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• MySQL: Copy a field to another table

  - by harpax

  I have a table posts that could look like this: id | title | body | created | .. ------------------------------------------- I would like to use the boolean search feature that is offered by a MyISAM Table, but the posts table is InnoDB. So I created another table 'post_contents' that looks like this: post_id | body -------------------- That table is already filled with some contents and I can use the boolean search. However, I need to move the title field in the post_contents table as well and then copy the existing title-data to the new field. I know about the INSERT .. SELECT syntax, but I don't seem to be able to create the correct query.

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• Weird mapping error in linq-to-sql dbml file in VS2010

  - by rwwilden

  Since I switched to VS2010, several times a day I get a compilation error in my dbml file: DBML1005: Mapping between DbType 'bigint' and Type 'MyNamespace.SecurityToken' in Column 'SecurityToken' of Type 'Employee' is not supported When I restart VS2010 the error disappears. I have no problems running my application using this dbml file (specifically, there are no problems getting correct values inside the SecurityToken property of Employee objects). The SecurityToken property is of an enum type defined as follows: [Flags] public enum SecurityToken : long { None = 1, Admin = 2, ...... } The SecurityToken column in the database is of type bigint. Am I missing something? It's especially weird that the error only happens sometimes, when I'm writing code that isn't related at all to the LINQ model.

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• Java webapp: where/how to automatically set each picture's width/height

  - by NoozNooz42

  For several reasons, a lot of "webmaster guides" (like Google and Yahoo!'s webmaster guides/guidelines) repeats several times that it is better to always put the width and height attribute of the img tag. One of the most obvious reason is that the elements in the page won't seem to be "jumping around" to a new location after every picture is loaded (always setting the correct width/height sure gets rid of this behavior). And there are other reasons to follow these guidelines / best practices. So: if we consider that these are indeed good practices if there are a lot of pictures and they are changing often if pictures aren't changing between two .war re-deploy (that is: there's no user-contributed picture) if we don't want to manually edit all these width/height attributes How do we automatically/programmatically serve HTML pages where every img tag have their width/height attribute correctly set as the best practice recommend?

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• jQuery Plugin Overwriting Parameters

  - by Travis

  Hey Everyone, This maybe a very mundane question, but this is the first jQuery plugin that I write and I'm a bit fuzzy on understanding the scope rules in Javascript. I'm trying to write an simple jQuery plugin that wraps around the Stack Overflow API. I'm starting off by trying to work with the Flair API. I wanted to make the plugin as configurable as possible so that you can easily pass it the domain and user id, and generate multiple Flairs. var superUser = $.jStackOverflow.flair({domain:"superuser.com", id: 30162, parentId:'#su-flair'}); var stackOverflow = $.jStackOverflow.flair({domain:"stackoverflow.com", id: 55954, parentId:'#so-flair'}); The problem is, when it makes the second call, its somehow using the correct domain and id parameters, but the parentId field that it's using in the callback function to create the html, is using the first parameter. You can see the plugin here and the html here

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• make desktop sms application using blackberry

  - by Amit Kumar Jha

  hey all, I have to make a SMS sending application in .NET, which uses the attached Blackberry handset(blackberry tour 9630 to be precise) to send SMS. I have never worked on smartphone application development, so want help in doing this. I searched SO for an answer and found one question, but its in java and i think that code would run on blackberry itself and not on desktop, correct me if i am wrong. So if someone could point me in the right direction I would be very grateful. Thanks in advance to all those who reply.

