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  • mysql joins - how to find all children that belongs to ALL parents

    - by kimsia
    I have three mysql tables items the columns are id, title items_in_categories the columns are id, item_id, category_id categories the columns are id, title I want to find all the items that belong to ALL the stated categories. Not any one category, but ALL categories Eg, if I want to search all the items that belongs to category id 3 and 5 I would like to use as simple a way as possible. I have tried AND and a nested NOT EXISTS as stated in the mysql manual. Nothing worked.

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  • SQL query multi table selection

    - by nemiss
    I have 3 tables, - Section table that defines some general item sections. - Category table - has a "section" column (foreign key). - Product table - has a "category" column (foreign key). I want to get all products that belong to X section. How can I do it? select from select?

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  • How to achieve an eagerly loaded, filtered child collection with the NHibernate criteria API

    - by vakman
    Is it possible to use the criteria api to load a set of parent objects along with a filtered, eagerly loaded set of child objects? I'm trying to query a list of categories and at the same time load the categories products that start with the letter M. The query below gives me the results I want but the Products are not eagerly loaded, that is NHibernate performs additional queries when I enumerate the Product collection: var categoriesWithProducts = session.CreateCriteria<Category>() .SetFetchMode("Products", FetchMode.Eager) .CreateCriteria("Products") .Add(Expression.Like("Name", "M%")) .List<Category>(); What am I missing here?

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  • Understand link redirect

    - by Andrew
    wordpress placed into category 'blog' there are no subcategory 'contact' into category 'blog', neither .htaccess with redirect directives. How I can find what script does executed? and I VERY want understand how server find it. http://domain.com/freeaccess/blog/contact Thank you!

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  • mod_rewrite to make a short URL

    - by Chris Stewart
    I have a url like: http://skepticalgamer.com/category/slam-the-controller I'd like to strip out "category" from the URL. So I'd want: http://skepticalgamer.com/slam-the-controller to act as if it were the original URL above. Is that something that can be done with mod_rewrite?

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  • Update one list from another

    - by lacqui
    I have two multi-select lists in HTML - one of categories, and another of items. What I want is that, when an item selected in the "category" list, everything in the "items" list from that category is also selected. For example, if "Categories" contains "Animal", "Mineral", and "Vegetable", and "Items" contains "Dog", "Cat", "Monkey", "Diamond", "Granite", "Carrot", "Tomato": If "Animal" is selected in one list, "Dog", "Cat", and "Monkey" should be selected; any other selections should remain as they are. I'm using a Symfony PHP backend on the server, if that makes any difference

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  • How to convert SQL Statement with TOP, COUNT and GROUP BY to return an object list with LINQ

    - by Junior Mayhé
    Hello guys does anyone know how to convert this SQL statement to a LINQ to a List? SELECT TOP(5) COUNT(CategoryId), CategoryName FROM Tickets GROUP BY CategoryName The result would be something like public static List<Categories> List() { MyEntities db = new MyEntities(); /* here it should return a list o Category type */; return db.Category.GroupBy(...).OrderBy(...); }

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  • How do I map to a parent or child in the same table with NHibernate?

    - by adolfojp
    Lets suppose that I have a Category table with a column that holds the id of a parent or child category from the same table. This design would allow me to have unlimited levels of Categories, or unlimited levels in a thread, for example. How can I map this relationship with NHibernate? Are there any disadvantages or warnings that I should take into consideration when doing this?

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  • News Portals and mysql queries

    - by jasmine
    Consider a news portal like cnn. There is 8 categories. Is there 8 query in every page loading? For eg SELECT title FROM category where cID = 1 SELECT title FROM category where cID = 2 ................... And for sites with high traffic, would be memcache a good solution? Thanks in advance

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  • Hibernate reverse engineering

    - by EugeneP
    I have a structure where the main table is USER, other tables include CATEGORY (contains user_id). What I got after the standard reverse engineering procedure was: the class User contained a collection of categories, the class Category didn't contain the foreign key (user_id) but it did contain the User object. Why did it not contain the foreign key as a class property? And how do I join these two tables in HQL without that glue? HQL - please explain this part.

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  • Game doesn't Quit properly

    - by W.K.S
    I have an app that so far consists of two Activities: The Main Menu Activity. The Game Activity The Main Menu Activity contains a button that starts the Game Activity with the following code: public void onClick(View clickedButton) { switch(clickedButton.getId()) { case R.id.buttonPlay: Intent i = new Intent("apple.banana.BouncingBallActivity"); startActivity(i); break; } When the user is done with the Game Activity, he presses the back button. This calls the onPause() method first, which pauses the animation thread of the game. It then calls the onStop() which calls finish() on the activity altogether. The user is returned to the Main Menu activity. The code is outlined below: public class BouncingBallActivity extends Activity{ private BouncingBallView bouncingBallView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); bouncingBallView = new BouncingBallView(this); bouncingBallView.resume(); setContentView(bouncingBallView); } @Override protected void onPause() { super.onPause(); bouncingBallView.pause(); } @Override protected void onResume() { super.onResume(); bouncingBallView.resume(); } @Override protected void onStop() { super.onStop(); this.finish(); } } The problem is that this only works if I launch the application from Eclipse. When I click on the app icon, the game starts from the Game Activity. The main menu activity does not appear. I am not clear about why this happens. It could be something to do with the manifest. I've pasted the relevant portions below: <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <activity android:name=".BouncingBallActivity" android:label="@string/app_name" android:screenOrientation="landscape" > <intent-filter> <action android:name="apple.banana.BouncingBallActivity" /> <category android:name="android.intent.category.DEFAULT" /> </intent-filter> </activity> <activity android:name=".MainMenu" android:label="@string/app_name" android:screenOrientation="portrait" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> I'd really appreciate any help with this. Thanks.

