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  • Ruby on Rails: How to sanitize a string for SQL when not using find and other built-in methods?

    - by williamjones
    I'm trying to sanitize a string that involves user input without having to resort to manually crafting my own possibly buggy regex if possible. There are a number of methods in Rails that can allow you to enter in native SQL commands, how do people escape user input for those? The question I'm asking is a broad one, but in my particular case, I'm working with a column in my Postgres database that Rails does not natively understand as far as I know, the tsvector, which holds plain text search information. Rails is able to write and read from it as if it's a string, however, unlike a string, it doesn't seem to be automatically escaping it when I do things like vector= inside the model. For example, when I do model.name='::', where name is a string, it works fine. When I do model.vector='::' it errors out: ActiveRecord::StatementInvalid: PGError: ERROR: syntax error in tsvector: "::" "vectors" = E'::' WHERE "id" = 1 This seems to be a problem caused by lack of escaping of the semicolons, and I can manually set the vector='\:\:' fine. I also had the bright idea, maybe I can just call something like: ActiveRecord::Base.connection.execute "UPDATE medias SET vectors = ? WHERE id = 1", "::" However, this syntax doesn't work, because the raw SQL commands don't have access to find's method of escaping and inputting strings by using the ? mark. This strikes me as the same problem as calling connection.execute with any type of user input, as it all boils down to sanitizing the strings, but I can't seem to find any way to manually call Rails' SQL string sanitization methods. Can anyone provide any advice?

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  • Blob in Java/Hibernate/sql-server 2005

    - by Ramy
    Hi, I'm trying to insert an HTML blob into our sql-server2005 database. i've been using the data-type [text] for the field the blob will eventually live in. i've also put a '@Lob' annotation on the field in the domain model. The problem comes in when the HTML blob I'm attempting to store is larger than 65536 characters. Its seems that is the caracter-limit for a text data type when using the @Lob annotation. Ideally I'd like to keep the whole blob in tact rather than chunk it up into multiple rows in the database. I appreciate any help or insight that might be provided. Thanks! _Ramy Allow me to clarify annotation: @Lob @Column(length = Integer. MAX_VALUE) //per an answer on stackoverflow private String htmlBlob; database side (sql-server-2005): CREATE TABLE dbo.IndustrySectorTearSheetBlob( ... htmlBlob text NULL ... ) Still seeing truncation after 65536 characters... EDIT: i've printed out the contents of all possible strings (only 10 right now) that would be inserted into the Database. Each string seems to contain all cahracters, judging by the fact that the close html tag is present at the end of the string....

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  • CQRS - The query side

    - by mattcodes
    A lot of the blogsphere articles related to CQRS (command query repsonsibility) seperation seem to imply that all screens/viewmodels are flat. e.g. Name, Age, Location Of Birth etc.. and thus the suggestion that implementation wise we stick them into fast read source etc.. single table per view mySQL etc.. and pull them out with something like primitive SqlDataReader, kick that nasty nhibernate ORM etc.. However, whilst I agree that domain models dont mapped well to most screens, many of the screens that I work with are more dimensional, and Im sure this is pretty common in LOB apps. So my question is how are people handling screen where by for example it displays a summary of customer details and then a list of their orders with a [more detail] link etc.... I thought about keeping with the straight forward SQL query to the Query Database breaking off the outer join so can build a suitable ViewModel to View but it seems like overkill? Alternatively (this is starting to feel yuck) in CustomerSummaryView table have a text/big (whatever the type is in your DB) column called Orders, and the columns for the Order summary screen grid are seperated by , and rows by |. Even with XML datatype it still feeel dirty. Any thoughts on an optimal practice?

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  • Sharepoint BDC Error: The title property of entity tblStaff is set to an invalid value

    - by Christopher Rathermel
    I am just starting to create our Business Data Catalog(s) for our practice management system and I am running into an issue w/ our staff table. Background: I am using Business Data Catalog Definition Editor to create my ADF. I am using the RevertToSelf Authentication Mode. I have tried a few other tables and they seem to work just fine thus far.. only issue is w/ the staff table. If I removed all the columns for the staff entity except the ID and a few columns for the name it actually works. So it has a problem w/ one of my columns in tblStaff. I receive this error even when I set up an ADF w/ just this one entity. So w/ no associations.. When attempting to view the record: http://servername/ssp/admin/Content/tblstaff.aspx?StaffID={0} w/ {0} replaced w/ an actual staff ID I get the following error: The title property of entity tblStaff is set to an invalid value. Things I have tried: I noticed that I do have a column in my staff table called "Title" and removed it from ADF w/ no luck... Same error.. I tried to use bdc meta man to create my ADF and I got the same error... Any ideas? Chris

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  • Why use SQL database?

