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• What causes POCO proxy entities to only sometimes be created in Entity Framework 4.

  - by Kohan

  I have set up my POCOs and I have marked their public properties as virtual and I am successfully getting Proxies most of the time (95%) but randomly I am getting EF return some proxies and some non-proxies. Recycling the app pool when this happens will then fix this instance of the error and it will go away for an amount of time. Then it will re-occur in some other random (it seems) place. What can cause this sort of behaviour? Thanks, Kohan

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• Grails: How can I search through children in a hasMany relationship?

  - by intargc

  If I have a Client domain class, and that Client hasMany Courses. How do I find the course I'm looking for? For instance: class Client { String name static hasMany = [courses:Course] } class Course { String name static belongsTo = [client:Client] } def client = Client.get(1) I want to "find" or "search" within that courses relationship. Maybe something like: client.courses.find(name:'Whatever') Is there any way to do this with Grails?

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• Custom controls in 2008

  - by Bala

  Using custom controls in VS 2008 shows frequent errors like object reference not set to an instance of an object and 'could not be set on prperty'.

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• Add a datatable to a data set

  - by Jibu P C_Adoor

  Hii... I have a data table 'dt1' that is belongs to 'ds1'. I have created another instance of dataset 'ds2' and try to add the datatable 'dt1' to 'ds2'. Now i got one exception 'DataTable already belongs to another data set'. Is there any reliable way to add the dt1 to ds2?

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• Can Python's set absesnce of ordering be considered random order?

  - by Chuim

  Hello people. I'd like to know if the absence of element ordering of the Python's built-in set structure is "random enough". For instance, taking the iterator of a set, can it be considered a shuffled view of its elements? (If it matters, I'm running Python 2.6.5 on a Windows host.)

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• Mercurial & Windows Server 2003

  - by tjsimmons

  Hi all, I just set up Mercurial on our main webserver, hosting repositories via hgwebdir.cgi. The problem I'm having now is when I run hg push from my local machine to the server's repository, it takes an absolutely ridiculous amount of time to push a very small directory, with only a single changeset. Is it possible that I've set something up wrong? I keep getting HTTP Error 502: Bad Gateway. Thanks!

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• How can I delete all unversioned/ignored files/folders in my working copy?

  - by Nick Meyer

  If I have a working copy of a Subversion repository, is there a way to delete all unversioned or ignored files in that working copy with a single command or tool? Essentially, I'm looking for the SVN analogue to git clean. Either a command line or GUI solution (for TortoiseSVN) would be acceptable.

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• How to force tracker to re-index a folder?

  - by ubuntudroid

  I'm using the tracker indexing tool to search for and in files on my Ubuntu 10.10 amd64 system. Having recently added some of files into a single folder I wondered how to force tracker to re-index this folder so I would be able to perform search-queries on these files. Any ideas? A terminal command would be completely sufficient.

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• Question with "extern" in C

  - by why

  When programming, I would like to split one large file(which contains main function) to many small files, so there is one common case: functions in small files can modify the var from main file, so i think extern is very useful! for instance: in main.c extern int i = 100; in small.c extern int i; fprintf(stdout, "var from main file: %d\n", i); I just want to know is my understanding right?

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• Oracle - Return shortest string value in a set of rows

  - by Sridhar

  Hi, I'm trying to write a query that returns the shortest string value in the column. For ex: if ColumnA has values ABCDE, ZXDR, ERC, the query should return "ERC". I've written the following query, but I'm wondering if there is any better way to do this? BTW, the query should return a single value. select distinct ColumnA from ( select ColumnA, rank() over (order by length(ColumnA), ColumnA) len_rank from TableA where ColumnB = 'XXX' ) where len_rank <= 1 Thank you.

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• What is the most efficient way to populate class attributes with a row from a database query?

  - by ensnare

  Looking to have a database query set all the instance variables in a class: Example: def populate(self, if): #Perform mysql query self._name = row['name'] self._email = row['email'] ... What's the fastest way to do this? Or is this not recommended (with a better approach)? Thanks.

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• Two Persistence Units, Two entityManagerFactory(s), SPring, JPA, Hibernate

  - by sebajb

  I am using Two entityManagerFactory{1,2} based on two persistence units, autowired through spring, hibernate, with resource local. My DaoImpls are configured with the PersistenceUnit(unitName='...') according to the unit needed. I was under the impression that using them with the unitName specified would allow me to use x number of PUs without problem but I still get: expected single matching bean but found two: [emf1, emf2]. Am I missing some other configuration?