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• How to access stdClass variables stdClass Object([max(id)])=>64)

  - by Theopile

  I need the very last valid entry in a database table which would be the row with the greatest primary key. So using mysqli, my query is "SELECT MAX(id) FROM table LIMIT 1". This query returns the correct number(using print_r()) but I cannot figure out how to access it. Here is the main code. Note that the $this-link refers to class with a mysqli connection. $q="select max(id) from stones limit 1"; $qed=$this->link->query($q) or die(mysqli_error()); if($qed){ $row=$qed->fetch_object(); print_r($row); echo $lastid=$row;//here is the problem } The valid line print_r($row) echos out "stdClass Object ( [max(id)] = 68 )"

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• Javascript display property

  - by Nani

  In my form I have a textbox and a calendr along with other controls asp:TextBox ID="TextBox2" runat="server" onfocus="CalOpen()" asp:TextBox asp:Calendar ID="Calendar1" runat="server" style="display:none;" onselectionchanged="Calendar1_SelectionChanged" script type="text/javascript" function CalOpen() { var cal = document.getElementById('<%=Calendar1.ClientID%>'); cal.style.display='block'; } /script protected void Calendar1_SelectionChanged(object sender, EventArgs e) { TextBox2.Text = Calendar1.SelectedDate.ToLongDateString(); Calendar1.Visible = false; } protected void ImageButton1_Click(object sender, ImageClickEventArgs e) { Calendar1.Visible = true; } For the first time it worked fine, but, 2nd time when I click TextBox2, that is, after selecting date for the first time. Broeser is throwing error"object required" I am unable to know where I went wrong. Plz help me in making my code correct. Thank You.

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• SQL Server (2005) Linked Server Issue

  - by David.Chu.ca

  I have SQL Server 2005 with several linked server defined. One of them is a connection to an Oracle server and another one is an ODBC bridge to another server on a remote machine (ODBC server). Recently I tried to use the linked server to Oracle to update data with two large size tables by using several joints. The update query took too long time and finally there was exception thrown: Update O set value = l.value FROM OracleServer..schema.largesizeTable O Join localLargeSizeTable l on .... The problem is that after the exception, I realized that another linked server to ODBC was not working any more. I had to restart SQL server to get the ODBC linked server back. It looks that the linked server pool could be crashed if any of them failed(not like sandbox in Chrome for each tab and no impact on other tabs or Chrome application at all). I am not sure if my assumption is correct or not. Is this a known issue of SQL server 2005?

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• Ruby character encoding problems in netbeans and command wíndow

  - by salgo60

  I use netbeans as development IDE and runs the application from cmd but have problems to display ISO 8859-1 characters like åäö correct in both cmd window and when I run the application from netbeans Question: What is best practice to set it up Right now I do @output.puts indent + "V" + 132.chr + "lkommen till Ruby Camping!" to get ä My environment chcp 65001 Active code page: 65001 ruby main.rb Source encoding: <Encoding:US-ASCII> Default external: #<Encoding:UTF-8> Default internal: nil Locale charmap: "CP65001" where I have in the code def self.printEncoding puts "Source encoding: #{__ENCODING__.inspect}" if defined? __ENCODING__ if defined? Environment::Encoding puts "Default external: #{Encoding.default_external.inspect}" puts "Default internal: #{Encoding.default_internal.inspect}" puts "Locale charmap: #{ Encoding.locale_charmap.inspect}" end puts "LANG environment variable: #{ENV['LANG'].inspect}" unless ENV['LANG'].nil? end ruby -v ruby 1.9.1p378 (2010-01-10 revision 26273) [i386-mingw32]

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• HTTP Data chunks over multiple packets?

  - by myforwik

  What is the correct way for a HTTP server to send data over multiple packets? For example I want to transfer a file, the first packet I send is: HTTP/1.1 200 OK Content-type: application/force-download Content-Type: application/download Content-Type: application/octet-stream Content-Description: File Transfer Content-disposition: attachment; filename=test.dat Content-Transfer-Encoding: chunked 400 <first 1024 bytes here> 400 <next 1024 bytes here> 400 <next 1024 bytes here> Now I need to make a new packet, if I just send: 400 <next 1024 bytes here> All the clients close there connections on me and the files are cut short. What headers do I put in a second packet to continue on with the data stream?

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• Why do we (really) program to interfaces?