    - by martinthenext
    I'm not quite sure stackoverflow is a place for such a general question, but let's give it a try. Being exposed to the need of storing application data somewhere, I've always used MySQL or sqlite, just because it's always done like that. As it seems like the whole world is using these databases, most of all software products, frameworks, etc. It is rather hard for a beginning developer like me to ask a question - why? Ok, say we have some object-oriented logic in our application, and objects are related to each other somehow. We need to map this logic to the storage logic, so we need relations between database objects too. This leads us to using relational database and I'm ok with that - to put it simple, our database rows sometimes will need to have references to other tables' rows. But why do use SQL language for interaction with such a database? SQL query is a text message. I can understand this is cool for actually understanding what it does, but isn't it silly to use text table and column names for a part of application that no one ever seen after deploynment? If you had to write a data storage from scratch, you would have never used this kind of solution. Personally, I would have used some 'compiled db query' bytecode, that would be assembled once inside a client application and passed to the database. And it surely would name tables and colons by id numbers, not ascii-strings. In the case of changes in table structure those byte queries could be recompiled according to new db schema, stored in XML or something like that. What are the problems of my idea? Is there any reason for me not to write it myself and to use SQL database instead?

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  • Retrieving many huge sized EPS files and converting them to JPEG in ASP.NET application

    - by Ashish Gupta
    I have many (600) EPS files(300 KB - 1 MB) in database. In my ASP.NET application (using ASP.NET 4.0) I need to retrieve them one by one and call a web service which would convert the content to the JPEG file and update the database (JPEGContent column with the JPEG content). However, retrieving the content for 600 of them itself takes too long from the SQL management studio itself (takes 5 minutes for 10 EPS contents). So I have two issues:- 1) How to get the EPS content ( unfortunately, selecting certain number of content is not an option :-( ):- Approach 1:- foreach(var DataRow in DataTable.Rows) { // get the Id and byte[] of EPS // Call the web method to convert EPS content to JPEG which would also update the database. } or foreach(var DataRow in DataTable.Rows) { // get only the Id of EPS // Hit database to get the content of EPS // Call the web method to convert EPS content to JPEG which would also update the database. } or Any other approach? 2) Converting EPS to JPEG using a web method for 600 contents. Ofcourse, each call would be a long running operation. Would task parellel library (TPL) be a better way to achieve this? Also, is doing the entire thing in a SQL CLR function a good idea?

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  • Parsing tab delimited file with double quotes in Perl

    - by sfactor
    I have a data set that is tab delimited with the user-agent strings in double quotes. I need to parse each of these columns and based on the answer of my other post I used the Text::CSV module. 94410634 0 GET "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB6.6; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; AskTB5.5)" 1 The code is a simple one. #!/usr/bin/perl use strict; use warnings; use Text::CSV; my $csv = Text::CSV->new(sep_char => "\t"); while (<>) { if ($csv->parse($_)) { my @columns = $csv->fields(); print "@columns\n"; } else { my $err = $csv->error_input; print "Failed to parse line: $err"; } } But i get the Failed to parse line: error when I try it on this dataset. what am I doing wrong? I need to extract the 4th column containing the user-agent strings for further processing.

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  • How to Import XML generated by TFPT into Excel 2007?

    - by keerthivasanp
    Below is the xml content generated by TFPT for the WIQL issued. When I try to import this XML into Excel 2007 XML source pane shows only "Id", "RefName" and "Value" as fields to be mapped. Whereas I would like to display System.Id, System.State, Microsoft.VSTS.Common.ResolvedDate, Microsoft.VSTS.Common.StateChangeDate as column headings and corresponding value as rows. Any idea how to achieve this using XML import in Excel 2007. <?xml version="1.0" encoding="utf-8"?> <WorkItems> <WorkItem Id="40100"> <Field RefName="System.Id" Value="40100" /> <Field RefName="System.State" Value="Closed" /> <Field RefName="Microsoft.VSTS.Common.ResolvedDate" Value="3/17/2010 9:39:04 PM" /> <Field RefName="Microsoft.VSTS.Common.StateChangeDate" Value="4/20/2010 9:15:32 PM" /> </WorkItem> <WorkItem Id="44077"> <Field RefName="System.Id" Value="44077" /> <Field RefName="System.State" Value="Closed" /> <Field RefName="Microsoft.VSTS.Common.ResolvedDate" Value="3/1/2010 4:26:47 PM" /> <Field RefName="Microsoft.VSTS.Common.StateChangeDate" Value="4/20/2010 7:32:12 PM" /> </WorkItem> </WorkItems> Thanks

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  • How to make comment reply query in MYSQL?

    - by Prashant
    I am having comment reply (only till one level) functionality. All comments can have as many as replies but no replies can have their further replies. So my database table structure is like below Id ParentId Comment 1 0 this is come sample comment text 2 0 this is come sample comment text 3 0 this is come sample comment text 4 1 this is come sample comment text 5 0 this is come sample comment text 6 3 this is come sample comment text 7 1 this is come sample comment text In the above structures, commentid, 1 (has 2 replies) and 3 (1 reply) has replies. So to fetch the comments and their replies, one simple method is first I fetch all the comments having ParentId as 0 and then by running a while loop fetch all the replies of that particular commentId. But that seems to be running hundreds of queries if I'll have around 200 comments on a particular record. So I want to make a query which will fetch Comments with their replies sequentially as following; Id ParentId Comment 1 0 this is come sample comment text 4 1 this is come sample comment text 7 1 this is come sample comment text 2 0 this is come sample comment text 3 0 this is come sample comment text 6 3 this is come sample comment text 5 0 this is come sample comment text I also have a comment date column in my comment table, if anyone wants to use this with comment query. So finally I want to fetch all the comments and their replies by using one single mysql query. Please tell me how I can do that? Thanks

