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Create Relation Edge through Java Service [message #1770996] Sun, 20 August 2017 20:45 Go to next message
Linfei Yu is currently offline Linfei YuFriend
Messages: 1
Registered: August 2017
Junior Member

I would like to draw a link between two elements of my model by using java Services.

I have 2 elements E1 and E2, and there are several element between E1 and E2. if I dig during a few moment, I can find a link between them.

I want to find a link between them but using a java Service.

My question is : What are the "return type" and method parameter of target finder expression using java services?

Thanks for your answer!
Re: Create Relation Edge through Java Service [message #1771155 is a reply to message #1770996] Tue, 22 August 2017 14:41 Go to previous messageGo to next message
Julien Dupont is currently offline Julien DupontFriend
Messages: 172
Registered: July 2009
Senior Member
Hi Linfel,

I'm not sure uderstand why you need a java services.
Where do you want call the java service? In the edge mapping? In which field (Target Finder Expression?)

Re: Create Relation Edge through Java Service [message #1771238 is a reply to message #1771155] Wed, 23 August 2017 08:27 Go to previous message
Amine Kechaou is currently offline Amine KechaouFriend
Messages: 32
Registered: April 2016
Location: Karlsruhe, Germany
Hi Linfei,

maybe you don't need a Java Service. You can probably do this with an aql expression in the Target Finder field.

Understand it this way: For a fixed E1, what are the objects E2, that should be linked? The expression must return either an E2 object or a collection containing several E2 objects.

You have access to multiple variables in the field to help you find E2, especially the self variable, which references E1.

Best Regards,
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