GWT source question

[Jason Purcell]

Hi there...

If I want to make certain classes available on the client side in GWT, then it has to be in the "client" folder by default.

However, I want to be able to use classes from another project.  I have access to the source of the project.

Apparently I have to specify the source in the module (*.gwt.xml) but I can't get it to work and I don't see any working examples on the internet.

Something like this:


<?xml version="1.0" encoding="UTF-8"?>
<module>

    <inherits name="com.google.gwt.user.User"/>
    <inherits name="com.google.gwt.http.HTTP" />

    <entry-point class="com.mystuff.web.gwt.client.MainEntryPoint"/>

    <source path=???????????????????????????>  //What format???  Hard-coded?  Relative path?  Namespace?
       
    <!-- Do not define servlets here, use web.xml -->
</module>



Does anyone know how I can do this, or even specify multiple source locations?

By the way, I am using Netbeans 6.8 on Windows, if it helps.

Regards,
Jason.

[Enrico Goosen]

Hi Jason,

 

If you want to use classes from another project in an existing GWT project, you need to jar up the classes, including the source.

The source from the other project will need to be made available as a GWT module.

So the other project will have a mymodule.gwt.xml file.

Example:

You module file may be in the following package:

za.co.mypackage

 

In the project that will be using the module, you use the inherits tag to indicate the module you want to use.

<inherits name="za.co.mypackage.mymodule"/>

 

Regards,

Enrico

 

---

From: ctjug...@googlegroups.com [mailto:ctjug...@googlegroups.com] On Behalf Of Jason Purcell
Sent: 12 March 2010 09:23 AM
To: CTJUG...@googlegroups.com
Subject: [CTJUG Tech] GWT source question

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[Jason Purcell]

Thanks, Enrico.

When you say "The source from the other project will need to be made available as a GWT module", do you mean the following? :

<?xml version="1.0" encoding="UTF-8"?>
<module>

    <source path="za.co.mypackage" />
</module>

...or must it be a hard-coded path?

Jason.

[Alessio Harri]

The actual source code needs to be in the classpath ie. in the jar file

 

Any libraries you access on the client side needs the source code on the classpath

because the GWT compiler needs to generate javascript from the source code NOT the class files.

[Jason Purcell]

Hi, Alessio...

I configured the other project to include the .java source when creating a JAR.

I then reference that project's JAR file from my GWT project.

I assume then that those sources are in my classpath as I can reference the classes in my project (e.g. when using code-completion).  When I check the JAR then those files are definitely there.

But I am kinda stuck on what needs to go into the *.gwt.xml file of the referenced project.

<?xml version="1.0" encoding="UTF-8"?>
<module>

    <source path="*** this part***" />
</module>

I've tried the namespace and using a hard-coded direct path, but I get the following error:
"No source code is available for type myproject.MyClass; did you forget to inherit a required module?"

Is there anything else I need to configure?  Or am I missing something?

Regards,
Jason.

[Jason Purcell]

Maybe I should ask: Where does the other project's module (e.g. mymodule.gwt.xml) go?  In the same folder as the classes I am referencing, or in root?

On 12 March 2010 10:27, Enrico Goosen <EGoo...@metropolitan.co.za> wrote:

[Enrico Goosen]

Hi Jason,

 

Here's an example of what the module file (*.gwt.xml) looks like:

<module>
 <inherits name="com.google.gwt.user.User"/>

    <inherits name="com.googlecode.gwt.math.Math"/>
    <inherits name="com.allen_sauer.gwt.log.gwt-log" />
 <inherits name="com.gwtext.GwtExt"/>  
 <stylesheet src="css/extension.css" />
 <source path="client" />                
</module>

 

You can place the module file in your source package eg. za.co.myproject

 

When you jar up the above project, you will have classes and source files in the jar as well as the GWT module file.

eg.

   za

        co

            myproject

                mymodule.gwt.xml

                mypackage

                    MyClass.class

                    MyClass.java

 

Make the jar available on your classpath, and as per my previous email:

In the project that will be using the module, you use the inherits tag to indicate the module you want to use.

<inherits name="za.co.myproject.mymodule"/>

 

Hope this helps.

 

Regards,

Enrico

---

From: ctjug...@googlegroups.com [mailto:ctjug...@googlegroups.com] On Behalf Of Jason Purcell

Sent: 12 March 2010 11:18 AM
To: ctjug...@googlegroups.com
Subject: Re: [CTJUG Tech] GWT source question

[Jason Purcell]

Okay, thanks.

I am probably making a spelling mistake somewhere.

I changed the GWT compiler logging level, and I can see that my module is loaded.  It also shows that the compiler found translatable resources.

I will investigate further and provide feedback when I find out what the problem is.

Jason.

[Jason Purcell]

Got it to work now.

I moved the module up by one folder as in your example...  Sorry, I didn't see that at first.

Thanks!!!