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  • url rewriting in php

    - by HIma
    Hai I have one more doubt in apache mod_rewrite. I want to rewrite the url mydomain/index.php?category=1&id=1 To mydomain/index/category/1/id/1 How I write rule in .htaccess And what is the link that i have to give inside the a tag Please give me a solution..

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  • Dynamic class_name for has_many relations

    - by vooD
    I'm trying to make has_many relation with dynamic class_name attribute class Category < ActiveRecord::Base has_many :ads, :class_name => ( lambda { return self.item_type } ) end or class Category < ActiveRecord::Base has_many :ads, :class_name => self.item_type end But i got errors: can't convert Proc into String or undefined method `item_type' for #<Class:0xb62c6c88> Thank you for any help!

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  • The least amount of code possible for this MySQL query?

    - by ddan
    I have a MySQL query that: gets data from three tables linked by unique id's. counts the number of games played in each category, from each user and counts the number of games each user has played that fall under the "fps" category It seems to me that this code could be a lot smaller. How would I go about making this query smaller. http://sqlfiddle.com/#!2/6d211/1 Any help is appreciated even if you just give me links to check out.

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  • mySQL JOIN wont return results with 0 count

    - by MPC
    SELECT categories.*, COUNT(categoryID) AS kritCount FROM categories AS categories LEFT JOIN krits ON categories.id = categoryID WHERE (krits.approved = '1') GROUP BY categories.id So this works great except that it does not return a category that has a 0 count of krits in the category. It will if I remove the WHERE statement but I need the WHERE to only select the krits where the field approved = 1

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  • Trying to make models in Kohana, relations problem.

    - by Asaf
    I have a table of Hits, Articles and Categories Now, a Hit belongs_to an Article/Category (depends on where it was done). so I have a column on Hits table with the name 'parenttype' That tells me 'Article' or 'Category'. I wrote in the Hit model (extends ORM) protected $_belongs_to= array( 'page' => array('model'=> $this->parenttype) ); Now it complains about $this-parenttype not being expected?

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  • Downside to including headers in every source file (Objective-C)

    - by Michael Waterfall
    I'm currently including my AppDelegate.h and all of my category headers into every one of my source files using the MyApp_Prefix.pch prefix header, instead of manually #importing them only where they are used. The category methods and lots of compiler #define's in my app delegate are used in lots of places in my code. Is there any down side to this? Is it just that compilation will take longer?

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  • Bigcommerce Templates file missing

    - by ime
    I am developing a template for bigcommerce site, where i want to show category list and some hard code links in the place of Page menu. Now what i do, just place this %%Panel.SideCategoryList%% in the upper navigation area. Which shows category list right. But the problem is that i didn't find this %%SNIPPET_SideCategoryList%% file. (In snippets folder exist a file with this name, but that file doesn't work even if i remove all contents of that file.)

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  • Exchange 2003 mail non-delivery (NDR), spam activity? events 7002 & 7004

    - by HighTechGeek
    Windows Server 2003 Small Business Server SP2 Exchange Version 6.5 (Build 7638.2: Service Pack 2) This network has been neglected and has been having email problems for years and was on many blacklists. I was called in after the server eventually crashed... I got the server back up and running, but email problems persist. Outgoing mail delivery is sporadic. Sometimes the mail goes through, sometimes a delayed delivery report is generated after a day or more, and sometimes it seems to go through, but the recipient never receives it. Not sure if spammers are successfully using the server as a relay (see event entries below after turning on maximum SMTP logging)... User PCs infected with viruses and server was blacklisted on many sites (I used mxtoolbox.com) I have cleaned all the PCs and changed all passwords (including administrator) I have requested removal from all of the blacklists - most have removed the listing, some take more time. I have setup rDNS pointer records with the ISP (Comcast) - that was one reason for some of the blacklistings. I have tested that it's not an open relay using telnet as described here: www.amset.info/exchange/smtp-openrelay.asp I followed the advise of a Spamhaus & Microsoft article to enable maximum SMTP logging. http://www.spamhaus.org/faq/answers.lasso?section=isp%20spam%20issues#320 which directed me to Microsoft KB article 895853, specifically, the part 2/3 down titled: "If mail relay occurs from an account on an Exchange computer that is not configured as an open relay" . The Application Event Log is filling with this type of activity (Event ID 7002, 7002 & 3018 errors): Event Type: Error Event Source: MSExchangeTransport Event Category: SMTP Protocol Event ID: 7004 Date: 1/18/2011 Time: 7:33:29 AM User: N/A Computer: SERVER Description: This is an SMTP protocol error log for virtual server ID 1, connection #621. The remote host "212.52.84.180", responded to the SMTP command "rcpt" with "550 #5.1.0 Address rejected [email protected] ". The full command sent was "RCPT TO: ". This will probably cause the connection to fail. and this: Event Type: Warning Event Source: MSExchangeTransport Event Category: SMTP Protocol Event ID: 7002 Date: 1/18/2011 Time: 7:33:29 AM User: N/A Computer: SERVER Description: This is an SMTP protocol warning log for virtual server ID 1, connection #620. The remote host "212.52.84.170", responded to the SMTP command "rcpt" with "452 Too many recipients received this hour ". The full command sent was "RCPT TO: ". This may cause the connection to fail. or a variant of: Event Type: Warning Event Source: MSExchangeTransport Event Category: SMTP Protocol Event ID: 7002 Date: 1/18/2011 Time: 8:39:21 AM User: N/A Computer: SERVER Description: This is an SMTP protocol warning log for virtual server ID 1, connection #661. The remote host "82.57.200.133", responded to the SMTP command "rcpt" with "421 Service not available - too busy ". The full command sent was "RCPT TO: ". This may cause the connection to fail. also Event Type: Error Event Source: MSExchangeTransport Event Category: NDR Event ID: 3018 Date: 1/18/2011 Time: 9:49:37 AM User: N/A Computer: SERVER Description: A non-delivery report with a status code of 5.4.0 was generated for recipient rfc822;[email protected] (Message-ID ). Causes: This message indicates a DNS problem or an IP address configuration problem Solution: Check the DNS using nslookup or dnsq. Verify the IP address is in IPv4 literal format. Data: 0000: ef 02 04 c0 ï..À Any guidance and/or suggestions and/or tests to perform would be greatly appreciated.

