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  • Advice Please: SQL Server Identity vs Unique Identifier keys when using Entity Framework

    - by c.batt
    I'm in the process of designing a fairly complex system. One of our primary concerns is supporting SQL Server peer-to-peer replication. The idea is to support several geographically separated nodes. A secondary concern has been using a modern ORM in the middle tier. Our first choice has always been Entity Framework, mainly because the developers like to work with it. (They love the LiNQ support.) So here's the problem: With peer-to-peer replication in mind, I settled on using uniqueidentifier with a default value of newsequentialid() for the primary key of every table. This seemed to provide a good balance between avoiding key collisions and reducing index fragmentation. However, it turns out that the current version of Entity Framework has a very strange limitation: if an entity's key column is a uniqueidentifier (GUID) then it cannot be configured to use the default value (newsequentialid()) provided by the database. The application layer must generate the GUID and populate the key value. So here's the debate: abandon Entity Framework and use another ORM: use NHibernate and give up LiNQ support use linq2sql and give up future support (not to mention get bound to SQL Server on DB) abandon GUIDs and go with another PK strategy devise a method to generate sequential GUIDs (COMBs?) at the application layer I'm leaning towards option 1 with linq2sql (my developers really like linq2[stuff]) and 3. That's mainly because I'm somewhat ignorant of alternate key strategies that support the replication scheme we're aiming for while also keeping things sane from a developer's perspective. Any insight or opinion would be greatly appreciated.

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  • How to query MySQL for exact length and exact UTF-8 characters

    - by oskarae
    I have table with words dictionary in my language (latvian). CREATE TABLE words ( value varchar(255) COLLATE utf8_unicode_ci DEFAULT NULL ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci; And let's say it has 3 words inside: INSERT INTO words (value) VALUES ('teja'); INSERT INTO words (value) VALUES ('vejš'); INSERT INTO words (value) VALUES ('feja'); What I want to do is I want to find all words that is exactly 4 characters long and where second character is 'e' and third character is 'j' For me it feels that correct query would be: SELECT * FROM words WHERE value LIKE '_ej_'; But problem with this query is that it returs not 2 entries ('teja','vejš') but all three. As I understand it is because internally MySQL converts strings to some ASCII representation? Then there is BINARY addition possible for LIKE SELECT * FROM words WHERE value LIKE BINARY '_ej_'; But this also does not return 2 entries ('teja','vejš') but only one ('teja'). I believe this has something to do with UTF-8 2 bytes for non ASCII chars? So question: What MySQL query would return my exact two words ('teja','vejš')? Thank you in advance

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  • How could i use two background images in one page

    - by Mayur
    Hi All I have a one problem, I have one background image having 1000px height. which i used in body of css having fixed height but on some pages my content height goes incresed more than background image its not look good, so i searched on google and i got a way to solve this issue, then iused a height in body tag, and then i used a slice of bg-below of width="960px" which i used in html tag it works fine in all browser except Internet explorer plese tell me what to do how can i resolve this problem. Thanks Mayur

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  • [PERL Tk] printing Line number in Text widget

    - by ungalnanban
    I use the following code for printing the line number in Text widget. my $c=0; my $r=0; $txt = $mw-Text( -background ='white', -width=>400, -height=>300, -selectbackground => 'skyblue', -insertwidth => 5, -borderwidth =>3, -highlightcolor => 'blue', ### after visit -highlightbackground => 'red' , ### default before visit -xscrollcommand => sub { print"CHAT NO :",$c++; }, # Determines the callback used when the Text widget is scrolled horizontally. -yscrollcommand = sub { print"LINR NO:",$r++; }, # Determines the callback used when the Text widget is scrolled vertically. -padx = 5, -pady = 5, )- pack (); the above code is printing the line number and character no is ok. but I used in Scrolled widget that output is not printing. what is the problem in the following code how can I solve this? $txt = $mw-Scrolled('Text', -scrollbars = 'se', -background ='white', -width=>400, -height=>300, -insertwidth => 5, -borderwidth =>3, -highlightcolor => 'blue', ### after visit -highlightbackground => 'red' , ### default before visit -padx => 5, -pady => 5, -xscrollcommand => sub { print"CHAT NO :",$c++; }, # Determines the callback used when the Text widget is scrolled horizontally. -yscrollcommand => sub { print"LINR NO :",$r++; }, # Determines the callback used when the Text widget is scrolled vertically. )->pack();

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  • Rails redirections with new users and logins

