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  • Autoincrementing hierarchical IDs on SQL Server

    - by Ville Koskinen
    Consider this table on SQL Server wordID aliasID value =========================== 0 0 'cat' 1 0 'dog' 2 0 'argh' 2 1 'ugh' WordID is a id of a word which possibly has aliases. AliasID determines a specific alias to a word. So above 'argh' and 'ugh' are aliases to each other. I'd like to be able to insert new words which do not have any aliases in the table without having to query the table for a free wordID value first. Inserting value 'hey' without specifying a wordID or an aliasID, a row looking like this would be created: wordID aliasID value =========================== 3 0 'hey' Is this possible and how?

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  • SQL Query slow in .NET application but instantaneous in SQL Server Management Studio

    - by user203882
    Here is the SQL SELECT tal.TrustAccountValue FROM TrustAccountLog AS tal INNER JOIN TrustAccount ta ON ta.TrustAccountID = tal.TrustAccountID INNER JOIN Users usr ON usr.UserID = ta.UserID WHERE usr.UserID = 70402 AND ta.TrustAccountID = 117249 AND tal.trustaccountlogid = ( SELECT MAX (tal.trustaccountlogid) FROM TrustAccountLog AS tal INNER JOIN TrustAccount ta ON ta.TrustAccountID = tal.TrustAccountID INNER JOIN Users usr ON usr.UserID = ta.UserID WHERE usr.UserID = 70402 AND ta.TrustAccountID = 117249 AND tal.TrustAccountLogDate < '3/1/2010 12:00:00 AM' ) Basicaly there is a Users table a TrustAccount table and a TrustAccountLog table. Users: Contains users and their details TrustAccount: A User can have multiple TrustAccounts. TrustAccountLog: Contains an audit of all TrustAccount "movements". A TrustAccount is associated with multiple TrustAccountLog entries. Now this query executes in milliseconds inside SQL Server Management Studio, but for some strange reason it takes forever in my C# app and even timesout (120s) sometimes. Here is the code in a nutshell. It gets called multiple times in a loop and the statement gets prepared. cmd.CommandTimeout = Configuration.DBTimeout; cmd.CommandText = "SELECT tal.TrustAccountValue FROM TrustAccountLog AS tal INNER JOIN TrustAccount ta ON ta.TrustAccountID = tal.TrustAccountID INNER JOIN Users usr ON usr.UserID = ta.UserID WHERE usr.UserID = @UserID1 AND ta.TrustAccountID = @TrustAccountID1 AND tal.trustaccountlogid = (SELECT MAX (tal.trustaccountlogid) FROM TrustAccountLog AS tal INNER JOIN TrustAccount ta ON ta.TrustAccountID = tal.TrustAccountID INNER JOIN Users usr ON usr.UserID = ta.UserID WHERE usr.UserID = @UserID2 AND ta.TrustAccountID = @TrustAccountID2 AND tal.TrustAccountLogDate < @TrustAccountLogDate2 ))"; cmd.Parameters.Add("@TrustAccountID1", SqlDbType.Int).Value = trustAccountId; cmd.Parameters.Add("@UserID1", SqlDbType.Int).Value = userId; cmd.Parameters.Add("@TrustAccountID2", SqlDbType.Int).Value = trustAccountId; cmd.Parameters.Add("@UserID2", SqlDbType.Int).Value = userId; cmd.Parameters.Add("@TrustAccountLogDate2", SqlDbType.DateTime).Value =TrustAccountLogDate; // And then... reader = cmd.ExecuteReader(); if (reader.Read()) { double value = (double)reader.GetValue(0); if (System.Double.IsNaN(value)) return 0; else return value; } else return 0;

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  • Connecting to a SQL Server Compact Edition (.sdf) from an MFC application

    - by Hazerd
    Hey ! I'm building an MFC app in Visual Studio 2008 which classifies textures and I need some sort of lightweight database to hold the characteristics (just some doubles and strings) which can be: -carried around with the app on different computers; -be able to perform queries on it from the app (searches , updates ,inserts ,etc); Currently I'm looking into SQL compact edition because it was very easy to create from Visual Studio ( I also need only one table) but I having a hard time connecting and updating the db from C++. This is what I've found on msdn regarding C++ and SQLCE: public: void createSqlCeConnection(){ SqlCeConnection* myConnection = new SqlCeConnection(); myConnection->ConnectionString = "DataSource = blabla.sdf"; MessageBox::Show(String::Format( S"Connection State: {0}", __box(myConnection->State))); } Unfortunately my experience with .net apps is pretty limited. Hopefully you bright minds could tell me if I'm on the right path and what links and includes should I add for this to work with an C++ MFC projects. Thanks !