  - by Kyle Burns

  One of the earliest lessons I was taught in Enterprise development was "always program against an interface".  This was back in the VB6 days and I quickly learned that no code would be allowed to move to the QA server unless my business objects and data access objects each are defined as an interface and have a matching implementation class.  Why?  "It's more reusable" was one answer.  "It doesn't tie you to a specific implementation" a slightly more knowing answer.  And let's not forget the discussion ending "it's a standard".  The problem with these responses was that senior people didn't really understand the reason we were doing the things we were doing and because of that, we were entirely unable to realize the intent behind the practice - we simply used interfaces and had a bunch of extra code to maintain to show for it. It wasn't until a few years later that I finally heard the term "Inversion of Control".  Simply put, "Inversion of Control" takes the creation of objects that used to be within the control (and therefore a responsibility of) of your component and moves it to some outside force.  For example, consider the following code which follows the old "always program against an interface" rule in the manner of many corporate development shops: 1: ICatalog catalog = new Catalog(); 2: Category[] categories = catalog.GetCategories(); In this example, I met the requirement of the rule by declaring the variable as ICatalog, but I didn't hit "it doesn't tie you to a specific implementation" because I explicitly created an instance of the concrete Catalog object.  If I want to test the functionality of the code I just wrote I have to have an environment in which Catalog can be created along with any of the resources upon which it depends (e.g. configuration files, database connections, etc) in order to test my functionality.  That's a lot of setup work and one of the things that I think ultimately discourages real buy-in of unit testing in many development shops. So how do I test my code without needing Catalog to work?  A very primitive approach I've seen is to change the line the instantiates catalog to read: 1: ICatalog catalog = new FakeCatalog();   once the test is run and passes, the code is switched back to the real thing.  This obviously poses a huge risk for introducing test code into production and in my opinion is worse than just keeping the dependency and its associated setup work.  Another popular approach is to make use of Factory methods which use an object whose "job" is to know how to obtain a valid instance of the object.  Using this approach, the code may look something like this: 1: ICatalog catalog = CatalogFactory.GetCatalog();   The code inside the factory is responsible for deciding "what kind" of catalog is needed.  This is a far better approach than the previous one, but it does make projects grow considerably because now in addition to the interface, the real implementation, and the fake implementation(s) for testing you have added a minimum of one factory (or at least a factory method) for each of your interfaces.  Once again, developers say "that's too complicated and has me writing a bunch of useless code" and quietly slip back into just creating a new Catalog and chalking any test failures up to "it will probably work on the server". This is where software intended specifically to facilitate Inversion of Control comes into play.  There are many libraries that take on the Inversion of Control responsibilities in .Net and most of them have many pros and cons.  From this point forward I'll discuss concepts from the standpoint of the Unity framework produced by Microsoft's Patterns and Practices team.  I'm primarily focusing on this library because it questions about it inspired this posting. At Unity's core and that of most any IoC framework is a catalog or registry of components.  This registry can be configured either through code or using the application's configuration file and in the most simple terms says "interface X maps to concrete implementation Y".  It can get much more complicated, but I want to keep things at the "what does it do" level instead of "how does it do it".  The object that exposes most of the Unity functionality is the UnityContainer.  This object exposes methods to configure the catalog as well as the Resolve<T> method which is used to obtain an instance of the type represented by T.  When using the Resolve<T> method, Unity does not necessarily have to just "new up" the requested object, but also can track dependencies of that object and ensure that the entire dependency chain is satisfied. There are three basic ways that I have seen Unity used within projects.  Those are through classes directly using the Unity container, classes requiring injection of dependencies, and classes making use of the Service Locator pattern. The first usage of Unity is when classes are aware of the Unity container and directly call its Resolve method whenever they need the services advertised by an interface.  The up side of this approach is that IoC is utilized, but the down side is that every class has to be aware that Unity is being used and tied directly to that implementation. Many developers don't like the idea of as close a tie to specific IoC implementation as is represented by using Unity within all of your classes and for the most part I agree that this isn't a good idea.  As an alternative, classes can be designed for Dependency Injection.  Dependency Injection is where a force outside the class itself manipulates the object to provide implementations of the interfaces that the class needs to interact with the outside world.  This is typically done either through constructor injection where the object has a constructor that accepts an instance of each interface it requires or through property setters accepting the service providers.  When using dependency, I lean toward the use of constructor injection because I view the constructor as being a much better way to "discover" what is required for the instance to be ready for use.  During resolution, Unity looks for an injection constructor and will attempt to resolve instances of each interface required by the constructor, throwing an exception of unable to meet the advertised needs of the class.  The up side of this approach is that the needs of the class are very clearly advertised and the class is unaware of which IoC container (if any) is being used.  The down side of this approach is that you're required to maintain the objects passed to the constructor as instance variables throughout the life of your object and that objects which coordinate with many external services require a lot of additional constructor arguments (this gets ugly and may indicate a need for refactoring). The final way that I've seen and used Unity is to make use of the ServiceLocator pattern, of which the Patterns and Practices team has also provided a Unity-compatible implementation.  When using the ServiceLocator, your class calls ServiceLocator.Retrieve in places where it would have called Resolve on the Unity container.  Like using Unity directly, it does tie you directly to the ServiceLocator implementation and makes your code aware that dependency injection is taking place, but it does have the up side of giving you the freedom to swap out the underlying IoC container if necessary.  I'm not hugely concerned with hiding IoC entirely from the class (I view this as a "nice to have"), so the single biggest problem that I see with the ServiceLocator approach is that it provides no way to proactively advertise needs in the way that constructor injection does, allowing more opportunity for difficult to track runtime errors. This blog entry has not been intended in any way to be a definitive work on IoC, but rather as something to spur thought about why we program to interfaces and some ways to reach the intended value of the practice instead of having it just complicate your code.  I hope that it helps somebody begin or continue a journey away from being a "Cargo Cult Programmer".

