AbstractTransactionalCommandStack
basicExecute, execute, execute, getDomain, getExceptionHandler, getUndoRedoOptions, handleError, makeTriggerTransactionOptions, rollback, setEditingDomain, setExceptionHandler
 
Methods inherited from class org.eclipse.emf.common.command. BasicCommandStack
addCommandStackListener, canUndo, flush, getMostRecentCommand, getRedoCommand, getUndoCommand, isSaveNeeded, notifyListeners, removeCommandStackListener, saveIsDone
 
Methods inherited from class java.lang. Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.eclipse.emf.common.command. CommandStack
addCommandStackListener, canUndo, flush, getMostRecentCommand, getRedoCommand, getUndoCommand, removeCommandStackListener
 

Constructor Detail

TransactionalCommandStackImpl

public TransactionalCommandStackImpl()
Initializes me.

Method Detail

doExecute

protected void doExecute(
Command command,
                         
Map<?,?> options)
                  throws 
InterruptedException,
                         
RollbackException
Implemented by subclasses to perform the execution of the specified command. Invoked by the AbstractTransactionalCommandStack.execute(Command, Map) method.

Specified by:
doExecute in class AbstractTransactionalCommandStack
Parameters:
command - the command to execute
options - the transaction options to apply to execution of the command
Throws:
InterruptedException - if the current thread is interrupted while waiting to start the transaction
RollbackException - if the execution of the command is rolled back
Since:
1.1

handleRollback

protected void handleRollback(
Command command,
                              
RollbackException rbe)
Extends the superclass implementation to first pop the failed command off of the stack, if it was already appended.

Overrides:
handleRollback in class AbstractTransactionalCommandStack
Parameters:
command - the command whose execution was rolled back (may be null if not known)
rbe - the roll-back exception (may be null if no exception is to be thrown)
Since:
1.1

undo

public void undo()
Extends the inherited implementation by invoking it within the context of an undo transaction (a read/write transaction with the undo/redo options).

Specified by:
undo in interface CommandStack
Overrides:
undo in class BasicCommandStack

canRedo

public boolean canRedo()
Extends the inherited implementation to consider the redoability of ConditionalRedoCommands.

Specified by:
canRedo in interface CommandStack
Overrides:
canRedo in class BasicCommandStack

redo

public void redo()
Extends the inherited implementation by invoking it within the context of a redo transaction (a read/write transaction with the undo/redo options).

Specified by:
redo in interface CommandStack
Overrides:
redo in class BasicCommandStack

createTransaction

public 
EMFCommandTransaction createTransaction(
Command command,
                                               
Map<?,?> options)
                                        throws 
InterruptedException
Description copied from interface: InternalTransactionalCommandStack
Creates a read/write transaction in my editing domain for the purpose of executing the specified command. The resulting transaction is expected to be started when it is returned (hence the possibility of interruption).

Parameters:
command - a command that I need to execute
options - the options to apply to the resulting transaction
Returns:
the command transaction
Throws:
InterruptedException - if the current thread is interrupted while waiting for the transaction to start
See Also:
InternalTransactionalCommandStack.getDomain()

executeTriggers

public void executeTriggers(
Command command,
                            
List<
Command> triggers,
                            
Map<?,?> options)
                     throws 
InterruptedException,
                            
RollbackException
Description copied from interface: InternalTransactionalCommandStack
Executes the specified list of trigger commands. All of the commands are executed within a single child transaction of the transaction that executed the triggering command; they must not be "piggy-backed" on the currently active transaction.

Parameters:
command - the command whose execution triggered additional commands (from pre-commit listeners)
triggers - a list of zero or more Commands to execute. If there are none, then no transaction needs to be started
options - the options to apply to the child transaction
Throws:
InterruptedException - if the current thread is interrupted while waiting for the trigger transaction to start
RollbackException - if the trigger transaction rolls back on commit
See Also:
ResourceSetListener.transactionAboutToCommit(org.eclipse.emf.transaction.ResourceSetChangeEvent), InternalTransactionalCommandStack.createTransaction(Command, Map)

dispose

public void dispose()
Description copied from interface: InternalTransactionalCommandStack
Disposes of my state and any additional resources that I may be retaining. I am only disposed when my editing domain is disposed.


Copyright 2002, 2007 IBM Corporation and others.
All Rights Reserved.


 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire