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Change domain model when diagram was opened [message #1001805]

Thu, 17 January 2013 07:00

Eclipse User

Hi, I want to do the following:

When I open a diagram, I wan't to change the domain-model. For example, when I open the diagram, I wan't to add some new elements to an existing element (e.g. Ports to an Element)

I tried to add a method "modifyModel" within my DiagramEditPart's constructor:

public AnalysisFunctionTypeEditPart(View view) {
 super(view);
 modifyModel();

and in modifyModel, I do:

AddCommand addCmd = new AddCommand(getEditingDomain(), list, value);
addCmd.execute();

However, I always get:

java.lang.IllegalStateException: Cannot activate read/write transaction in read-only transaction context
	at org.eclipse.emf.transaction.impl.TransactionalEditingDomainImpl.acquire(TransactionalEditingDomainImpl.java:576)
	at org.eclipse.emf.transaction.impl.TransactionalEditingDomainImpl.activate(TransactionalEditingDomainImpl.java:508)
	at org.eclipse.emf.transaction.impl.TransactionImpl.start(TransactionImpl.java:204)
	at org.eclipse.emf.workspace.impl.WorkspaceCommandStackImpl.createTransaction(WorkspaceCommandStackImpl.java:380)
	at org.eclipse.emf.workspace.EMFCommandOperation.createTransaction(EMFCommandOperation.java:215)
...

can you help me ?

Re: Change domain model when diagram was opened [message #1001818 is a reply to message #1001805]

Thu, 17 January 2013 07:16

Eclipse User

Hi,

are you sure that you don't want to use Feature Seq Initializer instead?

In your case you need to execute the command in a transactional editing domain. Something like getEditingDomain().getCommandStack().execute(addCmd)

Regards,

Re: Change domain model when diagram was opened [message #1001820 is a reply to message #1001818]

Thu, 17 January 2013 07:23

Eclipse User

I tried

TransactionalEditingDomain editingDomain = SharedEditingDomainUtil.getSharedEditingDomain("EASTADLSharedEditingDomain");
AddCommand addCmd = new AddCommand(editingDomain, prototype.getProxyPorts(), proxyPort);
CommandStack commandStack = editingDomain.getCommandStack();
commandStack.execute(addCmd);

same result Sad

Re: Change domain model when diagram was opened [message #1001821 is a reply to message #1001818]

Thu, 17 January 2013 07:23

Eclipse User

I tried

TransactionalEditingDomain editingDomain = SharedEditingDomainUtil.getSharedEditingDomain("EASTADLSharedEditingDomain");
AddCommand addCmd = new AddCommand(editingDomain, prototype.getProxyPorts(), proxyPort);
CommandStack commandStack = editingDomain.getCommandStack();
commandStack.execute(addCmd);

same result Sad

Re: Change domain model when diagram was opened [message #1002364 is a reply to message #1001821]

Fri, 18 January 2013 08:18

Eclipse User

Hi Matthias,

your code should look like this:

TransactionalEditingDomain domain = TransactionUtil.getEditingDomain(prototype);
Command addCmd = AddCommand.createAddCommand.create(domain, prototype, XXXPackage.eINSTANCE.getPrototype_ProxyPorts(), proxyPort);
domain.getCommandStack().execute(addCmd);

Ralph

[Updated on: Fri, 18 January 2013 08:18] by Moderator

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