Hello,
Thanks for the quick answer.
I have looked to the code I am using: it is the one of the official acceleo maven plugin
org.eclipse.acceleo.maven-tests, I have have just made a checkout of it:
http://git.eclipse.org/c/m2t/org.eclipse.acceleo.git/tree/tests/org.eclipse.acceleo.maven.tests/src/main/java/org/eclipse/acceleo/module/example/uml2java/helios/GenerateJava.java
from the git reprository
(I have just added the system outprint to be sure where It goes through B )
The method you are referencing me seems to be there
Nevertheless, I am getting the error
I get one error:
The generation failed to generate any file because there are no model elements that matches at least the type of the first parameter
of one of your main templates.
The problem may be caused by a problem with the registration of your metamodel, please see the method named "registerPackages" in the
Java launcher of your generator. It could also come from a missing [comment @main/]
in the template used as the entry point of the generation.
Francois
Code extracted from
http://git.eclipse.org/c/m2t/org.eclipse.acceleo.git/tree/tests/org.eclipse.acceleo.maven.tests/src/main/java/org/eclipse/acceleo/module/example/uml2java/helios/GenerateJava.java
/**
* Updates the registry used for looking up a package based
namespace, in the resource set.
*
*
@param resourceSet
* is the resource set
*
@generated
*/
@Override
public
void registerPackages(ResourceSet
resourceSet) {
System.out.println("A");
super.registerPackages(resourceSet);
if (!isInWorkspace(org.eclipse.uml2.uml.UMLPackage.class))
{
System.out.println("B");
resourceSet.getPackageRegistry().put(org.eclipse.uml2.uml.UMLPackage.eINSTANCE.getNsURI(),
org.eclipse.uml2.uml.UMLPackage.eINSTANCE);
}
else{
System.out.println("C");
}
/*
*
TODO If you need additional package registrations, you can register them here.
The following line
* (in comment) is an example of the package registration for UML. If you want to change the content
* of this method, do NOT forget to change the "@generated" tag in the
Javadoc of this method to
* "@generated NOT". Without this new tag, any compilation of the
Acceleo module with the main template
* that has caused the creation of this class will revert your modifications. You can use the method
* "isInWorkspace(Class c)" to check if the package that you are about to register is in the workspace.
* To register a package properly, please follow the following conventions:
*
* if (!isInWorkspace(UMLPackage.class)) {
* // The normal package registration if your
metamodel is in a plugin.
* resourceSet.getPackageRegistry().put(UMLPackage.eNS_URI, UMLPackage.eINSTANCE);
* } else {
* // The package registration that will be used if the
metamodel is not deployed in a plugin.
* // This should be used if your
metamodel is in your workspace and if you are using binary resource serialization.
* resourceSet.getPackageRegistry().put("/myproject/myfolder/mysubfolder/MyUMLMetamodel.ecore",
UMLPackage.eINSTANCE);
* }
*
* To learn more about Package Registration, have a look at the
Acceleo Launcher documentation (Help -> Help Contents).
*/
}
De : m2t-dev-bounces@xxxxxxxxxxx [mailto:m2t-dev-bounces@xxxxxxxxxxx]
De la part de Stéphane Bégaudeau
Envoyé : jeudi 20 novembre 2014 10:26
À : Model to Text
Objet : Re: [m2t-dev] acceleo maven plugin
Hi,
You need to register your metamodel in the Java launcher of your generator (the Java class generated next to your main module) in its registerPackages method. You can see an example on Github [1].
Dear Accelo maven plugin community,
I have just tried to setp up a small example of accelo maven plugin.
The generation failed to generate any file because there are no model elements that matches at least the type of the first parameter of one of your main templates.
The problem may be caused by a problem with the registration of your metamodel, please see the method named "registerPackages" in the Java launcher of your generator. It
could also come from a missing [comment @main/]
in the template used as the entry point of the generation.
I have used the example maven project /org.eclipse.acceleo.maven.tests
When I run the mvn install, it generates well the class, the emlt files and the artifact.
Then I have created a small maven project with an uml model, the same of the example
I have defined in my pom the call of the previous plugin.
<groupId>org.eclipse.acceleo</groupId>
<artifactId>org.eclipse.acceleo.maven.launcher</artifactId>
<version>3.5.0-SNAPSHOT</version>
<phase>process-resources</phase>
<goal>acceleo-launcher</goal>
<generatorClass>org.eclipse.acceleo.module.example.uml2java.helios.GenerateJava</generatorClass>
<model>${basedir}\src\main\model\example.uml</model>
<outputFolder>${basedir}\src</outputFolder>
<dependencies>
<dependency>
<groupId>org.eclipse.acceleo</groupId>
<artifactId>org.eclipse.acceleo.maven-test</artifactId>
<version>3.6.0-SNAPSHOT</version>
But whatever I do it generates the error
please see the method named "registerPackages" in the Java launcher of your generator. It could also come from a missing [comment @main/]
I have checked that in my /org.eclipse.acceleo.maven.tests/src/main/java/org/eclipse/acceleo/module/example/uml2java/helios/generateJava.mtl
I have the following lines:
[template public generateClass(c : Class)]
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