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  • CodePlex Daily Summary for Tuesday, March 16, 2010

    CodePlex Daily Summary for Tuesday, March 16, 2010New ProjectsAAPL-MySQL (a MySql implementation of the Agile ADO.Net Persistence Layer): Using the code conventions and code of the Agile ADO.Net Persistence Layer to build a MySql implementationAddress Book: Address Book is simple and easy to use application for storing and editing contacts. It has many features like search and grouping. It's developed ...Airplanes: Airplanes GameAJAX Fax document viewer: The AJAX Fax document viewer is an ASP.net 4.0 project which uses a Seadragon control to display Tiff/Tif files inside the browser. Since it's base...AxeFrog Core: This project contains the foundational code used in several other projects.Bolão: O objetivo deste projeto é estimular a troca de informações e experiências sobre arquitetura e desenvolvimento de software na prática, através do d...Caramel Engine: This is designed to be a logic engine for developing a wide variety of games. To include card logic, dice logic, territories, players, and even man...DotNetNuke® Skin BrandWorks: A DotNetNuke Design Challenge skin package submitted to the "Modern Business" category by M Perakakis & M Siganou (e-bilab). A very minimal look sk...DotNetNuke® Skin Reasonable: A DotNetNuke Design Challenge skin package submitted to the "Personal" category by Ralph Williams of Architech Solutions. A clean, classy, professi...DotNetNuke® Skin Seasons: A DotNetNuke Design Challenge skin package submitted to the "Personal" category by Atul Handa and Kevin McCusker of Mercer. This skin is a generic ...File Eraser: File Eraser make it esasier for IT Administrator or Advanced Users to administer files and eliminate long addresses, even UNC. It's developed in VB...GreenEyes: My project for IT personalHulu Launcher: Hulu Launcher is a simple Windows Media Center add-in that attempts to launch Hulu Desktop and manage the windows as seamlessly as possible.Imenik: Imenik makes it easier for users to organise their contacts!KharaPOS: KharaPOS is an Exemplar application for Silverlight 4, WCF RIA Services and .NET Framework 4.Mantas Cryptography: Pequena biblioteca de criptografia com suporte aos algorítmos DES, RC2, Rexor e TripleDES. Gera hashes HMAC-MD5, HMAC-RIPEMD160, HMAC-SHA (SHA1, S...MapWindow3D: A C# DirectX library that extends the MapWindow 6.0 geospatial software library by adding an external map. The map supports rotation and tilting i...Microsoft Silverlight Analytics Framework: Extensible Web Analytics Framework for Microsoft Silverlight Applications.Moq Examples: Unit tests demonstrating Moq features.Ncqrs: Framework that helps you to create Command-Query Responsibility Segregation based applications easily.NoLedge - Notetaking and knowledge database: NoLedge is an easy knowledge gathering and notetaking freeware with a simple interface. You can link a note with different titles and can retrieve ...Numina Application Framework: The framework is a set of tools that help facilitate authentication, authorization, and access control. It is much more than a SSO. It is a central...OData SDK for PHP: OData SDK for PHP is a library to facilitate the connection with OData Services.patterns & practices - Windows Azure Guidance: p&p site for Windows Azure related guidance.projecteuler.net: Exploring projecteuler.net using F#ResumeTracker: Small and easy to use tool that helps to track your job applications. To report bugs or for suggestions please email kirunchik@gmail.com.Selection Maker: Have you ever create a collection of music files? Imagine you just want to pick best of them by your choice. you should go to several folder,play...ShureValidation: Multilingual model validation library. Supports fluent validations, attribute validations and own custom validations.Simple Phonebook: Simple phonebook allows you to store contacts. It also allows you to export the contacts to .txt or .csv. This application is written in C#, but it...SoftUpd: A usefull library which provides an Update feature to any .Net software.sTASKedit: This program can modify and export Perfect World tasks.data files...Tigie: Tigie is a simple CMS system for basic website. It's simple, easy to customize. you'll have a very basic cms to start with and expand for it. All c...toapp: ap hwUltiLogger: UltiLogger is a fast, lightweight logging library programmed in C#. It is meant as a fast, easy, and efficient way for developers to access a relia...Unnme: UnnmeVisual Studio 2008 NUnit snippets: A simple set of useful NUnit snippets, for Visual studio 2008.webdama: italian checkers game c#XBrowser - Headless Browser for .Net: XBrowser is a "headless" web browser written for .Net applications using C#. It is designed to allow automated, remote controlled and test-based br...XML Integrator: XML integration, collaborative toolNew ReleasesAddress Book: Address Book: Address BookAddress Book: Address Book - Source: Address Book source code.AJAX Fax document viewer: AJAXTiff_Source 1.0: Source project for the AJAX Tiff viewer v1.0. Written in Visual Studio 2010 RC using ASP.net 4.0ASP.Net Routing Configuration: mal.Web.Routing v1.0.0.0: mal.Web.Routing v1.0.0.0ASP.NET Wiki Control: Release 1.0: Includes VS2010 Solution and Project files but targets the 3.5 framework so can still be used with VS2008 if new project files are created.BingPaper: Beta: BingPaper Beta Release This Beta release contains quite a few improvements: This Beta release contains a complate overhaul of the replacement tok...Bolão: teste: testeDotNetNuke® Skin Reasonable: Reasonable Package 1.0.0: A DotNetNuke Design Challenge skin package submitted to the "Personal" category by Ralph Williams of Architech Solutions. A clean, classy, professi...DotNetNuke® Skin Seasons: Seasons Package 1.0.0: A DotNetNuke Design Challenge skin package submitted to the "Personal" category by Atul Handa