I want to build a project on "Live Vehicle tracking system" using J2ee.following are my basic ideas-
a website from which end user can track the vehicle(tracking can be done on Google maps).
a GPS system embedded in the vehicle so that it can send location to the server.
i think of using J2ee.please suggest me whether to use this or any other language.
This is basic idea.please make correction if necessary.
Thank you
We are making sort of application using Spring ZK framework Maven and Mysql. Also we have our device for vehicle tracking. We already have some application made for tests. I can guarantee that J2ee is appropriate solution for it. We didn't have to made for example almost non of sql queries - all of them is easy to generate. We have experience in that field for 7 years and with different tools so yes that's good solution.
Related
I was wanting to use a file sharing server to keep certain files up-to-date and constant across multiple instances of my application across multiple computers - like (for example) writing a multiplayer game, which stores all the player's positions in a text file, and uses something like Dropbox to keep the text file constant across all the applications, and each application instance can change the file with that application's player's position, and then the rest of the applications can update accordingly. This is only an example, and is not what I intend to do using this technology. What I want to do does not rely on fast sharing of data very quickly - but only periodically downloading and updating the text file.
I was wondering how I might be able to do this using the Dropbox API for Objective-C without prompting the user for any Dropbox username/password - just store a single Dropbox account's login information, log into it automatically and update/download the file stored on it?
From what I have found out from experimenting, Dropbox prompts users for their passwords via a web-broswer, and is designed to accommodate multiple accounts, whereas I only need to accommodate the 'Server' account.
So, is there anyway to do this sort of thing using the Dropbox API, or should I use something else. Or do I need to find out how to write my own server. Using some sort of file sharing API seems a lot easier to me than writing an actual server.
Thanks for any help,
Ben
You might think about using Google App Engine (GAE). I had a similar requirement recently and I'm thinking this is a good option when you want centralized data. Plus you can do the no-browser account login by using your own custom authentication, or I think it's even possible via OAuth? Depends on how sensitive the data is I guess. I just rolled my own.
From my research I found that using Dropbox as a server has some issues with scalability, since you'll be limited to maybe 5,000 calls per day. source It's built on Amazon S3, so you could also look at using that directly.
GAE lifts that limit up to 675,000, but can be increased up to 91 million for free.
https://developers.google.com/appengine/docs/quotas
I did find an open-source project for doing this with Java, alternative you could look at Python example
I've written a daemon that continuously checks for updated files and syncs them. I wrote it for my own file manager iOS app. You can find the implementation here:
https://github.com/H2CO3/MyFile/tree/master/DropboxDaemon
I'm personally not an iOS developer but I came across this question while looking for something else and thought I would offer up another potential solution to the OP's question.
Microsoft just released something called Azure Mobile Services which supports iOS development (among other platforms). It's basically a convenient way to set up a back end system complete with push notifications, authentication, etc. without rolling your own. You don't need to know anything about Azure or servers as the setup process walks you through most of it. It is new so keep that in mind, but it looks promising for situations like this.
Here's a 10 minute video explaining how to use it with an iOS developed app along with links to more documentation:
http://channel9.msdn.com/posts/iOS-Support-in-Windows-Azure-Mobile-Services/
Hope this helps.
I develop -- from time to time -- yahoo open tables to access different resources on the web. Currently I am using a JavaScript editor and -- when I want to test if my open table works -- I upload the xml table description to a server to test it with a yql client application. However this approach is quite slow and -- sometimes -- I get blocked by yahoo, because of a mistake in my open table description. Therefore I would like to learn about best practices on how to test and develop yahoo open table locally. How does look your set up for the open table development?
To clarify my question, I am looking for any convenient way (best practise) to develop and test yql tables, e.g., running a part of a Java Script inside Rhino.
First of all: I agree that I don't see a really convenient way either to test YQL datatable definitions locally. Nevertheless, here is how I approach this issue.