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  • WPF ListBox/View Data Binding weird result

    - by Aviatrix
    I have this problem when i try to synchronize a observable list with listbox/view it displays the first item X times (x total amount of records in the list) but it doesn't change the variable's here is the XAML <ListBox x:Name="PostListView" BorderThickness="0" MinHeight="300" Background="{x:Null}" BorderBrush="{x:Null}" Foreground="{x:Null}" VerticalContentAlignment="Top" ScrollViewer.HorizontalScrollBarVisibility="Disabled" ScrollViewer.VerticalScrollBarVisibility="Disabled" DataContext="{Binding Source={StaticResource PostListData}}" ItemsSource="{Binding Mode=OneWay}" IsSynchronizedWithCurrentItem="True" MinWidth="332" SelectedIndex="0" SelectionMode="Extended" AlternationCount="1"> <ListBox.ItemTemplate> <DataTemplate> <DockPanel x:Name="SinglePost" VerticalAlignment="Top" ScrollViewer.CanContentScroll="True" ClipToBounds="True" Width="333" Height="70" d:LayoutOverrides="VerticalAlignment" d:IsEffectDisabled="True"> <DockPanel.DataContext> <local:PostList/> </DockPanel.DataContext> <StackPanel x:Name="AvatarNickHolder" Width="60"> <Label x:Name="Nick" HorizontalAlignment="Center" Margin="5,0" VerticalAlignment="Top" Height="15" Content="{Binding Path=pUsername, FallbackValue=pUsername}" FontFamily="Arial" FontSize="10.667" Padding="5,0"/> <Image x:Name="Avatar" HorizontalAlignment="Center" Margin="5,0,5,5" VerticalAlignment="Top" Width="50" Height="50" IsHitTestVisible="False" Source="1045443356IMG_0972.jpg" Stretch="UniformToFill"/> </StackPanel> <TextBlock x:Name="userPostText" Margin="0,0,5,0" VerticalAlignment="Center" FontSize="10.667" Text="{Binding Path=pMsg, FallbackValue=pMsg}" TextWrapping="Wrap"/> </DockPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> and here is the ovservable list class public class PostList : ObservableCollection<PostData> { public PostList() : base() { Add(new PostData("this is test msg", "Cather", "1045443356IMG_0972.jpg")); Add(new PostData("this is test msg1", "t1", "1045443356IMG_0972.jpg")); Add(new PostData("this is test msg2", "t2", "1045443356IMG_0972.jpg")); Add(new PostData("this is test msg3", "t3", "1045443356IMG_0972.jpg")); Add(new PostData("this is test msg4", "t4", "1045443356IMG_0972.jpg")); Add(new PostData("this is test msg5", "t5", "1045443356IMG_0972.jpg")); // Add(new PostData("Isak", "Dinesen")); // Add(new PostData("Victor", "Hugo")); // Add(new PostData("Jules", "Verne")); } } public class PostData { private string Username; private string Msg; private string Avatar; private string LinkAttached; private string PicAttached; private string VideoAttached; public PostData(string msg ,string username, string avatar=null, string link=null,string pic=null ,string video=null) { this.Username = username; this.Msg = msg; this.Avatar = avatar; this.LinkAttached = link; this.PicAttached = pic; this.VideoAttached = video; } public string pMsg { get { return Msg; } set { Msg = value; } } public string pUsername { get { return Username; } set { Username = value; } } public string pAvatar { get { return Avatar; } set { Avatar = value; } } public string pLink { get { return LinkAttached; } set { LinkAttached = value; } } public string pPic { get { return PicAttached; } set { PicAttached = value; } } public string pVideo { get { return VideoAttached; } set { VideoAttached = value; } } } Any ideas ?

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  • best method to update the SQL table data from c# .NET 2005

    - by Jebli
    Hi , I have a dataset with some 30 records in it. I want to update it to the database tables. which is the best method to update the table. I am unable to use dataadapter.update() since i am using a procedure to populate the dataset. is there any efficient way to update other than iterating through EACH record and updating it Please help. Thanks.

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  • Effects of changing a node in a binary tree

    - by eSKay
    Suppose I want to change the orange node in the following tree. So, the only other change I'll need to make is in the left pointer of the green node. The blue node will remain the same. Am I wrong somewhere? Because according to this article (that explains zippers), even the blue node needs to be changed. Similarly, in this picture (recolored) from the same article, why do we change the orange nodes at all (when we change x)?

