I'm developing my first eclipse plugin and have one problem. My plugin uses external jar - this works well, problem is, that this external lib uses properties file, where are stored login and properties data. Where should I copy and add this file? Now it's IO exception thrown with "Can't find the file" error.
Thanks
There are a couple of places where a plugin can store information; which one to use is a decision based on the scope of the data and how transient or portable it should be.
Here is a short overview of some options.
You can save persistent settings as Preferences; that way users can export/import them between workspaces. See http://wiki.eclipse.org/FAQ_How_do_I_load_and_save_plug-in_preferences%3F
You can also use Plugin.getStateLocation() to get a reference to an IPath for storing internal state of your plugin.
Related
We are developing an Eclipse RCP application, and up to target version 2022-03, we always used this to get the current workspace path:
ResourcesPlugin.getWorkspace().getRoot().getLocation().toString()
But: with Eclipse target version 2022-09, we get an IllegalStateException, if we run the product outside of eclipse, i.e. the exported product:
java.lang.IllegalStateException: Workspace is already closed or not ready yet. Consider tracking the org.eclipse.core.resources.IWorkspace service (using your favorite technique, e.g. Declarative Services, ServiceTracker, Blueprint, ...) instead of calling the static method here to prevent such issues!
at org.eclipse.core.resources.ResourcesPlugin.getWorkspace(ResourcesPlugin.java:502)
I mean, the exception does propose some alternatives. But: is it really not possible anymore to use ResourcesPlugin.getWorkspace()? This was quite convenient. Is there any equally simple solution?
The simplest way of getting the workspace location is:
URL location = Platform.getInstanceLocation().getURL();
Platform is org.eclipse.core.runtime.Platform.
This does not rely on the resources plug-in at all (so it even works in a e4 RCP without the resources plug-in).
I am using the mybatis-generator in a maven project to generate the Java files for a few tables. At the end of the generation, I would like to generate a few non-java files like properties files and resources. However the default generator allows me to generate only XML and Java files. Is there any way to also get the generator to create sql files, SPI definitions and property files for example?
Looking inside the generator, it seems that the Generated java files and XML files go through some further process(formatting et al). Even if I write a custom plugin, I can generate an XML or an sql file only but not a properties files or an sql file. Even if I did, I cannot get the process to finish because the subsequent steps would fail.
Currently, I am getting over these by creating my own files and writing them thru a custom plugin. However, during the plugin execution, the folder target/generates-sources/mybatis-generator is not created yet. Therefore assuming that location to have already been created is ruled out. On the other hand, if I go ahead and create the folder and its internal META-INF/services folder, I am not sure if this will be overwritten at a later stage. In addition, my plugin does not (by virtue of the way the generator initiates plugins), have access to the project root folder. So that is not an option either.
I neither have access to the ShellCallBack, implying that postponing the file creation to a well defined time-point in the build process is also not possible.
So how do I go about creating the service definitions and the additional resource files?
The last resort is to hard-code the project folder or to pump the project folder through a property. This is coming to my rescue now. But clearly, the generated files are being detected by my git client and I have to clean up these files also despite their being dynamic.
Hints please?
Thanks in advance.
Rahul
The generator currently supports Java, Kotlin, and XML file generation. There is an open feature request to support other file types in plugins. You can follow it here: https://github.com/mybatis/generator/issues/752
A problem occurs for me when I attempt to use the Google Web Application Wizard in the Eclipse IDE (Running on Mac OSX 10.7). If I attempt to generate a project with any given name/package (using the newest GWT and GAE SDK), without generating the sample code, I get an error stating:
Creation of element failed:
Reason:
Resource '/xxx/war/WEB-INF/web.xml' already exists.
Or alternatively
Reason:
Resource '/xxx/war/WEB-INF/appengine-web.xml' already exists.
The create project process does not finish, and when I exit out, there is a folder with whatever 'xxx' happens to be in the workspace I designated. However it only contains a src folder (with no modules or packages) a war folder (with no library, css, or html files), and does not import the .jar files from the SDKs.
If I follow this same process exactly, except allow it to generate sample code, all the files are there. If I follow this process except uncheck use google app engine, all the files are there. However it is this specific procedure that seems to be causing the problem. I would prefer not to have to reinstall Eclipse and all of it's plugins, only to have this happen again, so it would be greatly appreciated if someone could help me identify the source of the problem.
Thanks!
Create the Application as you describe except uncheck "App Engine".
Then turn on GAE via the project's Properties dialog.
I am already using an open source GWT project (iServe) and I would like to integrate into it another open source GWT project (PetalsBPM), by which I mean being able to call it and reference its methods.
