entity group transactions - Page 203

OCP - "New Ways to Flash Back"

Reverse transactions and track historical changes in Oracle Database 11g.

Java ME JSRs approved by the JCP EC

The two new Java ME related JSRs were submitted to the JCP earlier in October have been approved by the Executive Committee (EC) to continue development in the JCP program. These JSRs are now open for Expert Group nominations. All registered JCP.org users can nominate themselves to serve on the JSR Expert Group, but you must become a JCP Member to be approved to serve on a JSR Expert Group. JSR 360, Connected Limited Device Configuration (CLDC) 8, was approved by the EC with 11 yes votes (AT&T was not eligible to vote). You can also follow this project on their java.net project. JSR 361, Java ME Embedded Profile, was also approved by the EC with 11 yes votes (AT&T was not eligible to vote). You can also follow this project on their java.net project. 11 yes votes

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Should interface only be used for behavior and not to show logical data grouped together?

- by jags

Should an interface only be used to specify certain behavior? Would it be wrong to use interface to group logically related data? To me it looks like we should not use interface to group logically related data as structure seems a better fit. A class may be used but class name should indicate something like DTO so that user gets the impression that class does not have any behavior. Please let me know if my assumption is correct. Also, are there any exceptions where interface can be used to group logically related data?

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has_one and has_many associations: which side of the association is saved first

- by SeeBees

I have three simplified models: class Team < ActiveRecord::Base has_many :players has_one :coach end class Player < ActiveRecord::Base belongs_to :team validates_presence_of :team_id end class Coach < ActiveRecord::Base belongs_to :team validates_presence_of :team_id end I use the following code to test these models: t = Team.new team.coach = Coach.new team.save! team.save! returns true. But in another test: t = Team.new team.players << Player.new team.save! team.save! gives the following error: > ActiveRecord::RecordInvalid: > Validation failed: Players is invalid > from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/validations.rb:1090:in > `save_without_dirty!' from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/dirty.rb:87:in `save_without_transactions!' from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/transactions.rb:200:in > `save!' from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/connection_adapters/abstract/database_statements.rb:136:in > `transaction' from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/transactions.rb:182:in > `transaction' from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/transactions.rb:200:in > `save!' from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/transactions.rb:208:in > `rollback_active_record_state!' from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/transactions.rb:200:in > `save!' from (irb):14 I figured out when team.save! is called, it first calls player.save!. player needs to validate the presence of the id of the associated team. But at the time player.save! is called, team hasn't been saved yet, and therefore, team_id doesn't yet exist for player. This fails the player's validation, so the error occurs. But on the other hand, team is saved before coach.save!, otherwise the first example will get the same error as the second. So I've concluded that when a has_many bs, a.save! will save bs prior to a. When a has_one b, a.save! will save a prior to b. If I am right, why is this the case? It doesn't seem logical to me. Why has_one and has_many association have different order in saving? Any ideas? Thanks.

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When saving a model with has_one or has_many associations, which side of the association is saved fi

- by SeeBees

I have three simplified models: class Team < ActiveRecord::Base has_many :players has_one :coach end class Player < ActiveRecord::Base belongs_to :team validates_presence_of :team_id end class Coach < ActiveRecord::Base belongs_to :team validates_presence_of :team_id end I use the following code to test these models: t = Team.new team.coach = Coach.new team.save! team.save! returns true. But in another test: t = Team.new team.players << Player.new team.save! team.save! gives the following error: > ActiveRecord::RecordInvalid: > Validation failed: Players is invalid > from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/validations.rb:1090:in > `save_without_dirty!' from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/dirty.rb:87:in `save_without_transactions!' from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/transactions.rb:200:in > `save!' from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/connection_adapters/abstract/database_statements.rb:136:in > `transaction' from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/transactions.rb:182:in > `transaction' from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/transactions.rb:200:in > `save!' from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/transactions.rb:208:in > `rollback_active_record_state!' from > /usr/lib/ruby/gems/1.8/gems/activerecord-2.3.4/lib/active_record/transactions.rb:200:in > `save!' from (irb):14 I figured out that when team.save! is called, it first calls player.save!. player needs to validate the presence of the id of the associated team. But at the time player.save! is called, team hasn't been saved yet, and therefore, team_id doesn't yet exist for player. This fails the player's validation, so the error occurs. But on the other hand, team is saved before coach.save!, otherwise the first example will get the same error as the second one. So I've concluded that when a has_many bs, a.save! will save bs prior to a. When a has_one b, a.save! will save a prior to b. If I am right, why is this the case? It doesn't seem logical to me. Why do has_one and has_many association have different order in saving? Any ideas? And is there any way I can change the order? Say I want to have the same saving order for both has_one and has_many. Thanks.

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Why Do I See the "In Recovery" Msg, and How Can I Prevent it?