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• How to save a custom cookie

  - by xRobot

  Is there a way to save a cookie that is available on other site ? For instance I have my django project on http://www.example.com and I want that django saves a cookies for a site written in PHP on http://site.Idontknow.com . Is this possible ?

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• How to manipulate width of multiple images in javascript

  - by Axesh Ajmera

  I have multiple images and i wnat to place all of them in a single line.How should i manipulate the width of images such that the sum of width of al images does not exceed the browser's width.??

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• Is there a preferred method of including the source code(s) of other software you've used in your ap

  - by Adam S

  I've used a few F/OSS libraries in my commercial application. As per their licenses, I am obligated to include their source codes along with my VS2008 application. This is my first time making a "real" commercial application, and I would appreciate some advice on how best to go about including their source codes. I don't want to package them as zip files alongside my installed. I still want my installer to be a single file.

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• How to get only the first row from a java.sql.ResultSet?

  - by llm

  I have a ResultSet object containing all the rows returned from an sql query. I want to be able to (in the java code, NOT force it in the SQL) to be able to take a ResultSet and transform it so that it only contains 1 (the first) row. What would be the way to acheive this? Also, is there another appropriate class (somewhere in java.sql or elsewhere) for storing just a single row rather than trimming my ResultSet? Thanks!

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• What happens when I instantiate class in Python?

  - by Konstantin

  Could you clarify some ideas behind Python classes and class instances? Consider this: class A(): name = 'A' a = A() a.name = 'B' # point 1 (instance of class A is used here) print a.name print A.name prints: B A if instead in point 1 I use class name, output is different: A.name = 'B' # point 1 (updated, class A itself is used here) prints: B B Even if classes in Python were some kind of prototype for class instances, I'd expect already created instances to remain intact, i.e. output like this: A B Can you explain what is actually going on?

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• How can I delete duplicated users in django?

  - by Catalina

  Hi guys, I need to delete duplicate users in django (by duplicate I mean two or more users with the same email). If your instance there are three records like this: id email 3 [email protected] 56 [email protected] 90 [email protected] I need to delete records 56 and 90 and leave the oldest record id - 3 Is there a way to quickly do this. Thanks :)

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• How to create thumbnails or preview for videos?

  - by Vijay

  hi i want to display thumbnails or preview panels for videos listed on my site, i want to fetch a single frame from a video (from a particular time i.e get a frame of exactly after 1 min) and display them as thumbnails as in youtube... Any help?

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• Reducing the space between sections of the UITableView.

  - by flohei

  Hi there, is there a way to reduce the space between two sections of a UITableView? There are about 15 pixel between every single section I have. I did already try to return 0 for -tableView:heightForFooterInSection: and -tableView:heightForHeaderInSection: but that doesn't change anything. Any suggestions? Thanks in advance. –f

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• HTTPS only on specific page with .htaccess

  - by JamWaffles

  Hi all I have a URL such as http://www.domain.com/index.php?p=register. I want to redirect that to use HTTPS (SSL) with .htaccess, but only on this, and a couple of other pages (the login page, etc), but not the entire site. The URLs don't point to directories, but are used to dynamically include different files. Can someone give me a pointer or an example of how to get a single page redirect to HTTPS please? Thanks, James

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• opening pdf file using php that take data from mysql

  - by Sahar

  hello, anyone can plz help me? i wanted to create pdf file using php and have done it. now i want to create pdf file that get data from mysql table.. i've searched for the sample code for long time but didnt find even a single code related to my query.. thanx in advance

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• How can the AssemblyName class be used for existing Assemblies?

  - by IbrarMumtaz

  This is another exam related question. I want to know how can I use the AssemblyName class to represent an existing assembly that already exists on disk??? I am talking about from the perspective of using the AppDomain's instance method .Load(), that takes an AssemblyName object as a parameter. I know what MSDN has to say about what the .Load() method was designed for but that aside, I still want to know how to use it !!!

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• XNA: How to convert a game to be compatible with the Xbox 360?

  - by Rosarch

  I have a C# XNA game that I'd like to test on the 360. How do I do this, in terms of what I need to do to the Visual Studio project? For instance, how can I define certain actions will only take place on an Xbox? Something like: # if XBOX // do stuff # endif

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• what is the best approach to implenting a thread timer

  - by nitroxn

  Hi, What is the best approach in using a timer. Use a System.Timer.Timer class or use a single Thread in a non-terminating loop with a Thread.Sleep statement? Thanks in advance

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