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• Is it possible to evaluate a JSP only once per session, and cache it after that?

  - by Bears will eat you

  My site has a nav menu that is dynamically built as a separate JSP, and included in most pages via <jsp:include />. The contents and styling of the menu are determined by which pages the user does and doesn't have access to. The set of accessible pages is retrieved from the database when a user logs in, and not during the course of a session. So, there's really no need to re-evaluate the nav menu code every time the user requests a page. Is there an easy way to generate the markup from the JSP only once per session, and cache/reuse it during the session?

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• MVC2 JSON action, if I want to be RESTful should I allow GET, POST, or Both?

  - by Yads

  The project I'm currently working has a whole bunch of JSON actions in order to populate cascading dropdowns via ajax calls. Since they're technically Select queries and we're trying to be RESTful, we've been marking these actions with the HttpGet attributes. However by default, JsonResultdoes not allow to return results via a GET. So we've had to explicitly call Json(data, JsonRequestBehavior.AllowGet). What I'm wondering is, is this bad practice? Should we only be allowing Post requests to our Json actions? If it makes a difference, this is an enterprise application, that requires a log in to a particular environment before it can be accessed.

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• "Passing Go" in a (python) date range

  - by anonymous coward

  The Rules: An employee accrues 8 hours of Paid Time Off on the day after each quarter. Quarters, specifically being: Jan 1 - Mar 31 Apr 1 - Jun 30 Jul 1 - Sep 30 Oct 1 - Dec 31 The Problem Employees will use an automated system to request paid time off, possibly occurring in the past, as well as the future. Requests should only be accepted if the employee has (or will have) that time available. For instance, if an employee only has 1 Day of Paid Time Off currently available (currently being January 20th), but is requesting 2 Days of Paid Time Off, beginning September 20th, the system should take into account that the employee would have accrued enough time off by then and allow the request. (Obviously ignoring that the employee may use up existing time before that date). I'm currently using Python, and wondering what the correct approach to something like this would be. I'm assuming that using DateTime objects, and possibly the dateutil module, would help here, but my brain isn't wrapping around this problem for some reason.

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• Will PHP script running on top of Apache be faster than C# stand alloun programm doing same thing (s

  - by Ole Jak

  I mean PHP scripts on Apache are oriented for many users to use tham at the same time. So will 1000 requests which came at the (relativly) same time be fully responsed faster than C# .Net programm perfoming algorithm 1000 times in while loop? So we input same data, we perform same algorithm, which is written in a wary same way (respecting language diferencis ofcourse), outputing same data (lat us say saving it to file for tham to be relativly equal) Who will be faster on some 1000 times of performing O(NN) algorithm, in which case (if it is possible) one will owerrun another?

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• Library of ALL countries and their states for address forms

  - by Chris

  I need a library that includes all countries and respective codes in 1 array and a second multidimensional array for country to its states and a last array for state code to state name. I found tons of matches for similar requests but none actually have a simple CSV or XML with just that. My goal is to build an address form where you select your country and it then pre-populates the state dropdown - if the country has states - with the country's states. Shouldn't be so hard to find, but I guess i'm blind. Thanks so much for all help!

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• Multiple HTTP request - Rails

  - by bradleyg

  My application checks a number of domains to see if they are valid (approx 100). I have the following code to check a single domain: def self.test_url uri, limit = 10 if limit == 0 return get_error_messages("001") end begin url = URI.parse(uri) response = Net::HTTP.start(url.host, url.port).request_head('/') rescue SocketError => e return get_error_messages("002") end case response when Net::HTTPRedirection then test_url(response['location'], limit - 1) else return get_error_messages(response.code) end end The code checks for the response code while taking into account redirects. This works fine. The only problem I have is when I put this in a loop I want it to run in parallel. So I don't have to wait for domain 1 to respond before I can request domain 2. I have managed this in PHP using curl_multi to run the requests in parallel. Is there a similar thing I can do in Rails?

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• Mongodb, simple IN problem

  - by afvasd

  Hi everyone I am new to mongo, this is my db design: product := { name: str group: ref, comments: [ ref, ref, ref, ref ] } comments := { ... a bunch of comments stuff } tag := { _id: int, #Need this for online requests tag: str, products: [ {product: ref, score: float}, ... ], comments: [ {comment: ref, score: float}, ...], } So my usage pattern is: GIVEN a product, find comments that have certain tag and sort them accordingly. My current approach involves: Look for that tag object that has tag=myTag pull all the comments out, sorted look for that product where product.name=myProduct pull all the comments out (which are dbrefs by the way) loop through the result of 2, and checking if they are in 4, (this I can do a limit 10) etc. It's pretty inefficient. Any better methods?

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• twisted .loseConnection does not immediately lose connection?

  - by Claudiu

  I have a server with a few clients connected to it. When CTRL+C is hit (that is, reactor starts shutting down), I want to close all my connections, wait until they are cleanly closed, and then stop. I do this by going through the connected clients' transports and calling .loseConnection(). On the ones that are connected locally, they immediately disconnect. However, on one that is connected through the internet, the connection is not immediately lost. Communication stops - and closing the client program no longer even tells the server that the connection has died, although it does before calling .loseConnection() - but the connection is not deemed 'lost' until a few minutes later after I send a few heartbeat requests from the server. I understand that if a connection dies, there's no way for the server to know unless it tries to send some data. But if I specifically ask for a connection to be closed, why does it not just close/disconnect immediately? Am I calling the wrong function?

