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How to create attributes using EMF API ? [message #757936]

Wed, 16 November 2011 13:26

Eclipse User

I have an ecore model of a maven Pom (attached).

I build instances of the model using the API, usually without issue.

I need to create:

<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugins>
<build>

The EMF model has a number of Configuration types, each with a getAny()
method returning a FeatureMap.

How can I add the <source>1.6</source> and <target>1.6</target> Features ?

ala:
Model model = PomFactory.eINSTANCE.createModel();
model.setArtifactId(module.getName());
model.setGroupId("com.ebay." + module.getPath());
model.setName(module.getName());
model.setPackaging("jar");
model.setVersion("1.0.0");

......

Build build = PomFactory.eINSTANCE.createBuild();
model.setBuild(build);
PluginsType2 plugins = PomFactory.eINSTANCE.createPluginsType2();
build.setPlugins(plugins);
Plugin plugin = PomFactory.eINSTANCE.createPlugin();
plugins.getPlugin().add(plugin);

plugin.setGroupId("org.apache.maven.plugins");
plugin.setArtifactId("maven-compiler-plugin");
ConfigurationType2 configurationType2 = plugin.getConfiguration();
if (null == configurationType2) {
configurationType2 =
PomFactory.eINSTANCE.createConfigurationType2();
plugin.setConfiguration(configurationType2);
}

FeatureMap featureMap = configurationType2.getAny();

EAttribute sourceAttribute =
PomPackage.eINSTANCE.getConfigurationType2_Any();
sourceAttribute.setName("source");

featureMap.add(sourceAttribute, <?????>); // <-- is this even
close to being right ?

I'm not sure what types I need to create and add to the featureMap, or
even if I'm on the right track.

Thanks!!!!!

Roy

Attachment: pom.ecore
(Size: 211.77KB, Downloaded 497 times)

Re: How to create attributes using EMF API ? [message #757937 is a reply to message #757936]

Thu, 17 November 2011 02:22

Eclipse User

Roy,

Please use eclipse.tools.emf for EMF questions.

More comments below.

On 16/11/2011 7:26 PM, Roy Benjamin wrote:
> I have an ecore model of a maven Pom (attached).
>
> I build instances of the model using the API, usually without issue.
>
> I need to create:
>
> <build>
> <plugins>
> <plugin>
> <groupId>org.apache.maven.plugins</groupId>
> <artifactId>maven-compiler-plugin</artifactId>
> <configuration>
> <source>1.6</source>
> <target>1.6</target>
> </configuration>
> </plugin>
> <plugins>
> <build>
>
> The EMF model has a number of Configuration types, each with a
> getAny() method returning a FeatureMap.
>
> How can I add the <source>1.6</source> and <target>1.6</target>
> Features ?
Are there global elements declarations for this?

This article should be helpful to answer your question:
http://www.theserverside.com/news/1364302/Binding-XML-to-Java
>
>
>
> ala:
> Model model = PomFactory.eINSTANCE.createModel();
> model.setArtifactId(module.getName());
> model.setGroupId("com.ebay." + module.getPath());
> model.setName(module.getName());
> model.setPackaging("jar");
> model.setVersion("1.0.0");
>
> .....
>
> Build build = PomFactory.eINSTANCE.createBuild();
> model.setBuild(build);
> PluginsType2 plugins = PomFactory.eINSTANCE.createPluginsType2();
> build.setPlugins(plugins);
> Plugin plugin = PomFactory.eINSTANCE.createPlugin();
> plugins.getPlugin().add(plugin);
>
> plugin.setGroupId("org.apache.maven.plugins");
> plugin.setArtifactId("maven-compiler-plugin");
> ConfigurationType2 configurationType2 = plugin.getConfiguration();
> if (null == configurationType2) {
> configurationType2 =
> PomFactory.eINSTANCE.createConfigurationType2();
> plugin.setConfiguration(configurationType2);
> }
>
> FeatureMap featureMap = configurationType2.getAny();
>
> EAttribute sourceAttribute =
> PomPackage.eINSTANCE.getConfigurationType2_Any();
> sourceAttribute.setName("source");
>
> featureMap.add(sourceAttribute, <?????>); // <-- is this even
> close to being right ?
No. The first argument will generally be something like
PomPackage.Literals.DOCUMENT_ROOT__<FOO>, where FOO is probably SOURCE
because there will be a global element called source.
>
> I'm not sure what types I need to create and add to the featureMap, or
> even if I'm on the right track.
>
> Thanks!!!!!
>
>
> Roy
>
>
>
>
>
>
>
>
>
>

Re: How to create attributes using EMF API ? [message #757938 is a reply to message #757936]

Thu, 17 November 2011 09:39

Eclipse User

Hello Benjamin,

The good practive would be that your pom.ecore contained the right
entries for these attribute so that you could manipulate then using
setSource or PomPackage.Literals.CONFIGURATION_SOURCE EAttribute.

If you cannot modify your .ecore to support this, then you are in a
tricky situation. I found a way to leverage EFeatureMaps to support
3rd-party extensions in your models. this is the issue described here:
http://www.eclipsecon.org/2012/sessions/hack-emf-models-support-vendor-specific-attributes

Is this your use-case?
--
http://mickaelistria.wordpress.com
http://twitter.com/#!/mickaelistria
http://www.petalslink.com

Re: How to create attributes using EMF API ? [message #757939 is a reply to message #757938]

Thu, 17 November 2011 12:14

Eclipse User

Hi Ed,

Possibly. I generated the ecore model from the pom xsd so I'd prefer
not to modify it... but it had occurred to me to do so. My guess is
this issue could arise from other xsd to ecore use cases.

Thanks!

Roy

On 11/17/2011 6:39 AM, Mickael Istria wrote:
> Hello Benjamin,
>
> The good practive would be that your pom.ecore contained the right
> entries for these attribute so that you could manipulate then using
> setSource or PomPackage.Literals.CONFIGURATION_SOURCE EAttribute.
>
> If you cannot modify your .ecore to support this, then you are in a
> tricky situation. I found a way to leverage EFeatureMaps to support
> 3rd-party extensions in your models. this is the issue described here:
> http://www.eclipsecon.org/2012/sessions/hack-emf-models-support-vendor-specific-attributes
>
>
> Is this your use-case?

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