Error when validating Xtext DSL in standalone Java project - java

I recently followed Sebastian Zarnekow's short guide on how to deploy an Xtext DSL into a standalone project (found here: http://zarnekow.blogspot.co.uk/2010/06/how-to-deploy-xtext-standalone.html)
However I receive the following error when attempting to run the project...
"The string resource '_UI_DiagnosticRoot_diagnostic' could not be located"
Could this be something to do with how the JAR is exported, I chose the "Extract required libraries into generated JAR" option, if I try to use the second option where the libraries are packaged into the JAR I receive a different error telling me that a main method could not be found.
Has anyone come across this issue before? I tried updating EMF and Xtext but it didn't seem to have any affect.
Any help is appreciated.

this should be a "warning" only - maybe logged as error but not prevent the program from running.
the problem is there a multiple plugin.properties in the root of the jars that may override each other. seems one from the org.eclipse.emf.ecore is going lost.
so you may create a plugin.properties that contains this (and maybe other keys) as well.

Related

Generate .JAR from IntelliJ

I am attempting to create a JAR from IntelliJ using the build artifacts but when I do it is saying
Error: Invalid or corrupt jarfile
Im not sure what im doing wrong though?
Hard to tell from what you have posted. Intellij can be finicky at times especially with the Artifact jar build interface. There is a good tutorial on IntelliJ's website on how to set up the artifact. One area that may provide difficulty is pointing to the Main Class.
An issue I had in building a jar using the tool was selecting the Main Class. Ultimately I typed it in and it worked. Not sure if this is the advice that will solve your problem.
From the intellij website at: https://www.jetbrains.com/help/idea/creating-and-running-your-first-java-application.html
Note the image below.
Other potential issues could be that a dependency was corrupted, although doubtful.
Could also be the Manifest file is referencing a file that is causing the issue. Most Manifest files should be fairly simple and point to the main class. Last but not least email IntelliJ. They are good at responding and if the problem is one that intellij can solve, they will help. Unfortunately they only respond by email and sometimes can take up to a day.

Eclipse & Xtext - DSL Editor not working on deployment

I've implemented a DSL using the Xtext framework on the Eclipse IDE. Additionally, I've created several UI features (Import/Export handlers, for example) that are available when I run my Eclipse Application.
Now I'm trying to deploy my application as a standalone product. I created a ".product" file in the ".ide" package of my project and everything works when I run my application from that ".product" file.
However, when I DO deploy it, I run the generated ".exe" file and the editor fails when I create a ".mydsl" file (I don't even get the prompt to convert the project to an Xtext project). The error is:
Failed to create injector for org.xtext.myDsl.Mydsl ExtensionFactory: org.xtext.myDsl.Mydsl.MydslExecutableExtensionFactory
I'm totally clueless with this, as I don't believe I'm missing any plugin imports... what could I be missing?
Any help is greatly appreciated! Thanks!
These kind of issues is ususally caused by some inconsistencies in your eclipse metadata in build.properties. Make sure all source folders and resources like the manifest and the plugin.xml are listed there. You should get a warning in eclipse like
There is a quickfix for the issue as well.

Info about version dependancies of enterprise java libraries

I am new to enterprise application developement and trying to create a REST server with Spring REST, JPA taking to mySQL database and Javascript on the client side. As I see loads of opensource libraries doing specific task, I started off with using 'maven project' with different 'arch type' (which is nothing but predefined POM with relevent libraries as I understand) provided by Eclipse. But I often run into version mismatch issues, in many cases found specific solution to that perticular libraries in StackOverflow or other sites.
Hence I started looking for a information these version dependancies such as, this version of JPA works with that version of Hibernate library and so on. I checked maven repository of major libraries, I did not find such information so far.
My queries are:
Where can I find these information about the versions dependancies?
Are these pre defined POM in eclipse reliable? Who owns them, where can I get last modified dates on these maven 'arch types'? (I find the ones I choose having fairly old version of libraries).
If I have to start off on my own creating a Maven dependacies, where will I get information about what are the dependent libraries, for example, if I need spring MVC, for sure it needs java servlet library. I am worried becuase the maven 'spring-mvc-jap' arch type whooping 50 libaries as dependancies.(Coming from embeded domain, I find to too hard to digest :D). So not sure if it is the right way.
Please correct if I am missing anything in my understanding.
You can find this information, if you are using maven and some IDE you can go to the dependancy and make click un > and this will show the librarys used for this dependancy or if you want to use the console you have http://maven.apache.org/plugins/maven-dependency-plugin/examples/resolving-conflicts-using-the-dependency-tree.html this will show the same that the IDE.
After normally in the documentation of the library used, you can find some doc about the dependancy about this.
Other solution is get the .jar and use 7zip to see the POM and know the dependancy used.
And for finish my answer if the IDE tell you that you dont have x dependancy normally you have to add this because any of the other dependancy used have it (they used only for the compiling task), but sometime somes projet change a lots of code between the version .a to .b so you will have some problem using the version .b, at this moment i didnt find one good and easy way to fix this, only using the way that i told you (only if i found some problem in the compilation)
3> I am not sure how it works in eclipse but in IntelliJ IDEA when you start using some class without proper dependency IDEA suggest you to add proper dependency automatically. The same approach should be in eclipse.

