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• Mysql: ROLLBACK for multiple queries

  - by Raj

  Hi I have more than three MySql queiries in a PHP script triggered by scheduled task. If a query catch an error, script throw an exception and rollback that Mysql query. It works fine. However if first query works fine, but not 2nd query, throw an exception, it rollback 2nd one but not 1st query. I am using begin_trans(), commit and rollback() for individual queries because Sometimes i need to rollback one query, sometimes all queries. Is there any way to rollback one query or all queries? Thanks in advance UPDATE: I got it working, there was no problem with in begin_trans(), commit and rollback(), the database connection config was different for one query from other queries, crazy code without any comments!!!

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• Question About DateCreated and DateModified Columns - MS SQL Server

  - by user311509

  CREATE TABLE Customer ( customerID int identity (500,20) CONSTRAINT . . dateCreated datetime DEFAULT GetDate() NOT NULL, dateModified datetime DEFAULT GetDate() NOT NULL ); When i insert a record, dateCreated and dateModified gets set to default date/time. When i update/modify the record, dateModified and dateCreated remains as is? What should i do? Obviously, i need to dateCreated value to remain as was inserted the first time and dateModified keeps changing when a change/modification occurs in the record fields. In other words, can you please write a sample quick trigger? I don't know much yet... Any help will be appreciated.

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• Can you automatically create a mysqldump file that doesn't enforce foreign key constraints?

  - by Tai Squared

  When I run a mysqldump command on my database and then try to import it, it fails as it attempts to create the tables alphabetically, even though they may have a foreign key that references a table later in the file. There doesn't appear to be anything in the documentation and I've found answers like this that say to update the file after it's created to include: set FOREIGN_KEY_CHECKS = 0; ...original mysqldump file contents... set FOREIGN_KEY_CHECKS = 1; Is there no way to automatically set those lines or export the tables in the necessary order (without having to manually specify all table names as that can be tedious and error prone)? I could wrap those lines in a script, but was wondering if there is an easy way to ensure I can dump a file and then import it without manually updating it.

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• Invoke an action that is using ASP.NET MVC [Authorize] from outside the application

  - by Nate Bross

  Is this possible? I'd like to expose a URL (action) such as http://mysever/myapp/UpdateHeartbeat/. In my MVC application it looks like [Authorize] [AcceptsVerbs(HttpVerbs.Post)] public ActionResult UpdateHeartbeat() { // update date in DB to DateTime.Now } Now, in my MVC application the user has logged in via FORMS authentication and they can execute that action to their hearts content. What I want to do, is hit that URL progromatically (as part of an API that I wouldl like to build) -- is there a way I can do that without removing the [Authorize] attribute and adding username/password as parameters to the POST?

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• How should I move my code from dev to production?

  - by Teddy

  I have created a PHP web-application. I have 3 environments: DEV, TEST, PROD. What's a good tool / business practice for me to move my PHP web-application code from DEV to TEST to the PROD environment? Realizing that my TEST environment still only connects to my TEST database; whereas, I need to PROD environment to connect to my PROD database. So the code is mostly the same, except that I need to change my TEST code once moved into PROD to connect to the PROD database and not TEST database. I've heard of people taking down Apache in such away that it doesn't allow new connections and once all the existing connections are idle it simply brings down the web server. Then people manually copy the code and then manually update the config files of the PHP application to also point to the PROD instance. That seems terribly dangerous. Does a best practice exists?

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• Increasing number once per mouse click/key press in XNA

  - by DMan

  This has been bothering me lately- when I use some code like below to increase selection every mouse click: if (m.LeftButton == ButtonState.Pressed) currentSelection++; Then currentSelection increases by a ton, simply because this code is in my Update() function and by design, runs every frame and so increases currentSelection. There is almost no chance you can click and release fast enough to prevent currentSelection from increasing more than one. Now my question is what I should do to make it so everytime I click the mouse down once, it only increases currentSelection once until the next time I click down again.

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• How do i make an installer instead of a crash (.NET)

  - by acidzombie24

  My situation is Using .NET 3.5 Using SDL.NET Need to make a friendly installer or warning system. Chances are the user will be on XP (.NET 1.1). If possible can i do something to let the user know he needs to update to 3.5? Maybe have a yes/no dialog which downloads and install the .NET runtimes for him? Now how do i detect if the user has sdl.net installed (chances are its in program files/sdldotnet) and let them know they need sdl.net runtime and have a yes/no dialog that brings them to http://sourceforge.net/projects/cs-sdl/files/ The problem i have mostly is how to make the app not outright crash and how to download 3.5 .NET runtime if it is possible.