    - by Kenji Crosland
    So I'm trying to get the user to return to the page they were looking at before they click "log in" This is what I got in my user application controller: def redirect_back_or_default(default) redirect_to(session[:return_to] || default) session[:return_to] = nil end And this is what I have in my sessions controller: def new @user_session = UserSession.new session[:return_to] = request.referer end end def create @user_session = UserSession.new(params[:user_session]) if @user_session.save flash[:notice] = "Login successful!" redirect_back_or_default(home_path) else render :action => :new end end This works fine most of the time but if a user logs in right after they register to the site, they will get redirected to a blank page. I imagine this is the "create" action because it was the last action before going to user sessions new. So I tried this: def new @user_session = UserSession.new unless request.referer == join_path session[:return_to] = request.referer end end And this tries to take me back to the login page after I log in. What I'd really like to do is have the user see their profile when they log in for the very first time. This wouldn't give me a user id and raised a routing error def create @user_session = UserSession.new(params[:user_session]) if @user_session.save flash[:notice] = "Login successful!" redirect_back_or_default(user_path(current_user)) else render :action => :new end end Anybody gone through these redirecting acrobatics before? I can't seem to get it to work. I'm using authlogic if that helps.

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  • How to convert different local float format to standard float format, using zend?

    - by Linto davis
    my local is 'en_IN' (ie Zend_Registry::get('Zend_Locale')) I have to convert the local value to standard float number format for example 1,235.23 = 1235.23 3.23 = 3.23 I have used the following code Zend_Locale_Format::getFloat($value, array('locale' = Zend_Registry::get('Zend_Locale'))); it working fine for 1,235.23, and i get the answer 1235.23. But when i give 3.23 , i get the error on this code And the error shown as 'No localized value in 3.23 found', This issue is happening in the browser opera, when we set the language is English(IN)(en-IN)

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  • How can I have a web link perform an action in a specific desktop application?

    - by John
    The specific situation is I have a .zip file that I want to open with a certain application. However, I don't want all ZIP files associated with that application. I think the answer is that instead of saying, "download this zip file, and open it with application X" I could have the browser basically go well my desktop application to go fetch it on its own (the same way directives like itunes: mailto: or aim: do things like launch the itunes store, add buddies, etc). Thoughts?

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  • Navigation and WebBrowser control

    - by Neir0
    Hi, Can i use XPAth expressions to navigate through DOM elements in WebBrowser control? May be attaching javascript code and use document.evaluate function is right way? Can another activeX browser component(firefox,webkit.net) help me to solve my task?

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  • how to center jquery dialog with ui 1.8?

    - by Jeremy
    I'm having trouble getting the jquery ui 1.8 dialog to center I've tried leaving the options default, and setting position: 'center'. When the dialog displayed, the browser window gets scrolled down to the centre of the page, and the dialog is positioned at the bottom left of the window. This worked fine with jquery 1.3.2 and ui 1.7.2. Is there something new I need to do with this version?

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  • Wait Cursor Error

    - by felixd68
    I'm coding an advanced web browser. The bad thing is, is that whenever you move your cursor over the window, a wait cursor is displayed. I tried to deselect the wait cursor but it doesn't work! I'm using Visual Basic 2010 Beta 2... Please help!!

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  • Empty white space between the 2 images

    - by Shivanand
    I have placed 2 images side by side in a div besides input box "Search by Contact". In the browser I find there is a gap between the 2nd image(Button T) and the one on its left. I am unable to remove the gap. Any help is highly appreciated. Here is the link to the html page: Space between button T and the one on its left.

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  • automaticaly place downloaded files in folder bsed on downloads extention sufix

    - by Bart van Tuÿl
    I’m making a simple web browser for work eeh, what I’d like to know is if its possible to save a file of a particular extension to a particular file. I currently use googels chrome when downloading a file it places this (regardless of extension) in a downloads folder without asking where I ant to download this too. I want to achieve the same except that downloads with the extension .dwg are placed automatically in a folder named DWG DOWNLAODS… Dose anybody know how to achieve this in vb.net?

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  • Web History: Early examples of collapsing and expanding content in an essay

    - by jes5199
    I vaguely remember that in the early days of the browser, one notion of what hypertext could be used for was a "zoom in" detail for academic essays: if you wanted a brief overview, you'd take the outermost level, and if you wanted to delve, you would click something and more sentences would appear. I know this sounds trivial and now, but in the mid-1990s it was thought-provoking. Has anyone seen any web fossils like this lying around, ideally still live on the web somewhere?

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  • Rewrite document.location without loading

    - by Miro
    I am developing a system which is 100% ajax, except of course, the first request. I am interested in changing the address in document.location, using javascript. But I don't want the browser to load the page on that "new" location. Does anyone know how I can do this? miro

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  • Multiple login locations for an online app.

    - by Goro
    Hello, I am working on a browser based application that will have many users. The catch is that every user should have their own customized login page, but the actual application is the same for everyone, and needs to be in a central location. What is the most secure way of doing this? Would it make more sense to have a copy of the application for each user, and keep the database centralized? The projected number of users is not very high, probably around 20-80. Thank you,

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  • ASP.NET - What happens when a HttpCookie expiration has been crossed

    - by user70192
    Hello, I am creating some cookies in my ASP.NET application. These cookies expire 10 minutes after they have been created. I follow the approach described on MSDN as shown here: http://msdn.microsoft.com/en-us/library/system.web.httpcookie.expires.aspx My question is, when a cookie "expires", what happens? Does the browser automatically delete the cookie? Is it our responsibility as developers to remove the cookies if they exist and have expired? Thank you,

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  • jQuery - addClass or removeClass - Is there an append class?