- by John Hansen

The project I'm working on creates a local copy of the SQL Server database for each SVN branch you work on. We're running SQL Server 2008 Express with Advanced Services on our local machine to host it. When we create a new branch, the build script will create a new database with the ID of that branch, creates the schema objects, and copies over a selection of data from the production shadow server. After the database is created, it, or other databases on the local machine, will often go into "In Recovery" mode for several minutes. After several refreshes it comes up and is happy, but will occasionally go back into "In Recovery" mode. The database is created in simple recovery mode. The file names aren't specified, so it uses default paths for files. The size of the database after loading data is ~400 megs. It is running in SQL Server 2005 compatibility mode. The command that creates the database is: sqlcmd -S $(DBServer) -Q "IF NOT EXISTS (SELECT [name] FROM sysdatabases WHERE [name] = '$(DBName)') BEGIN CREATE DATABASE [$(DBName)]; print 'Created $(DBName)'; END" ...where $(DBName) and $(DBServer) are MSBuild parameters. I got a nice clean log file this morning. When I turned on my computer it starts all five databases. However, two of them show transactions being rolled forward and backwards. The it just keeps trying to start up all five of the databases. 2010-06-10 08:24:59.74 spid52 Starting up database 'ASPState'. 2010-06-10 08:24:59.82 spid52 Starting up database 'CommunityLibrary'. 2010-06-10 08:25:03.97 spid52 Starting up database 'DLG-R8441'. 2010-06-10 08:25:05.07 spid52 2 transactions rolled forward in database 'DLG-R8441' (6). This is an informational message only. No user action is required. 2010-06-10 08:25:05.14 spid52 0 transactions rolled back in database 'DLG-R8441' (6). This is an informational message only. No user action is required. 2010-06-10 08:25:05.14 spid52 Recovery is writing a checkpoint in database 'DLG-R8441' (6). This is an informational message only. No user action is required. 2010-06-10 08:25:11.23 spid52 Starting up database 'DLG-R8979'. 2010-06-10 08:25:12.31 spid36s Starting up database 'DLG-R8441'. 2010-06-10 08:25:13.17 spid52 2 transactions rolled forward in database 'DLG-R8979' (9). This is an informational message only. No user action is required. 2010-06-10 08:25:13.22 spid52 0 transactions rolled back in database 'DLG-R8979' (9). This is an informational message only. No user action is required. 2010-06-10 08:25:13.22 spid52 Recovery is writing a checkpoint in database 'DLG-R8979' (9). This is an informational message only. No user action is required. 2010-06-10 08:25:18.43 spid52 Starting up database 'Rls QA'. 2010-06-10 08:25:19.13 spid46s Starting up database 'DLG-R8979'. 2010-06-10 08:25:23.29 spid36s Starting up database 'DLG-R8441'. 2010-06-10 08:25:27.91 spid52 Starting up database 'ASPState'. 2010-06-10 08:25:29.80 spid41s Starting up database 'DLG-R8979'. 2010-06-10 08:25:31.22 spid52 Starting up database 'Rls QA'. In this case it kept trying to start the databases continuously until I shut down SQL Server at 08:48:19.72, 23 minutes later. Meanwhile, I actually am able to use the databases much of the time.

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Setting up a new Silverlight 4 Project with WCF RIA Services

