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• Reading Windows ACLs from Java

  - by Matt Sheppard

  From within a Java program, I want to be able to list out the Windows users and groups who have permission to read a given file. Obviously Java has no built-in ability to read the Windows ACL information out, so I'm looking for other solutions. Are there any third party libraries available which can provide direct access to the ACL information for a Windows file? Failing that, maybe running cacls and capturing and then processing the output would be a reasonable temporary solution - Is the output format of cacls thoroughly documented anywhere, and is it likely to change between versions of Windows?

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• Thread-safe queue in Javascript or jQuery

  - by at

  I have many asynchronous AJAX calls whose results will get processed. It doesn't matter what order the processing occurs, but the results need to get processed one at a time. So I'd like to simple do my AJAX calls and they all just put their results in a single queue. That queue should then get processed on a single thread. This way the results get processed one at a time as soon as possible. What's the best way to do this? I'm using jQuery, so happy to take advantage of any facilities it provides for this.

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• Estimate serialization size of objects?

  - by Stefan K.

  In my thesis, I woud like to enhance messaging in a cluster. It's important to log runtime information about how big a message is (should I prefer processing local or remote). I could just find frameoworks about estimating the object memory size based on java instrumentation. I've tested classmexer, which didn't come close to the serialization size and sourceforge SizeOf. In a small testcase, SizeOf was around 10% wrong and 10x faster than serialization. (Still transient breaks the estimation completely and since e.g. ArrayList is transient but is serialized as an Array, it's not easy to patch SizeOf. But I could live with that) On the other hand, 10x faster with 10% error doesn't seem very good. Any ideas how I could do better?

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• PHP - Looking for an HTML Generator/Manager

  - by John Himmelman

  I'm trying to find a tool that I can use to generate markup programatically (non-irl word). Here is an example of what I'm trying to accomplish in pseudo-code... $htmlDoc = new HTML_Document(); $htmlDoc->setTitle('Cool Title'); $htmlDoc->addJs('some_js_file.js'); $htmlDoc->addStylesheet('some_css_file.css'); $divElement = new HTML_Element_Div(); $htmlDoc->append('body', $divElement); $output = $htmlDoc->generate(); What is the best tool for this?

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• Restfull authentication between two GAE apps.

  - by user259349

  Hello everyone, i am trying to write a restful google app engine application (python) that accepts requests only from another GAE that i wrote. I dont like any of the ways that i thought of to get this done, please advice if you know of something better than: Get SSL setup, and simply add the credentials on the request that my consuming app will send. I dont like it cause SSL will slow things down. Security by obsecurity. Pass a long number by my consuming app that is in Xmod0, where X is a secret number that both applications know. I just,,,, dont like this. Check the HTTP header to see where is the request coming from. This option is the one that i hate the least, not alot of processing, and spoofing an HTTP request is not really worth it, for my application's data. Is there any other clean solution for this?

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• How do I get the XAML compiler to use textual content property on custom classes?

  - by Duncan

  Given a simple C# class definition like: [System.Windows.Markup.ContentProperty("PropertyOne")] public class SimpleBase { public string PropertyOne { get; set; } public string PropertyTwo { get; set; } } why is it not possible to omit the sys:string tags around the word Test in the xaml below. <custom:SimpleBase x:Class="TestType" xmlns:custom="clr-namespace:ConsoleApplication1;assembly=" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:sys="clr-namespace:System;assembly=mscorlib"> <sys:String>Test</sys:String> </custom:SimpleBase> Somehow the compiler correctly converts text to string for the type String, why doesn't it work for my custom type? The context can be found on my blog: http://www.deconflations.com/?tag=xaml

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• Trying to determine best design for this workflow - c# - 3.0

  - by ltech

  Input Server - files of type jpg,tif, raw,png, mov come in via FTP Each file needs to be watermarked, if applicable, and meta data added to the file Then each file needs to be moved to an orders directory where an order file is generated and then packaged as zip file and moved to processing server. The file names are of [orderid_userid_guid].[jpg|tif|mov|png...] As I expect the volume to grow I dont want to work on one file at a time and move it through the work flow. I would prefer multi threaded/asynchronous if possible..

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• Line breaks in "NSString"s returned from PList don't work.

