I've got an implementation in RapidMiner that classifies questions according to Bloom's taxonomy. I need to consume the data produced by a web application developed in PHP and show the results in the interface of the web application.
So I'm wondering if it is possible that the application in PHP communicates with RapidMiner to process the data and show the results provided by RapidMiner in the interface.
I know RapidMiner is implemented in Java, and there is the option of using Java bridge to comunicate PHP and JAVA, but I'm not sure if that is a solution to this.
Why not try to communicate with xml, for example, PHP app sends a list of questions via xml to rm, it then processes it and returns an xml feed. I think this'll likely be the easiest solution.. As far as performance, I can't say one way or the other if it's the best solution
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tl;dr: Is Spring + Django back-end possible?
When I was new to industry and was still working my way around the office, I got interested in Django and created a very small, basic-level application using the framework. When I got to meet my team after a few weeks, they said to go for Spring framework. After spending half a year on the framework and the main proj, I finally started to get time to start working off-hours. But, I don't want to lose both the skills - My teammate(when we were still in office ;) ) once told me that they worked on a project that started with python code, and then later added features using Java. And I am unable to find any helpful google searches(mostly showing Spring vs Django).
How should I go about it? Is it too much to ask for? Is it worthwhile? Will I learn some new concepts of application architecture a noob like me would have missed. Please provide me with some insight.
Are there resources(docs) I can go through?
P.S. I'm not a diehard fan of either of the frameworks right now, just another coder testing waters.
You can't write java in python.
You can extend Python with C/C++ which is quite common: Extending Python with C or C++
And about the part that they told that they added features with java:
It's common to create different parts of a project using different languages and tools. Microservice architecture is a common architecture for these kinds of use cases. You basically code different parts of the project in a language you want and then you connect all the parts using different methods like REST APIs, gRPC and etc.
Imagine you are creating a website like youtube that lets others upload videos. There is a form that users upload their files and you store them in your storage and then you have to encode the video file for different qualities. You can code the form handler using Python and Django to store the files in your storage. Then you can code another service using java that handles the encoding part which is a heavy process. When an upload is completed, you send the file or file path to your java service using an internal REST API and tell the service to start encoding the video and notify the Django service and then the Django service will publish the video on the feed that can itself be written in another language.
I would say go for 1 framework and stick with it. For example Django if you want to code in python, and spring if you want to code in java. Learning both frameworks however brings a lot of value, because you can compare their benefits (eg. spring forces you to write clean code, django has build-in and simpler database management)
I like Django's build-in tooling a lot, you only need to know python for it to work. Spring requires a bit more knowledge of eg. hibernate for database management. However I predict Django will outgrow spring at some point, because of cloud valuing fast iteration over code and quick startup time (auto-scaling apps) over large overhead apps and long boot times. Hoever, if you like java, I can recommend JHipster for java/spring webapp development to get up to speed very fast and learning the ways of REST CRUD api fast.
To combine 2 programs: write your main logic in one app, and write a small service in the second language, making sure its independent of the first app (no back and forth communication and complicated logic, but simple independent request/response, as if the main app was never there). Add a REST api to the second app and use eg. http requests to communicate.
What's possible in terms of combining languages:
connect different applications with each other: by letting them communicate through their APIs. For example a python api developed with flask or django can send requests to a java api developed with spring, as long as they have a way to communicate (eg over http, or via some queue like rabbitmq)
connect a webapp to 2 different backends: by using a shared authentication system: For example a keycloak authentication server to handle tokens, that your backend applications know about.
What's not possible (and also not preferable):
combining java with python code in the same program: there are some hacky ways to get it to work, but its asking for trouble and not readable.
I'm sort of new to http://www.parse.com . And I want to develop backend in Java using REST API. It seems parse.com does not provides direct Java library for REST API development. But I found some third party libraries(un-official) like for Java:
JAVA
Almonds — A Java REST API that mimics the Android API.
mobile-parse-api — This library implements the REST API of parse.com in java with open interfaces for libgdx and playN.
Parse4J — Library for the REST API.
ParseFacade — Parse Android SDK alternative.
But I am not understainding how to get start with these libraries in order to create backend API in Java
#Mahendra
I assume by now you have found your answer. In case you haven't then here is a thought process that might be of interest.
From the little reading I have done on Parse.com it is a sort of like an Object database in itself which provides ready REST style api for all data stored there. See this - https://parse.com/docs/rest/guide
In addition they provide libraries for all popular Front Ends (iOS, Android, JS).
