In abstract, my problem is the following: I want to access a class contained in an Eclipse plugin from a Java Project. Is it possible? I've included that class in the "Exported Packages" of the plugin, which supposedly are "all the packages that this plug-in exposes to clients." Can my Java project be a "client" or only other plugins can be clients?
More concretely, I've encountered this problems when using XText. I built an editor for a language, and programs written with this language are stored in a text based format that follows the grammar defined with XText.
I want my users to be able to write Java programs that load and manipulate those xtext-based files. For that, they need to access all the classes that XText generated in the plugin project. However, I haven't been able to use those classes: in an Eclipse instance that is running the plugin with my editor, those classes are not visible.
How can I access them? The only solution I've found is to export my plugin as a jar and then include it in the Build Path of the Java project, in the other Eclipse instance, but this doesn't sound elegant.
Another way of looking at this problem is the following: I want a certain class to be available to any Java project built in an Eclipse instance where a certain plugin is loaded. How can I do it?
Thanks for your help.
PS. I'm launching the second Eclipse instance (the one where the plugin is loaded) from within the first Eclipse instance.
Once you generate your XText support, you need to make sure every package is exported from the Runtime tab by editing your MANIFEST.MF.
Then once you deploy your plugins into an eclipse, that eclipse environment will be able to see those classes.
But that would only help other plugin developers. Java apps can see classes that exist on the classpath (if you add the plugin jars, for example) but as most eclipse plugins depend on the eclipse lifecycle to work, it's unlikely that their java programs would run. That's not always the case (you can use JFace without a running eclipse) but only for plugins specifically designed that way.
If your plugin is installed, you can create a java project and add the plugin jar as an external jar, using *ECLIPSE_HOME* variable. If your plugin is a project in the workspace, you can depend on it (from the java build path) just like another java project. But since it's a plugin, that probably won't help them run.
Related
Is there a way to configure AEM into an IDE like IntelliJ,Eclipse...
So that the IDE shows the errors on my project before I compile it even if I put it outside the source folder like for example the components created.
If possible both the .java and .jsp
I'm not entirely sure what you mean by outside the source folder, but have you taken a look at adobe's documentation?
They have instructions for IntelliJ + AEM with Maven. It also instruct on jsp support as well. It's for 5.6.1 but it should be valid for 6.x as well.
https://docs.adobe.com/docs/en/cq/5-6-1/developing/developmenttools/howto-develop-aem-projects-with-intellij.html
Here's one for Eclipse
https://helpx.adobe.com/experience-manager/using/creating-aem-project-using-eclipse.html
They also have a more generic set of instruction
https://docs.adobe.com/docs/en/cq/5-6-1/developing/developmenttools/how-to-build-aem-projects-using-apache-maven.html#How-To%20Work%20with%20JSPs
Yes, you can maintain CRX data(AEM folders like /etc, /apps, /content, etc) in an IDE like eclipse. This will help you iron out all the compilation errors using features of IDE. Make use of this eclipse plugin called vaultclipse. You can install it from eclipse marketplace.
There is also another plugin called AEM plugin, details on how to use it here.
I want to create a new project in Eclipse Kepler using the two plugins e(fx)clipse (for JavaFX 2) and m2e. The goal is, to have a Java FX project that I can build with maven from eclipse and that has the folder structure of maven, but I want to use the Java FX SceneBuilder from within Eclipse.
Both plugins have own project types and create different folder structures, so I have to do some stuff manually to combine them. Any ideas?
This is not difficult to do in eclipse. The way I did it was as follows:
1) Create the java project/structure first using a maven archetype (I can not remember the specific one, but a generic java one would do).
2) To use the JavaFX functionality of e(fx)clipse, just make sure the JavaFX libraries are included in the Libraries of you Build Path.
3) To use SceneBuilder, make sure that the executable is configured in Window|Preferences|JavaFX screen.
NB: if you are using a java version that has javaFX already in it (e.g. java 8 or a recent java 7 releaase) then you don't need to add a separate JavaFX library in the build path. This was only necessary when JavaFX was not bundled with the rest of the JDK, which is no longer the case.
Good luck.
chooks
My plugin is built by two plugin projects (two plugin projects are in the same workspace).
One of them is an ordinary plugin which has toolbars etc. The other one is a Scala-based XML interpreter.
Everything runs fine and works great while I use "Run/Debug" as "Eclipse Application".
But, after I tried to pack it as a Feature project then Build it with and Update Site Project, the auto-generated JARs are wierd: the content of the ordinary plugin JAR is classes, which is correct; however, the other one (in scala), Eclipse packed the JAR with the original file - filename.scala in the JAR!
In other words, the plugin project didn't get compiled after Build(in Update site project by putting Features in).
But it worked fine when I used "Run" as "Eclipse Application".
Does anyone know how to fix this? Or any hint?
I've tried this but it didn't fix my problem.
I have been using Eclipse IDE for a long time. Its a really great IDE for Java/C/C++ (and other languages with its THOUSANDS of plugins). Every once in a while, I get the need for creating a Javax interface. To do this normally, I would setup the new java project then add what I need. But, wouldn't it be nice if I could just make a template project to automatically include the code for the files. How would I go about doing this? It it even possible? The Eclipse CDT can make a new project type. So can the Google ADT and Google App engine. So I would imagine it is possible. But how?
You must write your Eclipse plug-in that implements org.eclipse.ui.newWizards extension point. You can extend an existing "New Java Project" wizard, and provide your custom project layout implementation (see the API).
Regarding java projects you might be familiar with maven. Maven offers of project template mechanism called archetypes. I never created an own archetype but the explanation to do this (Guide to Creating Archetypes) does not seems to be so complicated.
So although this is not a special eclipse solution it might be helpful for you. Together with the m2eclipse plugin it also works nice together with eclipse.
Does anybody have experience working with JavaRebel, specifically for a large web application built using Maven? There is a JavaRebel plugin for Maven that seems under-documented, does anybody have comments on how it works, can you really update one class in a Multi-module Enterprise Project and have it "automagically" change on your Server?
Are there any issues with different IDEs and this setup? For example NetBeans will not let you compile one class at a time in a Maven project (from what I can tell).
Disclaimer: I work for ZeroTurnaround.
JRebel (formerly JavaRebel) installation involves the application configuration file "rebel.xml" and modifying the container startup command line.
The Maven plugin is used to generate the "rebel.xml" file, that is used by the JRebel agent running in the container to find the files in the workspace. This allows to use IDE building to compile .java files and skip the Maven build process, as the changes to files will be picked up from the workspace. However as it relies on the IDE to compile the classes, it does depend on the IDE ability to compile efficiently. I know for sure that Eclipse will compile classes one at a time and am fairly sure you can configure NetBeans and IntelliJ IDEA to do the same.
In addition to the Maven/rebel.xml configuration you also need to configure the container startup command line. You may also need to install and IDE plugin or do some additional configuration to have the best expirience with JRebel. Following through the steps of Installation manual ensures that.
Hope this helps.
Disclaimer: I've not actually used this plugin myself.
This tutorial implies that JavaRebel works well with Eclipse 3.4. If you are also using m2eclipse it should work ok with Maven projects as well (as long as you ensure that Maven and Eclipse are compiling to the same target folder so the Eclipse incremental compiler can be used to modify the class file).
According to this post, you should configure the javarebel-maven-plugin to generate the rebel.xml (used to mount external folders to the application classpath). There's also a general installation guide you may find useful.