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  • Using a checkbox input on a form to send the form data to different email addresses

    - by Cody Thomas
    I am building a form for a client. Here is the rundown. The form will be used as a request to have a staff member contact the person filling out the form. However, there is a list of staff members that will contact them depending on what the subject matter is. So, I want to create a checkbox input section on the form with each staff person's email address attached to a corresponding checkbox. So, the person filling out the form can check only the staff people necessary for their needs. Finally, when the person clicks "submit", the form will be emailed to only the staff members who were checked in the form. I'm at a loss of how to set this up.

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  • Heroku and Refinerycms: Application failed to start ~ attachment_fu problem

    - by John Deely
    Ok so I'm trying to get Refinerycms working with Heroku, and I'm new at all of this. I've set up an amazon s3 account and added keys and ids to the amazon_s3.yml files. When launched on Heroku at gart.heroku.com I get the following error: App failed to start /disk1/home/slugs/141557_e8490b3_d5eb/mnt/vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu/backends/s3_backend.rb:187:in read': No such file or directory - /disk1/home/slugs/141557_e8490b3_d5eb/mnt/config/amazon_s3.yml (Errno::ENOENT) from /disk1/home/slugs/141557_e8490b3_d5eb/mnt/vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu/backends/s3_backend.rb:187:inincluded' from /disk1/home/slugs/141557_e8490b3_d5eb/mnt/vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu.rb:123:in include' from /disk1/home/slugs/141557_e8490b3_d5eb/mnt/vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu.rb:123:inhas_attachment' from /disk1/home/slugs/141557_e8490b3_d5eb/mnt/app/models/image.rb:13 from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in gem_original_require' from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:inrequire' from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:158:in require' from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:265:inrequire_or_load' ... 42 levels... from /usr/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/builder.rb:29:in instance_eval' from /usr/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/builder.rb:29:ininitialize' from /home/heroku_rack/heroku.ru:1:in `new' from /home/heroku_rack/heroku.ru:1 The s3_backend.rb line 187 contains: @@s3_config = @@s3_config = YAML.load(ERB.new(File.read(@@s3_config_path)).result)[RAILS_ENV].symbolize_keys Any help would be great!

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  • Script Task - File Manipulation

    - by Sreejesh Kumar
    Using Script Task, I have written a code to create a folder and create a file of msword document inside the created folder. Its working in local machine. But its not working in another server, after I deployed it. The folder is created successfully, but the word document file is not created. for word document creation, I had to refer another dll where I had included an additional namespace "Microsoft.Office.Interop.Word". Is there anything else to do before deployment ?

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  • C++ Newbie: Passing an fstream to a function to read data

    - by vgm64
    I have a text file named num.txt who's only contents is the line 123. Then I have the following: void alt_reader(ifstream &file, char* line){ file.read(line, 3); cout << "First Time: " << line << endl; } int main() { ifstream inFile; int num; inFile.open("num.txt"); alt_reader(inFile, (char*)&num); cout << "Second Time: " << num << endl; } The output is: First Time: 123 Second Time: 3355185 Can you help me figure out how to get an fstream that is read in a function still assign the variable in main? I'm doing this because alt_reader really has a lot more to it, but this is the part I'm stuck on. Thanks a lot for the help.

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  • Specify XML schema data type of decimal or blank

    - by Jeremy Stein
    Is there a way in an XML schema to specify that an element may contain either an empty string or a decimal? If I specify the type as xs:decimal like this: <xs:element name="Sample" type="xs:decimal" /> then a blank value would not pass validation: <Sample/> (I realize that the best way to indicate no value would be to not include the element, but I was wondering if there was a way to allow blank or decimal.)

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  • How to move row data from one jqgrid

    - by user1268130
    I am trying to move row from one grid to another grid.I am able to add the row to 2nd Grid but not able to delete row in the 1st grid. Here is my code: var RowList; RowList = $('#questions_list').getGridParam('selarrrow'); for (var i=0, list=RowList.length; i<list; i++) { var selectedId = RowList[i]; var selectedData = $('#questions_list').jqGrid('getRowData', selectedId ); $('#selectedQuestions_list').jqGrid('addRowData', selectedId , selectedData ); $('#questions_list').jqGrid('delRowData',selectedId ); } But I am not able to delete row properly,when I add delrowdata,I am not able to add properly.Can any one help me in the code.Thanks in Advance

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  • Synchronization of Nested Data Structures between Threads in Java