- by Kevin Grossnicklaus

Many of my clients are actively using Silverlight 4 and RIA Services to build powerful line of business applications. Getting things set up correctly is critical to being to being able to take full advantage of the RIA services plumbing and when developers struggle with the setup they tend to shy away from the solution as a whole. I’m a big proponent of RIA services and wanted to take the opportunity to share some of my experiences in setting up these types of projects. In late 2010 I presented a RIA Services Master Class here in St. Louis, MO through my firm (ArchitectNow) and the information shared in this post was promised during that presentation. One other thing I want to mention before diving in is the existence of a number of other great posts on this subject. I’ve learned a lot from many of them and wanted to call out a few of them. The purpose of my post is to point out some of the gotchas that people get caught up on in the process but I would still encourage you to do as much additional research as you can to find the perfect setup for your needs. Here are a few additional blog posts and articles you should check out on the subject: http://msdn.microsoft.com/en-us/library/ee707351(VS.91).aspx http://adam-thompson.com/post/2010/07/03/Getting-Started-with-WCF-RIA-Services-for-Silverlight-4.aspx Technologies I don’t intend for this post to turn into a full WCF RIA Services tutorial but I did want to point out what technologies we will be using: Visual Studio.NET 2010 Silverlight 4.0 WCF RIA Services for Visual Studio 2010 Entity Framework 4.0 I also wanted to point out that the screenshots came from my personal development box which has a number of additional plug-ins and frameworks loaded so a few of the screenshots might not match 100% with what you see on your own machines. If you do not have Visual Studio 2010 you can download the express version from http://www.microsoft.com/express. The Silverlight 4.0 tools and the WCF RIA Services components are installed via the Web Platform Installer (http://www.microsoft.com/web/download). Also, the examples given in this post are done in C#…sorry to you VB folks but the concepts are 100% identical. Setting up anew RIA Services Project This section will provide a step-by-step walkthrough of setting up a new RIA services project using a shared DLL for server side code and a simple Entity Framework model for data access. All projects are created with the consistent ArchitectNow.RIAServices filename prefix and default namespace. This would be modified to match your companies standards. First, open Visual Studio and open the new project window via File->New->Project. In the New Project window, select the Silverlight folder in the Installed Templates section on the left and select “Silverlight Application” as your project type. Verify your solution name and location are set appropriately. Note that the project name we specified in the example below ends with .Client. This indicates the name which will be given to our Silverlight project. I consider Silverlight a client-side technology and thus use this name to reflect that. Click Ok to continue. During the creation on a new Silverlight 4 project you will be prompted with the following dialog to create a new web ASP.NET web project to host your Silverlight content. As we are demonstrating the setup of a WCF RIA Services infrastructure, make sure the “Enable WCF RIA Services” option is checked and click OK. Obviously, there are some other options here which have an effect on your solution and you are welcome to look around. For our example we are going to leave the ASP.NET Web Application Project selected. If you are interested in having your Silverlight project hosted in an MVC 2 application or a Web Site project these options are available as well. Also, whichever web project type you select, the name can be modified here as well. Note that it defaults to the same name as your Silverlight project with the addition of a .Web suffix. At this point, your full Silverlight 4 project and host ASP.NET Web Application should be created and will now display in your Visual Studio solution explorer as part of a single Visual Studio solution as follows: Now we want to add our WCF RIA Services projects to this same solution. To do so, right-click on the Solution node in the solution explorer and select Add->New Project. In the New Project dialog again select the Silverlight folder under the Visual C# node on the left and, in the main area of the screen, select the WCF RIA Services Class Library project template as shown below. Make sure your project name is set appropriately as well. For the sample below, we will name the project “ArchitectNow.RIAServices.Server.Entities”. The .Server.Entities suffix we use is meant to simply indicate that this particular project will contain our WCF RIA Services entity classes (as you will see below). Click OK to continue. Once you have created the WCF RIA Services Class Library specified above, Visual Studio will automatically add TWO projects to your solution. The first will be an project called .Server.Entities (using our naming conventions) and the other will have the same name with a .Web extension. The full solution (with all 4 projects) is shown in the image below. The .Entities project will essentially remain empty and is actually a Silverlight 4 class library that will contain generated RIA Services domain objects. It will be referenced by our front-end Silverlight project and thus allow for simplified sharing of code between the client and the server. The .Entities.Web project is a .NET 4.0 class library into which we will put our data access code (via Entity Framework). This is our server side code and business logic and the RIA Services plumbing will maintain a link between this project and the front end. Specific entities such as our domain objects and other code we set to be shared will be copied automatically into the .Entities project to be used in both the front end and the back end. At this point, we want to do a little cleanup of the projects in our solution and we will do so by deleting the “Class1.cs” class from both the .Entities project and the .Entities.Web project. (Has anyone ever intentionally named a class “Class1”?) Next, we need to configure a few references to make RIA Services work. THIS IS A KEY STEP THAT CAUSES MANY HEADACHES FOR DEVELOPERS NEW TO THIS INFRASTRUCTURE! Using the Add References dialog in Visual Studio, add a project reference from the *.Client project (our Silverlight 4 client) to the *.Entities project (our RIA Services class library). Next, again using the Add References dialog in Visual Studio, add a project reference from the *.Client.Web project (our ASP.NET host project) to the *.Entities.Web project (our back-end data services DLL). To get to the Add References dialog, simply right-click on the project you with to add a reference to in the Visual Studio solution explorer and select “Add Reference” from the resulting context menu. You will want to make sure these references are added as “Project” references to simplify your future debugging. To reiterate the reference direction using the project names we have utilized in this example thus far: .Client references .Entities and .Client.Web reference .Entities.Web. If you have opted for a different naming convention, then the Silverlight project must reference the RIA Services Silverlight class library and the ASP.NET host