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  • improving data extraction from text file in Java

    - by owca
    I have CSV file with sample data in this form : 220 30 255 0 0 Javascript 200 20 0 255 128 Thinking in java , where the first column is height, second thickness, next three are rgb values for color and last one is title. All need to be treated as separate variables. I have already written my own solution for this, but I'm wondering if there are no better/easier/shorter ways of doing this. Extracted data will then be used to create Book object, throw every Book into array of books and print it with swing. Here's the code : private static Book[] addBook(Book b, Book[] bookTab){ Book[] tmp = bookTab; bookTab = new Book[tmp.length+1]; for(int i = 0; i < tmp.length; i++){ bookTab[i] = tmp[i]; } bookTab[tmp.length] = b; return bookTab; } public static void main(String[] args) { Book[] books = new Book[0]; try { BufferedReader file = new BufferedReader(new FileReader("K:\\books.txt")); String s; while ((s = file.readLine()) != null) { int hei, thick, R, G, B; String tit; hei = Integer.parseInt(s.substring(0, 3).replaceAll(" ", "")); thick = Integer.parseInt(s.substring(4, 6).replaceAll(" ", "")); R = Integer.parseInt(s.substring(10, 13).replaceAll(" ", "")); G = Integer.parseInt(s.substring(14, 17).replaceAll(" ", "")); B = Integer.parseInt(s.substring(18, 21).replaceAll(" ", "")); tit = s.substring(26); System.out.println(tyt+wys+grb+R+G+B); books = addBook(new Book(wys, grb, R, G, B, tyt),books); } file.close(); } catch (IOException e) { //do nothing } }

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  • mysql: Average over multiple columns in one row, ignoring nulls

    - by Sai Emrys
    I have a large table (of sites) with several numeric columns - say a through f. (These are site rankings from different organizations, like alexa, google, quantcast, etc. Each has a different range and format; they're straight dumps from the outside DBs.) For many of the records, one or more of these columns is null, because the outside DB doesn't have data for it. They all cover different subsets of my DB. I want column t to be their weighted average (each of a..f have static weights which I assign), ignoring null values (which can occur in any of them), except being null if they're all null. I would prefer to do this with a simple SQL calculation, rather than doing it in app code or using some huge ugly nested if block to handle every permutation of nulls. (Given that I have an increasing number of columns to average over as I add in more outside DB sources, this would be exponentially more ugly and bug-prone.) I'd use AVG but that's only for group by, and this is w/in one record. The data is semantically nullable, and I don't want to average in some "average" value in place of the nulls; I want to only be counting the columns for which data is there. Is there a good way to do this? Ideally, what I want is something like UPDATE sites SET t = AVG(a*a_weight,b*b_weight,...) where any null values are just ignored and no grouping is happening.

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  • pass Validation error to UI element in WPF?

    - by Tony
    I am using IDataErrorInfo to validate my data in a form in WPF. I have the validation implemented in my presenter. The actual validation is happening, but the XAML that's supposed to update the UI and set the style isn't happening. Here it is: <Style x:Key="textBoxInError" TargetType="{x:Type TextBox}"> <Style.Triggers> <Trigger Property="Validation.HasError" Value="true"> <Setter Property="ToolTip" Value="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=(Validation.Errors)[0].ErrorContent}"/> <Setter Property="Background" Value="Red"/> </Trigger> </Style.Triggers> </Style> The problem is that my binding to Validation.Errors contains no data. How do I get this data from the Presenter class and pass it to this XAML so as to update the UI elements? EDIT: Textbox: <TextBox Style="{StaticResource textBoxInError}" Name="txtAge" Height="23" Grid.Row="3" Grid.Column="0" HorizontalAlignment="Right" VerticalAlignment="Center" Width="150"> <TextBox.Text> <Binding Path="StrAge" Mode="TwoWay" ValidatesOnDataErrors="True" UpdateSourceTrigger="PropertyChanged"/> </TextBox.Text> The validation occurs, but the style to be applied when data is invalid is not happening.