  - by Moshe

  I've seen this post: http://stackoverflow.com/questions/2035567/nsstring-newline-escape-in-plist but I'd like to know if there's a way to pragmatically render \n line breaks. I'm currently using: decisionText.text = [NSString stringWithFormat: (@"%@", [replies objectAtIndex:(arc4random() % [replies count])])]; Which randomly grabs a String from the replies array. The array was loaded from a plist like so: replies = [[NSMutableArray alloc] initWithContentsOfFile:[[NSBundle mainBundle]pathForResource:@"AdviceList" ofType:@"plist"]]; What am I missing? The answer can't be to manually enter line breaks. That's not programming! (Sounds like word processing to me.)

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• Stata output files in surveys

  - by William Shakespeare

  I have some survey data which I'm using Stata to analyze. I want to compute means of one variable by group and save those means to a Stata file. My code looks like this: svyset [iw=wtsupp], sdrweight(repwtp1-repwtp160) vce(sdr) svy: mean x I tried svy: by grp: mean x but that did not work. I could save each mean to a separate file by simply saying svy: mean x if grp==1 but that's inefficient. Is there a better way? Saving results to a file like one can use SAS ODS to capture results is also a need. I am not talking about the log here. I need the means and the associated group. I'm thinking estimates save [path],replace but I'm not sure if that will give me a Stata file or the group if I can figure out how to use by processing.

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• Default Accessor Needed: Custom ConfigurationSection

  - by Mark

  I am totally confused by a simple Microsoft error message. When I run XSD.exe against an assembly that contains a custom ConfigurationSection (which in turn utilizes a custom ConfigurationElement and a custom ConfigurationElementCollection, as well as several ConfigurationProperties), I get the following error message: Error: There was an error processing 'Olbert.Entity.Utils.dll'. There was an error reflecting type 'Olbert.Entity.DatabaseConnection'. You must implement a default accessor on System.Configuration.ConfigurationLockCollection because it inherits from ICollection. Yet the class in question has a default accessor: public object this[int idx] { get { return null; } set { } } I realize the above doesn't do anything, but I don't need to access the element's properties by index. I'm just trying to work around the error message. So what's going on?

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• Tapastry error about not having a tml only for some requests

  - by dinesh707

  Object onActivate(final String jsonRequest){ return new StreamResponse() { private InputStream inputStream; public void prepareResponse(Response response) { I'm using the above code to generate a XML as the response. When I test it in browser, it works fine. But when I send my request from Android application i get the following error on server side. [ERROR] TapestryModule.RequestExceptionHandler Processing of request failed with uncaught exception: Page catalog/Index did not generate any markup when rendered. This could be because its template file could not be located, or because a render phase method in the page prevented rendering. java.lang.RuntimeException: Page catalog/Index did not generate any markup when rendered. This could be because its template file could not be located, or because a render phase method in the page prevented rendering.

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• Objective C -- property lists or text files?

  - by William Jockusch

  I need to import a list of about 40,000 words into my Iphone app. The list will be the same every time the app starts. It seems that property lists and text files are reasonable options. Any reason to prefer one over the other? For reasons I don't understand, finder says the property list on my mac is 1MB, while the text file is only 328K. The property list is an NSMutableArray of NSMutableArrays of NSStrings. The text file is a plain txt file. But amount of time the app takes to start up is also important. If I read in a text file, my app would have to do some simple processing on it each time it starts. Thanks.

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• What is the full "for" loop syntax in C (and others in case they are compatible) ?

  - by fmsf

  I have seen some very weird for loops when reading other people's code. I have been trying to search for a full syntax explanation for the for loop in C but it is very hard because the word "for" appears in unrelated sentences making the search almost impossible to Google effectively. This question came to my mind after reading this thread which made me curious again. The for here: for(p=0;p+=(a&1)*b,a!=1;a>>=1,b<<=1); In the middle condition there is a comma separating the two pieces of code, what does this comma do? The comma on the right side I understand as it makes both a>>=1 and b<<=1. But within a loop exit condition, what happens? Does it exit when p==0, when a==1 or when both happen? It would be great if anyone could help me understand this and maybe point me in the direction of a full for loop syntax description.

