web-applications

Efficient job progress update in web application

Hi, Creating a web application (Django in my case, but I think the question is more general) that is administrating a cluster of workers doing queued jobs, there is a need to track each jobs progress. When I've done it using database UPDATE (PostgreSQL in this case), it severely hits the database performance, because each UPDATE create...

How to script a URL screenshot without X?

I'd like to automate a 'screenshot' of arbitary URL's using a Linux build that doesn't have X installed. There appears to be some (costly) web services to do this, but I specifically want something I can do locally. Tried imagemagick without much success, though Mozilla used to have a command line option to do it? ...

Security approach in web application

Hello everyone. I am designing a web application in ASP.NET / C# where each registered user has the ability to add/modify/delete rows based on their user-id. Take this example: I am going to edit my route on the page /route.aspx?routeid=854 which belongs to me (user-id: 1). But because I am a curious guy I try to access /route.aspx?...

Webapp best practice template_dict

Hi, After just been coding for about 6-9 months. I probably changed my coding style a number of times after reading some code or read best practices. But one thing I haven't yet come a cross is a good why to populate the template_dict. As of now I pass the template_dict across a number of methods (that changes/modifies it) and returns...

Best Ways to send message or data to fax machine

I currently am working on a web application that needs to collect data from a form and will take the information and put it in a report format and sent it to a fax machine and print it out. What is the easiest way to do this. I would like it to act similar to collecting informastion off of a form and then sending an email, but I would l...

PHP front-end and Java back-end for a web app?

I'm designing a web application. I was wondering if it was feasible to design a php front end (using some php framework e.g. CakePHP), which stores and retrieves data to display to the user. Then develop a java backend which listens to the database for changes, and depending on what was changed, performs some actions and updates the da...

MySQL Query, Date Range From "Blacklist"

I have 2 databases. One is properties and the other is dates. In dates I have associated the land_id and a date (In YYYYMMDD format) which means that the date is not available. I need to formulate a query that a user can specify a start and end date, and then choose a property for which dates are available (not in the date database). H...

Compact web server with Lua support?

Hello, I need to find a very compact, cross-platform web server that can run Lua scripts, ie. either a regular web server like Mongoose that will forward queries to a Lua program in eg. FastCGI, or a web server itself written in Lua which will save the need to provide a separate web server. I recently started learning about Lua so am s...

What is major Difference between Adobe Flex and Microsoft Silverlight?

I want to develop a web Application to manage school administration. But I am not clear, which technology should I use to create Rich Internet Application. At present, develeopment company is going with ASP.net tools and say this is a web app. However, there is page refresh on every click. Which I don't like. Please suggest, where to p...

Tapestry 5, loading css from filesystem

We are creating a Tapestry 5 webapp with an external designer creating and maintaining the css-files of the application. We would like him to be able to make changes to the css-files without the need to change the webapp, prefarably in the configurable path in the filesystem. So what would the best way to do this with Tapestry 5? ...

Unable to find web resource from assembly

I'm trying to load web resources from a linked assembly. Whatever I try, I get the exception: Web resource 'MyNameSpace.scripts.jquery-min.js' was not found. I'm using the following code to load it: ScriptManager.RegisterClientScriptResource(this, typeof(MyNameSpace.SomeClass), "MyNameSpace.scripts.jquery-min.js"); What am I missing...

What web UI framework is most suitable for building dynamic pages / forms?

Hello, We are at a stage where we are considering different Web UI frameworks (most likely component based ones such as GWT, JSF, Wicket, Vaadin, etc). One of the main use cases / constraints is that it must support generating dynamic pages. I.e., the page/form layout and components is stored in a database and is changeable at runtime,...

How to determine page generation time with Struts 2 ?

I'm using Struts 2 and I'd like to determine the page generation time without an external profiler. I can easily profile the actions execute() method, but I don't know how to include the time spent before (in dispatchers, interceptors...) and after (time taken by the servlet corresponding to the view ("jsp time")). Is there simple way t...

dynamically updating file being served by Apache/IIS

Hi, In my application, I am serving the video clips on server and I need to update the playlist of this video clips being served on server through IIS/apache server. Now, When a user is accessing the play list from server and application tries to update that file, it fails... following is the approach I am taking... Create tmp file -> ...

Is it possible to know if browser has cookies enabled on the very first access

Hello On a very first access to a website, is it possible to know if browser cookies are activated thanks to the GET request? Is it possible particularly in a J2EE context? On the server side (no ajax/js solution) ...

Noob here, but wanting to try and make my own app.

Hi all, I have a small amount of programing experience with Siemens and Allen Bradley but would like to make my own app for a certain website I frequent. I would like the website to be a little more user friendly for me instead of having to open browser etc. Is it possible to have a simple forum translated into a widget so you can see ...

tptp/profiling of web-application within eclipse - no data collectors available

Hi, I have a problem with tptp/profiling within eclipse. Because at first I had some very strange problems, I downloaded the “TPTP all-in-one package” (tptp.runtime.allInOne.win32.win32.x86-TPTP-4.6.2.zip) and added the stuff I need (Jboss-Tools, etc.) I am using Windows XP SP3, Java 6u20, Eclipse 3.5.2.(, jboss-4.2.3.GA-jdk6) In "Pr...

Efficiently making web pages from multiple servers

I want to create a service that allows diverse web site owners to integrate material from my web servers into content served from their own servers. Ideally the resulting web page would only be delivered from the web site owners server, and the included content would be viewed as being part of the site by Google - which I think would rul...

How do you determine up/down latency of a web app.

I am trying to work out how to calculate the latency of requests through a web-app (Javascript) to a .net webservice. Currently I am essentially trying to sync both client and server time, which when hitting the webservice I can look at the offset (which would accurately show the 'up' latency. The problem is - when you sync the time'...

iPhone webapp: my ressources don't get cached

Hello, First of all, I'd like to say I'm not using any off-line feature from HTML5. I have a web-application which runs on the iPhone. When viewing it from safari, everything works quite well. But when I launch the application from the home screen (to remove the navigation bar), it can be really slow. I checked the logs in Apache and...