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  • PHP array manipulation

    - by user295189
    I have the code below . it looks for the case and creates an array of rows and columns. $pv->results[$row1][1][0] actually is $pv->result->[rownumber][coulmnnumber][0]. Now this is for only 2 columns as you can see. However I want an array like $myArr = array(0=>1, 1=>7, 2=>8, 3=>9 ) to be added below for column. What it is doing, is adding 4 columns (0,1,2,3) into the code below. So now I will have 4 cases instead of 2 cases as I need to more columns. Also the case value will not be 1 and 2, it will be 1, 7, 8 and 9 respectively. How can I do that? Thanks. for($i=0;$i<count($pv->rawData); $i++){ SWITCH ($pv->rawData[$i]->my ID){ CASE '1': $row1++; $pv->results[$row1][1][0] = $pv->rawData[$i]->data; break; CASE '2': $row2++; $pv->results[$row2][2][0] = $pv->rawData[$i]->data; break; }

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  • displaying database content in wxHaskell

    - by snorlaks
    Hello, Im using tutorials from wxHaskell and want to display content of table movies in the grid. HEre is my code : {-------------------------------------------------------------------------------- Test Grid. --------------------------------------------------------------------------------} module Main where import Graphics.UI.WX import Graphics.UI.WXCore hiding (Event) import Database.HDBC.Sqlite3 (connectSqlite3) import Database.HDBC main = start gui gui :: IO () gui = do f <- frame [text := "Grid test", visible := False] -- grids g <- gridCtrl f [] gridSetGridLineColour g (colorSystem Color3DFace) gridSetCellHighlightColour g black appendColumns g (movies) -- Here is error: -- Couldn't match expected type [String]' -- against inferred typeIO [[String]]' --appendRows g (map show [1..length (tail movies)]) --mapM_ (setRow g) (zip [0..] (tail movies)) gridAutoSize g -- layout set f [layout := column 5 [fill (dynamic (widget g))] ] focusOn g set f [visible := True] -- reduce flicker at startup. return () where movies = do conn <- connectSqlite3 "Spop.db" r <- quickQuery' conn "SELECT id, title, year, description from Movie where id = 1" [] let myResult = map convRow r return myResult setRow g (row,values) = mapM_ ((col,value) - gridSetCellValue g row col value) (zip [0..] values) {-------------------------------------------------------------------------------- Library?f --------------------------------------------------------------------------------} gridCtrl :: Window a - [Prop (Grid ())] - IO (Grid ()) gridCtrl parent props = feed2 props 0 $ initialWindow $ \id rect - \props flags - do g <- gridCreate parent id rect flags gridCreateGrid g 0 0 0 set g props return g appendColumns :: Grid a - [String] - IO () appendColumns g [] = return () appendColumns g labels = do n <- gridGetNumberCols g gridAppendCols g (length labels) True mapM_ ((i,label) - gridSetColLabelValue g i label) (zip [n..] labels) appendRows :: Grid a - [String] - IO () appendRows g [] = return () appendRows g labels = do n <- gridGetNumberRows g gridAppendRows g (length labels) True mapM_ ((i,label) - gridSetRowLabelValue g i label) (zip [n..] labels) convRow :: [SqlValue] - [String] convRow [sqlId, sqlTitle, sqlYear, sqlDescription] = [intid, title, year, description] where intid = (fromSql sqlId)::String title = (fromSql sqlTitle)::String year = (fromSql sqlYear)::String description = (fromSql sqlDescription)::String What should I do to get rif of error in code above (24th line)

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  • How to best show progress info when using ADO.NET?

    - by Yadyn
    I want to show the user detailed progress information when performing potentially lengthy database operations. Specifically, when inserting/updating data that may be on the order of hundreds of KB or MB. Currently, I'm using in-memory DataTables and DataRows which are then synced with the database via TableAdapter.Update calls. This works fine and dandy, but the single call leaves little opportunity to glean any kind of progress info to show to the user. I have no idea how much data is passing through the network to the remote DB or its progress. Basically, all I know is when Update returns and it is assumed complete (barring any errors or exceptions). But this means all I can show is 0% and then a pause and then 100%. I can count the number of rows, even going so far to cound how many are actually Modified or Added, and I could even maybe calculate per DataRow its estimated size based on the datatype of each column, using sizeof for value types like int and checking length for things like strings or byte arrays. With that, I could probably determine, before updating, an estimated total transfer size, but I'm still stuck without any progress info once Update is called on the TableAdapter. Am I stuck just using an indeterminate progress bar or mouse waiting cursor? Would I need to radically change our data access layer to be able to hook into this kind of information? Even if I can't get it down to the precise KB transferred (like a web browser file download progress bar), could I at least know when each DataRow/DataTable finishes or something? How do you best show this kind of progress info using ADO.NET?

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  • jqGrid zebra striping problem

    - by ShiVik
    Hello all I have just started with jQuery. I am trying to implement zebra striping in my jqGrid class. I am having the problem when user clicks on sort column, all rows get rearranged and the zebra striping is blown away. Zebra Striping code $("#item_table tbody tr:odd").addClass("alt"); $("#item_table tbody tr").mouseover(function() { $(this).addClass("over"); }); $("#item_table tbody tr").mouseout(function() { $(this).removeClass("over"); }); jqGrid code jQuery.extend(jQuery.jgrid.defaults, { autowidth: true, hidegrid: false, colModel:[ { name: 'icon', index: 'icon', width: 0, resizable: false }, { name: 'name', index: 'name', width: 0, resizable: false }, { name: 'price', index: 'price', width: 0, sorttype: "int", resizable: false } ], onSortCol: function(index, iCol, sortorder) { // This doesn't work - IT SHOULDN'T EITHER, since event is called // just after clicking to sort but before actual sorting jQuery("#item_table tbody tr:odd").addClass("odd"); }, caption: "Item Table" }); I also tried loadComplete, gridComplete events, but to no avail. How should I proceed with this? Have I even started this right? Regards Vikram