project must reference the server-side class library. Next, we are going to add a new Entity Framework data model to our data services project (.Entities.Web). We will do this by right clicking on this project (ArchitectNow.Server.Entities.Web in the above diagram) and selecting Add->New Project. In the New Project dialog we will select ADO.NET Entity Data Model as in the following diagram. For now we will call this simply SampleDataModel.edmx and click OK. It is worth pointing out that WCF RIA Services is in no way tied to the Entity Framework as a means of accessing data and any data access technology is supported (as long as the server side implementation maps to the RIA Services pattern which is a topic beyond the scope of this post). We are using EF to quickly demonstrate the RIA Services concepts and setup infrastructure, as such, I am not providing a database schema with this post but am instead connecting to a small sample database on my local machine. The following diagram shows a simple EF Data Model with two tables that I reverse engineered from a local data store. If you are putting together your own solution, feel free to reverse engineer a few tables from any local database to which you have access. At this point, once you have an EF data model generated as an EDMX into your .Entites.Web project YOU MUST BUILD YOUR SOLUTION. I know it seems strange to call that out but it important that the solution be built at this point for the next step to be successful. Obviously, if you have any build errors, these must be addressed at this point. At this point we will add a RIA Services Domain Service to our .Entities.Web project (our server side code). We will need to right-click on the .Entities.Web project and select Add->New Item. In the Add New Item dialog, select Domain Service Class and verify the name of your new Domain Service is correct (ours is called SampleService.cs in the image below). Next, click "Add”. After clicking “Add” to include the Domain Service Class in the selected project, you will be presented with the following dialog. In it, you can choose which entities from the selected EDMX to include in your services and if they should be allowed to be edited (i.e. inserted, updated, or deleted) via this service. If the “Available DataContext/ObjectContext classes” dropdown is empty, this indicates you have not yes successfully built your project after adding your EDMX. I would also recommend verifying that the “Generate associated classes for metadata” option is selected. Once you have selected the appropriate options, click “OK”. Once you have added the domain service class to the .Entities.Web project, the resulting solution should look similar to the following: Note that in the solution you now have a SampleDataModel.edmx which represents your EF data mapping to your database and a SampleService.cs which will contain a large amount of generated RIA Services code which RIA Services utilizes to access this data from the Silverlight front-end. You will put all your server side data access code and logic into the SampleService.cs class. The SampleService.metadata.cs class is for decorating the generated domain objects with attributes from the System.ComponentModel.DataAnnotations namespace for validation purposes. FINAL AND KEY CONFIGURATION STEP! One key step that causes significant headache to developers configuring RIA Services for the first time is the fact that, when we added the EDMX to the .Entities.Web project for our EF data access, a connection string was generated and placed within a newly generated App.Context file within that project. While we didn’t point it out at the time you can see it in the image above. This connection string will be required for the EF data model to successfully locate it’s data. Also, when we added the Domain Service class to the .Entities.Web project, a number of RIA Services configuration options were added to the same App.Config file. Unfortunately, when we ultimately begin to utilize the RIA Services infrastructure, our Silverlight UI will be making RIA services calls through the ASP.NET host project (i.e. .Client.Web). This host project has a reference to the .Entities.Web project which actually contains the code so all will pass through correctly EXCEPT the fact that the host project will utilize it’s own Web.Config for any configuration settings. For this reason we must now merge all the sections of the App.Config file in the .Entities.Web project into the Web.Config file in the .Client.Web project. I know this is a bit tedious and I wish there were a simpler solution but it is required for our RIA Services Domain Service to be made available to the front end Silverlight project. Much of this manual merge can be achieved by simply cutting and pasting from App.Config into Web.Config. Unfortunately, the <system.webServer> section will exist in both and the contents of this section will need to be manually merged. Fortunately, this is a step that needs to be taken only once per solution. As you add additional data structures and Domain Services methods to the server no additional changes will be necessary to the Web.Config. Next Steps At this point, we have walked through the basic setup of a simple RIA services solution. Unfortunately, there is still a lot to know about RIA services and we have not even begun to take advantage of the plumbing which we just configured (meaning we haven’t even made a single RIA services call). I plan on posting a few more introductory posts over the next few weeks to take us to this step. If you have any questions on the content in this post feel free to reach out to me via this Blog and I’ll gladly point you in (hopefully) the right direction. Resources Prior to closing out this post, I wanted to share a number or resources to help you get started with RIA services. While I plan on posting more on the subject, I didn’t invent any of this stuff and wanted to give credit to the following areas for helping me put a lot of these pieces into place. The books and online resources below will go a long way to making you extremely productive with RIA services in the shortest time possible. The only thing required of you is the dedication to take advantage of the resources available. Books Pro Business Applications with Silverlight 4 http://www.amazon.com/Pro-Business-Applications-Silverlight-4/dp/1430272074/ref=sr_1_2?ie=UTF8&qid=1291048751&sr=8-2 Silverlight 4 in Action http://www.amazon.com/Silverlight-4-Action-Pete-Brown/dp/1935182374/ref=sr_1_1?ie=UTF8&qid=1291048751&sr=8-1 Pro Silverlight for the Enterprise (Books for Professionals by Professionals) http://www.amazon.com/Pro-Silverlight-Enterprise-Books-Professionals/dp/1430218673/ref=sr_1_3?ie=UTF8&qid=1291048751&sr=8-3 Web Content RIA Services http://channel9.msdn.com/Blogs/RobBagby/NET-RIA-Services-in-5-Minutes http://silverlight.net/riaservices/ http://www.silverlight.net/learn/videos/all/net-ria-services-intro/ http://www.silverlight.net/learn/videos/all/ria-services-support-visual-studio-2010/ http://channel9.msdn.com/learn/courses/Silverlight4/SL4BusinessModule2/SL4LOB_02_01_RIAServices http://www.myvbprof.com/MainSite/index.aspx#/zSL4_RIA_01 http://channel9.msdn.com/blogs/egibson/silverlight-firestarter-ria-services http://msdn.microsoft.com/en-us/library/ee707336%28v=VS.91%29.aspx Silverlight www.silverlight.net http://msdn.microsoft.com/en-us/silverlight4trainingcourse.aspx http://channel9.msdn.com/shows/silverlighttv

