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resource [message #416931]

Wed, 20 February 2008 16:15

Messages: 75
Registered: July 2009

Member

Hello,

import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
public class merge {
public static void main(String[] args) {
URI uri = URI.createFileURI("C:/uml.ecore");
Resource res =
Resource.Factory.Registry.INSTANCE.getFactory(uri).createRes ource(uri);
}}

I got NullPointerException for this so short code.
I use simple java with plugin dependencies, and I would like to create a
file using uri, resource.
What should be the mistake and how can I repair it?

Regards,
Attila

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Re: resource [message #416934 is a reply to message #416931]

Wed, 20 February 2008 17:39

Marcelo Paternostro

Messages: 602
Registered: July 2009

Senior Member

Hi Attila,

When you are not executing your code as an Eclipse bundle, you need to
do a few registrations by hand. There is an FAQ entry on this topic:
http://wiki.eclipse.org/index.php/EMF-FAQ#How_do_I_use_EMF_i n_standalone_applications_.28such_as_an_ordinary_main.29.3F

Cheers,
Marcelo

Attila wrote:
> Hello,
>
> import org.eclipse.emf.common.util.URI;
> import org.eclipse.emf.ecore.resource.Resource;
> public class merge {
> public static void main(String[] args) {
> URI uri = URI.createFileURI("C:/uml.ecore");
> Resource res =
> Resource.Factory.Registry.INSTANCE.getFactory(uri).createRes ource(uri);
> }}
>
> I got NullPointerException for this so short code.
> I use simple java with plugin dependencies, and I would like to create a
> file using uri, resource.
> What should be the mistake and how can I repair it?
>
> Regards,
> Attila
>

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Re: resource [message #416942 is a reply to message #416934]

Wed, 20 February 2008 19:01

Messages: 75
Registered: July 2009

Member

Hello,

I tried put e.g. this line in the beginning of the file,
Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap( ).put( "library",
new XMIResourceFactoryImpl());
but I got an error despite having correct plug-in dependencies.
Do I have to register every line where needed, or only once?

What should I modify in this code to be operable?

And what about bundle?

Regards,
Attila

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Re: resource [message #416943 is a reply to message #416942]

Wed, 20 February 2008 19:02

Eike Stepper

Messages: 6682
Registered: July 2009

Senior Member

Attila,

In your first example you try to load a file with extension "ecore". Why do you register the factory for extension "library"?

/Eike

Attila schrieb:
> Hello,
>
>
> I tried put e.g. this line in the beginning of the file,
> Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap( ).put( "library",
> new XMIResourceFactoryImpl());
> but I got an error despite having correct plug-in dependencies. Do I
> have to register every line where needed, or only once?
> What should I modify in this code to be operable?
> And what about bundle?
>
> Regards,
> Attila
>

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper

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Re: resource [message #416944 is a reply to message #416943]

Wed, 20 February 2008 19:16

Messages: 75
Registered: July 2009

Member

Hello,

I am new in EMF, and I don't know what should I do, but this is only a
short code and I would like to create a file.

Regards,
Attila

Report message to a moderator

Re: resource [message #416945 is a reply to message #416944]

Wed, 20 February 2008 19:42

Marcelo Paternostro

Messages: 602
Registered: July 2009

Senior Member

Hi Attila,

If you generate the tests plug-in, you will get a Java file called
<YourModel>Example.java. This implements a stand-alone application that
loads and saves instances of your model. It may be a good place to
start if you are a bit lost now.

Going through the tutorials and articles in our documentation page is
also recommended. You could also read the EMF book (the draft of the
2nd version is available as a rough cut at Safari).

Cheers,
Marcelo

Attila wrote:
> Hello,
>
> I am new in EMF, and I don't know what should I do, but this is only a
> short code and I would like to create a file.
>
> Regards,
> Attila
>

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