I've a command line Java program that uses multiple folders containing files representing models, indices and resources that are loaded and used by some of the Java classes at runtime.
I'm trying to convert this program to a Play application (Scala) to provide a RESTFul interface. My question where should I put these folders so that they will be accessible by the Java classes when my Play application is running?
I'm using play-2.1.4.
you can add folder to classpath via SBT ( check out sbt document ),
so playframework can find you class, and then create some play action to reuse the service which you already have.
and, if you just want to wrap your application to provide some REST API, I'd like to recommend Spray to you, which can make your application export as REST API more easy. Hope this helps.
Related
What I'm trying to do in Aurelia, is something like Prism is doing in WPF- Composite applications.
So lets say I have a "shell" application that defines the main application layout, then i have modules that I can plugin at run-time. Those modules can be an Aurelia application per se or Aurelia plugin (don't know what to use - need recommendation).
When loaded, the module needs to add it's menu items to the main application menu to expose it's features.
This is a mockup of the application:
Each module can have multiple menu items and can be pretty complex.
I'm using latest Typescript, Aurelia-CLI to create the application, and I'm using the built-in bundler : Aurelia's new built-in bundler.
So What I don't know is:
Those modules/features - what must they be? (Maybe Aurelia Plugins, or another Aurelia application?)
How to load those modules/features at run-time? (like deploy it in some plugins folder and tell the main shell application to load them)
How to modify the main menu and add new menu items from the loaded module?
Please help
Aurelia supports ultra dynamic applications. Also, there have been other community members who have had similar requirements and was able to resolve it. So I think the scenario is possible.
It seems the sub-application can just be a route.How/where to load the route should be determined based on the application URL
Those modules doesn't need to do anything specific, they can just be a normal, plain JS/TS class with lifecycle methods to handle activation/deactivation. I guess that main shell and all sub-applications need to share a common URL, you cannot have more than one router.
There could be a singleton/central store for new route to register information about loaded features, or it can be loaded upfront by a configuration file/metadata file or a database fetch.
Here is a similar question from another community member that I think can help you see how to glue things to https://discourse.aurelia.io/t/dynamicaly-load-routes/1906
I'm developing a GWT project at the moment and it's been up and running for a while. New functionality that is to be added require extensive testing, visualizing and simulating of a specific algorithm. I would like to export that specific algorithm so that I may call it directly from JavaScript and do some canvas magic.
How can I export a number of classes for direct use in JavaScript from a GWT project?
I've tried using the GWT exporter, following the Getting Started section closely.
I've noticed that my output directory contains a new generator class (TestClassExporterImpl.java) but the final JavaScript output contains no trace of my TestClass or the exported methods.
I'm sure I've made a mistake somewhere on the way or didn't understand the GWT exporter correctly.
Try to disable obfuscation, it will create the same names in Javascript as in the original Java code
My problem:
I have web project which implements NServicebus and should listen to messages.
Trying to keep my solution tidy I set up a different project for all my messagehandlers.
I now find that these messagehandlers do not get "hit" with messages.
To my understanding NServicebus scans all dll's in the debug folder of the web project to find any classes implementing IHandleMessages<>.
I referenced the messagehandlers class library project in my webproject and it appears in my debug folder, however it does not seem to get hit.
What does work
In a console sample project the inclusion of a referenced project which contains messagehandlers works as expected.
In my web app it works when I move my
messaghandlers to the web app project itself.
Reading through the website http://docs.particular.net/nservicebus/hosting/nservicebus-host/ I found that there are overloads for the Configure.With() method.
However:
I do not know if I need them. They text only seem to suggest that
this will limit the places where NServicebus looks for the
implementations of the interface.
these overloads do not exist in the Configure.WithWeb method which I'm using.
I can solve my problem by moving all the messagehandlers to my web project, but this does not seem like the best solution.
Am I missing something here?
When using NServiceBus in a web project, use NServiceBus.Configure.WithWeb() instead of NServiceBus.Configure.With().
Also, in order to load message handlers in a web application, you need to include the .LoadMessageHandlers() line after .UnicastBus() as described in Hosting NServiceBus in your own Process. Otherwise any IHandleMessages<T> implementations are not loaded and your web application operates as a send-only endpoint.
I am a newbie at GWT and I have the following query.
I have a scenario where I am trying to develop a web interface(using GWT) for an existing application.
In the client side class file I would like to invoke a user specific class file, i understand that this is due to the fact that i am trying to invoke classes other than the ones http://code.google.com/webtoolkit/doc/latest/RefJreEmulation.html
I would like to know how this code can be called from the client side of the ui.
Thanks and Regards,
Bhavya
If you have a source code for the class you want to use and it is using only the supported Java classes, you can simply add your specific classes to client packages. If this is a reusable code, you can create a new GWT module and inherit it in your application. You can also simply move those classes to your client packages OR add a new client folder in you .gwt.xml file (add one more <source> tag)
If your class is not compilable by GWT, then I think you need to use it through RPC service.
If the code is translatable into JavaScript, you could for example put your individual class files into a jar and add it to the Build Path - as you would do in a 'regular' Java Project.
I am developing an app using Grails and GWT for a client side.
I want to use the same date format both on the client side and on the server side (preferably defined in one file).
So far i've understood that Grails got it's own mechanism for internationalization (grails-app/i18n). I know i can access these messages from any server code using app context.
I can also access any resource file inside web-app directory.
For the client side, i can use ConstantsWithLookup interface and GWT.Create(...) to get an instance of it.
But, i still haven't found good solution to integrate these two together, so i have date format defined in one place. Any ideas or tips?
Thanks,
Sergey
After digging into Grails more, i came to a solution.
I've put constant into .properties file under grails-app/i18n.
Then, i hook to eventCompileEnd and i copy resources from grails-app/i18n to specific package in target\generated-sources.
After this step is completed, i generate google I18N interfaces using copied property files.
I've put this functionality to separate plugin.
_Events.groovy:
includeTargets << new File("${myPluginDir}/scripts/_MyInternal.groovy")
eventCompileEnd = {
internalCopyMessageResources();
}
eventCopyMessageResourcesEnd = {
generateI18NInterface();
}
Now it is possible to access localized data from server side and from client side.