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Maintaining shape properties after closing the diagram [message #1117308]

Thu, 26 September 2013 09:51

Fabio Messina

Messages: 9
Registered: July 2013

Junior Member

Hello.

In my Graphiti project I use shape properties to trace some elements which have no business objects linked to them.
In my add feature I have the following code.

AddActivationRectangleFeature.java

Property property = MmFactory.eINSTANCE.createProperty();
property.setKey("type");
property.setValue("activationrectangle");
containerShape.getProperties().add(0, property);

...and in my feature provider I do the selection in order to return some customized features.

if (!pictogramElement.getProperties().isEmpty() && pictogramElement.getProperties().get(0).getValue() == "activationrectangle") {
	return new LayoutActivationRectangleFeature(this);
	}

This seemed to work well: when i try to resize my activation rectangle the right LayoutFeature is returned and I have my custom behaviour.

But (the problem) I noticed that this does not work when I open my diagram for later edits. It looks like shape properties are lost after I close the diagram file.
Why? How can I manage to return the right features if I cant count on properties?

Thank you.

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Re: Maintaining shape properties after closing the diagram [message #1121120 is a reply to message #1117308]

Mon, 30 September 2013 09:37

Albert Hofkamp

Messages: 41
Registered: August 2009

Member

Testing string equality with object identity seems a bit dangerous to me, does changing == to .equals solve your problem?

A check you also may want to do is whether your properties get stored in the file, that is, is there an xml node with "activationrectangle" in it?

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Re: Maintaining shape properties after closing the diagram [message #1122066 is a reply to message #1121120]

Tue, 01 October 2013 07:42

Fabio Messina

Messages: 9
Registered: July 2013

Junior Member

Albert Hofkamp wrote on Mon, 30 September 2013 05:37

Testing string equality with object identity seems a bit dangerous to me, does changing == to .equals solve your problem?

You're absolutely right. My fault, I was sure that there was an overloading of the == operator for String objects but it isn't so. That's why it worked only inside a session... i was checking for equality of the references.

Thank you very much. Solved.

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