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  • Problem with Binding Multiple Objects on WPF

    - by Diego Modolo Ribeiro
    Hi, I'm developing a user control called SearchBox, that will act as a replacer for ComboBox for multiple records, as the performance in ComboBox is low for this scenario, but I'm having a big binding problem. I have a base control with a DependencyProperty called SelectedItem, and my SearchControl shows that control so that the user can select the record. The SearchControl also has a DependencyProperty called SelectedItem on it, and it is being updated when the user selects something on the base control, but the UI, wich has the SearchControl, is not being updated. I used a null converter so that I could see if the property was updating, but it's not. Below is some of the code: This is the UI: <NectarControles:MaskedSearchControl x:Name="teste" Grid.Row="0" Grid.Column="1" Height="21" ItemsSource="{Binding C001_Lista}" DisplayMember="C001_Codigo" Custom:CustomizadorTextBox.CodigoCampo="C001_Codigo" ViewType="{x:Type C001:C001_Search}" ViewModelType="{x:Type C001_ViewModel:C001_ViewModel}" SelectedItem="{Binding Path=Instancia.C001_Holding, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, Converter={StaticResource DebuggingConverter}}"> </NectarControles:MaskedSearchControl> This is the relevante part of the SearchControl: Binding selectedItemBinding = new Binding("SelectedItem"); selectedItemBinding.Source = this.SearchControlBase; selectedItemBinding.Mode = BindingMode.TwoWay; selectedItemBinding.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged; this.SetBinding(SelectedItemProperty, selectedItemBinding); ... public System.Data.Objects.DataClasses.IEntityWithKey SelectedItem { get { return (System.Data.Objects.DataClasses.IEntityWithKey)GetValue(SelectedItemProperty); } set { SetValue(SelectedItemProperty, value); if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs("SelectedItem")); } } Please someone help me... Tks...

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  • i want the ruby code of the php code i have given inside , please help me out

    - by Arpit Vaishnav
    <?php // amcharts.com export to image utility // set image type (gif/png/jpeg) $imgtype = 'jpeg'; // set image quality (from 0 to 100, not applicable to gif) $imgquality = 100; // get data from $_POST or $_GET ? $data = &$_POST; // get image dimensions $width = (int) $data['width']; $height = (int) $data['height']; // create image object $img = imagecreatetruecolor($width, $height); // populate image with pixels for ($y = 0; $y < $height; $y++) { // innitialize $x = 0; // get row data $row = explode(',', $data['r'.$y]); // place row pixels $cnt = sizeof($row); for ($r = 0; $r < $cnt; $r++) { // get pixel(s) data $pixel = explode(':', $row[$r]); // get color $pixel[0] = str_pad($pixel[0], 6, '0', STR_PAD_LEFT); $cr = hexdec(substr($pixel[0], 0, 2)); $cg = hexdec(substr($pixel[0], 2, 2)); $cb = hexdec(substr($pixel[0], 4, 2)); // allocate color $color = imagecolorallocate($img, $cr, $cg, $cb); // place repeating pixels $repeat = isset($pixel[1]) ? (int) $pixel[1] : 1; for ($c = 0; $c < $repeat; $c++) { // place pixel imagesetpixel($img, $x, $y, $color); // iterate column $x++; } } } // set proper content type header('Content-type: image/'.$imgtype); header('Content-Disposition: attachment; filename="chart.'.$imgtype.'"'); // stream image $function = 'image'.$imgtype; if ($imgtype == 'gif') { $function($img); } else { $function($img, null, $imgquality); } // destroy imagedestroy($img); ?

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  • Rails 2.3 session

    - by Sam Kong
    Hi, I am developing a rails 2.3.2 app. I need to keep session_id for an order record, retrieve it and finally delete the session_id when the order is completed. It worked when I used cookies as session store but it doesn't for active_record store. (I restarted my browser, so no cache issue.) I know rails 2.3 implements lazy session load. I read some info about it but am still confused. Can somebody clarify how I use session_id for such a case? What I am doing is... A user make an order going through several pages. There is no sign-up, neither login. So I keep session_id in the order record so that no other user can access the order. @order = Order.last :conditions = {:id = params[:id], :session_id = session[:session_id] } When the order is finished, I set nil to session_id column. How would you implement such a case in lazy session(and active_record store) environment? Thanks. Sam

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  • create board for game with events support

    - by netmajor
    How can I create board for simple game, looks like for chess,but user could dynamically change number of column and rows? In cells I could insert symbol of pawn, like small image or just ellipse or rectangle with fill. This board should have possibility add and remove pawn from cells and move pown from one cell to another. My first idea was Grid. I do it in code behind, but it's hurt to implement events or everything in runtime create board :/ int size = 12; Grid board = new Grid(); board.ShowGridLines = true; for (int i = 0; i < size;i++ ) { board.ColumnDefinitions.Add(new ColumnDefinition()); board.RowDefinitions.Add(new RowDefinition()); } //komputer Rectangle ai = new Rectangle(); ai.Height = 20; ai.Width = 20; ai.AllowDrop = true; ai.Fill = Brushes.Orange; Grid.SetRow(ai, 0); Grid.SetColumn(ai,0); //czlowiek Rectangle hum = new Rectangle(); hum.Height = 20; hum.Width = 20; hum.AllowDrop = true; hum.Fill = Brushes.Green; Grid.SetRow(hum,size); Grid.SetColumn(hum,size); board.Children.Add(ai); board.Children.Add(hum); this.Content = board; It's a way to do this dynamically col and row change in XAML ? It's better way to implement that board create and implement events on move pawn from one cell to another ?