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• How to query a date in HQL (Hibernate) with Joda Time?

  - by fabien7474

  I am sure that someone familiar with HQL (I am myself a newbie) can easily answer this question. In my Grails application, I have the following domain class. class Book { org.joda.time.DateTime releaseDate //I use the PersistentDateTime for persisting via Hibernate (that use a DATETIME type for MySQL DB) } In my HQL query, I want to retrieve books whose release date is included in range date1..date2 For instance I tried: DateTime date1, date2 ... def queryStr = "select * from Book as b where b.releaseDate > $date1 and b.releaseDate < $date2" def res = Book.executeQuery(queryStr) But I got the exception ...caused by: org.springframework.orm.hibernate3.HibernateQueryException: unexpected token: The error token points to date format (for instance 2009-11-27T21:57:18.010+01:00 or Fri Nov 27 22:01:20 CET 2009) I have also tried to convert date1 into a Date class without success So what is the correct HQL code ? Should I convert to a specific format (which one?) using the patternForStyle method or is there another -cleaner- way to do it? Thanks, Fabien.

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• PHP & MySQL username submit problem

  - by peakUC

  I want to allow users to either have there username field empty at any time but I get the username error message Your username is unavailable! how can I correct this problem? Here is the PHP code. if(isset($_POST['username'])) { $u = "SELECT * FROM users WHERE username = '$username' AND user_id <> '$user_id'"; $r = mysqli_query ($mysqli, $u) or trigger_error("Query: $q\n<br />MySQL Error: " . mysqli_error($mysqli)); if (mysqli_num_rows($r) == TRUE) { // Unavailable. echo '<p class="error">Your username is unavailable!</p>'; $username = NULL; } else if(mysqli_num_rows($r) == 0) { // Available. $username = mysqli_real_escape_string($mysqli, $purifier->purify(htmlentities(strip_tags($_POST['username'])))); } }

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• Mail merge from Java

  - by Mike Q

  Hi all, Does anyone have any experience with doing mail merge from Java on a word document? I need to support both doc and docx formats. I have heard of Apache POI and docx4j. However, from reading around I'm sure how good the word support is in POI. docx4j only supports docx format as far as I can see. Can any suggest either one of the above (and correct my knowledge on support) or another appropriate library. If necessary I would be willing to use one lib for doc and another for docx. Thanks.