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• Routing a location that matches one controller to another

  - by Luca Romagnoli

  Hi I have a controller named "places" with some actions like "view", "new", "create" When a user goes to mysite.com/places I want to execute the action "show" of another controller called "cores" So I've put this in the routes.rb file: map.connect '/:id/show', :controller => "cores", :action => "show" But it doesn't work. I receive this error: Processing PlacesController#show (for 127.0.0.1 at 2010-04-16 00:52:07) [GET] ActionController::UnknownAction (No action responded to show. Actions: admin_denied, admin_required, auto_complete_for_location, auto_complete_for_name, change_location, create, create_facebook_session, create_facebook_session_with_secret, edit, exist, facebook_params, facebook_session, facebook_session_expired, facebook_session_parameters, get_form, is_admin?, new, one_or_true, redirect_to, render_publisher_error, render_publisher_interface, render_publisher_response, set_facebook_session, top_redirect_to, update, wants_interface?, and zero_or_false): How can i do to map that action in another controller? thanks

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• Using multithreading for loop

  - by annelie

  Hello, I'm new to threading and want to do something similar to this question: http://stackoverflow.com/questions/100291/speed-up-loop-using-multithreading-in-c-question However, I'm not sure if that solution is the best one for me as I want them to keep running and never finish. (I'm also using .net 3.5 rather than 2.0 as for that question.) I want to do something like this: foreach (Agent agent in AgentList) { // I want to start a new thread for each of these agent.DoProcessLoop(); } --- public void DoProcessLoop() { while (true) { // do the processing // this is things like check folder for new files, update database // if new files found } } Would a ThreadPool be the best solution or is there something that suits this better? Thanks, Annelie

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• Importing large datasets on iPhone using CoreData

  - by Matthes

  Hi there, I'm facing very annoying problem. My iPhone app is loading it's data from a network server. Data are sent as plist and when parsed, it neeeds to be stored to SQLite db using CoreData. Issue is that in some cases those datasets are too big (5000+ records) and import takes way too long. More on that, when iPhone tries to suspend the screen, Watchdog kills the app because it's still processing the import and does not respond up to 5 seconds, so import is never finished. I used all recommended techniques according to article "Efficiently Importing Data" http://developer.apple.com/mac/library/DOCUMENTATION/Cocoa/Conceptual/CoreData/Articles/cdImporting.html and other docs concerning this, but it's still awfully slow. Solution I'm looking for is to let app suspend, but let import run in behind (better one) or to prevent attempts to suspend the app at all. Or any better idea is welcomed too. Any tips on how to overcome these issues are highly appreciated! Thanks

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• paperclip error

  - by ZX12R

  i am trying paperclip for the first time and followed this tutorial all is well until i use styles. this is the code has_attached_file :photo, :url => "/uploads/products/:id/:style/:basename.:extension", :path => ":rails_root/public/uploads/products/:id/:style/:basename.:extension", :styles => { :thumb=> "100x100#" } the error i see on the console is [paperclip] An error was received while processing: #<Paperclip::NotIdentifiedByImageMagickError: C:/DOCUME~1/LOCALS~1/Temp/stream,2956,1.jpg is not recognized by the 'identify' command.> what does this mean? I have no idea what it means. Should i install this ImageMagick? I tried installing it as a plugin as per this page. This also returns an error that "plugin not found". what am i missing here?

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• how to detect an IMAPMessage is not an email but a Task or Calendar item

  - by raticulin

  I am accessing Lotus and Groupwise using javamail via IMAP, recursively accessing all folders and processing email I find. But in folders like Tasklist and Calendar (those are from Groupwise but I think I remember Lotus had similar things), I get the items in there as instances of IMAPMessage, and so they are processed as if they were mail. I understand those items get exposed as mail through the IMAP protocol (either by design or by mistake), but I only want to process proper mail. Is there a way to do this? I have dismissed following approaches so far: Make sure the message has a message-id, at least in Groupwise Calendar items have it. Ignore folders by name (such as Calendar and Tasklist): is not totally correct as a user can move mail inside those folders. What I am looking is some IMAP api call I have missed so far or something in those lines...

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• Erlang: Interfacing with Xalan: port driver or nif?