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  • create TableModel and populate jTable dynamically

    - by Julia
    Hi all! I want to store the results of reading lucene index into jTable, so that I can make it sortable by different columns. From index I am reading terms with different measures of their frequencies. Table columns are these : [string term][int absFrequency][int docFrequency][double invFrequency] So i in AbstractTableModel I can define column names, but i dont know how to get the Object[][]data with results from the following method: public static void FrequencyMap(Directory indexDir) throws Exception { List<Object>redoviLista = new ArrayList<Object>(); //final Map<String,TermRow> map = new TreeMap<String,TermRow>(); List<String>termList = new ArrayList<String>(); IndexReader iReader = IndexReader.open(indexDir); FilterIndexReader fReader = new FilterIndexReader(iReader); int numOfDocs = fReader.numDocs(); TermEnum terms = fReader.terms(); while (terms.next()){ Term term = terms.term(); String termText = term.text(); termList.add(termText); //Calculating the frequencies int df = iReader.docFreq(term); double idf = 0.0F; idf = Math.log10((double) numOfDocs / df); double tfidf = (df*idf); //Here comes important part Object oneTableRow[] = {termText, df, idf, tfidf}; redoviLista.add(jedanRed); // So i thaught to store them into list, and then later to copy into table, but didnt manage } iReader.close(); // So I need something like this, and i Neeed this array to be stored out of this method Object[][]data = new Object[redoviLista.size()][]; for (int i = 0; i < data.length; i++) { data[i][0] = redoviLista.get(i); } So I am kindda stuck here to proceed to implement AbstractTableModel and populate and display this table .... :/ Please help!

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  • Cache Class compilation error using parent-child relationships and cache sql storage