Class file not found in IntelliJ

In IntelliJ I get this weird error when I try to compile.
Cannot find annotation method 'cascade()' in type 'javax.persistence.ManyToOne': class file for javax.persistence.ManyToOne not found
I know, it seems pretty obvious what the problem is, but having spent too much time on this problem I now turn my trust to you!
I use ideaCommunity-9, where I have created a global library for JBoss, which contains all JBoss jars including ejb3-persistence.jar. My module includes this library, and I have moved it to the top of dependencies.
No otherwhere in classpath I have a javax.persistence.ManyToOne class, and it also opens up in IntelliJ without problems.
If I open the file where I get the compile error, IntelliJ shows no problems and also navigates to the class file on pressing Ctrl+B.
The code is also build with ant and here it works fine.
Besides the above error I get six others along the same path (name in Table, etc.) - all related to JPA. I also get a message saying "Please file a bug to JDC yada yada yada."
Try to tick a checkbox "export" in your dependencies.
I mean: "File" menu -> Project Structure -> Modules -> Dependencies, and there you can see libs included to the module. You should also see a checkbox near each lib in column 'Export'.
Just got this myself but non of those things were my issue. I downloaded a project from github, then opened in intelli J with the problem after trying to run a junit test.
Solution: Project Structure -> Modules -> 'Project_Name' -> Sources (tab) -> click src folder -> Mark as: Sources
This should highlight src to be blue and all the class files should be the circles with C instead of looking like normal files. Try running a test again and see if that does it.
I'm sure, it is too late to answer, but I had to follow a different approach for this error to resolve this issue.
I had to create this as global library and add that library to the module, then only the error is resolved.
Isn't that similar to this SO question?
The solution there was to add all JBoss jar (which you did), but also all persistent-related libraries (like Hibernate)
See this JBoss project configuration for example:
alt text http://jdick.co.uk/blog/wp-content/uploads/2008/12/projectstructure1.jpg
In short, ejb3-persistence.jar might not be the problem here, just a symptom of other elements missing.
Or, if it is the problem, it may be related to the fact that it is not deployed correctly (for the WebApp configuration).
Here's an idea:
Maybe you have multiple versions of your jar file.
Search your folder hierarchy for the file ejb3-persistence.jar,
using a file management tool such as Total Commander.
Multiple appearances of the file in your classpath may confuse IntelliJ Idea
into not recognizing the proper class in the proper jar.
had a similar problem ("cannot find class spring...DefaultResourceLoader even though it was in my maven dependencies) and no amount of tweaking of revalidating caches seemed to help. Blowing away my $HOME/.Idea* paths and (basically) starting from scratch fixed it for me. At least for now...
I was getting the class not found error message when trying to execute a .groovy test class, which referenced a .groovy file (located in the root of the source directory of a submodule - i.e. no packages).
Moving the source file .groovy into a package, fixed the issue for me.
Move:
src/main/groovy/RunMe.groovy
to
src/main/groovy/somePackage/RunMe.groovy
In intelliJ I got this problem when I built (ctrl+shift+F9) at the file level.
The reason is, I had changes in other files in the same maven project, that were not getting picked.
I solved it by building at the project level (Select the Maven project in intellij and press ctrl+shift+F9)

Strange problem with imports in Java Application

I'm building a plugin to extend the Eclipse BPEL Designer. That plugin is supposed to allow users to add meta information to certain model elements via EAnnotations. I already did the same thing for a BPMN model and it work just finde but when doing this for the BPEL designer I reveive rather strange exceptions.
The first I thing realized when trying to extend the BPEL Designer was that the designers plugins are defined in an unusual package structure. Instead of org.eclipse.bpel.xxx they have a "bin" in front of all package names. When I'm trying to import some of the designers classes I therefore have to refernce the bin path to make it work. However all the examples I was able to find just imported classes from the ordinary package structure.
Most of the time importing classes with the bin in front of the package name worked fine for me but every now and then I receive a strange error message. The message is in the form of: The type org.eclipse.bpel.xxx cannot be resolved. It is indirectly referenced from required .class files
It seems that Eclipse somehow can't find certain classes. I'm stuck at this point for over a week now and don't find any solution. From my point of view the problem has to be seen in the BPEL Designer plugins. Inside those plugins they reference classes in the form of org.eclipse.bpel.xxx but as I said when I reference those plugins their classes are inside packages with a "bin" in front of the normal package name. Could that be an explanation why certain classes can't be referenced by Eclipse and I get those strange error messages?
I'd appreciate any new ideas about that problem and hope that somwebody can give me an advice to solve that problem.
Cheers
Stefan
I already encountered in the past such troubles ...
I think there is a problem with the export/import of the BPEL Designer plugin.
How did you get this plugin ? Are you working with binary plugin or plugin imported as source in your SDk ?
Try to get again this plugin, may be an other version, or from an other source .. an update site.
I really think these "bin" packages/folders should not be here
Hope this can help ...

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