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• Need a formula for calculating the tax portion of a total amount.

  - by pawz

  In Australia we have to advertise products with tax already added, so rather than say a product is $10 + $1 GST = $11, we normally work backwards and say "ok, total is $10, how much of that is GST ?" For example, for a $10 total, you do 10 * (1 /11) = 0.91, which is the tax component of the $10 total. My problem is I need calculate a formula for working out the taxable component when the tax rate is a variable. So far I've made this calculation although I'm not sure how correct an assertion it is: 10 * (1 / x) = 0.09 * (1 / y) where y = 10, x = 11 Basically i want to work out x on the left hand side when I know that the tax rate is 0.05 for example, which will give me a formula that I can use to calculate the taxable component of an total figure. I want a function into which I can plug in the total price and the tax rate, and get back the taxable component of the total price. I'd really appreciate the help with this as it really makes my head hurt ! :")

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• Password authentication in sqlite3 for iphone

  - by user271753

  Hey Guys .. I am new to programming in Objective C . I checked many tutorials on reading data in sqlite3 , but almost all of them have show the data in UITableView . I have a page where the user types in the password, the password lets say 1234 is saved in the database ( I have created a table already ) . I have got the database into the project folder . I just want a statement like if(databasepassword == correct from the uitextfield ) { show next page } else { password is incorrect.text } I will figure out on how to show the next page and display the password is incorrect.text I just want a method to cross check with the password saved in the database . How can I do that ? Regards

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• What Belongs to the Aggregate Root

  - by jlembke

  This is a practical Domain Driven Design question: Conceptually, I think I get Aggregate roots until I go to define one. I have an Employee entity, which has surfaced as an Aggregate root. In the Business, some employees can have work-related Violations logged against them: Employee-----*Violations Since not all Employees are subject to this, I would think that Violations would not be a part of the Employee Aggregate, correct? So when I want to work with Employees and their related violations, is this two separate Repository interactions by some Service? Lastly, when I add a Violation, is that method on the Employee Entity? Thanks for the help!

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• Image gallery control for ASP.Net with filtering capabilities

  - by ks78

  I'm writing an ASP.Net application which needs to display a large number of thumbnails, preferably in a paginated format. These thumbnails will be stored on the server's hard disk, but will have their filenames listed in a SQL Server database. What I want to do is to be able to filter the images being displayed based on criteria within the database. I've looked at the NotesForGallery control, which I really like, but it doesn't seem to have a way to do that. --if I'm wrong, please correct me. Are there any other image gallery type controls, preferably free, that can do what I need? I'm hoping someone can recommend a control or solution that will point me in the right direction. Thanks in advance.

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• difference between a lexical, morphological and semantic mistakes?

  - by AnH

  Hi there, I just want to make sure that I understood the differences between a lexical, morphological and semantic mistakes correctly. If am not mistaken semantic mistakes deal with problems concerning meanings, for example writing a sentence that is correct grammar wise but doesn't make any sense is a semantic mistake, morphological mistakes deals more or less on how the word should look like, for example childrenS is a morphological mistake, so that leaves lexical mistakes, what are those exactly?? can someone sum up the differences between those 3 mistakes please so that I may know for sure that I got them down correctly? Thank you in advance

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• Posting a jaiku using xcode

  - by frameworkguy

  NSMutableURLRequest *jaikuRequest=[NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://api.jaiku.com/json"] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0]; [jaikuRequest setHTTPMethod:@"POST"]; NSString *jbody= [NSString stringWithFormat:@"method=presence.send&user=XXusernameXX&personal_key=XXpersonalkeyXX&message=%@", encodedMsg]; [jaikuRequest setHTTPBody:[[NSString stringWithFormat:jbody] dataUsingEncoding:NSASCIIStringEncoding]]; I wrote the above code snippet to be able to post a jaiku on jaiku.com. I've come across similar samples in other languages for posting a jaiku. However i get the following response in the console: {"status": "error", "message": "Invalid API user", "code": 0} what could be the error or if im wrong, what is the correct approach to posting a jaiku using xcode?