    - by Fred Altman
    I have the global listed below that I'm trying to create a couple of cache classes using sql stoarage for: ^WHEAIPP(1,26,1)=2 ^WHEAIPP(1,26,1,1)="58074^^SMSNARE^58311" 2)="58074^59128^MPHILLIPS^59135" ^WHEAIPP(1,29,1)=2 ^WHEAIPP(1,29,1,1)="58074^^SMSNARE^58311" 2)="58074^59128^MPHILLIPS^59135" ^WHEAIPP(1,93,1)=2 ^WHEAIPP(1,93,1,1)="58884^^SSNARE^58948" 2)="58884^59128^MPHILLIPS^59135" ^WHEAIPP(1,166,1)=2 ^WHEAIPP(1,166,1,1)="58407^^SMSNARE^58420" 2)="58407^59128^MPHILLIPS^59135" ^WHEAIPP(1,324,1)=2 ^WHEAIPP(1,324,1,1)="58884^^SSNARE^58948" 2)="58884^59128^MPHILLIPS^59135" ^WHEAIPP(1,419,1)=3 ^WHEAIPP(1,419,1,1)="59707^^SSNARE^59708" 2)="59707^^MPHILLIPS^59910,58000^^^^" 3)="59707^59981^SSNARE^60117,53241^^^^" The first two subscripts of the global (Hmo and Keen) make a unique entry. The third subscript (Seq) has a property (IppLineCount) which is the number of IppLines in the fourth subscript level (Seq2). I create the class WIppProv below which is the parent class: /// <PRE> /// ============================ /// Generated Class Definition /// Table: WMCA_B_IPP_PROV /// Generated by: FXALTMAN /// Generated on: 05/21/2012 13:46:41 /// Generator: XWESTblClsGenV2 /// ---------------------------- /// </PRE> Class XFXA.MCA.WIppProv Extends (%Persistent, %XML.Adaptor) [ ClassType = persistent, Inheritance = right, ProcedureBlock, StorageStrategy = SQLMapping ] { /// .HMO Property Hmo As %Integer; /// .KEEN Property Keen As %Integer; /// .SEQ Property Seq As %String; Property IppLineCount As %Integer; Index iMaster On (Hmo, Keen, Seq) [ IdKey, Unique ]; Relationship IppLines As XFXA.MCA.WIppProvLine [ Cardinality = many, Inverse = relWIppProv ]; <Storage name="SQLMapping"> <DataLocation>^WHEAIPP</DataLocation> <ExtentSize>1000000</ExtentSize> <SQLMap name="DBMS"> <Data name="IppLineCount"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>1</Piece> </Data> <Global>^WHEAIPP</Global> <PopulationType>full</PopulationType> <Subscript name="1"> <AccessType>Sub</AccessType> <Expression>{Hmo}</Expression> <LoopInitValue>1</LoopInitValue> </Subscript> <Subscript name="2"> <AccessType>Sub</AccessType> <Expression>{Keen}</Expression> </Subscript> <Subscript name="3"> <AccessType>Sub</AccessType> <LoopInitValue>1</LoopInitValue> <Expression>{Seq}</Expression> </Subscript> <Type>data</Type> </SQLMap> <StreamLocation>^XFXA.MCA.WIppProvS</StreamLocation> <Type>%Library.CacheSQLStorage</Type> </Storage> } This class compiles fine. Next I created the WIppProvLine class listed below and made a parent-child relationship between the two: /// Used to represent a single line of IPP data Class XFXA.MCA.WIppProvLine Extends (%Persistent, %XML.Adaptor) [ ClassType = persistent, Inheritance = right, ProcedureBlock, StorageStrategy = SQLMapping ] { /// .CLM_AMT_ALLOWED node: 0 piece: 6<BR> /// This field should be used in conjunction with the Claim Operator field to /// define a whole claim dollar amount at which a particular claim should be /// flagged with a Pend status. Property ClmAmtAllowed As %String; /// .CLM_LINE_AMT_ALLOWED node: 0 piece: 8<BR> /// This field should be used in conjunction with the Clm Line Operator field to /// define a claim line dollar amount at which a particular claim should be flagged /// with a Pend status. Property ClmLineAmtAllowed As %String; /// .CLM_LINE_OP node: 0 piece: 7<BR> /// A new Table/Column Reference that gives the SIU (Special Investigative Unit) /// the ability to look for claim line dollars above, below, or equal to a set /// amount. Property ClmLineOp As %String; /// .CLM_OP node: 0 piece: 5<BR> /// A new Table/Column Reference that gives the SIU (Special Investigative Unit) /// the ability to look for claim dollars above, below, or equal to a set amount. Property ClmOp As %String; Property EffDt As %Date; Property Hmo As %Integer; /// .IPP_REASON node: 0 piece: 10<BR> /// IPP Reason Code Property IppCode As %Integer; Property Keen As %Integer; /// .LAST_CHG_DT node: 0 piece: 4<BR> /// Last Changed Date Property LastChgDt As %Date; /// .PX_DX_CDE_FLAG node: 0 piece: 9<BR> /// A Flag to indicate whether or not Procedure Codes or Diagnosis Codes are to be /// associated with this SIU Flag Type Entry. If the Flag = Y, then control would /// jump to a new screen where the user can enter the necessary codes. Property PxDxCdeFlag As %String; Property Seq As %String; Property Seq2 As %String; Index iMaster On (Hmo, Keen, Seq, Seq2) [ IdKey, PrimaryKey, Unique ]; /// .TERM_DT node: 0 piece: 2<BR> /// Term Date Property TermDt As %Date; /// .USER_INI node: 0 piece: 3 Property UserIni As %String; Relationship relWIppProv As XFXA.MCA.WIppProv [ Cardinality = one, Inverse = IppLines ]; Index relWIppProvIndex On relWIppProv; //Index NewIndex1 On (RelWIppProv, Seq2) [ IdKey, PrimaryKey, Unique ]; <Storage name="SQLMapping"> <ExtentSize>1000000</ExtentSize> <SQLMap name="DBMS"> <ConditionalWithHostVars></ConditionalWithHostVars> <Data name="ClmAmtAllowed"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>6</Piece> </Data> <Data name="ClmLineAmtAllowed"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>8</Piece> </Data> <Data name="ClmLineOp"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>7</Piece> </Data> <Data name="ClmOp"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>5</Piece> </Data> <Data name="EffDt"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>1</Piece> </Data> <Data name="Hmo"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>11</Piece> </Data> <Data name="IppCode"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>10</Piece> </Data> <Data name="LastChgDt"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>4</Piece> </Data> <Data name="PxDxCdeFlag"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>9</Piece> </Data> <Data name="TermDt"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>2</Piece> </Data> <Data name="UserIni"> <Delimiter>"^"</Delimiter> <Node>+0</Node> <Piece>3</Piece> </Data> <Global>^WHEAIPP</Global> <Subscript name="1"> <AccessType>Sub</AccessType> <Expression>{Hmo}</Expression> <LoopInitValue>1</LoopInitValue> </Subscript> <Subscript name="2"> <AccessType>Sub</AccessType> <Expression>{Keen}</Expression> <LoopInitValue>1</LoopInitValue> </Subscript> <Subscript name="3"> <AccessType>Sub</AccessType> <Expression>{Seq}</Expression> <LoopInitValue>1</LoopInitValue> </Subscript> <Subscript name="4"> <AccessType>Sub</AccessType> <Expression>{Seq2}</Expression> <LoopInitValue>1</LoopInitValue> </Subscript> <Type>data</Type> </SQLMap> <StreamLocation>^XFXA.MCA.WIppProvLineS</StreamLocation> <Type>%Library.CacheSQLStorage</Type> </Storage> } When I try to compile this one I get the following error: ERROR #5502: Error compiling SQL Table 'XFXA_MCA.WIppProvLine %msg: Table XFXA_MCA.WIppProvLine has the following unmapped (not defined on the data map) fields: relWIppProv' ERROR #5030: An error occurred while compiling class XFXA.MCA.WIppProvLine Detected 1 errors during compilation in 2.745s. What am I doing wrong? Thanks in Advance, Fred

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  • How do you think while formulating Sql Queries. Is it an experience or a concept ?