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The case of the phantom ADF developer (and other yarns)

- by Chris Muir

A few years of ADF experience means I see common mistakes made by different developers, some I regularly make myself. This post is designed to assist beginners to Oracle JDeveloper Application Development Framework (ADF) avoid a common ADF pitfall, the case of the phantom ADF developer [add Scooby-Doo music here]. ADF Business Components - triggers, default table values and instead of views. Oracle's JDeveloper tutorials help with the A-B-Cs of ADF development, typically built on the nice 'n safe demo schema provided by with the Oracle database such as the HR demo schema. However it's not too long until ADF beginners, having built up some confidence from learning with the tutorials and vanilla demo schemas, start building ADF Business Components based upon their own existing database schema objects. This is where unexpected problems can sneak in. The crime Developers may encounter a surprising error at runtime when editing a record they just created or updated and committed to the database, based on their own existing tables, namely the error: JBO-25014: Another user has changed the row with primary key oracle.jbo.Key[x] ...where X is the primary key value of the row at hand. In a production environment with multiple users this error may be legit, one of the other users has updated the row since you queried it. Yet in a development environment this error is just plain confusing. If developers are isolated in their own database, creating and editing records they know other users can't possibly be working with, or all the other developers have gone home for the day, how is this error possible? There are no other users? It must be the phantom ADF developer! [insert dramatic music here] The following picture is what you'll see in the Business Component Browser, and you'll receive a similar error message via an ADF Faces page: A false conclusion What can possibly cause this issue if it isn't our phantom ADF developer? Doesn't ADF BC implement record locking, locking database records when the row is modified in the ADF middle-tier by a user? How can our phantom ADF developer even take out a lock if this is the case? Maybe ADF has a bug, maybe ADF isn't implementing record locking at all? Shouldn't we see the error "JBO-26030: Failed to lock the record, another user holds the lock" as we attempt to modify the record, why do we see JBO-25014? : Let's verify that ADF is in fact issuing the correct SQL LOCK-FOR-UPDATE statement to the database. First we need to verify ADF's locking strategy. It is determined by the Application Module's jbo.locking.mode property. The default (as of JDev 11.1.1.4.0 if memory serves me correct) and recommended value is optimistic, and the other valid value is pessimistic. Next we need a mechanism to check that ADF is issuing the LOCK statements to the database. We could ask DBAs to monitor locks with OEM, but optimally we'd rather not involve overworked DBAs in this process, so instead we can use the ADF runtime setting –Djbo.debugoutput=console. At runtime this options turns on instrumentation within the ADF BC layer, which among a lot of extra detail displayed in the log window, will show the actual SQL statement issued to the database, including the LOCK statement we're looking to confirm. Setting our locking mode to pessimistic, opening the Business Components Browser of a JSF page allowing us to edit a record, say the CHARGEABLE field within a BOOKINGS record where BOOKING_NO = 1206, upon editing the record see among others the following log entries: [421] Built select: 'SELECT BOOKING_NO, EVENT_NO, RESOURCE_CODE, CHARGEABLE, MADE_BY, QUANTITY, COST, STATUS, COMMENTS FROM BOOKINGS Bookings'[422] Executing LOCK...SELECT BOOKING_NO, EVENT_NO, RESOURCE_CODE, CHARGEABLE, MADE_BY, QUANTITY, COST, STATUS, COMMENTS FROM BOOKINGS Bookings WHERE BOOKING_NO=:1 FOR UPDATE NOWAIT[423] Where binding param 1: 1206 As can be seen on line 422, in fact a LOCK-FOR-UPDATE is indeed issued to the database. Later when we commit the record we see: [441] OracleSQLBuilder: SAVEPOINT 'BO_SP'[442] OracleSQLBuilder Executing, Lock 1 DML on: BOOKINGS (Update)[443] UPDATE buf Bookings>#u SQLStmtBufLen: 210, actual=62[444] UPDATE BOOKINGS Bookings SET CHARGEABLE=:1 WHERE BOOKING_NO=:2[445] Update binding param 1: N[446] Where binding param 2: 1206[447] BookingsView1 notify COMMIT ... [448] _LOCAL_VIEW_USAGE_model_Bookings_ResourceTypesView1 notify COMMIT ... [449] EntityCache close prepared statement ....and as a result the changes are saved to the database, and the lock is released. Let's see what happens when we use the optimistic locking mode, this time to change the same BOOKINGS record CHARGEABLE column again. As soon as we edit the record we see little activity in the logs, nothing to indicate any SQL statement, let alone a LOCK has been taken out on the row. However when we save our records by issuing a commit, the following is recorded in the logs: [509] OracleSQLBuilder: SAVEPOINT 'BO_SP'[510] OracleSQLBuilder Executing doEntitySelect on: BOOKINGS (true)[511] Built select: 'SELECT BOOKING_NO, EVENT_NO, RESOURCE_CODE, CHARGEABLE, MADE_BY, QUANTITY, COST, STATUS, COMMENTS FROM BOOKINGS Bookings'[512] Executing LOCK...SELECT BOOKING_NO, EVENT_NO, RESOURCE_CODE, CHARGEABLE, MADE_BY, QUANTITY, COST, STATUS, COMMENTS FROM BOOKINGS Bookings WHERE BOOKING_NO=:1 FOR UPDATE NOWAIT[513] Where binding param 1: 1205[514] OracleSQLBuilder Executing, Lock 2 DML on: BOOKINGS (Update)[515] UPDATE buf Bookings>#u SQLStmtBufLen: 210, actual=62[516] UPDATE BOOKINGS Bookings SET CHARGEABLE=:1 WHERE BOOKING_NO=:2[517] Update binding param 1: Y[518] Where binding param 2: 1205[519] BookingsView1 notify COMMIT ... [520] _LOCAL_VIEW_USAGE_model_Bookings_ResourceTypesView1 notify COMMIT ... [521] EntityCache close prepared statement Again even though we're seeing the midtier delay the LOCK statement until commit time, it is in fact occurring on line 412, and released as part of the commit issued on line 419. Therefore with either optimistic or pessimistic locking a lock is indeed issued. Our conclusion at this point must be, unless there's the unlikely cause the LOCK statement is never really hitting the database, or the even less likely cause the database has a bug, then ADF does in fact take out a lock on the record before allowing the current user to update it. So there's no way our phantom ADF developer could even modify the record if he tried without at least someone receiving a lock error. Hmm, we can only conclude the locking mode is a red herring and not the true cause of our problem. Who is the phantom? At this point we'll need to conclude that the error message "JBO-25014: Another user has changed" is somehow legit, even though we don't understand yet what's causing it. This leads onto two further questions, how does ADF know another user has changed the row, and what's been changed anyway? To answer the first question, how does ADF know another user has changed the row, the Fusion Guide's section 4.10.11 How to Protect Against Losing Simultaneous Updated Data , that details the Entity Object Change-Indicator property, gives us the answer: At runtime the framework provides automatic "lost update" detection for entity objects to ensure that a user cannot unknowingly modify