Dynamic project references does not trigger a fuild rebuild

Hi,

In the case of a Dsl contained in an eclipse project with only xtext/pdePlugin natures and xtext/manifest builder, the content of the manifest is not taken into account when it changes.

I found the following workaround in WorkspaceProjectsState by overriding isAffectingContainerState.

private final Path manifestPath = new Path("META-INF/MANIFEST.MF");

@Override
protected boolean isAffectingContainerState(IResourceDelta delta) {
	if (manifestPath.equals(delta.getProjectRelativePath())) {

// need to manually clear the CachedDynamicReferences
delta.getResource().getProject().clearCachedDynamicReferences();

		final XtextBuilder builder = BuildManagerAccess.findBuilder(delta.getResource().getProject());
		if (builder != null) {

//this will trigger a full rebuild of the index
builder.forgetLastBuiltState();
}
return true;
}
return super.isAffectingContainerState(delta);
}

More info on forum thread :
https://www.eclipse.org/forums/index.php/m/1836582/#msg_1836582

Yannick

Start with WorkspaceProjectsState and its isAffectingContainerState method, then trace how XtextBuilder and BuildManagerAccess handle changes to META-INF/MANIFEST.MF. Compare the reported workaround with the existing build and dynamic-reference state handling; done means manifest changes trigger the needed full rebuild without project-specific overrides.