and Kevin McCusker of Mercer. This skin is a generic ...dylan.NET: dylan.NET v. 9.2: In TFS Serverdylan.NET Apps: dylan.NET Apps v. 1.1: First version of dnu.dll together with v.9.2 of dylan.NETFamily Tree Analyzer: Version 1.1.0.0: Version 1.1.0.0 Census report now shows in bold those individuals you KNOW to be alive at the date of the census. Direct Ancestors on census repor...GLB Virtual Player Builder: 0.4.1: Minor change to reset non-major/minor attr to 8.Hulu Launcher: HuluLauncher Release 1.0.1.1: HuluLauncher Release 1.0.1.1 is the initial, barely-tested release of this Windows Media Center add-in. It should work in Vista Media Center and 7 ...Imenik: Imenik: Imenik is now available!jQuery Library for SharePoint Web Services: SPServices 0.5.3: NOTE: While I work on new releases, I post alpha versions. Usually the alpha versions are here to address a particular need. I DO NOT recommend usi...KeelKit: KeelKit 1.0.3800: 更新内容如下: 优化了DBHelper的一些机制 修正一些BUG 支持Mysql PHP代理,使得能通过Web代理的方式远程访问数据库服务器 添加Model实例化方法,支持所有非自动计算字段的参数实例化、支持所有非空字段实例化 添加Model中的常量,使用这些常量可以获得表名称。 添加了自...Managed Extensibility Framework (MEF) Contrib: MefContrib 0.9.0.0: Updated to MEF Preview 9 Moved MefContrib.Extensions.Generics to MefContrib.Hosting.Generics Moved MefContrib.Extensions.Generics.Tests to MefC...MooiNooi MVC2LINQ2SQL Web Databinder: MooiNooi MVC2LINQ2SQL Web Databinder v0.1.1: Repaired a problem with collections... only index number under 10 were allowed... Please send me your comments and rate the project. Sorry.Mouse Gestures for .NET: Mouse Gestures 1.0: Improved version of the component + sample application. Version 1.0 is not backward compatible.MoviesForMyBlog: MoviesForMyBlog V1.0: This is version 1.0Nito.KitchenSink: Version 1: The first release of Nito.KitchenSink, which uses Nito.Linq 0.1. Please report any issues via the Issue Tracker.Nito.LINQ: Beta (v0.1): This is the first official public release of Nito.Linq. This release only supports .NET 3.5 SP1 with the Microsoft Rx libraries. The documentation...Nito.LINQ: Beta (v0.2): Added ListSource.Generate overloads that take a delegate for counting the list elements.OData SDK for PHP: OData SDK for PHP: This is an updated version of the ADO.NET Data Services toolkit for PHP. It includes full support for OData Protocol V2.0 specification, better pro...Orchard Project: Orchard Latest Build (0.1.2010.0312): This is a technical preview release of Orchard. Our intent with this release is to demonstrate representative experiences for our audiences (end-us...patterns & practices – Enterprise Library: Enterprise Library 5.0 - Beta2: This is a preliminary release of the code and documentation that may potentially be incomplete, and may change prior to the final release of Enterp...patterns & practices - Unity: Unity 2.0 - Beta2: This is a preliminary release of the code and documentation that may potentially be incomplete, and may change prior to the final release of Unity ...patterns & practices - Windows Azure Guidance: Code drop - 1: This initial version is the before the cloud baseline application, so you won’t find anything related to Windows Azure here. Next iteration, we'l...Rawr: Rawr 2.3.12: - First, a note about Rawr3. Rawr3 has been in development for quite a while now, and we know that everyone's eager to get it. It's been held back ...ResumeTracker: Resume Tracker v1.0: First release.Selection Maker: Selection Maker 1.0: This is just the first release of this programSevenZipSharp: SevenZipSharp 0.61: Added: Windows Mobile support bool Check() method for Extractor to test archives integrity FileExtractionFinished now returns FileInfoEventArgs...Silverlight 3.0 Advanced ToolTipService: Advanced ToolTipService v2.0.1: This release is compiled against the Silverlight 3.0 runtime. A demonstration on how to set the ToolTip content to a property of the DataContext o...Silverlight Flow Layouts library: SL and WPF Flow Layouts library March 2010: This release indtroduces some bug fixes, performance improvements, Silverlight 4 RC and WPF 4.0 RC support. Flow Layouts Library is a control libra...Simple Phonebook: SimplePhonebook Visual Studio 2010 Solution: Ovo je cijeli projekt u kojem se nalaze svi source fileovi koje sam koristio u izradi ove aplikacije. Za pokretanje je potreban Visual Studio 2010....Simple Phonebook: SimplePhonebook.rar: U ovoj .rar datoteci nalaze se izvršni fileovi. _ In this .rar file you can find .exe file needed for executing the application.SLARToolkit - Silverlight Augmented Reality Toolkit: SLARToolkit 1.0.1.0: Updated to Silverlight 4 Release Candidate. Introduces the new GenericMarkerDetector which uses the IXrgbReader interface. See the Marker Detecto...sPWadmin: pwAdmin v1.0: Fixed: Templates can now be saved server restart persistant (wait at least 60 seconds between saving and restarting)SQL Director for Dependencies & Indexes: SDD CTP 1.0: SQL Director for Dependencies allows you to view dependencies between tables, views, function, stored procedures and jobs. Newest Testing build, f...SqlCeViewer: SeasonStar Database Management 0.7.0.2: Update the user interface to help user understand clearly how to use .UltiLogger: Initial alpha release: Important! This is not a feature-complete release! It contains the logging priorities, and an interface for building logging systems from. THERE IS...Visual Studio 2008 NUnit snippets: Version 1.0: First stable release.Zeta Resource Editor: Source Code Release 2010-03-16: New source code. Binary setup is also available.Most Popular ProjectsMetaSharpWBFS ManagerRawrAJAX Control ToolkitMicrosoft SQL Server Product Samples: DatabaseSilverlight ToolkitASP.NET Ajax LibraryWindows Presentation Foundation (WPF)ASP.NETLiveUpload to FacebookMost Active ProjectsLINQ to TwitterOData SDK for PHPRawrN2 CMSpatterns & practices – Enterprise LibraryDirectQBlogEngine.NETMapWindow6SharePoint Team-MailerNB_Store - Free DotNetNuke Ecommerce Catalog Module