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• Why there is so few AJAX (WEB 2.0) websites ?

  - by Frodik

  I am wondering and looking for some general reasons why there is so few full AJAX websites. Good example would be Gmail, which really uses a lot of the modern web technologies. But there is so few of these and almost all the websites use classic "request - pageload" approach. I am going to be developing website with most requests completed by AJAX call, as there is need for as few page loads as possible. So I am looking for some general advices or opinions about this. My personal big concern is search engines, because if most of the content is at one URL, how do you make that AJAX content crawlable ? There are probably more these questions which rise up, and I am looking for these to prepare for these problems before I start developing and it's too late to fix them.

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• How to access the service instance from host object in WCF?

  - by user1048677

  I am trying to incarnate some sort of ad hoc WCF service. I already managed to launch it and make it call its own web methods as some other guy's methods. The issue that I am facing is instance management. I have set [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single)] so it now has a global instance with the same properties for all clients. But besides that I need it to call other services of its kind while listening to incoming requests from clients (similar crazy services). While debugging I noticed that the ServiceHost's constructor calls the constructor of the service class. So, I assumed it has access to the global instance of this class and I need to find a way to call methods of this instance. Please don't ask what I have been smoking, I just have to make it ad hoc.

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• Ajax image upload and javascript edit on the fly with ASP.NET MVC (without saving to disk)

  - by gavss

  1) Uploadimage action gets requests from form posts. <form action="/content/uploadimage" method="post" enctype="multipart/form-data"> It reads HttpPostedFileBase stream data and sends it to the response. I need to show the image in a div container instead of sending it to the response as a file so that users can manipulate the image using jcrop. Image source is generated at runtime. I can't pass an action name to the src attribute. Is this possible using MVC and without using control viewstate? 2) I don't want to use flash or silverlight. Is there an easy ajax alternative to the method I use to get files from user?

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• Handling orientation changes yourself

  - by synic

  From the documentation regarding the android:configChanges='orientation' attribute of the activity tag in the manifest: Note: Using this attribute should be avoided and used only as a last-resort. Please read Handling Runtime Changes for more information about how to properly handle a restart due to a configuration change. Why does it say this? In the case of threads and networking requests via a service API library, a request could be made with a reference to the original Activity, and then an orientation change could occur, leaving the thread pointing to the old Activity. While this can be fixed, it's tedious and ugly compared to just handling the configuration changes yourself. Why should it be avoided?

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• curl multiple request session issue

  - by embedded

  I'm using curl multi API for multiple curl requests. first I'm using a single request to login to a site and save the cookie file. then I'm using the curl multi API to get some data from that site. The problem I'm facing is that from some reason the cookie file does not get read and I'm redirecting to the main login page. I must say that this work once in awhile so I can't point what went wrong. Any help would be much appreciated. Thanks

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• Perform tasks with delay, without delaying web response (ASP.NET)

  - by Tomas Lycken

  I'm working on a feature that needs to send two text messages with a 30 second delay, and it is crucial that both text messages are sent. Currently, this feature is built with ajax requests, that are sent with a 30 second javascript delay, but since this requires the user to have his browser open and left on the same page for at least 30 seconds, it is not a method I like. Instead, I have tried to solve this with threading. This is what I've done: Public Shared Sub Larma() Dim thread As New System.Threading.Thread(AddressOf Larma_Thread) thread.Start() End Sub Private Shared Sub Larma_Thread() StartaLarm() Thread.Sleep(1000 * 30) StoppaLarm() End Sub A web handler calls Larma(), and StartaLarm() and StoppaLarm() are the methods that send the first and second text messages respectively. However, I only get the first text message delivered - the second is never sent. Am I doing something wrong here? I have no deep understanding of how threading works in ASP.NET, so please let me know how to accomplish this.

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• Retain Site Background and Switch Pages?

  - by yar

  I was about to redo a Rails site today using AJAX so that the background could remain in place. Then I thought, "that would be exactly like using frames," and then I thought about SEO consequences and I dropped the idea entirely and took a look around the Web. It turns out that few sites -- except for Google itself, which has the link bar at the top -- are doing this. It doesn't look impossible to do, but it's not exactly easy. Aside from Ajaxing, you have to think about updating the query-string and having SEO-friendly links (that actually don't work, but rather make background requests via Javascript). Will any of the new technologies -- HTML5, perhaps -- solve this problem and allow us to have a Web with background colors (and other static elements) that do not disappear momentarily between page refreshes? On the other hand, why are few devs doing this with current technologies? Is it just not a big deal, too complicated to implement, or....?

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• How does OfType<T>() Work?

