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How to model diagram connections using xml attributes [message #1690548]

Sat, 28 March 2015 11:01

Eclipse User

Hello,

My XML model contains directed edges expressed as "references by ID" in an attribute.

Example:

<step id="a" next="b"/>
<step id="b"/>

which means a connection (directed edge) from a to b.

How can I do this with Sapphire? So far I found only how to model connections using xml elements, not attributes.

Thanks in advance.

Re: How to model diagram connections using xml attributes [message #1690685 is a reply to message #1690548]

Mon, 30 March 2015 11:34

Eclipse User

In your Sapphire model, you can declare a list property for all the steps using a custom bind list. The use that list in your diagram's connection binding.

Here is an example of a custom bind list:

// *** ControlFlowRules ***

@Type( base = IControlFlowRule.class )
@CustomXmlListBinding( impl = ControlFlowRuleListBinding.class )

ListProperty PROP_CONTROL_FLOW_RULES = new ListProperty( TYPE, "ControlFlowRules" );

ElementList<IControlFlowRule> getControlFlowRules();

Re: How to model diagram connections using xml attributes [message #1690703 is a reply to message #1690685]

Mon, 30 March 2015 12:53

Eclipse User

You have two options:

1. Mold the model to conform to existing declarative patterns for diagram connections by using a custom binding to create a list around the attribute.

2. Implement a custom ConnectionService and attach it to the diagram in sdef. This approach might be more straight-forward in your scenario.

Re: How to model diagram connections using xml attributes [message #1691183 is a reply to message #1690703]

Thu, 02 April 2015 18:22

Eclipse User

Regarding the option 2., I suppose I cannot use StandardConnectionService but have to implement my own ConnectionService. Which means I have to implement also my own DiagramConnectionPart and IDiagramConnectionDef, right? Or is there an more straightforward way I am missing?

Thank you.

Re: How to model diagram connections using xml attributes [message #1691188 is a reply to message #1691183]

Thu, 02 April 2015 20:27

Eclipse User

Yes, you'd have to implement at least DiagramConnectionPart. The logic that maps your model concept to diagram connections would reside in your ConnectionService and DiagramConnectionPart implementations.

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