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  • Announcing Entity Framework Code-First (CTP5 release)

    - by ScottGu
    This week the data team released the CTP5 build of the new Entity Framework Code-First library.  EF Code-First enables a pretty sweet code-centric development workflow for working with data.  It enables you to: Develop without ever having to open a designer or define an XML mapping file Define model objects by simply writing “plain old classes” with no base classes required Use a “convention over configuration” approach that enables database persistence without explicitly configuring anything Optionally override the convention-based persistence and use a fluent code API to fully customize the persistence mapping I’m a big fan of the EF Code-First approach, and wrote several blog posts about it this summer: Code-First Development with Entity Framework 4 (July 16th) EF Code-First: Custom Database Schema Mapping (July 23rd) Using EF Code-First with an Existing Database (August 3rd) Today’s new CTP5 release delivers several nice improvements over the CTP4 build, and will be the last preview build of Code First before the final release of it.  We will ship the final EF Code First release in the first quarter of next year (Q1 of 2011).  It works with all .NET application types (including both ASP.NET Web Forms and ASP.NET MVC projects). Installing EF Code First You can install and use EF Code First CTP5 using one of two ways: Approach 1) By downloading and running a setup program.  Once installed you can reference the EntityFramework.dll assembly it provides within your projects.      or: Approach 2) By using the NuGet Package Manager within Visual Studio to download and install EF Code First within a project.  To do this, simply bring up the NuGet Package Manager Console within Visual Studio (View->Other Windows->Package Manager Console) and type “Install-Package EFCodeFirst”: Typing “Install-Package EFCodeFirst” within the Package Manager Console will cause NuGet to download the EF Code First package, and add it to your current project: Doing this will automatically add a reference to the EntityFramework.dll assembly to your project:   NuGet enables you to have EF Code First setup and ready to use within seconds.  When the final release of EF Code First ships you’ll also be able to just type “Update-Package EFCodeFirst” to update your existing projects to use the final release. EF Code First Assembly and Namespace The CTP5 release of EF Code First has an updated assembly name, and new .NET namespace: Assembly Name: EntityFramework.dll Namespace: System.Data.Entity These names match what we plan to use for the final release of the library. Nice New CTP5 Improvements The new CTP5 release of EF Code First contains a bunch of nice improvements and refinements. Some of the highlights include: Better support for Existing Databases Built-in Model-Level Validation and DataAnnotation Support Fluent API Improvements Pluggable Conventions Support New Change Tracking API Improved Concurrency Conflict Resolution Raw SQL Query/Command Support The rest of this blog post contains some more details about a few of the above changes. Better Support for Existing Databases EF Code First makes it really easy to create model layers that work against existing databases.  CTP5 includes some refinements that further streamline the developer workflow for this scenario. Below are the steps to use EF Code First to create a model layer for the Northwind sample database: Step 1: Create Model Classes and a DbContext class Below is all of the code necessary to implement a simple model layer using EF Code First that goes against the Northwind database: EF Code First enables you to use “POCO” – Plain Old CLR Objects – to represent entities within a database.  This means that you do not need to derive model classes from a base class, nor implement any interfaces or data persistence attributes on them.  This enables the model classes to be kept clean, easily testable, and “persistence ignorant”.  The Product and Category classes above are examples of POCO model classes. EF Code First enables you to easily connect your POCO model classes to a database by creating a “DbContext” class that exposes public properties that map to the tables within a database.  The Northwind class above illustrates how this can be done.  It is mapping our Product and Category classes to the “Products” and “Categories” tables within the database.  The properties within the Product and Category classes in turn map to the columns within the Products and Categories tables – and each instance of a Product/Category object maps to a row within the tables. The above code is all of the code required to create our model and data access layer!  Previous CTPs of EF Code First required an additional step to work against existing databases (a call to Database.Initializer<Northwind>(null) to tell EF Code First to not create the database) – this step is no longer required with the CTP5 release.  Step 2: Configure the Database Connection String We’ve written all of the code we need to write to define our model layer.  Our last step before we use it will be to setup a connection-string that connects it with our database.  To do this we’ll add a “Northwind” connection-string to our web.config file (or App.Config for client apps) like so:   <connectionStrings>          <add name="Northwind"          connectionString="data source=.\SQLEXPRESS;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\northwind.mdf;User Instance=true"          providerName="System.Data.SqlClient" />   </connectionStrings> EF “code first” uses a convention where DbContext classes by default look for a connection-string that has the same name as the context class.  Because our DbContext class is called “Northwind” it by default looks for a “Northwind” connection-string to use.  Above our Northwind connection-string is configured to use a local SQL Express database (stored within the \App_Data directory of our project).  You can alternatively point it at a remote SQL Server. Step 3: Using our Northwind Model Layer We can now easily query and update our database using the strongly-typed model layer we just built with EF Code First. The code example below demonstrates how to use LINQ to query for products within a specific product category.  This query returns back a sequence of strongly-typed Product objects that match the search criteria: The code example below demonstrates how we can retrieve a specific Product object, update two of its properties, and then save the changes back to the database: EF Code First handles all of the change-tracking and data persistence work for us, and allows us to focus on our application and business logic as opposed to having to worry about data access plumbing. Built-in Model Validation EF Code First allows you to use any validation approach you want when implementing business rules with your model layer.  