    - by Dominik
    I have a cache implementation like this: class X { private final Map<String, ConcurrentMap<String, String>> structure = new HashMap...(); public String getValue(String context, String id) { // just assume for this example that there will be always an innner map final ConcurrentMap<String, String> innerStructure = structure.get(context); String value = innerStructure.get(id); if(value == null) { synchronized(structure) { // can I be sure, that this inner map will represent the last updated // state from any thread? value = innerStructure.get(id); if(value == null) { value = getValueFromSomeSlowSource(id); innerStructure.put(id, value); } } } return value; } } Is this implementation thread-safe? Can I be sure to get the last updated state from any thread inside the synchronized block? Would this behaviour change if I use a java.util.concurrent.ReentrantLock instead of a synchronized block, like this: ... if(lock.tryLock(3, SECONDS)) { try { value = innerStructure.get(id); if(value == null) { value = getValueFromSomeSlowSource(id); innerStructure.put(id, value); } } finally { lock.unlock(); } } ... I know that final instance members are synchronized between threads, but is this also true for the objects held by these members? Maybe this is a dumb question, but I don't know how to test it to be sure, that it works on every OS and every architecture.

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  • .NET and 64-bit application

    - by user54064
    I want to make existing .NET applications (WinForms and WebForms) run on 64-bit machines, optimized to take advantage of more memory available on 64-bit machines. What do I need to do to the applications to take advantage of the memory? Do I just select the target CPU as 64-bit? What is the advantage of selecting the target versus just compiling the app for All CPUs and have the .NET optimize the app locally? Will Crystal Reports (in VS 2008) run optimized for 64-bit and take advantage of the upper memory?

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  • Zend GData - seems really big

    - by musoNic80
    I've downloaded the Zend GData package to use the Google Calendar API. When I look through the contents of the package it seems to contain loads and loads of stuff. Do I really need all of it just for using Google Calendar and no other Google APIs? If not, what can i safely get rid of?

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  • Test Application Guide for Winforms

    - by Jonathan
    I'm a c# developer in a medium/small company. I use to do quick test of the apps that my workmates made and they use to test my applications. We test each form based in our experience. (yes, I know this is not a very formal method) Now a new guy without experience are going to join our team. We think now is the momento to make a little list of things that all we should test in each form. Divided by categories. For example usability: Test that the taborder of each control are properly setted, or Valitacion: Test that the max lenght of each textbox match with the max lenght of a field in the DB...etc We don't one to Reinvent the Wheels, so I want to know if such kind of document already exists. Thanks

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  • Algorithm for parsing a flat tree into a non-flat tree

    - by Chad Johnson
    I have the following flat tree: id name parent_id is_directory =========================================================== 50 app 0 1 31 controllers 50 1 11 application_controller.rb 31 0 46 models 50 1 12 test_controller.rb 31 0 31 test.rb 46 0 and I am trying to figure out an algorithm for getting this into the following tree structuree: [{ id: 50, name: app, is_directory: true children: [{ id: 31, name: controllers, is_directory: true, children: [{ id: 11, name: application_controller.rb is_directory: false },{ id: 12, name: test_controller.rb, is_directory: false }], },{ id: 46, name: models, is_directory: true, children: [{ id: 31, name: test.rb, is_directory: false }] }] }] Can someone point me in the right direction? I'm looking for steps (eg. build an associative array; loop through the array looking for x; etc.).

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  • Log files for group policy application deployment

    - by Cyril
    I'm looking into using group policy to deploy a couple of applications. I want to have the log of each installation written to a shared folder on a file server for tracking purposes. I can create the log if I pass the appropriate parameters. For example: msiexec /i Package.msi /l*vx c:\Package.log However using group policy for the deployment, you can't pass any parameters to the installation file. Is there anyway to specify the log file location in the process of creating the msi package?

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  • Wordpress main website and mobile website duplicate content.

    - by ObjectiveJ
    Basically a client has asked for his WordPress website to be turned into a mobile website as well. I have never attempted this and know nothing about SEO. However the issue has arisen that this may cause duplicate content issues with Google, and therefore both sites may be dropped in the rankings. I was looking at turning the website into a mobile site via one of the available WordPress mobile website plugins. My question is if duplicate content will be an issue? Has anyone ever tried this? After doing some reading I kind of think it may be possible to tell Google not to index the mobile website, although as I understand it It would be the same set of files. So I am unsure that if I tell it not to index one of them, that it will drop the other one as well. Can anyone with WordPress and SEO knowledge clear this up for me?

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