data that another user has updated and committed in the meantime. Typically, this check is performed by comparing the original values of each persistent entity attribute against the corresponding current column values in the database at the time the underlying row is locked. Before updating a row, the entity object verifies that the row to be updated is still consistent with the current state of the database. The guide further suggests to make this solution more efficient: You can make the lost update detection more efficient by identifying any attributes of your entity whose values you know will be updated whenever the entity is modified. Typical candidates include a version number column or an updated date column in the row.....To detect whether the row has been modified since the user queried it in the most efficient way, select the Change Indicator option to compare only the change-indicator attribute values. We now know that ADF BC doesn't use the locking mechanism at all to protect the current user against updates, but rather it keeps a copy of the original record fetched, separate to the user changed version of the record, and it compares the original record against the one in the database when the lock is taken out. If values don't match, be it the default compare-all-columns behaviour, or the more efficient Change Indicator mechanism, ADF BC will throw the JBO-25014 error. This leaves one last question. Now we know the mechanism under which ADF identifies a changed row, what we don't know is what's changed and who changed it? The real culprit What's changed? We know the record in the mid-tier has been changed by the user, however ADF doesn't use the changed record in the mid-tier to compare to the database record, but rather a copy of the original record before it was changed. This leaves us to conclude the database record has changed, but how and by who? There are three potential causes: Database triggers The database trigger among other uses, can be configured to fire PLSQL code on a database table insert, update or delete. In particular in an insert or update the trigger can override the value assigned to a particular column. The trigger execution is actioned by the database on behalf of the user initiating the insert or update action. Why this causes the issue specific to our ADF use, is when we insert or update a record in the database via ADF, ADF keeps a copy of the record written to the database. However the cached record is instantly out of date as the database triggers have modified the record that was actually written to the database. Thus when we update the record we just inserted or updated for a second time to the database, ADF compares its original copy of the record to that in the database, and it detects the record has been changed – giving us JBO-25014. This is probably the most common cause of this problem. Default values A second reason this issue can occur is another database feature, default column values. When creating a database table the schema designer can define default values for specific columns. For example a CREATED_BY column could be set to SYSDATE, or a flag column to Y or N. Default values are only used by the database when a user inserts a new record and the specific column is assigned NULL. The database in this case will overwrite the column with the default value. As per the database trigger section, it then becomes apparent why ADF chokes on this feature, though it can only specifically occur in an insert-commit-update-commit scenario, not the update-commit-update-commit scenario. Instead of trigger views I must admit I haven't double checked this scenario but it seems plausible, that of the Oracle database's instead of trigger view (sometimes referred to as instead of views). A view in the database is based on a query, and dependent on the queries complexity, may support insert, update and delete functionality to a limited degree. In order to support fully insertable, updateable and deletable views, Oracle introduced the instead of view, that gives the view designer the ability to not only define the view query, but a set of programmatic PLSQL triggers where the developer can define their own logic for inserts, updates and deletes. While this provides the database programmer a very powerful feature, it can cause issues for our ADF application. On inserting or updating a record in the instead of view, the record and it's data that goes in is not necessarily the data that comes out when ADF compares the records, as the view developer has the option to practically do anything with the incoming data, including throwing it away or pushing it to tables which aren't used by the view underlying query for fetching the data. Readers are at this point reminded that this article is specifically about how the JBO-25014 error occurs in the context of 1 developer on an isolated database. The article is not considering how the error occurs in a production environment where there are multiple users who can cause this error in a legitimate fashion. Assuming none of the above features are the cause of the problem, and optimistic locking is turned on (this error is not possible if pessimistic locking is the default mode *and* none of the previous causes are possible), JBO-25014 is quite feasible in a production ADF application if 2 users modify the same record. At this point under project timelines pressure, the obvious fix for developers is to drop both database triggers and default values from the underlying tables. However we must be careful that these legacy constructs aren't used and assumed to be in place by other legacy systems. Dropping the database triggers or default value that the existing Oracle Forms applications assumes and requires to be in place could cause unexpected behaviour and bugs in the Forms application. Proficient software engineers would recognize such a change may require a partial or full regression test of the existing legacy system, a potentially costly and timely exercise, not ideal. Solving the mystery once and for all Luckily ADF has built in functionality to deal with this issue, though it's not a surprise, as Oracle as the author of ADF also built the database, and are fully aware of the Oracle database's feature set. At the Entity Object attribute level, the Refresh After Insert and Refresh After Update properties. Simply selecting these instructs ADF BC after inserting or updating a record to the database, to expect the database to modify the said attributes, and read a copy of the changed attributes back into its cached mid-tier record. Thus next time the developer modifies the current record, the comparison between the mid-tier record and the database record match, and JBO-25014: Another user has changed" is no longer an issue. [Post edit - as per the comment from Oracle's Steven Davelaar below, as he correctly points out the above solution will not work for instead-of-triggers views as it relies on SQL RETURNING clause which is incompatible with this type of view] Alternatively you can set the Change Indicator on one of the attributes. This will work as long as the relating column for the attribute in the database itself isn't inadvertently updated. In turn you're possibly just masking the issue rather than solving it, because if another developer turns the Change Indicator back on the original issue will return.

