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Accessing XText project classes from the runtime eclipse [message #1719444]

Fri, 08 January 2016 00:56

Larry LeBron

Messages: 124
Registered: October 2015

Senior Member

I am struggling with allowing my DSL-generated-code to access classes which are written in my XText Xbase project. Specifically, I'm having this issue while trying to program a project with my dsl's xtext nature, in runtime eclipse.

For example, let's say this class is in my XText project:

package org.xtext.mydsl;

public class SuperEntity {
   public SuperEntity() {...}
}

Now let's say my jvmModelInferrer includes something like:

	def dispatch void infer(Entity entity, IJvmDeclaredTypeAcceptor acceptor, boolean isPreIndexingPhase) {

		acceptor.accept(entity.toClass(entity.name)) [
			superTypes += typeRef(org.xtext.mydsl.SuperEntity)
		]

How can I properly export the SuperEntity class (or ideally its containing package), so that the generated source will properly compile in runtime eclipse? Is there a way to do this via the xtext project's manifest? Ideally, I'd be able to reference the package directly vs. having to build a jar.

Thanks (yet again!).

[Updated on: Fri, 08 January 2016 08:41]

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Re: Accessing XText project classes from the runtime [message #1719455 is a reply to message #1719444]

Fri, 08 January 2016 07:47

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi i dont Unterstand this. Put the SuperEntity on the classpath of the mydsl file and you are done

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Accessing XText project classes from the runtime [message #1719467 is a reply to message #1719455]

Fri, 08 January 2016 08:47

Larry LeBron

Messages: 124
Registered: October 2015

Senior Member

Sorry, I've edited the original question in an attempt to clarify.

I am specifically talking about accessing code from my xtext project while using my dsl in runtime eclipse (via run as->eclipse application).

For example, using the code above, imagine I've created a new project in runtime eclipse, with my xtext nature. As soon as I complete a valid "Entity" in a .mydsl file, xtext will generate source code with a reference to org.xtext.mydsl.SuperEntity.

So, I'm trying to figure out how to make that SuperEntity class accessible to the project in the eclipse runtime project so it can compile.

Obviously, I could manually import the project into that workspace and add it to the buildpath of my dsl project, but I assumed there would be a way to automatically include packages for projects that will use my dsl. Maybe that's an incorrect assumption?

Hopefully that makes more sense!

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Re: Accessing XText project classes from the runtime [message #1719469 is a reply to message #1719467]

Fri, 08 January 2016 08:58

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

hi,

- the project in the runtime eclipse has to be a java project with xtext nature
- the project need a jar containing org.xtext.mydsl.SuperEntity on the classpath (e.g. in a libary jar)
- if you use xbase expressions it needs xbase.lib on the classpath as well

if you want this "putting on the classpath" beeing happening automatically you have to build this yourself.
(xtend does this by having a quickfix)

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Accessing XText project classes from the runtime [message #1719562 is a reply to message #1719469]

Fri, 08 January 2016 21:01

Larry LeBron

Messages: 124
Registered: October 2015

Senior Member

Ah, ok, thanks for clarifying.

I thought there might be some way to bundle the library with xtext nature or plugin, so that any new project using the DSL would automatically have it on the classpath.

I'll just do it manually for the time being.

Do you possibly have a pointer to the quickfix you implemented for XTend to handle this?

Thanks!

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