Hi Ikai, Thanks again for the reply.
The thing is that I want the "Service layer" to be a facade library which (potentially) can be used in several projects. I assumed it would be useful to compile it into a separate JAR file so it can easily be reused and I don't have to extract the packages first. That is the reason I wanted to separate stuff into different projects, does that make sense or am I thinking completely wrong here. -- Maurits On Jan 21, 9:34 pm, "Ikai L (Google)" <ika...@google.com> wrote: > The .NET approach is different than the Java approach. It's unnecessary to > break this project up. I personally do not think you gain anything with this > approach other than additional complexity. > > That being said, Eclipse is infinitely flexible. You can probably set it up > so that on a build, it creates a JAR file and places it in WEB-INF/lib. > > On Thu, Jan 21, 2010 at 12:18 PM, Maurits > <mvanbeuse...@themobilebrand.com>wrote: > > > > > > > Hi Ikai (and others), > > > Thank you very much for your reply, I appreciate it. > > > Although I am not yet satisfied (sorry ;) ). The thing is I am not > > just learning Java, I got the language covered, I am a seasoned C# > > programmer and have some experience with Java already. Now I am trying > > to build a serious application and would like split up the project > > into several projects (as I would do in .NET). The thing is that I > > have all the code ready and it works as long as I manually copy the > > JAR files into the "WEB-INF/lib" folder. I will go check out the link > > you supplied, but if you or any one else can provide some more insight > > I would really appreciate it. > > > Thanks Maurits > > > On Jan 21, 8:29 pm, "Ikai L (Google)" <ika...@google.com> wrote: > > > Hi there! > > > > If you're learning Java, it's probably overkill to create 4 different > > > projects, even for different layers of the application. It's probably > > enough > > > to simply create different packages and sort through them that way. > > > > For development, you can get away with putting the JAR files in your Java > > > classpath. Another thing you can do is to use a popular Java build tool, > > > Ant, to do this manually. It's a great opportunity to learn Ant! Here are > > > the bits related to App Engine: > > > >http://code.google.com/appengine/docs/java/tools/ant.html > > > > <http://code.google.com/appengine/docs/java/tools/ant.html>That being > > said, > > > I don't think it's necessary to break things up into four projects. It's > > > easy - almost trivial - to do so later down the line if your packages are > > > set up right. > > > > On Thu, Jan 21, 2010 at 1:42 AM, Maurits < > > mvanbeuse...@themobilebrand.com>wrote: > > > > > Hi all, > > > > > I am an experienced .NET developer but new to JAVA and Eclipse. I am > > > > currently experimenting with JAVA and the GAE with plans to start > > > > making more use of the GAE since I really like what is offered (Google > > > > keep up the good work ;)). > > > > > However I am running into a problem, I would like to build an > > > > application using multiple layers (currently a Presentation layer, > > > > Service layer, Business layer and a Data layer). My presentation layer > > > > is a GAE project created using the Eclipse plug-in, the other layers > > > > are all normal JAVA projects I created in the same workspace (so I > > > > have 4 separate projects). Now I managed to get everything compile > > > > correctly by referencing all projects with each other using the Java > > > > Build Path -> Projects dialog window. > > > > > However when I run the application I run into the problem that the > > > > Presentation layer cannot find the classed from my Service layer > > > > project. I figured out that I need to manually copy the output classes > > > > from the Service (and others) layer into the WEB-INF/lib folder to get > > > > it working (preferably packed into a JAR file). > > > > > My question is, can this be somehow automated? I read some information > > > > about using an ANT script to do so, but since I am a bit spoiled with > > > > Visual Studio (who does this automatically when I make the reference) > > > > I have no clue on how to start, I don't even know how to automatically > > > > pack the class files from the Service, Business and Data layers into a > > > > JAR file. > > > > > Is there someone who can get me started? > > > > > Many thanks, > > > > > Maurits > > > > > -- > > > > You received this message because you are subscribed to the Google > > Groups > > > > "Google App Engine for Java" group. > > > > To post to this group, send email to > > > > google-appengine-j...@googlegroups.com. > > > > To unsubscribe from this group, send email to > > > > google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2B > > > > unsubscr...@googlegroups.com><google-appengine-java%2B > > unsubscr...@googlegroups.com> > > > > . > > > > For more options, visit this group at > > > >http://groups.google.com/group/google-appengine-java?hl=en. > > > > -- > > > Ikai Lan > > > Developer Programs Engineer, Google App Engine > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine for Java" group. > > To post to this group, send email to > > google-appengine-j...@googlegroups.com. > > To unsubscribe from this group, send email to > > google-appengine-java+unsubscr...@googlegroups.com<google-appengine-java%2B > > unsubscr...@googlegroups.com> > > . > > For more options, visit this group at > >http://groups.google.com/group/google-appengine-java?hl=en. > > -- > Ikai Lan > Developer Programs Engineer, Google App Engine
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