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• Jaxb to generate the XML directly to the OutputStream

  - by sonu

  Hi, I have a 500Mb csv file. I need to convert it into XML file. I am using the Jaxb to created the xml file. It is working fine for small amout of data. but for large amout of data like 300 mb it is throwing out of memory exception. Can anyone tell me that How can I create each element and write it into a file without creating the whole tree using the jaxb?" Thanks Sonu

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• Implementing a Cakephp Model using an Array

  - by Zubin

  The CakePHP Cookbook states that a Model can use a file (csv for example) instead of an actual database table but I couldn't find any implementation for it. I was wondering if it is possible to use an Array of data as a model in CakePHP since I have a fairly static set of data which is important to me in a relationship with another table but it doesn't make a whole lot of sense to create a complete table for it. Is it possible to implement a CakePHP Model using an Array?

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• PHP: How to forward on $_FILES using cURL

  - by Toby

  Hi. I'm trying to use cURL to forward on a http request from a form in a web application I'm developing. Essentially I need to submit the same form twice on different servers, for the second server I'm adding some security measures to the post data. I can receive $_POST information on the second form perfectly fine, however I'm having major troubles with my $_FILES - I've tried separating the two so there's a separate request for post and files data but still no luck. Is this possible?

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• Best database (mysql) structure for this case:

  - by robert

  we have three types of data (tables): Book (id,name,author...) ( about 3 million of rows) Category (id,name) ( about 2000 rows) Location (id,name) ( about 10000 rows) A Book must have at least 1 type of Category (up to 3) AND a Book must have only one Location. I need to correlate this data to get this query faster: Select Books where Category = 'cat_id' AND Location = 'loc_id' Select Books where match(name) against ('name of book') AND Location = 'loc_id' Please I need some help. Thanks

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• extJs Json Reader

  - by tinti

  Please help me with this problem. I'm new in extJs and i need a little help. I have this code Ext.onReady(function() { var datesStore = new Ext.data.JsonStore({ start : 'StartTableDate', end : 'FinishTableDate', autoLoad : true, proxy : new Ext.data.HttpProxy({ url : 'dates.json', method:'GET' }), fields : [ // 2 mandatory fields {name:'StartTableDate'}, {name:'FinishTableDate'} ] }); // i want to pass to variable start si end the values from JSON var start = 'StartTableDate'; var end = 'FinishTableDate';

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• What's the non brute force way to filter a Python dictionary?

  - by Thierry Lam

  I can filter the following dictionary like: data = { 1: {'name': 'stackoverflow', 'traffic': 'high'}, 2: {'name': 'serverfault', 'traffic': 'low'}, 3: {'name': 'superuser', 'traffic': 'low'}, 4: {'name': 'mathoverflow', 'traffic': 'low'}, } traffic = 'low' for k, v in data.items(): if v['traffic'] == traffic: print k, v Is there an alternate way to do the above filtering?

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• mcrypt_encrypt fails to initialise

  - by mixkat

  I am trying to encrypt some data in PHP using the Rijndael cipher in CBC mode with a 256bit key but for some reason I get the following error message: mcrypt_encrypt() Module initialization failed My code: $hashKey = hash('sha256',$key); $iv = hash('sha256',$hashKey); // ------Cipher-------------key-------------Data-------------Mode---------IV-- $encryptedQuestion = base64_encode(mcrypt_encrypt('MCRYPT_RIJNDAEL_256', $hashKey , $_POST['question'], MCRYPT_MODE_CBC, $iv)); Can anyone see whats wrong with this?

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• Cast IEnumerable<Inherited> To IEnumerable<Base>

  - by david2342

  I'm trying to cast an IEnumerable of an inherited type to IEnumerable of base class. Have tried following: var test = resultFromDb.Cast<BookedResource>(); return test.ToList(); But getting error: You cannot convert these types. Linq to Entities only supports conversion primitive EDM-types. The classes involved look like this: public partial class HistoryBookedResource : BookedResource { } public partial class HistoryBookedResource { public int ResourceId { get; set; } public string DateFrom { get; set; } public string TimeFrom { get; set; } public string TimeTo { get; set; } } public partial class BookedResource { public int ResourceId { get; set; } public string DateFrom { get; set; } public string TimeFrom { get; set; } public string TimeTo { get; set; } } [MetadataType(typeof(BookedResourceMetaData))] public partial class BookedResource { } public class BookedResourceMetaData { [Required(ErrorMessage = "Resource id is Required")] [Range(0, int.MaxValue, ErrorMessage = "Resource id is must be an number")] public object ResourceId { get; set; } [Required(ErrorMessage = "Date is Required")] public object DateFrom { get; set; } [Required(ErrorMessage = "Time From is Required")] public object TimeFrom { get; set; } [Required(ErrorMessage = "Time to is Required")] public object TimeTo { get; set; } } The problem I'm trying to solve is to get records from table HistoryBookedResource and have the result in an IEnumerable<BookedResource> using Entity Framework and LINQ. UPDATE: When using the following the cast seams to work but when trying to loop with a foreach the data is lost. resultFromDb.ToList() as IEnumerable<BookedResource>; UPDATE 2: Im using entity frameworks generated model, model (edmx) is created from database, edmx include classes that reprecent the database tables. In database i have a history table for old BookedResource and it can happen that the user want to look at these and to get the old data from the database entity framework uses classes with the same name as the tables to receive data from db. So i receive the data from table HistoryBookedResource in HistoryBookedResource class. Because entity framework generate the partial classes with the properties i dont know if i can make them virtual and override. Any suggestions will be greatly appreciated.