This enables a great deal of flexibility and power. Starting with this week’s CTP5 release, EF Code First also now includes built-in support for both the DataAnnotation and IValidatorObject validation support built-into .NET 4.  This enables you to easily implement validation rules on your models, and have these rules automatically be enforced by EF Code First whenever you save your model layer.  It provides a very convenient “out of the box” way to enable validation within your applications. Applying DataAnnotations to our Northwind Model The code example below demonstrates how we could add some declarative validation rules to two of the properties of our “Product” model: We are using the [Required] and [Range] attributes above.  These validation attributes live within the System.ComponentModel.DataAnnotations namespace that is built-into .NET 4, and can be used independently of EF.  The error messages specified on them can either be explicitly defined (like above) – or retrieved from resource files (which makes localizing applications easy). Validation Enforcement on SaveChanges() EF Code-First (starting with CTP5) now automatically applies and enforces DataAnnotation rules when a model object is updated or saved.  You do not need to write any code to enforce this – this support is now enabled by default.  This new support means that the below code – which violates our above rules – will automatically throw an exception when we call the “SaveChanges()” method on our Northwind DbContext: The DbEntityValidationException that is raised when the SaveChanges() method is invoked contains a “EntityValidationErrors” property that you can use to retrieve the list of all validation errors that occurred when the model was trying to save.  This enables you to easily guide the user on how to fix them.  Note that EF Code-First will abort the entire transaction of changes if a validation rule is violated – ensuring that our database is always kept in a valid, consistent state. EF Code First’s validation enforcement works both for the built-in .NET DataAnnotation attributes (like Required, Range, RegularExpression, StringLength, etc), as well as for any custom validation rule you create by sub-classing the System.ComponentModel.DataAnnotations.ValidationAttribute base class. UI Validation Support A lot of our UI frameworks in .NET also provide support for DataAnnotation-based validation rules. For example, ASP.NET MVC, ASP.NET Dynamic Data, and Silverlight (via WCF RIA Services) all provide support for displaying client-side validation UI that honor the DataAnnotation rules applied to model objects. The screen-shot below demonstrates how using the default “Add-View” scaffold template within an ASP.NET MVC 3 application will cause appropriate validation error messages to be displayed if appropriate values are not provided: ASP.NET MVC 3 supports both client-side and server-side enforcement of these validation rules.  The error messages displayed are automatically picked up from the declarative validation attributes – eliminating the need for you to write any custom code to display them. Keeping things DRY The “DRY Principle” stands for “Do Not Repeat Yourself”, and is a best practice that recommends that you avoid duplicating logic/configuration/code in multiple places across your application, and instead specify it only once and have it apply everywhere. EF Code First CTP5 now enables you to apply declarative DataAnnotation validations on your model classes (and specify them only once) and then have the validation logic be enforced (and corresponding error messages displayed) across all applications scenarios – including within controllers, views, client-side scripts, and for any custom code that updates and manipulates model classes. This makes it much easier to build good applications with clean code, and to build applications that can rapidly iterate and evolve. Other EF Code First Improvements New to CTP5 EF Code First CTP5 includes a bunch of other improvements as well.  Below are a few short descriptions of some of them: Fluent API Improvements EF Code First allows you to override an “OnModelCreating()” method on the DbContext class to further refine/override the schema mapping rules used to map model classes to underlying database schema.  CTP5 includes some refinements to the ModelBuilder class that is passed to this method which can make defining mapping rules cleaner and more concise.  The ADO.NET Team blogged some samples of how to do this here. Pluggable Conventions Support EF Code First CTP5 provides new support that allows you to override the “default conventions” that EF Code First honors, and optionally replace them with your own set of conventions. New Change Tracking API EF Code First CTP5 exposes a new set of change tracking information that enables you to access Original, Current & Stored values, and State (e.g. Added, Unchanged, Modified, Deleted).  This support is useful in a variety of scenarios. Improved Concurrency Conflict Resolution EF Code First CTP5 provides better exception messages that allow access to the affected object instance and the ability to resolve conflicts using current, original and database values.  Raw SQL Query/Command Support EF Code First CTP5 now allows raw SQL queries and commands (including SPROCs) to be executed via the SqlQuery and SqlCommand methods exposed off of the DbContext.Database property.  The results of these method calls can be materialized into object instances that can be optionally change-tracked by the DbContext.  This is useful for a variety of advanced scenarios. Full Data Annotations Support EF Code First CTP5 now supports all standard DataAnnotations within .NET, and can use them both to perform validation as well as to automatically create the appropriate database schema when EF Code First is used in a database creation scenario.  Summary EF Code First provides an elegant and powerful way to work with data.  I really like it because it is extremely clean and supports best practices, while also enabling solutions to be implemented very, very rapidly.  The code-only approach of the library means that model layers end up being flexible and easy to customize. This week’s CTP5 release further refines EF Code First and helps ensure that it will be really sweet when it ships early next year.  I recommend using NuGet to install and give it a try today.  I think you’ll be pleasantly surprised by how awesome it is. Hope this helps, Scott