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• Zend + Pop Up's balloons on Server Problem

  - by LookUp Webmaster

  Dear Friends from Stackoverflow, Please help me with a problem that i'm having when uploading my project to the server. I'm using pop up's balloons (http://mckay.cshl.edu/balloons.html) for a project using Zend FW and it works fine on my localhost. (I'm using MAMP on MacOSX) but when I upload the webpage to the server, the text inside the balloons is displayed but the images that form the balloon are not, so somehow the js does not recognize the url to the images (the path it's correct, i've checked several times). The server is an Ubuntu 9.04 virtual machine from rackspace.com, running a LAMP server. I'm using the REWRITE function in Apache, so i guess maybe that's the problem. The rewrite configuration is set up using a .htaccess file with the following content: SetEnv APPLICATION_ENV development Options +FollowSymlinks RewriteEngine ON RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule !.(js|ico|txt|gif|jpg|png|css|html)$ index.php Does anyone knows what the problem might be? Best Regards,

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• Simple Android OpenGL App Lag

  - by Eugene

  Hi, I have an Android OpenGL application which simply draws 2D squares (using 2 triangles) and animates them moving down the screen. I essentially do this by running: glLoadIdentity(), then glTranslatef, and finally glDrawElements all in a for loop. (The for loop is to draw all 10 blocks on the screen for every frame). In every drawFrame, the y-position of the blocks increments for the animation. The problem I'm having is strange. I run the application and the animation is laggy and not smooth. Then I re-run the application and I get a smooth animation. If I run again, I may get a smooth animation, or possibly not. Is my method correct, or is there a better way of doing this animation? Thanks for the help!

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• difference in logging mechanism: API and application(python)

  - by zubin71

  I am currently writing an API and an application which uses the API. I have gotten suggestions from people stating that I should perform logging using handlers in the application and use a "logger" object for logging from the API. In light of the advice I received above, is the following implementation correct? class test: def __init__(self, verbose): self.logger = logging.getLogger("test") self.logger.setLevel(verbose) def do_something(self): # do something self.logger.log("something") # by doing this i get the error message "No handlers could be found for logger "test" The implementation i had in mind was as follows: #!/usr/bin/python """ .... .... create a logger with a handler .... .... """ myobject = test() try: myobject.do_something() except SomeError: logger.log("cant do something") Id like to get my basics strong, id be grateful for any help and suggestions for code you might recommend I look up. Thnkx!

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• IIS7 - Specifying content-length header in ASP causes "connection reset" error

  - by MisterZimbu

  I'm migrating a series of websites from an existing IIS5 server to a brand new IIS7 web server. One of the pages pulls a data file from a blob in the database and serves it to the end user: Response.ContentType = rs("contentType") Response.AddHeader "Content-Disposition", "attachment;filename=" & Trim(rs("docName"))&rs("suffix")' let the browser know the file name Response.AddHeader "Content-Length", cstr(rs("docsize"))' let the browser know the file size Testing this in the new IIS7 install, I get a "Connection Reset" error in both Internet Explorer and Firefox. The document is served up correctly if the Content-Length header is removed (but then the user won't get a useful progress bar). Any ideas on how to correct this; whether it be a server configuration option or via code? Thanks.

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• IntelliJ IDEA :: Deploy android application onto Samsung S5300

  - by jdevelop

  I'm trying to deploy the app onto my phone (Samsung S5300) I created project in IDEA and it works well in Android emulator. Now I want to deploy it onto my phone. I did the following: plugged USB enabled development mode and checked all options (USB, location etc) on the phone launched the same configuration but specified the device from the plugged devide (choose a running device) nothing happened, I don't see any errors neither in IDEA, not on the phone. What am I missing and how to fix the problem? The API SDK seems to be correct (2.3)

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