Hosting on github
YQL datatable definitions are often used in very open scenarios e.g. when there is an existing API that you want to wrap via YQL. Therefore I am normally working on a fork of the YQL community tables and I just add my own definitions there. The hosting of the .xml files takes place on github in this case: https://github.com/yql/yql-tables
The other advantage of this approach is as well that it is easy for me to share my datatables with the community if I feel that they might be valuable for others as well.
Hosting privately
The free github account only comes with free repositories though, so everybody would be able to see and use your datatables. If that is not good for you then you could either buy a github pro account to get private repositories, or host the datatable definitions yourself.
To do that you can upload them to your own server - as you are already doing - or you should also be able to set up a web server like Apache locally on your machine and then get a dynamic hostname from dyndns.com or similar, so that you can point to this definitions from YQL. I have not tried this because github was working sufficiently well for me but I am sure that it is possible.
Why don't you just put the file you are editing in a public dropbox folder? This is what I do and it works pretty well.
An recent article has prompted me to pick up a project I have been working on for a while. I want to create a web service front end for a number of sites to allow automated completion of forms and data retrieval from the results, and other areas of the site. I have acheived a degree of success using Selenium and custom code however I am looking to extend this to a stage where adding additional sites is a trivial task (maybe one which doesn't require a developer even).
The Kapow web data server looks to achieve a lot of this however I am told it is quite expensive (currently awaiting a quote). Has anyone had experience with this, or can suggest any alternatives (Open Source ideally)?
Disclaimer: I realise the potential legality issues around automating data retrieval from 3rd party websites - this tool is designed to be used in a price comparison system and all of the websites integrated with it will be done with the express permission of the owners. Where the sites provide an API this will clearly be the favoured approach.
Thanks
Realised it's been a while since I posted this, however should anyone come across it, I have had lots of success in using the WSO2 framework (particularly the mashup server) for this. For data mining tasks I have also used a Java library that this wraps - webharvest - which has achieved everything I needed
I'm thinking sugest to my organization, to implement SVN for all users in my orgazination.
What is the best form to implement that?
What is the best tool to do this?
What is the best process to implement this?
I have any ideas to implement that. But I would like to hear some success stories, not to waste time on things that will not work.
In my organization we have successfully implemented SVN using a Windows server running Apache and for client access we use TortoiseSVN. The server is configured to access our information via LDAP.
We not only use it for keeping track of HTML code that goes into a huge content management system, but we also use it to store supporting documents and wireframes for those pages that are in Microsoft Word document form. TortoiseSVN diff is amazing for our Word wireframes. It will use change tracking built into Word to show us the customer changes made to the wireframes.
The drawback is that TortoiseSVN did have a learning curve and we actually had to teach users how to use it and the users were already technically savvy. So it will be really difficult to get average users to use TortoiseSVN properly.
I'm looking to develop an offline version of an application that still needs to connect to the live site to retrieve the information and store results.
The application is for an online course system, that now needs to work when an internet connection is either unavailable or flaky. The system currently tracks each page viewed of the course (with flash and video content) and then also displays and tracks the taking of multiple choice exams. This all needs to be provided offline. I'm thinking that the program will connect through the users account at the start to download either a portion or all of the course, including exams and then at the end connect again to upload the results. (It'd be cool if it could do the process automatically when a connection is available.) The application needs to look similar to the online version and needs to be easy to use (easy install, little user input required for upload/download of results).
I have done a bit of research and it looks like Adobe AIR might be a good middle ground between the online version and an offline version.
My biggest issue is that I don't have experience developing desktop applications as I am a PHP developer, so I'm looking for something like AIR that bridges the gap. (The online version is a LAMP application.)
Has anyone used Adobe AIR for this type of offline application? How easy and secure was it?
Are there other solutions out there?
I think AIR is a great choice for this. I use AIR all the time now for in house utilities I write.
The built-in database and persistent store are great.
From your description, it sounds like Google Gears is a little closer to what you're looking for.
Adobe AIR is a great solution for this. We are building something similar. But we are facing problems in resuming downloads if the download process gets broken.