  - by mwt

  I'd like to get a real XSLT processor working with erlang. Which would be the best interface, nif or port driver? According to the nif documentation, nif calls block the runtime, so they should not take long. Is processing a long xml document too long? Also, I'd like to allow erlang callbacks during the transformation. Does that seem possible? Possible with nif but not port drivers or vice versa? I've never written any C, so I figured this would be good introduction. Xalan is C++. I assume nif can work with that, right?

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• recommendations for rich scalable internet application

  - by Wouter Roux

  I am planning to develop a web application that must perform the following actions: User authentication allow authenticated user to download data from USB device (roughly 5 meg data) upload the data from the USB device to processing server process the data and display the results to the user further requirements/restrictions: the USB driver supports windows (2000, XP, Vista, 7) the application must support IE, Firefox and Chrome the USB driver must be installed when pointing to the web application the first time the USB driver exposes functionality through exported functions in dll scalability and eye candy is important server details: Windows Server 2008 Enterprise x64, IIS 7.0, SQL server 2008 With the limited details specified: What technology would you recommend? (eg silverlight/asp.net mvc/wcf). What practices/patterns/3rd party controls would you recommend?

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• Why can XSLT not parse this XML?

  - by Matt W

  Taking the XSLT and XML from this page as an example: http://www.w3schools.com/xsl/xsl_transformation.asp I have an xml file which contains (above example modified): <?xml version="1.0" encoding="ISO-8859-1"?> <?xml-stylesheet type="text/xsl" href="cdcatalog.xsl"?> <catalog xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://tempuri.org/"> <cd> In my case, the output contains nothing when the XSLT/XML is processed by the browser. The moment I remove the attributes from the element, it works. Problem is, I don't really have the option of pre-processing those attributes out of the file. Can anyone explain how to force the XSLT to work with the XML as is, please? After all, those attributes seem fairly standard. Many thanks, Matt.

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• render HTML (convert to bitmap)

  - by MK

  Can somebody recommend the best (and preferably portable) way to render HTML documents onto a bitmap? As far as I understand my main 2 options are WebKit and Gecko, but I wasn't able to find a good starting point on how to do it. When I last tried doing this 5 years ago, I ended up using Gecko to send the document to a printer, which is not really what I need. I need rendering to a in-memory bitmap. To clarify: server side, no Java, no .NET, batch processing, performance, not interactive, no Javascript.

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• Storing And Using Microsoft User Account Credentials in MS SQL Srv 2008 Database

  - by instantmusic

  I'm not exactly positive how to word this for the sake of the title so please forgive me. Also I can't seem to figure out how to even google this question, so I'm hoping that I can get a lead in the right direction. Part of my software(VB.NET App) requires the ability to access/read/write a shared network folder. I have an option for the user to specify any credentials that might be needed to access said folder. I want to store these credentials given in the MS SQL Database as part of the config(I have a table which contains configuration). My concern is that the password for the user account will be unencrpyted. Yet, if I encrypt the password the VB.NET App And/Or database will be unable to use the credentials for file i/o operations unless the Password is unencrypted before use. I'm fishing for suggestions on how to better handle this situation.

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• Someone explain to me the meanings behind the naming conventions used in .net?

  - by IbrarMumtaz

  I need someone to explain the following names; Asynchronous Delegates. Asynchronous methods. Asynchronous events. I'm currently going over this for my 70-536 exam and I am covering all my bases so far. The threading chapter and online resources have been good to me on my second read through. Still though, the names used above mean absolutely nothing to me? I would really appreciate the meaning behind the word 'Asynchronous' and its relevance to Delegates, methods and events. Feel free to go into as much detail as you like. Thanks, Ibrar

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• Retail knowledge inference

  - by blueomega

  So i am doing a research on how can i infer knowledge from reports (not with a specific format), but after pre processing, i should have some kind of formatted data. A fairly basic inference would be: "Retailer has X stock." and "X is sellable." - "Retailer sells X" the knowledge i focus is retail domain oriented, and if possible i should improve its efficiency with each iteration. Is this scifi(some of my friends think it is)? The related stuff i find online are "expert systems" that find anomalies, fuzzy inference systems and some rants about "easy knowledge". Can you help me with some points for me to focus or orient me in some research directions? blueomega

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