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• jQuery - Save to SQL via PHP

  - by Kenny Bones

  This is probably easy for you guys, but I can't understand it. I want to save the filename of an image to it's own row in the SQL base. Basically, I log on to the site where I have my own userID. And each user has its own column for background images. And the user can choose his own image if he wants to. So basically, when the user clicks on the image he wants, a jquery click event occurs and an ajax call is made to a php file which is supposed to take care of the actual update. The row for each user always exist so there's only an update of the data that's necessary. First, I collect the filename of the css property 'background-image' and split it so I get only the filename. I then store that filename in a variable I call 'filename' which is then passed on to this jQuery snippet: $.ajax({ url: 'save_to_db.php', data: filename, dataType:'Text', type: 'POST', success: function(data) { // Just for testing purposes. alert('Background changed to: ' + data); } }); And this is the php: <?php require("dbconnect.php") ?> <?php $uploadstring = ($_POST['filename']); mysql_query("UPDATE brukere SET brukerBakgrunn = $uploadstring WHERE brukerID=" .$_SESSION['id'] .""; mysql_close(); ?> Basically, each user has their own ID and this is called 'brukerID' The table everything is in is called 'brukere' and the column I'm supposed to update is the one called 'brukerBakgrunn' When I just run the javascript snippet, I get this message box in return where it says: Background changed to: Parse error: syntax error, unexpected ';' in /var/www/clients/client2/web8/web/save_to_db.php on line 8 I actualle get this messagebox twice, not sure why. Line 8 in 'save_to_db.php' is this one: mysql_query("UPDATE brukere SET brukerBakgrunn = $uploadstring WHERE brukerID=" .$_SESSION['id'] .""; Not sure if you need to see db_connect.php as well. I can add that later if you need to see it. So what am I missing here?

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• Show web part based on permissions

  - by pinniger

  So, I'm grabbing data from a sharepoint 2007 announcements list, and displaying it on another site. I need to make sure that the web part that I created is not displayed for people who don't have permissions for the site I'm getting the data from. How do I "disable" the web part if a user doesn't have permissions? I've tried this.enabled = false in the onload() event, didn't work though.

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• WPF PathGeometry/RotateTransform optimization

  - by devinb

  I am having performance issues when rendering/rotating WPF triangles If I had a WPF triangle being displayed and it will be rotated to some degree around a centrepoint, I can do it one of two ways: Programatically determine the points and their offset in the backend, use XAML to simply place them on the canvas where they belong, it would look like this: <Path Stroke="Black"> <Path.Data> <PathGeometry> <PathFigure StartPoint ="{Binding CalculatedPointA, Mode=OneWay}"> <LineSegment Point="{Binding CalculatedPointB, Mode=OneWay}" /> <LineSegment Point="{Binding CalculatedPointC, Mode=OneWay}" /> <LineSegment Point="{Binding CalculatedPointA, Mode=OneWay}" /> </PathFigure> </PathGeometry> </Path.Data> </Path> Generate the 'same' triangle every time, and then use a RenderTransform (Rotate) to put it where it belongs. In this case, the rotation calculations are being obfuscated, because I don't have any access to how they are being done. <Path Stroke="Black"> <Path.Data> <PathGeometry> <PathFigure StartPoint ="{Binding TriPointA, Mode=OneWay}"> <LineSegment Point="{Binding TriPointB, Mode=OneWay}" /> <LineSegment Point="{Binding TriPointC, Mode=OneWay}" /> <LineSegment Point="{Binding TriPointA, Mode=OneWay}" /> </PathFigure> </PathGeometry> </Path.Data> <Path.RenderTransform> <RotateTransform CenterX="{Binding Centre.X, Mode=OneWay}" CenterY="{Binding Centre.Y, Mode=OneWay}" Angle="{Binding Orientation, Mode=OneWay}" /> </Path.RenderTransform> </Path> My question is which one is faster? I know I should test it myself but how do I measure the render time of objects with such granularity. I would need to be able to time how long the actual rendering time is for the form, but since I'm not the one that's kicking off the redraw, I don't know how to capture the start time.

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• Documenting auto-generated code

  - by Diadistis

  Hello, I use code-generation for my data access layer and Doxygen for documentation. My problem is that I can't add Xml comments on the generated classes since they will be overwritten as soon as I re-generate the code. To be more precise I can add Xml comments to my custom methods (which are in a separate file as partial classes) but I can't do it on data properties. Any suggestions?

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• Linked list Recursion ...

