Alias feature pruning

[Julien Viet]

Hello

in my current effort (simple taglib feature) I am adding the ability to use external application templates in an application.

This would use the absolute path of the template when injecting a template:

@Inject
@Path("/some/external/templates/index.gtmpl);

In this case the template would be imported in the application and not compiled (as it was already compiled before).

I will remove the 0.7.0 beta @Alias feature, as this feature was developed for this use case.

hoping it won't hurt anyone.

Julien

[benjamin garcia]

Hi, 

How use it when tempate is in jar on WEB-INF/lib app?

Regards,

Benjamin

[Julien Viet]

it should work OOTB (if not it’s a bug).

When using absolute path, it is possible to determine the class name to load and use. So in the case of "/some/external/templates/index.gtmpl” the template class looked up is some.external.templates.index and loaded from the web app classloader.

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[benjamin garcia]

I read ProcessingContext.resolveResourceFromSourcePath method  and I don't understand when juzu search in classloader? 

[Julien Viet]

so this is done in two steps

1/ at compilation time when a template is injected and this template has a path that is not located inside the application templates then this template is considered as managed, whether it actually exists or not (see TemplateContainerMetaModel#add method). This template is declared in the templates to load at runtime as “needed” by the application in the JSON config of the application, for instance:

{

  "controller":{

    "controllers":["plugin.template.external.A_"],

    "default":null,

    "escapeXML":null

  },

  "template":{

    "package":"plugin.template.external.templates",

    "templates":["plugin.template.simple.templates.index"]

  }

}

In this case the template is plugin.template.simple.templates.index however the template package is plugin.template.external.templates.

2/ at runtime the template bean is loaded from the classloader in the PluginTemplate class when it describes the bean involved in the IOC in the TemplatesDescriptor class.

So for external templates, they can be injected however the actual code does not check their existence at compilation time. Perhaps it could be checked in the TemplateContainerMetaModel#add and if the template is absent then a warning or a failure is issued. I would rather do a warning than a failure at a warning provides more flexibility and a failure would not prevent anyway the template to be here at runtime since the external template would not be packaged along with the application.

[Julien Viet]

considered as managed => considered as unmanaged

[benjamin garcia]

Ok, in fact all my modules template package has the same name. thank for explanation.

decorate and include tag work with same functionnality?

[Julien Viet]

no they do not work this way they require the template to be local, the getTemplate method of MetaModelProcessContext does not use it:

  @Override

  protected <M extends Serializable> Template<M> getTemplate(Path.Absolute path) {

    TemplateMetaModel tmm = owner.get(path);

    if (tmm != null) {

      return (Template<M>)tmm.template;

    } else {

      return null;

    }

  }

now I don’t remember if it works this way for some specific reason or if I just not thought about doing it.

[benjamin garcia]

Well, know I'm in trouble. 

I need this (it worked with alias)... 

Without this, I can't upgrade juzu version...  

[Julien Viet]

I will try to implement it soon and see how it goes :-)

[benjamin garcia]

Ok, thank you :-)

[Julien Viet]

can you try Juzu master ?

it should work now.

note that you must quote the path value since it begins with a “/“ and this char is also used by the tag closing syntax /}, for example

#{decorate path="/plugin/template/tag/decorate/templates/foo.gtmpl"/}

[benjamin garcia]

Hi, 

ok, I try.

[benjamin garcia]

Well, 

Compilation done :-)

Now, I have a ClassNotFoundException on template which are includes when I start my app. It search class in wrong package: https://gist.github.com/benjamingarcia/3ca5b1222b4b9a86f565

[Julien Viet]

can you describe your 2 projects and package / includes / templates ?

[Benjamin Garcia]

Hi, 

jar include : a standard maven jar project with template in org.geomatys.gui.style on src/main/resources.

war is a standard war maven project generated with archetype. template package in war is org.geomatys.gui.template.
Jar is on WEB-INF/lib war folder.

[Julien Viet]

what are the names of the templates that includes and the template that is included ?

[Benjamin Garcia]

template which include is /org/geomatys/style/style_dashboard.gtmpl
and template included is /org/geomatys/style/style_selected.gtmpl. Both are on included jar.

[Julien Viet]

so what is my.class.database ?

can you give us the content of the config.json of your application ?

[Benjamin Garcia]

it was /org/geomatys/style/style_selected.gtmpl. sorry I replace it before send gist

[Benjamin Garcia]

I think I found. Template which contain #{include ...} can't be in included jar. right?

[Julien Viet]

can you explain fully the user case and what you are doing ?

[benjamin garcia]

I'll prepare a source example on github, and I'll send url.

[benjamin garcia]

Hi, 

My example is here : https://github.com/benjamingarcia/juzu-example.git.

I hope README is understandable

regards, 

Benjamin

[Julien Viet]

thanks I will look after soon.

[Julien Viet]

I’m looking at the project but it does not seem correct:

index.gtmpl and index2.gtmpl includes /com/geomatys/example1/template01.gtmpl and /com/geomatys/example2/template02.gtmpl

the project2 has a template03.gtmpl

how is that supposed to work ?

[benjamin garcia]

My mistake. I forgot these files. github is up to date

[Julien Viet]

does your real project have an application declared for template01/template02/template03 ?

[benjamin garcia]

Hi, 

No, these projects are an example. I do this to extract my problematic around juzu.

[Julien Viet]

you need to create such “empty” application to get your templates compiled and then usable.

[benjamin garcia]

ok, I try this.

[benjamin garcia]

Hi, 

thank you for your help, project works.

Benjamin

[Julien Viet]

cool!