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Seems doctrine listener is not fired

- by Roel Veldhuizen

Got a service which should be executed the moment an object is persisted. Though, I think the code looks like it should work, it doesn't. I configured the service like the following yml. services: bla_orm.listener: class: Bla\OrmBundle\EventListener\UserManager arguments: [@security.encoder_factory] tags: - { name: doctrine.event_listener, event: prePersist } The class: namespace Bla\OrmBundle\EventListener; use Doctrine\ORM\Event\LifecycleEventArgs; use Bla\OrmBundle\Entity\User; class UserManager { protected $encoderFactory; public function __construct(\Symfony\Component\Security\Core\Encoder\EncoderFactoryInterface $encoderFactory) { $this->encoderFactory = $encoderFactory; } public function prePersist(LifecycleEventArgs $args) { $entity = $args->getEntity(); if ($entity instanceof User) { $encoder = $this->encoderFactory ->getEncoder($entity); $entity->setSalt(rand(10000, 99999)); $password = $encoder->encodePassword($entity->getPassword(), $entity->getSalt()); $entity->setPassword($password); } } } Symfony version: Symfony version 2.3.3 - app/dev/debug Output of container:debug [container] Public services Service Id Scope Class Name annotation_reader container Doctrine\Common\Annotations\FileCacheReader assetic.asset_manager container Assetic\Factory\LazyAssetManager assetic.controller prototype Symfony\Bundle\AsseticBundle\Controller\AsseticController assetic.filter.cssrewrite container Assetic\Filter\CssRewriteFilter assetic.filter_manager container Symfony\Bundle\AsseticBundle\FilterManager assetic.request_listener container Symfony\Bundle\AsseticBundle\EventListener\RequestListener cache_clearer container Symfony\Component\HttpKernel\CacheClearer\ChainCacheClearer cache_warmer container Symfony\Component\HttpKernel\CacheWarmer\CacheWarmerAggregate data_collector.request container Symfony\Component\HttpKernel\DataCollector\RequestDataCollector data_collector.router container Symfony\Bundle\FrameworkBundle\DataCollector\RouterDataCollector database_connection n/a alias for doctrine.dbal.default_connection debug.controller_resolver container Symfony\Component\HttpKernel\Controller\TraceableControllerResolver debug.deprecation_logger_listener container Symfony\Component\HttpKernel\EventListener\ErrorsLoggerListener debug.emergency_logger_listener container Symfony\Component\HttpKernel\EventListener\ErrorsLoggerListener debug.event_dispatcher container Symfony\Component\HttpKernel\Debug\TraceableEventDispatcher debug.stopwatch container Symfony\Component\Stopwatch\Stopwatch debug.templating.engine.php container Symfony\Bundle\FrameworkBundle\Templating\TimedPhpEngine debug.templating.engine.twig n/a alias for templating doctrine container Doctrine\Bundle\DoctrineBundle\Registry doctrine.dbal.connection_factory container Doctrine\Bundle\DoctrineBundle\ConnectionFactory doctrine.dbal.default_connection container stdClass doctrine.orm.default_entity_manager container Doctrine\ORM\EntityManager doctrine.orm.default_manager_configurator container Doctrine\Bundle\DoctrineBundle\ManagerConfigurator doctrine.orm.entity_manager n/a alias for doctrine.orm.default_entity_manager doctrine.orm.validator.unique container Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntityValidator doctrine.orm.validator_initializer container Symfony\Bridge\Doctrine\Validator\DoctrineInitializer event_dispatcher container Symfony\Component\EventDispatcher\ContainerAwareEventDispatcher file_locator container Symfony\Component\HttpKernel\Config\FileLocator filesystem container Symfony\Component\Filesystem\Filesystem form.csrf_provider container Symfony\Component\Form\Extension\Csrf\CsrfProvider\SessionCsrfProvider form.factory container Symfony\Component\Form\FormFactory form.registry container Symfony\Component\Form\FormRegistry form.resolved_type_factory container Symfony\Component\Form\ResolvedFormTypeFactory form.type.birthday container Symfony\Component\Form\Extension\Core\Type\BirthdayType form.type.button container Symfony\Component\Form\Extension\Core\Type\ButtonType form.type.checkbox container Symfony\Component\Form\Extension\Core\Type\CheckboxType form.type.choice container Symfony\Component\Form\Extension\Core\Type\ChoiceType form.type.collection container Symfony\Component\Form\Extension\Core\Type\CollectionType form.type.country container Symfony\Component\Form\Extension\Core\Type\CountryType form.type.currency container Symfony\Component\Form\Extension\Core\Type\CurrencyType form.type.date container Symfony\Component\Form\Extension\Core\Type\DateType form.type.datetime container Symfony\Component\Form\Extension\Core\Type\DateTimeType form.type.email container Symfony\Component\Form\Extension\Core\Type\EmailType form.type.entity container Symfony\Bridge\Doctrine\Form\Type\EntityType form.type.file container Symfony\Component\Form\Extension\Core\Type\FileType form.type.form container Symfony\Component\Form\Extension\Core\Type\FormType form.type.hidden container Symfony\Component\Form\Extension\Core\Type\HiddenType form.type.integer container Symfony\Component\Form\Extension\Core\Type\IntegerType form.type.language container Symfony\Component\Form\Extension\Core\Type\LanguageType form.type.locale container Symfony\Component\Form\Extension\Core\Type\LocaleType form.type.money container Symfony\Component\Form\Extension\Core\Type\MoneyType form.type.number container Symfony\Component\Form\Extension\Core\Type\NumberType form.type.password container Symfony\Component\Form\Extension\Core\Type\PasswordType form.type.percent container Symfony\Component\Form\Extension\Core\Type\PercentType form.type.radio container Symfony\Component\Form\Extension\Core\Type\RadioType form.type.repeated container Symfony\Component\Form\Extension\Core\Type\RepeatedType form.type.reset container Symfony\Component\Form\Extension\Core\Type\ResetType form.type.search container Symfony\Component\Form\Extension\Core\Type\SearchType form.type.submit container Symfony\Component\Form\Extension\Core\Type\SubmitType form.type.text container Symfony\Component\Form\Extension\Core\Type\TextType form.type.textarea container Symfony\Component\Form\Extension\Core\Type\TextareaType form.type.time container Symfony\Component\Form\Extension\Core\Type\TimeType form.type.timezone container Symfony\Component\Form\Extension\Core\Type\TimezoneType form.type.url container Symfony\Component\Form\Extension\Core\Type\UrlType form.type_extension.csrf container Symfony\Component\Form\Extension\Csrf\Type\FormTypeCsrfExtension form.type_extension.form.http_foundation container Symfony\Component\Form\Extension\HttpFoundation\Type\FormTypeHttpFoundationExtension form.type_extension.form.validator container Symfony\Component\Form\Extension\Validator\Type\FormTypeValidatorExtension form.type_extension.repeated.validator container Symfony\Component\Form\Extension\Validator\Type\RepeatedTypeValidatorExtension form.type_extension.submit.validator container Symfony\Component\Form\Extension\Validator\Type\SubmitTypeValidatorExtension form.type_guesser.doctrine container Symfony\Bridge\Doctrine\Form\DoctrineOrmTypeGuesser form.type_guesser.validator container Symfony\Component\Form\Extension\Validator\ValidatorTypeGuesser fragment.handler container Symfony\Component\HttpKernel\Fragment\FragmentHandler fragment.listener container Symfony\Component\HttpKernel\EventListener\FragmentListener fragment.renderer.hinclude container Symfony\Bundle\FrameworkBundle\Fragment\ContainerAwareHIncludeFragmentRenderer fragment.renderer.inline container Symfony\Component\HttpKernel\Fragment\InlineFragmentRenderer http_kernel container Symfony\Component\HttpKernel\DependencyInjection\ContainerAwareHttpKernel kernel container locale_listener container Symfony\Component\HttpKernel\EventListener\LocaleListener logger container Symfony\Bridge\Monolog\Logger mailer n/a alias for swiftmailer.mailer.default monolog.handler.chromephp container Symfony\Bridge\Monolog\Handler\ChromePhpHandler monolog.handler.debug container Symfony\Bridge\Monolog\Handler\DebugHandler monolog.handler.firephp container Symfony\Bridge\Monolog\Handler\FirePHPHandler monolog.handler.main container Monolog\Handler\StreamHandler monolog.logger.deprecation container Symfony\Bridge\Monolog\Logger monolog.logger.doctrine container Symfony\Bridge\Monolog\Logger monolog.logger.emergency container Symfony\Bridge\Monolog\Logger monolog.logger.event container Symfony\Bridge\Monolog\Logger monolog.logger.profiler container Symfony\Bridge\Monolog\Logger monolog.logger.request container Symfony\Bridge\Monolog\Logger