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• Hibernate: can I override an identifier generator using XML with a custom generator?

  - by Ken Liu

  I want to use a custom sequence generator in my application, but the entity is located in a domain model jar that is shared with other applications. Apparently entity annotations can be overridden in orm.xml but I can't figure out the proper XML incantation to get this to work. I can modify the annotation in the entity like this this: @GenericGenerator(name = "MYGEN", strategy = "MyCustomGenerator") @GeneratedValue(generator = "MYGEN") But I need to somehow map this to orm.xml in order to override the original annotation. Looking at the orm.xml schema here it appears that I can't even specify a generation type besides "sequence" and "table".

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• How effective are technical test(s) and is it necessary?

  - by The Elite Gentleman

  Hi everyone, I recently took a Java technical test (for a company who wanted are looking for senior java developers) and, funny enough, I only realised the technical terms of what I've been doing all along after I've written the test. I'm not too IT jargon when it comes to development but I can pretty much code and create solutions unaware that I'm using design pattern (or the specifics of that design pattern) or technology. I learned things such as JMS, Frameworks, etc. while programming at home and having to google stuff online to problems I have. Others e.g. IoC, Surrogates in Databases, etc., I have used extensively without knowing that it had a name for it. Do you think that these technical test are effective and why? What interesting questions did you find that boggled your brains out while the clock kept ticking? Seeing that IT is vastly evolving at a rapid rate, do we have to constantly be updated with new terms that comes out? Some questions I was asked : What object oriented principle is violated by this architectural mechanism for dot notation? Is indexing tables effective for range query or point query search? What is ThreadLocal and what is it used for? Method overloading vs Method overriding. What is the difference between the 2? What is dynamic binding? Now, imagine my poor head trying to understand these jargons (considering I use it almost everyday) PS The question was not a programming question, where you have a problem and write code to solve it. Rather, a thinking type question and you write answers (against the clock). Update I clearly didn't come out clearly as I should have. There are those that are technically "book smart" but with very little hands-on experience and vice versa. So, the question (in connection to what I've asked) is that are these technical test seeking "book smart" people or people with lots of hands-on experience (some who are not that well clued up with too much book-smart jargons). How effective is it then, for companies to look for developers if most of the questions are too terminology-centric? (if that's the correct term, :))

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• Any experiences using SharpDevelop to build an ASP.NET MVC app?

  - by Sosh

  I've always used VS for .NET development, but am just wondering about the alternatives around now. I'm especially interested in use for ASP.NET MVC development. I'm not bothered about any of the visual design aspects of vs, but of course love intellisense and the debugging features. So, for anyone who has tried SharpDevelop when doing ASP.NET MVC: How did you get on? What are the main disadvantages and pain points? Thanks

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• string.IsNullOrEmpty() vs string.NotNullOrEmpty()

  - by Chris S

  I'm curious if any developers use string.IsNullOrEmpty() more often with a negative than with a positive e.g. if (!string.IsNullOrEmpty()) This is how I use the method 99% of the time. What was the design decision for this?

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• JBoss Seam - order event listeners

  - by Walter White

  Hi all, I would like to order my event listeners. Is it possible to do this in JBoss Seam 2.x? I am thinking as a workaround, which is quite simple, I will just daisy chain my events: fire event A. do something on event A. a. fire event B do something on event B. Any comments with this design? Is this a good / bad practice? Thanks, Walter

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• Did anyone give these smart pointers (auto_any, scoped_any, shared_any) a test drive?

  - by Johann Gerell

  I'm investigating smart pointers with "shared" functionality for Windows CE and Mobile, where the VS 2008 tr1 std::shared_ptr cannot be used (due to linkage to a v.9 dll not present on CE, obviously, if I understand it correctly). There's a semi-old MSDN Magazine article with sources from a Microsoftie (Eric Niebler): Achieve More Reliable Resource Management with Our Custom C++ Classes. The reasoning, design and implementation of his shared_any looks solid, but I'm wondering if anyone ever actually tested the lot on any platform (not necessarily WinCe/WM)?

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• Zend Form Radio Elements, using images instead of default radio elements.