  - by epsilon_G

  hey , I'd like to make a recursive function using C++ I make this class class linklist { private: struct node { int data; node *link; }*p; void linklist::print_num(node* p) { if (p != NULL) { cout << p->data << " "; print_num (p->link); } } in the main program what should I write ...

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• Group by query design help

  - by Midhat

  Consider this data PK field1 field2 1 a b 2 a (null) 3 x y 4 x z 5 q w I need to get this data select all columns from all rows where field1 has count 1 i tried and finally settled for select * from mytable where field1 in (select field1 from mytable group by field1 having count(field1)>1 ) order by field1 but there has to be a better way than this

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• LINQ Left Join And Right Join

  - by raja

  Hi, I need a help, I have two dataTable called A and B , i need all rows from A and matching row of B Ex: A: B: User | age| Data ID | age|Growth 1 |2 |43.5 1 |2 |46.5 2 |3 |44.5 1 |5 |49.5 3 |4 |45.6 1 |6 |48.5 I need Out Put: User | age| Data |Growth ------------------------ 1 |2 |43.5 |46.5 2 |3 |44.5 | 3 |4 |45.6 |

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• Where to begin with multi-threaded programming with c++?

  - by zoke

  I'm trying to implement my own IRC client as a personal proejct and I realized I needed a way to read and write from the socket at the same time. I realized I could have a reading thread which reads from the socket in the background and puts data in a queue and I could have another thread which writes data from a queue to the socket. However I have no idea on how to start with multithreaded programing or how to do it with c++. Where do I go from here?

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• Simulating interaction between two users in Jmeter

  - by Victoria

  I have to register two users and simulate interaction between them (for example, a conversation). I can do the following: register the first user, then register the second, sign in using first user's data, write message to the second user and sign out. Then sign in using the second user's data, answer to the message and sign out. Is it possible to implement users' conversation without signing out if the system requires enabled cookies for users?

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• php OOP, full sample

  - by lolalola

  Hi, On this site I found a lot of cool examples of PHP OOP. Maybe you know where to find complete examples? Guest books, registration forms, blog... When I look at the full model is much easier to understand OOP PHP. As different classes interacting with each other, exchange data How to use the generic class for sending data to the database Thanks

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• Draw chart for every row of the dataset in SSRS. Loop through dataset rows

  - by Rushme

  Hi, Could anyone help me with how can we create chart for every row of the dataset in SSRS (rdl) ! Suppose the dataset has the following data Name Age ------- ------- A 25 B 26 C 22 3 chart needs to be drawn for the x-axis/y-axis combination of A/25, B/26, C/22. How can I loop through rows of the dataset. And how can I restrict the chart to that particular data point. What would be the xsl expression corresponding to this functionality.

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• What programming shortcuts do you end up regretting or backing out?

  - by bryanjonker

  I saw this question and it reminded me of AutoGenerateColumns in the old DataGrid. The few times I've used them, I ended up backing it out because I needed data formatting past the standard "spit out the Data Source columns." Likewise, with toggle, it sounds like it would save time, but then you end up needing to keep track of state or something else, and you rewrite the code accordingly. Are there things that you end up using thinking it will save you time, but end up backing out because it doesn't do what you need?

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• DataServiceCollection load from external source

  - by spdro

  I'm trying to load external data to my entyity. DataServiceCollection<products> products = new DataServiceCollection<products>(); var adapter = new OleDbDataAdapter("SELECT * FROM [products$]", "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=d:\\products.xlsx;Extended Properties=\"Excel 12.0;HDR=YES;\""); DataSet ds = new DataSet(); adapter.Fill(ds, "excell"); products.Load(????); Can anyone help ?

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• How to return a value into webpage

  Hello: I have a simple webpage that displays the credit balance for calling cards. So far without any problems, with HTML, PHP and mysql, I was able to retrieve the balance from a data base. But I have to display the result in ANOTHER PAGE, wich looks akward because the page must reload. Can I just load this value into a pre-drawed field under the input fields that collect the data from the customer? Such as : Account Number: 134556 PIN: * |send| Balance is: $12.36 Thanks in advanced

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• Reporting Trend Line

  - by Dave Jarvis

  Hi, How would you create a line in JasperReports that follows the trend for the data, in addition to showing the data points? Here are before and after shots: Before After The Time Series report does not appear to have any such option to draw the orange line. (The orange line should be smooth, and thinner, but that's the general idea.) Any ideas how to craft such a report?

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• taking a character input in python from a file?

  - by mekasperasky

  in python , suppose i have file data.txt . which has 6 lines of data . I want to calculate the no of lines which i am planning to do by going through each character and finding out the number of '\n' in the file . How to take one character input from the file ? Readline taken the whole line .

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• jquery, jsonp and no success

  - by Damo

  Hi I have the following jquery in my code$j.getJSON("http://localhost:8080/WWTestHarnessWEB/ReadersToolkitFinalController.htm?jsoncallback=?", {'uID': 1}, function(data){alert(data);}); The json that i am returning looks like the following ({"positiveCount":"0","negativeCount":"999"}) But my alert is never firing. Any idea what i need to do to ensure that this will work? regards Damien

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