1 install eclipse (helios) software :
2 create a new Xpand project (use wizzard)
Then, add dependencies :
- org.eclipse.emf.mwe2.launch,
- org.eclipse.xtext
3 get an emf model
See Vogel Lars tutorial to do your own model
4 create an mwe2 workflow (use wizzard)
Add components
- (EMF) reader
- (Xpand2) generator
I create a workflow called "engine.mwe2" in frk.generator package module frk.generator.engine
1 import org.eclipse.emf.mwe.utils.*
2 var targetDir = "src-gen"
3 Workflow {
4 component = Reader {
5 modelSlot ="mymodel"
6 uri="src/MyFirst.app"
7 firstElementOnly = true
8 }
9
10 component = org.eclipse.xpand2.Generator {
11 metaModel = org.eclipse.xtend.typesystem.emf.EmfMetaModel
12 {
13 metaModelPackage="app.AppPackage"
14 }
15 expand = "frk::template::Root::root FOR mymodel"
16 outlet = {
17 path = "${targetDir}"
18 overwrite = true
19 }
20 fileEncoding = "ISO-8859-1"
21 }
22}
4 : EMF reader component
10 : Generator calling Xpand
5 create a Java Class
package frk.xtend;
public class CreatePluginProject {
public static void createPluginProjectMeth(String name) {
System.out.println("project created " + name);
}
public static String createPluginProjectMethString(
String name)
{
System.out.println("project " + name + " created from
method ");
return "a string";
}
}
6 create an Xtend extension
createPluginProjectMeth(String name):
JAVA
frk.xtend.CreatePluginProject.createPluginProjectMeth(java.lang.String);
String createPluginProjectMethString(String name):
JAVA
frk.xtend.CreatePluginProject.createPluginProjectMethString(java.lang.String);
7 create an Xpand template
In the package frk.template I create Root.xpt
1<IMPORT app>
2<EXTENSION frk::xtend::createProject>
3
4<DEFINE root FOR app::App>
5<createPluginProjectMethString("AAA")>
6<ENDDEFINE>
2 : Add the xtend declaration
5 : call the Java method via xtend
Finally, run the workflow and it should work.