I think they are advocating a paradigm shift for programmers who are used to having a lot of processing on the Backend servers and exposing simpler rest API which provides a processed and targeted response to each http request.
Basically they are suggesting that the whole backend infrastructure (db, app server, server side logic etc) can be replaced by parse.com
If you are considering using Parse.com I assume you have read and understood above mentioned thought process and decided that it makes sense for your project.
I would advise you to consider using a using a common client side Java library that works with the Parse rest api and then use appropriate Client SDK (iOS, Java, JS etc) to work with your library and design the UI. Since you are asking about Java library, I assume your language of choice for storing processing logic is Java.
What I suggest next may be bit of a long shot ... but worth a consideration.
Write code non-ui code in Java and work with the Android API from Parse.com. Use a Java to Objective C. https://github.com/google/j2objc
This will also allow you to use Java code for your web browser (using GWT as a UI framework).
Then write UI code in the framework suited for the platform (obj c for ios, Java for Android, GWT + Java for web browsers) and use the java library to connect to Parse.com.
If you have already tried out such an approach would be good to write back opinions in a comment so the community may benefit.
I am constructing an application using flex. I want to be able to send data from one device (a tablet) to another (mobile phone) and vice-versa.I haven't found a way to do this using flex and heard that maybe using system calls might allow me to do this. I don't think there is a way to make system calls in flex, but I know that I can in Java.
Does anyone know how I can accomplish this? Sending the data? Using system calls or any other method?
And will I be able to combine the Java code into my flex project?
To invoke Java from Flex, you will have to create an Adobe Native Extension.
A nice tuto is available here
Could you provide more details about what you want to achieve? Sharing data between devices is really vague and could be achieved with very different solutions depending on the context.
I want to Use Some Java Code From the WCF Service. Basically I need to intreact with the java application from the .net so how can I make it out for that? Any guidance for that?
I was just wondering that how can i call java code from my .net desktop application? Do I need to create .exe file of my java poject or jar? How would I invoke that java project from my .net desktop application?
Like some code in .net desktopp application will call
void startprocessing ();
code written in java application
Let me Clear the Things What i want to implement..
I have one desktop appplication of windows and I want to integrate my speech recgnition facility in that application which is in java. What I want is to exchange the audio data as binary and some strings from .net application to my java application so I can process on that binary data to convert wav file and etc and recginze it..that is just completed ..but what I need to know is how to send those strings and some binary data to java application and just invoke that java application ?? Do I need to 'use'(?) wcf or other service ?
Going out on a limb here, sounds like you java app needs to expose the method you want to call via a web-service. That's of course assuming you have control over that in terms of the java app you're interacting with. Not sure though you can access that method simply by compiling your java app to native.
You can take a look at JNBridge, which provides interop possibilities between Java and .NET. However, as another poster has suggested, exposing the functionality through a web service is probably a better solution.
A quick Google search will give you plenty of information on how to create web services in Java, but for starters you can take a look at: http://docs.oracle.com/javaee/6/tutorial/doc/bnayl.html
I have Successfully done that with the axis 2 webservice with tomcat apache server with the following link..its too easy .i really got succeeded
http://blog.sencide.com/2011/06/create-web-service-using-apache-axis2.html
I want to create an application that submits same/similar data to sites containing web forms. These sites use PHP scripts...
I have a php script with me, that submits data in the manner that i require, to such forms. What I want to do is, design an entire web app around this code... I tried to obtain equivalent java code that does what the php code is doing, but could not obtain such code...
Since Google App Engine supports Quercus framework for PHP, what I am thinking now is, use the PHP code for actual submission of forms to their actions, and rest of application (that tracks all submissions and does other stuff like login/logout...) is in Java.
This would require some method by which I can pass the relevant form parameters from Java code to the PHP script, then some way for the php script to return the response of each submission back to the java code.
Is such an application doable? Pls keep in mind that I want to use Google App Engine for this purpose.
Nowadays it is possible to use different languages in different modules of the same app.
See Using both Java and Python with the new "Module" feature on AppEngine?
It should be doable with Quercus. We deploy a Python app that has some Java/Clojure backend processors but both languages are "native" to GAE. Using PHP will be a serious pain and not worth it all. I suggest that you just learn Python you will master it faster than using Quercus on GAE.
If you also go after PHP you stick to your LAMP knowledge. I suggest thay you do now!
Disclaimer: I wanted to use JRuby on AppEngine but I had a lot of difficulties (plus you have to know how everything works optimally on GAE) so I took up Python