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• Xcode5 post-archive script for Sparkle package no longer works

  - by Flyingdiver

  Xcode 5 seems to have changed the way it stores the build application package (xxx.app) such that ditto no longer works. In the ../BuildProductsPath/Release/ directory, the app is actually a symlink to .../InstallationBuildProductsLocation/Applications/... MyApp.app - ~/Library/Developer/Xcode/DerivedData/MyApp-emwilkqhlayanxahjpexlpbbkato/Build/Intermediates/ArchiveIntermediates/MyApp/InstallationBuildProductsLocation/Applications/MyApp This breaks the ditto command I was using to create a zip file of the application to put on my Sparkle update server. Anyone have an updated script for building the Sparkle XML and ZIP files? Or know what environment variable I need to use to locate my actual binary after the Archive phase?

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• Tools and ways to generate HTML help for built-in help system (QtHelp)?

  - by BastiBense

  Hello, I'm in the progress of implementing a built-in help system based on QtHelp into my application. Since QtHelp is based on Qt's help collection files, I need to produce a set of HTML pages. Since I won't be writing the documentation alone (a few of my colleagues will write, too), I am looking for the best way to produce these files. We are internally using a Wiki, and I know that the documentation should be written in some kind of markup language instead of giving all authors a WYSIWYG HTML editor. So my question is, are there tools out there which help with the process of generating documentation that can be exported as a set of HTML files, and possibly, as PDFs, too?. Thanks in advance! Update: I'm already using Doxygen for C++ documentation generation. But I'm not exactly looking for an API-Documentation generator, but something like LaTeX, which allows you to format the documentation contents like a markup document (much like a Wiki).

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• Rails and MongoDB with MongoMapper

  - by FCastellanos

  I'm new to Rails development and I'm starting with MongoDB also. I have been following this Railscast tutorial about complex forms with Rails but I'm using MongoDB as my database. I'm having no problems inserting documents with it's childs and retrieving the data to the edit form, but when I try to update it I get this error undefined method `assert_valid_keys' for false:FalseClass this is my entity class class Project include MongoMapper::Document key :name, String, :required => true key :priority, Integer many :tasks after_update :save_tasks def task_attributes=(task_attributes) task_attributes.each do |attributes| if attributes[:id].blank? tasks.build(attributes) else task = tasks.detect { |t| t.id.to_s == attributes[:id].to_s } task.attributes = attributes end end end def save_tasks tasks.each do |t| t.save(false) end end end Does anyone knows whats happening here? Thanks

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• Opening Office 2007 Documents from in memory storage - How?

  - by John S

  Hi there, I'm a C++ developer wrestling with updating an application that had made extensive use of the IStorage interface to open pre-Office 2007 documents from in-memory storage (via ILockBytes). If you are still following me so far, you probably know that the new Office Document formats are incompatible with IStorage containers. The application I'm trying to update, relied upon the IPersistStorage interface that all Office applications have, and the code as written calls the load method of IPersistStorage to read in a document from IStorage interface. So the question is.... What kind of COM interfaces are available to me to read in, from an in memory container, an Office 2007 document? John "S"

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• Ruby: change each value in a hash with something like #collect for arrays?

  - by Adam Nonymous

  Hi! I'd like to replace each value in a hash with value.some_method. For example in a simple hash {"a" = "b", "c" = "d"} every value should be .upcase-d so it looks like {"a" = "B", "c" = "D"}. I tried #collect and #map but always just get arrays back. Is there an 'elegant' way to do this? Thanks in advance, Adam Nonymous UPDATE: Damn, I forgot: The hash is in an instance variable which should not be changed. I need a new hash with the changed values, but would prefer not to define that variable explicitly and then loop over the hash filling it. Something like new_hash = hash.magic {...} ;)

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• jQuery Validation 1.10 and MVC server-side errors

  - by sam360

  This feature used to work just fine on my website. If I added a custom error to ModelState, the input on the page would be marked as "input-validation-error" and the Html.ValidationMessage() would take care of rendering a span with the error message inside it. Due to incompatibility reasons we had to upgrade our jQuery Validation to 1.10: Now when I add a custom error to ModelState, I can debug and see that the HTML elements being rendered correctly, but as soon as the page load is completed, jQuery Validation removes the error message and set the "class" attribute of the input to "valid"! Has any one else come across this issue? UPDATE Testing further shows that the error message is shown on the screen until the field gains focus. As soon as the field gains focus jQuery Validation removes the customer server-side error message and marks the field as good.