    - by Shantanu Gupta
    I have been working on sql server and front end coding and have usually faced problem formulating queries. I do understand most of the concepts of sql that are needed in formulating queries but whenever some new functionality comes into the picture that can be dont using sql query, i do usually fails resolving them. I am very comfortable with select queries using joins and all such things but when it comes to DML operation i usually fails For every query that i never done before I usually finds uncomfortable with that while creating them. Whenever I goes for an interview I usually faces this problem. Is it their some concept behind approaching on formulating sql queries. Eg. I need to create an sql query such that A table contain single column having duplicate record. I need to remove duplicate records. I know i can find the solution to this query very easily on Googling, but I want to know how everyone comes to the desired result. Is it something like Practice Makes Man Perfect i.e. once you did it, next time you will be able to formulate or their is some logic or concept behind. I could have get my answer of solving above problem simply by posting it on stackoverflow and i would have been with an answer within 5 to 10 minutes but I want to know the reason. How do you work on any new kind of query. Is it a major contribution of experience or some an implementation of concepts. Whenever I learns some new thing in coding section I tries to utilize it wherever I can use it. But here scenario seems to be changed because might be i am lagging in some concepts.

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  • Optimizing MySQL update query

    - by Jernej Jerin
    This is currently my MySQL UPDATE query, which is called from program written in Java: String query = "UPDATE maxday SET DatePressureREL = (SELECT Date FROM ws3600 WHERE PressureREL = (SELECT MAX" + "(PressureREL) FROM ws3600 WHERE Date >= '" + Date + "') AND Date >= '" + Date + "' ORDER BY Date DESC LIMIT 1), " + "PressureREL = (SELECT PressureREL FROM ws3600 WHERE PressureREL = (SELECT MAX(PressureREL) FROM ws3600 " + "WHERE Date >= '" + Date + "') AND Date >= '" + Date + "' ORDER BY Date DESC LIMIT 1), ..."; try { s.execute(query); } catch (SQLException e) { System.out.println("SQL error"); } catch(Exception e) { e.printStackTrace(); } Let me explain first, what does it do. I have two tables, first is ws3600, which holds columns (Date, PressureREL, TemperatureOUT, Dewpoint, ...). Then I have second table, called maxday, which holds columns like DatePressureREL, PressureREL, DateTemperatureOUT, TemperatureOUT,... Now as you can see from an example, I update each column, the question is, is there a faster way? I am asking this, because I am calling MAX twice, first to find the Date for that value and secondly to find the actual value. Now I know that I could write like that: SELECT Date, PressureREL FROM ws3600 WHERE PressureREL = (SELECT MAX(PressureREL) FROM ws3600 WHERE Date >= '" + Date + "') AND Date >= '" + Date + "' ORDER BY Date DESC LIMIT 1 That way I get the Date of the max and the max value at the same time and then update with those values the data in maxday table. But the problem of this solution is, that I have to execute many queries, which as I understand takes alot more time compared to executing one long mysql query because of overhead in sending each query to the server. If there is no better way, which solution beetwen this two should I choose. The first, which only takes one query but is very unoptimized or the second which is beter in terms of optimization, but needs alot more queries which probably means that the preformance gain is lost because of overhead in sending each query to the server?

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  • SQL Joining Two or More from Table B with Common Data in Table A

    - by Matthew Frederick
    The real-world situation is a series of events that each have two or more participants (like sports teams, though there can be more than two in an event), only one of which is the host of the event. There is an Event db table for each unique event and a Participant db table with unique participants. They are joined together using a Matchup table. They look like this: Event EventID (PK) (other event data like the date, etc.) Participant ParticipantID (PK) Name Matchup EventID (FK to Event table) ParicipantID (FK to Participant) Host (1 or 0, only 1 host = 1 per EventID) What I'd like to get as a result is something like this: EventID ParticipantID where host = 1 Participant.Name where host = 1 ParticipantID where host = 0 Participant.Name where host = 0 ParticipantID where host = 0 Participant.Name where host = 0 ... Where one event has 2 participants and another has 3 participants, for example, the third participant column data would be null or otherwise noticeable, something like (PID = ParticipantID): EventID PID-1(host) Name-1 (host) PID-2 Name-2 PID-3 Name-3 ------- ----------- ------------- ----- ------ ----- ------ 1 7 Lions 8 Tigers 12 Bears 2 11 Dogs 9 Cats NULL NULL I suspect the answer is reasonably straightforward but for some reason I'm not wrapping my head around it. Alternately it's very difficult. :) I'm using MYSQL 5 if that affects the available SQL.

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