I have imported iServe in Eclipse (it has multiple modules) as separate Maven projects referencing its other and can run it successfully through Runas -> Web application in development mode.
If I do that and run the other project through the console as mvn gwt:run, I call initiate PetalsMBP through iServe. However, that means that the two programs have to run as is, without communication with each other.
I have also imported the second project into eclipse as a java project successfully (converting into a Maven one causes problems - various lifecycle configurations ones), but whenever I try to add to to iServe through Properties -> Java Build Path -> Projects, although it does not cause any errors immediately, I cannot launch iServe anymore. It produces the following error:
"Exception occurred executing command line.
Cannot run program "C:\Program Files\Java\jre7\bin\javaw.exe" (in directory "C:...iserve-sal-gwt-1.0.0-SNAPSHOT"): CreateProcess error=206, The filename or extension is too long"
Are my problems related to the fact that PetalsBPM is not a Maven project in Eclipse (I doubt it)?
Am I doing something wrong, i.e., this is not the way to reference a project from another one? should I add a reference to the first project's (iServe) gwt.xml file?
Is there a way to do what I want without having to wrap the second project as a jar and calling it from iServe? I would prefer not to, since producing a jar every time I make a slight change is not exactly efficient!
P.S: The second project is a regular GWT project with an entrypoint, not just a module. Should I remove this?
UPDATE: Trying to figure out the source of this error, I attempted to simplify the problem, so I performed the following moves:
I created two new simple GWT projects and tried to reference one
from the other. Worked fine
I referenced the project I actually want
to use (PetalsBPM) from the simple one I just created. Also works
fine.
I referenced the new simple project from the original one I
want to use (iServe). Also works fine.
Tried doing what I actually
want to do, copying the settings from 2&3. Produces the same error
"CreateProcess error=206, The filename or extension is too long" if
I reference PetalsBPM (does not when I remove it from the referenced
projects)
So, I tried switching workspaces. I created a new workspace in C:\, and moved the actual projects there. Still it did not work. :(
Any more ideas?
I met the same type of error "Create Process, error=206, path too long etc." a hundred times.
Then, I found a solution/explanation in google-groups, it solved my problem.
I post the content and link as it might help others.
This website (StackOverflow) really helped me a thousand times.
Thanks to you all !
solution/explanation :
(Response from Stephen Johnson)
(...) if you're using eclipse plugin go to Project | Properties, choose
Google \ App Engine \ ORM and only include directories that you have
classes that you want enhanced. By default it does the entire project
so that includes a lot of needless files. (...)
Link :
original post # google-groups
Read the exception message again. Somewhere along the way Maven is generating a path that is too long for (some) Windows API to handle, try moving your workspace to a directory straight below C:\.
I just tried "skolima" reply and it worked for me. In Eclipse I clicked File->Switch Workspace.
Three things to note:
After I created the workspace in "C:\workspace" I had to update my Project->Properties > Java Build Path > Libraries > Add External JARs...
I'm using Windows 7.
I'm using "Eclipse Java EE IDE for Web Developers"
I hope this others.
I have a Java web app that offloads some environment specific settings (Hibernate configurations, required directory paths, etc.) in a properties file that is ultimately packaged in the deployed WAR. If I wish to distribute this web app, what's the best way to handle the mangement of these settings? It's not feasible to ask the user to open up the WAR, update the properties file, repackage the WAR, and then deploy. I was thinking of either creating an installer (e.g. NSIS, WiX) that asks for the properties, writes them in the WAR, and then asks for the deployment location for the WAR. The other option is to have the properties file external to the WAR, and based on convention the web app will know where to read the file. What's the best practice in this case?
Some projects that require this sort of configuration, and face this issue, use the approach of building the projects (and the .war) on the server where it will be deployed.
So instead of:
Copy a pre-packaged .war file to a meaningful location
You get:
Check source code out of SCM (Subversion, CVS, etc.)
Configure to taste
Build the project (automated with Maven or Ant)
Deploy the project (also typically automated using Maven or Ant)
From here you can get fancy by checking each server's configuration files into SCM as well. This approach allows you to version & audit configuration changes.
I was also facing the same problem in the project. The developer before me had done crude fix for the solution which was adding all the required configuration in the hibernate.hbm.cfg.xml file and commenting them. The required configurations were uncommented as per the need. There is a better solution to problem however.
Use a configuration folder schema
Using configuration Parameter Reader
Use of ConfigurationReader component
Source : http://www.javaworld.com/javaworld/jw-11-2004/jw-1108-config.html