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• Drupal htaccess redirect - all files in directory to new directory

  - by hfidgen

  Hiya, I've moved a site to Drupal, but am now getting a lot of 404 errors due to the search engines taking their time to update the indexes. The 404 paths all look similar to this: recipedata/ccp1300006/633_L.jpg recipedata/ccp1500005/risotto.jpg recipedata/ccp1500006/haddock.jpg So I'd like to do some htaccess redirection with mod_rewrite to take care of this lot. All the images DO exist - the path has just changed to /sites/default/files/images/ I've edited a lot of redirects into my htaccess already, but because the ccpXXXXXX directory changes I can't quite figure out the regex. This was my last attempt, but yeah - doesn't work :) Can anyone give me some pointers? RewriteRule ^recipedata/(ccp+)/(.+)$ http://domain.co.uk/sites/default/files/images/$2 [R=301,L] This has to be in the context of the Drupal mod_rewrite rules which already exist <IfModule mod_rewrite.c> RewriteEngine on # Rewrite URLs of the form 'x' to the form 'index.php?q=x'. RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_URI} !=/favicon.ico RewriteRule ^(.*)$ index.php?q=$1 [L,QSA] </IfModule> Thanks!

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• Performance monitor shows 4294967293 sessions active

  - by TGnat

  I have an ASP.Net 3.5 website running in IIS 6 on Windows Server 2003 R2. It is a relatively small internal application that probably serves less than ten users at any given time. The server has 4 Gig of memory and shows that 3+ Gig is available while the site is active. Just minutes after restarting the web application Performance monitor shows that there is a whopping 4,294,967,293 sessions active! I am fairly certain that this number is incorrect; at the time this reading there were only 100 requests to the website. Has anyone else experienced this kind odd behavior from perf mon? Any ideas on how to get an accurate reading? UPDATE: After running for about an hour the number of active sessions has dropped by 4. So it does seem to be responding to sessions timing out.

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• blackberry phonegape with eclipse configuration

  - by kailash

  I have been trying to run my simple hello world project in blacberry. While installing the package from "BlackBerry Update Site - http://www.blackberry.com/go/eclipseUpdate/3.6/web" i got following issues. Some sites could not be found. See the error log for more detail. No repository found at download.eclipse.org/rt/rap/1.3/runtime. No repository found at download.eclipse.org/modeling/emft/eef/updates/0.7.1/. No repository found at download.eclipse.org/stp/updates/. Unable to read repository at file:/C:/Eclipse1/p2/org.eclipse.equinox.p2.repository No repository found at download.eclipse.org/modeling/mdt/papyrus/updates/releases/. HTTP Server 'Internal Error': dev.eclipse.org/svnroot/dsdp/org.eclipse.tm.tcf Till i download this and install this, i will not be able to do anything. I am using Eclipse 2.0 Blackberry sdk 7.0 Please help me

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• Rails accepts_nested_attributes_for callbacks

  - by Rabbott

  I have two models Ticket and TicketComment, the TicketComment is a child of Ticket. ticket.rb class Ticket < ActiveRecord::Base has_many :ticket_comments, :dependent => :destroy, :order => 'created_at DESC' # allow the ticket comments to be created from within a ticket form accepts_nested_attributes_for :ticket_comments, :reject_if => proc { |attributes| attributes['comment'].blank? } end ticket_comment.rb class TicketComment < ActiveRecord::Base belongs_to :ticket validates_presence_of :comment end What I want to do is mimic the functionality in Trac, where if a user makes a change to the ticket, and/or adds a comment, an email is sent to the people assigned to the ticket. I want to use an after_update or after_save callback, so that I know the information was all saved before I send out emails. How can I detect changes to the model (ticket.changes) as well as whether a new comment was created or not (ticket.comments) and send this update (x changes to y, user added comment 'text') in ONE email in a callback method?

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• Modify 3rd party code in subversion

  - by Alex

  I use a script for my homepage but I'd like to localize it. Furthermore the CSS uses images from a special folder which does not fit to my folder hierarchy. Because I don't want to adopt these paths and settings I'll have to modify the original sources. Currently my repository looks like this: /3rdParty /CompanyA /CompanyAProduct1 /v1_0 /v1_1 /MyProductA /branches /tags /trunk /import /export /source Via svn:externals I map all stuff I need (lib, dll, or code) into the import folder. Now I'd like to modify the files in the import folder but this will modify the original sources, too (as far as I know). What is the best solution to have the modified version in my import folder but the original sources remain unaffected? Should I make a branch of the 3rd party code? But then I have to update the original sources for every new release. Thanks!