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  • Building The Right SharePoint Team For Your Organization

    - by Mark Rackley
    I see the question posted fairly often asking what kind SharePoint team an organization should have. How many people do I need? What roles do I need to fill? What is best for my organization? Well, just like every other answer in SharePoint, the correct answer is “it depends”. Do you ever get sick of hearing that??? I know I do… So, let me give you my thoughts and opinions based upon my experience and what I’ve seen and let you come to your own conclusions. What are the possible SharePoint roles? I guess the first thing you need to understand are the different roles that exist in SharePoint (and their are LOTS). Remember, SharePoint is a massive beast and you will NOT find one person who can do it all. If you are hoping to find that person you will be sorely disappointed. For the most part this is true in SharePoint 2007 and 2010. However, generally things are improved in 2010 and easier for junior individuals to grasp. SharePoint Administrator The absolutely positively only role that you should not be without no matter the size of your organization or SharePoint deployment is a SharePoint administrator. These guys are essential to keeping things running and figuring out what’s wrong when things aren’t running well. These unsung heroes do more before 10 am than I do all day. The bad thing is, when these guys are awesome, you don’t even know they exist because everything is running so smoothly. You should definitely invest some time and money here to make sure you have some competent if not rockstar help. You need an admin who truly loves SharePoint and will go that extra mile when necessary. Let me give you a real world example of what I’m talking about: We have a rockstar admin… and I’m sure she’s sick of my throwing her name around so she’ll just have to live with remaining anonymous in this post… sorry Lori… Anyway! A couple of weeks ago our Server teams came to us and said Hi Lori, I’m finalizing the MOSS servers and doing updates that require a restart; can I restart them? Seems like a harmless request from your server team does it not? Sure, go ahead and apply the patches and reboot during our scheduled maintenance window. No problem? right? Sounded fair to me… but no…. not to our fearless SharePoint admin… I need a complete list of patches that will be applied. There is an update that is out there that will break SharePoint… KB973917 is the patch that has been shown to cause issues. What? You mean Microsoft released a patch that would actually adversely affect SharePoint? If we did NOT have a rockstar admin, our server team would have applied these patches and then when some problem occurred in SharePoint we’d have to go through the fun task of tracking down exactly what caused the issue and resolve it. How much time would that have taken? If you have a junior SharePoint admin or an admin who’s not out there staying on top of what’s going on you could have spent days tracking down something so simple as applying a patch you should not have applied. I will even go as far to say the only SharePoint rockstar you NEED in your organization is a SharePoint admin. You can always outsource really complicated development projects or bring in a rockstar contractor every now and then to make sure you aren’t way off track in other areas. For your day-to-day sanity and to keep SharePoint running smoothly, you need an awesome Admin. Some rockstars in this category are: Ben Curry, Mike Watson, Joel Oleson, Todd Klindt, Shane Young, John Ferringer, Sean McDonough, and of course Lori Gowin. SharePoint Developer Another essential role for your SharePoint deployment is a SharePoint developer. Things do start to get a little hazy here and there are many flavors of “developers”. Are you writing custom code? using SharePoint Designer? What about SharePoint Branding?  Are all of these considered developers? I would say yes. Are they interchangeable? I’d say no. Development in SharePoint is such a large beast in itself. I would say that it’s not so large that you can’t know it all well, but it is so large that there are many people who specialize in one particular category. If you are lucky enough to have someone on staff who knows it all well, you better make sure they are well taken care of because those guys are ready-made to move over to a consulting role and charge you 3 times what you are probably paying them. :) Some of the all-around rockstars are Eric Shupps, Andrew Connell (go Razorbacks), Rob Foster, Paul Schaeflein, and Todd Bleeker SharePoint Power User/No-Code Solutions Developer These SharePoint Swiss Army Knives are essential for quick wins in your organization. These people can twist the out-of-the-box functionality to make it do things you would not even imagine. Give these guys SharePoint Designer, jQuery, InfoPath, and a little time and they will create views, dashboards, and KPI’s that will blow your mind away and give your execs the “wow” they are looking for. Not only can they deliver that wow factor, but they can mashup, merge, and really help make your SharePoint application usable and deliver an overall better user experience. Before you hand off a project to your SharePoint Custom Code developer, let one of these rockstars look at it and show you what they can do (in probably less time). I would say the second most important role you can fill in your organization is one of these guys. Rockstars in this category are Christina Wheeler, Laura Rogers, Jennifer Mason, and Mark Miller SharePoint Developer – Custom Code If you want to really integrate SharePoint into your legacy systems, or really twist it and make it bend to your will, you are going to have to open up Visual Studio and write some custom code.  