  - by Davy

  Hello, Ultimately here is my goal. Using Zend_Form I want to turn this idea http://www.sohtanaka.com/web-design/fancy-thumbnail-hover-effect-w-jquery/ into a list of radio buttons. Kind of using this concept. http://theodin.co.uk/tools/tutorials/jqueryTutorial/fancyRadio/ I know there has to be a way to do this but I can't seem to figure anything out! Any ideas? Thanks! -d

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• How do you embed XHTML into APT file when using Maven to generate a site?

  - by Clinton

  I am using maven to generate a website for a Java project, which uses APT "Almost Plain Text" as a wiki like markup. Maven takes this and turns it into XHTML. I already have a custom template/skin that I am using for the site, but the index page will have a couple of extra custom design elements that are beyond the capabilities of APT. So how can you add xhtml to the apt file so that it gets correctly embedded in the final output? Thanks.

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• Defining the context of a word - Python

  - by RadiantHex

  Hi folks, I think this is an interesting question, at least for me. I have a list of words, let's say: photo, free, search, image, css3, css, tutorials, webdesign, tutorial, google, china, censorship, politics, internet and I have a list of contexts: Programming World news Technology Web Design I need to try and match words with the appropriate context/contexts if possible. Maybe discovering word relationships in some way. Any ideas? Help would be much appreciated!

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• SQLite Modify Column

  - by Nathan

  I need to modify a column in a SQLite database but I have to do it programatically due to the database already being in production. From my research I have found that in order to do this I must do the following. Create a new table with new schema Copy data from old table to new table Drop old table Rename new table to old tables name That seems like a ridiculous amount of work for something that should be relatively easy. Is there not an easier way? All I need to do is change a constraint on a existing column and give it a default value.

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• Div : A Table Less Coding

  - by Raaj Dhanjal

  I am a web Developer. Even I do web design but I use the TABLE method for HTML, I want to learn Tableless coding (Div based). Can anybody suggest me Few Best sites for learn Div Based Coding.

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• Storing Configurations into Active Direcotry Application Mode

  - by Khurram Aziz

  I have a network devices polling and do actions kind of app; currently it keeps the configuration (which devices to poll, what kind of device, ip, login, password etc) in the database. My network administrator wants that this information is stored in some LDAP server so that he maintain single store of configuration which he himself can use in other apps/scripts etc. I am looking for some article that walks me through setting up ADAM/AD LDS for storing configuration by authoring custom schema etc and how to setup some authentication infrastructure to protect the data.

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• ALTER TABLE without locking the table?

  - by Daniel

  When doing an ALTER TABLE statement in MySQL, the whole table is read-locked for the duration of the statement. If it's a big table, that means insert or update statements could be locked for a looooong time. Is there a way to do a "hot alter", like adding a column in such a way that the table is still updatable throughout the process? Mostly I'm interested in a solution for MySQL but I'd be interested in other RDBMS if MySQL can't do it. To clarify, my purpose is simply to avoid downtime when a new feature that requires an extra table column is pushed to production. Any database schema will change over time, that's just a fact of life. I don't see why we should accept that these changes must inevitably result in downtime; that's just weak.

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• Jquery Slider control for volume

  - by Geetha

  Hi All, I want to create a slider to control the volume of the media player. How to design/create a slider using JQuery. Geetha.

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• object explorer control

  - by šljaker

  I'm writing application for code generation and I would like to use object explorer control such as the one in visual studio, so I can manually design my objects. How can I do that?

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• How to read the Web.Config file in a Custom Activity Designer in a WF4 Workflow Service

  - by Preet Sangha

  I have a WF service with a custom activity and a custom designer (WPF). I want to add a validation that will check for the presence of some value in the web.config file. At runtime I can overload void CacheMetadata(ActivityMetadata metadata) and thus I can do the validation happily there using System.Configuration.ConfigurationManager to read the config file. Since I also want to do this at design time, I was looking for a way to do this in the designer.

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• Flex DownloadProgressBar preloader override

  - by Shawn Simon

  I'm watching this video, which is pretty good http://www.gotoandlearn.com/play?id=108 It shows how to inherit from DownloadProgressBar to create a customer preloader for your flex app. The DownloadProgressBar class has an overridable getter for the property 'preloader.' Isn't this poor design? What does a property called preloader have anything to do with a class for a DownloadProgressBar?