  - by TheCloudlessSky

  How does OfType() Work? I read this link about what's going on but how exactly does the LINQ provider know how to get all objects matching the specified type. I know the IQueryable<T> "chains" up requests and then evaluates when GetEnumerator() is called (right?). Specifically I want to know how does the framework quickly do type comparison? I wrote a method in a .NET 2.0 project that went like this (since 2.0 doesn't support these kind of features): public IEnumerable<TResult> OfType<TResult>() where TResult : class { foreach (TItem item in this.InnerList) { TResult matchItem = item as TResult; if (matchItem != null) { yield return matchItem; } } } Is this the best implementation?

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• how does tomcat like web container handle struts 2 variables ?

  - by mobby1982

  i am a newbie . i have a question regarding struts 2 framework and tomcat . i know that each request has it own thread , but my question is are the global variables defined in struts action shared amongst requests. for ex: if i have a global variable named say int pageNo; and i am using in say method called paginationAll() can i use the same variable (pageNo) for another method called say paginatonMaterialAll() in the same action or does each thread has its own set of variables even though globally defined?

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• Rails subscription limitations

  - by David Lyod

  I have an application with set limits on subscription attributes i/e a user can have five projects for subscription A but have ten for subscription B At present I run a check on there current usage when linking to the create action and if they are over there limit I do not display the link to create a new project. On the view (for the new project ) I again run the check (in a helper) to see if they can create a new project and if they are not I display a message stating so and a little upgrade link. Is this a secure method of stopping a user bypassing there subscription attribute limitations ? What about direct PUT requests etc ?

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• Loading external content with jquery or iframe?

  - by nailuenlue

  Hiho, There's an existing website that i need to include into another site which goes like this: a.mysite.com and i need to fetch content from this site in my www.mysite.com website... As i need to access the content of the iframe the Same origin policy produces a problem here. What i did was to configure mod_proxy on Apache to proxy pass all requests from www.mysite.com/a to a.mysite.com This will work fine...but my problem is that im not sure what the best way would be to include those pages. 1. Idea As the content of the iframe is a full featured site with a top navigation...left navigation etc....i would need to change the page template to only show the content box to be able to integrate that page in the iframe. 2. Idea I could just load the DIV where the content lies through JQuery.load() and integrate it into my site. What is the best way to accomplish such a task? How bad is both ideas from the SEO point of view?

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• Project management software

  - by fahadsadah

  Hello I am looking for a decent web application that performs project management, and am hoping you guys can help me out. Requirements: Free, open source software. Runs from a Linux server (no ASP.NET). Git integration. GitHub integration is a plus. Tracks bugs and feature requests. Version tracking/scheduling, ie being able to say that a feature will be implemented for version X. I was looking at Redmine, but I don't know about the last item. Is there a plugin for that, perhaps?

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• How do I go about getting the Ajax Queue plugin working in jQuery 1.3?

  - by jonyamo

  I have an app that sends multiple Ajax requests simultaneously. I was originally running into race conditions until I discovered the jQuery Ajax Queue plugin, which works great with jQuery 1.2, but fails with jQuery 1.3. There are actually two different versions of the plugin; I am currently using this one which is the same as the first but just adds a bit more functionality. Anyway, I am using Firebug on Firefox 3.0.10 and when I run my code I don't receive any explicit errors, the call is just never returned. I could obviously continue using v1.2 but would really like to learn why this plugin fails with the latest release and what I can do to get it working. Thanks in advance.

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• squid url_rewrite with cookie

  - by geekGod

  I have a squid 3.0 deployed which has a url_rewriter program which rewrites certain HTTP requests. I now need to modify this prpogram to rewrite along with the cookie setting code. As much as I have seen the url_rewrite_program documentation, it appears that I may not be able to set a cookie along with the 302 response. Is this correct? Can i set a cookie in the redirect response or would this require modifying the squid code. Appreciate any help in this regard!

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• What software or service can I use to programatically make phone calls with?

  - by Jason

  I'm looking to programatically make phone call reminders to customers based upon their opt-in requests. I am NOT a telemarketer. I need to make a phone call, and play a message. I need to leave a message after the beep if an answering machine or voicemail is detected. I need to know if the message was successfully delivered. Ideally, I could offer the user feedback by pressing a button and recording their selection. I prefer Windows and .NET but would consider anything. What do you suggest?

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• URL getRequestParameterMap not working

  - by DD

  I'm using IceFaces 1.8.2 and trying to get a parameter from the URL using: ((HttpServletRequest) FacesContext.getCurrentInstance() .getExternalContext().getRequest()).getParameter(name); This works fine on the inital request. However, when I do a partialSubmit on a component, it stops working. I'm assuming that its to do with how requests are processed when partial submits are done. Is there a workaround? At the moment, I'm having to ((HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext() .getRequest()).getQueryString(); and manually pass the query string. Thanks.

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• Multifunctioning in Javascript

  - by Starx

  The concept is running multiple functions concurrently. The reason is, I have a page which performs various actions through ajax. These actions includes making multiple backups of new files uploaded in the upload directory. But I want this process to be initiated by a moderator. As this is a very lengthy process(might even take hours to complete), it blocks others ajax requests from executing, until this process complete. I want to execute functions along with the previously executed function parallelly. I am using jQuery's Ajax to sent initiate the request.

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