Remember, SharePoint is essentially just a big, huge, ginormous .NET application, so you CAN write code to make it do ANYTHING, but do you really want to spend the time and effort to do so? At some point with every other form of SharePoint development you are going to run into SOME limitation (SPD Workflows is the big one that comes to mind). If you truly want to knock down all the walls then custom development is the way to go. PLEASE keep in mind when you are looking for a custom code developer that a .NET developer does NOT equal a SharePoint developer. Just SOME of the things these guys write are: Custom Workflows Custom Web Parts Web Service functionality Import data from legacy systems Export data to legacy systems Custom Actions Event Receivers Service Applications (2010) These guys are also the ones generally responsible for packaging everything up into solution packages (you are doing that, right?). Rockstars in this category are Phil Wicklund, Christina Wheeler, Geoff Varosky, and Brian Jackett. SharePoint Branding “But it LOOKS like SharePoint!” Somebody call the WAAAAAAAAAAAAHMbulance…   Themes, Master Pages, Page Layouts, Zones, and over 2000 styles in CSS.. these guys not only have to be comfortable with all of SharePoint’s quirks and pain points when branding, but they have to know it TWICE for publishing and non-publishing sites.  Not only that, but these guys really need to have an eye for graphic design and be able to translate the ramblings of business into something visually stunning. They also have to be comfortable with XSLT, XML, and be able to hand off what they do to your custom developers for them to package as solutions (which you are doing, right?). These rockstars include Heater Waterman, Cathy Dew, and Marcy Kellar SharePoint Architect SharePoint Architects are generally SharePoint Admins or Developers who have moved into more of a BA role? Is that fair to say? These guys really have a grasp and understanding for what SharePoint IS and what it can do. These guys help you structure your farms to meet your needs and help you design your applications the correct way. It’s always a good idea to bring in a rockstar SharePoint Architect to do a sanity check and make sure you aren’t doing anything stupid.  Most organizations probably do not have a rockstar architect on staff. These guys are generally brought in at the deployment of a farm, upgrade of a farm, or for large development projects. I personally also find architects very useful for sitting down with the business to translate their needs into what SharePoint can do. A good architect will be able to pick out what can be done out-of-the-box and what has to be custom built and hand those requirements to the development Staff. Architects can generally fill in as an admin or a developer when needed. Some rockstar architects are Rick Taylor, Dan Usher, Bill English, Spence Harbar, Neil Hodgkins, Eric Harlan, and Bjørn Furuknap. Other Roles / Specialties On top of all these other roles you also get these people who specialize in things like Reporting, BDC (BCS in 2010), Search, Performance, Security, Project Management, etc... etc... etc... Again, most organizations will not have one of these gurus on staff, they’ll just pay out the nose for them when they need them. :) SharePoint End User Everyone else in your organization that touches SharePoint falls into this category. What they actually DO in SharePoint is determined by your governance and what permissions you give these guys. Hopefully you have these guys on a fairly short leash and are NOT giving them access to tools like SharePoint Designer. Sadly end users are the ones who truly make your deployment a success by using it, but are also your biggest enemy in breaking it.  :)  We love you guys… really!!! Okay, all that’s fine and dandy, but what should MY SharePoint team look like? It depends! Okay… Are you just doing out of the box team sites with no custom development? Then you are probably fine with a great Admin team and a great No-Code Solution Development team. How many people do you need? Depends on how busy you can keep them. Sorry, can’t answer the question about numbers without knowing your specific needs. I can just tell you who you MIGHT need and what they will do for you. I’ll leave you with what my ideal SharePoint Team would look like for a particular scenario: Farm / Organization Structure Dev, QA, and 2 Production Farms. 5000 – 10000 Users Custom Development and Integration with legacy systems Team Sites, My Sites, Intranet, Document libraries and overall company collaboration Team Rockstar SharePoint Administrator 2-3 junior SharePoint Administrators SharePoint Architect / Lead Developer 2 Power User / No-Code Solution Developers 2-3 Custom Code developers Branding expert With a team of that size and skill set, they should be able to keep a substantial SharePoint deployment running smoothly and meet your business needs. This does NOT mean that you would not need to bring in contract help from time to time when you need an uber specialist in one area. Also, this team assumes there will be ongoing development for the life of your SharePoint farm. If you are just going to be doing sporadic custom development, it might make sense to partner with an awesome firm that specializes in that sort of work (I can give you the name of a couple if you are interested).  Again though, the size of your team depends on the number of requests you are receiving and how much active deployment you are doing. So, don’t bring in a team that looks like this and then yell at me because they are sitting around with nothing to do or are so overwhelmed that nothing is getting done. I do URGE you to take the proper time to asses your needs and determine what team is BEST for your organization. Also, PLEASE PLEASE PLEASE do not skimp on the talent. When it comes to SharePoint you really do get what you pay for when it comes to employees, contractors, and software.  SharePoint can become absolutely critical to your business and because you skimped on hiring a developer he created a web part that brings down the farm because he doesn’t know what he’s doing, or you hire an admin who thinks it’s fine to stick everything in the same Content Database and then can’t figure out why people are complaining. SharePoint can be an enormous blessing to an organization or it’s biggest curse. Spend the time and money to do it right, or be prepared to spending even more time and money later to fix it.

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