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• lock file so that it cannot be deleted

  - by JoeCool

  I'm working with two independent c/c++ applications on Windows where one of them constantly updates an image on disk (from a webcam) and the other reads that image for processing. This works fine and dandy 99.99% of the time, but every once in a while the reader app is in the middle of reading the image when the writer deletes it to refresh it with a new one. The obvious solution to me seems to be to have the reader put some sort of a lock on the file so that the writer can see that it can't delete it and thus spin-lock on it until it can delete and update. Is there anyway to do this? Or is there another simple design pattern I can use to get the same sort of constant image refreshing between two programs? Thanks, -Robert

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• What Windows editor has CORRECT EOL whitespace handling?

  - by blueshift

  I'm looking for a Windows text editor for programming that handles EOL whitespace CORRECTLY, which for my idea of correct means: Strip all EOL whitespace on save, EXCEPT on lines that I haven't edited. This is to minimise the amount of EOL whitespace evil in my world, but not pollute SCM diff/blame with whitespace-only fixes (I have to deal with old / other people's code). I have played with TextPad, Notepad++, Kodomo Edit and Programmer's Notepad 2, and found all of them lacking. Also: I don't get along with vi, and I am unsure about Emacs on Windows. @Matti Virkkunen: I could mess with diff, but I want to fix the problem, not the symptoms. Fixing diff means all my, others, and server side diff tools need to be fixed, and doesn't fix space/noise/hash change issues in SCM. Example pet hate using that system: "update" tells me a file has changed. Diff shows no changes.

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• Clojure: Testing every value from map operation for truth

  - by Ralph

  How can I test that every value in the collection returned by map is true? I am using the following: (defn test [f coll] (every? #(identity %) (map f coll))) with the anonymous function #(identity %), but I was wondering if there is a better way. I cannot use (apply and ...) because and is a macro. UPDATE: BTW, I am making my way through The Haskell Road to Logic, Maths, and Programming, by Kees Doets and Jan can Eijck, but doing the exercises in Clojure. It's a very interesting book.

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• Trouble defining a variable in PHP?

  - by Jake

  Alright, so a content page uses this: $tab = "Friends"; $title = "User Profile"; include '(the header file, with nav)'; And the header page has the code: if ($tab == "Friends") { echo '<li id="current">'; } else { echo '<li>'; } The problem is, that the if $tab == Friends condition is never activated, and no other variables are carried from the the content page, to the header page. Does anyone know what I'm doing wrong? Update: Alright, the problem seemed to disappear when I used ../scripts/filename.php, and only occurred when I used a full URL? Any ideas why?

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• Scaffold default files are the best practice?

  - by antpaw

  Hey, i have some experience with MVC. but I'm new to rails. I'm using the scaffold command to generate some default files. The model looks clean and nice, but the controller and the views aren't really dry. The contents of new.html.erb and edit.html.erb are almost the same and the methods new/edit and create/update are doing almost the same thing. In other frameworks i've used only one view for updating and creating new entries and also the same method in my controller by setting the id as an optional parameter. Do they use this structure to keep things RESTful (i have not much of a clue about rest :()? Is it the best practice to use this default stuff for crud?

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• What is the best possible technology for pulling huge data from 4 remote servers

  - by Habib Ullah Bahar

  Hello, For one of our project, we need to pull huge real time stock data from 4 remote servers across two countries. The trivial process here, check the sources for a regular interval and save the update to database. But as these are real time stock data of more than 1000 companies, I have to pull every second, which isn't good in case of memory, bandwidth I think. Please give me suggestion on which technology/platform [We are flexible here. PHP, Python, Java, PERL - anyone of them will be OK for us] we should choose, it can be achieved easily and with better performance.

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• Shrink database after removing extra data

  - by Sergey Osypchuk

  We have a need to fit database in 4G in order to use ms sql express edition. I started from 7G database, and found a lot of not needed records, and deleted them. After Shrink database size is 4.6G, and 748MB is free (according to database properties). However, when i execute exec sp_spaceused i am having interesting results: DatabaseName Database_size unallocation space xxxxxx 4726.50 MB 765.42 MB Reserved Data index_size unused 3899472 KB 1608776 KB 1448400 KB 842296 KB Any ideas, how can i bite at least some of this unused space? Also I know table, which occupied it. update: is it worth to try to rebuild table indexes? ALTER INDEX ALL ON Production.Product REBUILD

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