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• Looking for Java libraries to create a report editor

  - by Julian

  I have to develop a specialised report editor in Java. The user will get a number of fields that can be layed out on a page plus some graphical elements. The resulting report design needs to be serialized into already defined database tables. Is there any software library that will help to achieve this without reinventing the wheel? I have come across Eclipse GEF and Zest, but I am not sure if this really meets my problem.

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• Scalable Ticketing / Festival Website

  - by Luke Lowrey

  I've noticed major music festivals (at least in Australia) and other events that experience a peak in traffic when tickets go on sale have huge problems keeping their websites running well. I've seen a few different techniques used to try combat this such as short sessions and virtual queues but they dont seem to have much effect. If you were to design a website to sell a lot of tickets in a short amount of time how would you handle scalability? What technologies and programming techniques would you use?

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• Unable to create index because of duplicate that doesn't exist?

  - by Alex Angas

  I'm getting an error running the following Transact-SQL command: CREATE UNIQUE NONCLUSTERED INDEX IX_TopicShortName ON DimMeasureTopic(TopicShortName) The error is: Msg 1505, Level 16, State 1, Line 1 The CREATE UNIQUE INDEX statement terminated because a duplicate key was found for the object name 'dbo.DimMeasureTopic' and the index name 'IX_TopicShortName'. The duplicate key value is (). When I run SELECT * FROM sys.indexes WHERE name = 'IX_TopicShortName' or SELECT * FROM sys.indexes WHERE object_id = OBJECT_ID(N'[dbo].[DimMeasureTopic]') the IX_TopicShortName index does not display. So there doesn't appear to be a duplicate. I have the same schema in another database and can create the index without issues there. Any ideas why it won't create here?

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• Which Database to use for CMS project in ASP.NET - SQLite or SQL server compact?

  - by srsstr

  Hello there I am working on a CMS project using ASP.Net 3.5/Visual studio 2008.This is the first week of the project and I am working on the design of the system right now. Needless to say that this is my first project of this scale and I have no idea of what I am doing. The requirements of the project ask for a light but functional CMS, one which is easy to deploy.So the question is which database to use in this scenario SQLCE or SQLite? Please Help?

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• Looking for a free xsd scheme editor

  - by Klaim

  I'm looking for a free alternative to all the XML/XSD editors around here (that are relatively expensive--at least for me). I totally fail to find one. I need it to allow me to edit xsd files to help in writting an xml-based language specification. I need it to be visual to help with the design, making it clear. Other features are less interesting for me. Any suggestion?

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• Mysql Replication

  - by ychian

  My current database design uses MyIsam mainly as the storage engine, I wonder if its possible to split some of the tables into MyIsam and some into Innodb in the same database. Reason of switching some of the tables to Innodb is because i need row-based locking which Innodb offers. I am not too sure whether this would have any effect on replication?

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• Changing elements in master page from content page in vb.net

  - by ferrer

  i have a page called a1.aspx, with the Masterpagefile = a1_master.master. Now the master page has its own divs and images for design purposes. I want a way where when i load a1.aspx, certain chosen 's and images should be hidden (visible=false). how can i do this? how can i change the visibility of a div or an image in the master page from the content page?

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• How do you handle descriptive database table names and their effect on foreign key names?

  - by Carvell Fenton

  Hello, I am working on a database schema, and am trying to make some decisions about table names. I like at least somewhat descriptive names, but then when I use suggested foreign key naming conventions, the result seems to get ridiculous. Consider this example: Suppose I have table session_subject_mark_item_info And it has a foreign key that references sessionSubjectID in the session_subjects table. Now when I create the foreign key name based on fk_[referencing_table]__[referenced_table]_[field_name] I end up with this maddness: fk_session_subject_mark_item_info__session_subjects_sessionSubjectID Would this type of a foreign key name cause me problems down the road, or is it quite common to see this? Also, how do the more experienced database designers out there handle the conflict between descriptive naming for readability vs. the long names that result? I am using MySQL and MySQL Workbench if that makes any difference. Thanks!

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