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Use dependency injection instead of singletons for services [message #553713]

Wed, 18 August 2010 14:56

Ken Wenzel

Messages: 51
Registered: July 2009

Member

Hello,

instead of using singletons for Graphiti's services which are accessed by Graphiti.getGaService() and others, dependency injection would open the possibility of replacing the standard services by user-defined ones.

Does the Graphiti team plan to use Guice or other frameworks for dependency injection?

Best regards,

Ken

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Re: Use dependency injection instead of singletons for services [message #553859 is a reply to message #553713]

Thu, 19 August 2010 08:24

Michael Wenz

Messages: 1931
Registered: July 2009
Location: Walldorf, Germany

Senior Member

Hello Ken,

thanks for this suggestion. As always it is a good approach to seperate API
from implementation, e.g. by using dependency injection.

Nevertheless, currently we see our services more or less as a static
offering towards the tools. So, at least currently we don't have plans in
this respect. Do you have a concrete usecase in which you would need this?

Best regards,
Michael

"Ken Wenzel" <kenwenzel@gmx.net> wrote in message
news:i4gsb3$7nd$1@build.eclipse.org...
> Hello,
>
> instead of using singletons for Graphiti's services which are accessed by
> Graphiti.getGaService() and others, dependency injection would open the
> possibility of replacing the standard services by user-defined ones.
>
> Does the Graphiti team plan to use Guice or other frameworks for
> dependency injection?
>
> Best regards,
>
> Ken

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Re: Use dependency injection instead of singletons for services [message #553864 is a reply to message #553859]

Thu, 19 August 2010 08:54

Ken Wenzel

Messages: 51
Registered: July 2009

Member

Hello Michael,

the idea was to replace IPeCreateService and IGaCreateService to provide alternative implementations of Graphiti's diagram model.

Best regards,

Ken

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Re: Use dependency injection instead of singletons for services [message #554096 is a reply to message #553864]

Fri, 20 August 2010 07:27

Michael Wenz

Messages: 1931
Registered: July 2009
Location: Walldorf, Germany

Senior Member

With Tim's idea how to solve that, you might not need to do this. I'm also
curious, just let me know if that works....

Best regards,
Michael

"Ken Wenzel" <kenwenzel@gmx.net> wrote in message
news:i4irfo$fma$1@build.eclipse.org...
> Hello Michael,
>
> the idea was to replace IPeCreateService and IGaCreateService to provide
> alternative implementations of Graphiti's diagram model.
>
> Best regards,
>
> Ken

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Re: Use dependency injection instead of singletons for services [message #563539 is a reply to message #553859]

Thu, 19 August 2010 08:54

Ken Wenzel

Messages: 51
Registered: July 2009

Member

Hello Michael,

the idea was to replace IPeCreateService and IGaCreateService to provide alternative implementations of Graphiti's diagram model.

Best regards,

Ken

Report message to a moderator

Re: Use dependency injection instead of singletons for services [message #563611 is a reply to message #563539]

Fri, 20 August 2010 07:27

Michael Wenz

Messages: 1931
Registered: July 2009
Location: Walldorf, Germany

Senior Member

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