    - by iamtheratio
    I have css hover over images for my tabs and I'm trying to get the class to change from .how to .how_on when I click on the image HOW. My tabs are HOW | WHAT | WHEN | WHO | WHY I have classes for each (.how, .how_on), (.what, .what_on), etc... Can I make jQuery add _on to the original class name using click(function(){}); ? HTML: <div id="tab_container"> <ul class="tabs"> <li><a class="how_on" href="#how">How</a></li> <li><a class="why" href="#why">Why</a></li> <li><a class="what" href="#what">What</a></li> <li><a class="who" href="#who">Who</a></li> <li><a class="when" href="#when">When</a></li> </ul> <p><img src="images/tab_top.jpg" width="864px" height="6px" alt="" border="0" /></p> </div> <div class="tab_body"> <!-- HOW --> <div id="how" class="tab"> <strong>HOW IT WORKS:</strong> </div> JQUERY: <script type="text/javascript"> jQuery(document).ready(function(){ //if this is not the first tab, hide it jQuery(".tab:not(:first)").hide(); //to fix u know who jQuery(".tab:first").show(); //when we click one of the tabs jQuery(".tabs a").click(function(){ //get the ID of the element we need to show stringref = jQuery(this).attr("href").split('#')[1]; // adjust css on tabs to show active tab //hide the tabs that doesn't match the ID jQuery('.tab:not(#'+stringref+')').hide(); //fix if (jQuery.browser.msie && jQuery.browser.version.substr(0,3) == "6.0") { jQuery('.tab#' + stringref).show(); } else //display our tab fading it in jQuery('.tab#' + stringref).fadeIn(); //stay with me return false; }); }); </script>

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  • How to "enable" HTML5 elements in IE that were inserted by AJAX call?

    - by Gidon
    IE does not work good with unknown elements (ie. HTML5 elements), one cannot style them , or access most of their props. Their are numerous work arounds for this for example: http://remysharp.com/2009/01/07/html5-enabling-script/ The problem is that this works great for static HTML that was available on page load, but when one creates HTML5 elements afterward (for example AJAX call containing them, or simply creating with JS), it will mark these newly added elements them as HTMLUnknownElement as supposed to HTMLGenericElement (in IE debugger). Does anybody know a work around for that, so that newly added elements will be recognized/enabled by IE? Here is a test page: <html><head><title>TIME TEST</title> <!--[if IE]> <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script> <![endif]--> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script> </head> <body> <time>some time</time> <hr> <script type="text/javascript"> $("time").text("WORKS GREAT"); $("body").append("<time>NEW ELEMENT</time>"); //simulates AJAX callback insertion $("time").text("UPDATE"); </script> </body> </html> In IE you will see the: UPDATE , and NEW ELEMENT. In any other modern browser you will see UPDATE, and UPDATE Solution Using the answer provided I came up with the following piece of javascript to HTML5 enable a whole bunch of elements returned by my ajax call: (function ($) { jQuery.fn.html5Enable = function () { if ($.browser.msie) { $("abbr, article, aside, audio, canvas, details, figcaption, figure, footer, header, hgroup, mark, menu, meter, nav, output, progress, section, summary, time, video", this).replaceWith(function () { if (this.tagName == undefined) return ""; var el = $(document.createElement(this.tagName)); for (var i = 0; i < this.attributes.length; i++) el.attr(this.attributes[i].nodeName, this.attributes[i].nodeValue); el.html(this.innerHtml); return el; }); } return this; }; })(jQuery); Now this can be called whenever you want to append something: var el = $(AJAX_RESULT_OR_HTML_STRING); el.html5Enable(); $("SOMECONTAINER").append(el); See http://code.google.com/p/html5shiv/issues/detail?id=4 for an explanation about what this plugin doesn't do.

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  • XHTML 1.0 Strict, is there a tool that can refactor HTML?

    - by GenEric35
    I have a Asp.net web application running with the following config setting. <xhtmlConformance mode="Legacy"/> This limits use of AJAX and compatibility with multiple browser. If my understanding is correct, the HTML code of the aspx pages need to be fixed to comply with XHTML 1.0 Strict. There are alot of HTML pages, ~1000, is there a tool that could speed up this process?

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  • Displaying an image from the tmp directory

    - by Roland
    I have the following. A website that create temporarily images in the /tmp folder on the Linux server. The reason why I store it within this folder is since these images need to be cleared once in a while and it's so much easier just to clear the tmp directory using tmpwatch. Now my issue is to display the image within my browser? Code <img src="/tmp/3d34636.png" alt="image" /> I'm running Centos with PHP

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