monolog.logger.router container Symfony\Bridge\Monolog\Logger monolog.logger.security container Symfony\Bridge\Monolog\Logger monolog.logger.templating container Symfony\Bridge\Monolog\Logger profiler container Symfony\Component\HttpKernel\Profiler\Profiler profiler_listener container Symfony\Component\HttpKernel\EventListener\ProfilerListener property_accessor container Symfony\Component\PropertyAccess\PropertyAccessor request request response_listener container Symfony\Component\HttpKernel\EventListener\ResponseListener router container Symfony\Bundle\FrameworkBundle\Routing\Router router_listener container Symfony\Component\HttpKernel\EventListener\RouterListener routing.loader container Symfony\Bundle\FrameworkBundle\Routing\DelegatingLoader security.context container Symfony\Component\Security\Core\SecurityContext security.encoder_factory container Symfony\Component\Security\Core\Encoder\EncoderFactory security.firewall container Symfony\Component\Security\Http\Firewall security.firewall.map.context.dev container Symfony\Bundle\SecurityBundle\Security\FirewallContext security.firewall.map.context.login container Symfony\Bundle\SecurityBundle\Security\FirewallContext security.firewall.map.context.rest container Symfony\Bundle\SecurityBundle\Security\FirewallContext security.firewall.map.context.secured_area container Symfony\Bundle\SecurityBundle\Security\FirewallContext security.rememberme.response_listener container Symfony\Component\Security\Http\RememberMe\ResponseListener security.secure_random container Symfony\Component\Security\Core\Util\SecureRandom security.validator.user_password container Symfony\Component\Security\Core\Validator\Constraints\UserPasswordValidator sensio.distribution.webconfigurator n/a alias for sensio_distribution.webconfigurator sensio_distribution.webconfigurator container Sensio\Bundle\DistributionBundle\Configurator\Configurator sensio_framework_extra.cache.listener container Sensio\Bundle\FrameworkExtraBundle\EventListener\CacheListener sensio_framework_extra.controller.listener container Sensio\Bundle\FrameworkExtraBundle\EventListener\ControllerListener sensio_framework_extra.converter.datetime container Sensio\Bundle\FrameworkExtraBundle\Request\ParamConverter\DateTimeParamConverter sensio_framework_extra.converter.doctrine.orm container Sensio\Bundle\FrameworkExtraBundle\Request\ParamConverter\DoctrineParamConverter sensio_framework_extra.converter.listener container Sensio\Bundle\FrameworkExtraBundle\EventListener\ParamConverterListener sensio_framework_extra.converter.manager container Sensio\Bundle\FrameworkExtraBundle\Request\ParamConverter\ParamConverterManager sensio_framework_extra.view.guesser container Sensio\Bundle\FrameworkExtraBundle\Templating\TemplateGuesser sensio_framework_extra.view.listener container Sensio\Bundle\FrameworkExtraBundle\EventListener\TemplateListener service_container container session container Symfony\Component\HttpFoundation\Session\Session session.handler container Symfony\Component\HttpFoundation\Session\Storage\Handler\NativeFileSessionHandler session.storage n/a alias for session.storage.native session.storage.filesystem container Symfony\Component\HttpFoundation\Session\Storage\MockFileSessionStorage session.storage.native container Symfony\Component\HttpFoundation\Session\Storage\NativeSessionStorage session.storage.php_bridge container Symfony\Component\HttpFoundation\Session\Storage\PhpBridgeSessionStorage session_listener container Symfony\Bundle\FrameworkBundle\EventListener\SessionListener streamed_response_listener container Symfony\Component\HttpKernel\EventListener\StreamedResponseListener swiftmailer.email_sender.listener container Symfony\Bundle\SwiftmailerBundle\EventListener\EmailSenderListener swiftmailer.mailer n/a alias for swiftmailer.mailer.default swiftmailer.mailer.default container Swift_Mailer swiftmailer.mailer.default.plugin.messagelogger container Swift_Plugins_MessageLogger swiftmailer.mailer.default.spool container Swift_FileSpool swiftmailer.mailer.default.transport container Swift_Transport_SpoolTransport swiftmailer.mailer.default.transport.real container Swift_Transport_EsmtpTransport swiftmailer.plugin.messagelogger n/a alias for swiftmailer.mailer.default.plugin.messagelogger swiftmailer.spool n/a alias for swiftmailer.mailer.default.spool swiftmailer.transport n/a alias for swiftmailer.mailer.default.transport swiftmailer.transport.real n/a alias for swiftmailer.mailer.default.transport.real templating container Symfony\Bundle\TwigBundle\Debug\TimedTwigEngine templating.asset.package_factory container Symfony\Bundle\FrameworkBundle\Templating\Asset\PackageFactory templating.filename_parser container Symfony\Bundle\FrameworkBundle\Templating\TemplateFilenameParser templating.globals container Symfony\Bundle\FrameworkBundle\Templating\GlobalVariables templating.helper.actions container Symfony\Bundle\FrameworkBundle\Templating\Helper\ActionsHelper templating.helper.assets request Symfony\Component\Templating\Helper\CoreAssetsHelper templating.helper.code container Symfony\Bundle\FrameworkBundle\Templating\Helper\CodeHelper templating.helper.form container Symfony\Bundle\FrameworkBundle\Templating\Helper\FormHelper templating.helper.logout_url container Symfony\Bundle\SecurityBundle\Templating\Helper\LogoutUrlHelper templating.helper.request container Symfony\Bundle\FrameworkBundle\Templating\Helper\RequestHelper templating.helper.router container Symfony\Bundle\FrameworkBundle\Templating\Helper\RouterHelper templating.helper.security container Symfony\Bundle\SecurityBundle\Templating\Helper\SecurityHelper templating.helper.session container Symfony\Bundle\FrameworkBundle\Templating\Helper\SessionHelper templating.helper.slots container Symfony\Component\Templating\Helper\SlotsHelper templating.helper.translator container Symfony\Bundle\FrameworkBundle\Templating\Helper\TranslatorHelper templating.loader container Symfony\Bundle\FrameworkBundle\Templating\Loader\FilesystemLoader templating.name_parser container Symfony\Bundle\FrameworkBundle\Templating\TemplateNameParser translation.dumper.csv container Symfony\Component\Translation\Dumper\CsvFileDumper translation.dumper.ini container Symfony\Component\Translation\Dumper\IniFileDumper translation.dumper.mo container Symfony\Component\Translation\Dumper\MoFileDumper translation.dumper.php container Symfony\Component\Translation\Dumper\PhpFileDumper translation.dumper.po container Symfony\Component\Translation\Dumper\PoFileDumper translation.dumper.qt container Symfony\Component\Translation\Dumper\QtFileDumper translation.dumper.res container Symfony\Component\Translation\Dumper\IcuResFileDumper translation.dumper.xliff container Symfony\Component\Translation\Dumper\XliffFileDumper translation.dumper.yml container Symfony\Component\Translation\Dumper\YamlFileDumper translation.extractor container Symfony\Component\Translation\Extractor\ChainExtractor translation.extractor.php container Symfony\Bundle\FrameworkBundle\Translation\PhpExtractor translation.loader container Symfony\Bundle\FrameworkBundle\Translation\TranslationLoader translation.loader.csv container Symfony\Component\Translation\Loader\CsvFileLoader translation.loader.dat container Symfony\Component\Translation\Loader\IcuResFileLoader translation.loader.ini container Symfony\Component\Translation\Loader\IniFileLoader translation.loader.mo container Symfony\Component\Translation\Loader\MoFileLoader translation.loader.php container Symfony\Component\Translation\Loader\PhpFileLoader translation.loader.po container Symfony\Component\Translation\Loader\PoFileLoader translation.loader.qt container Symfony\Component\Translation\Loader\QtFileLoader translation.loader.res container Symfony\Component\Translation\Loader\IcuResFileLoader translation.loader.xliff container Symfony\Component\Translation\Loader\XliffFileLoader translation.loader.yml container Symfony\Component\Translation\Loader\YamlFileLoader translation.writer container Symfony\Component\Translation\Writer\TranslationWriter translator n/a alias for translator.default translator.default container Symfony\Bundle\FrameworkBundle\Translation\Translator twig container Twig_Environment twig.controller.exception container Symfony\Bundle\TwigBundle\Controller\ExceptionController twig.exception_listener container Symfony\Component\HttpKernel\EventListener\ExceptionListener twig.loader container Symfony\Bundle\TwigBundle\Loader\FilesystemLoader twig.translation.extractor container Symfony\Bridge\Twig\Translation\TwigExtractor uri_signer container Symfony\Component\HttpKernel\UriSigner bla_orm.listener container Bla\OrmBundle\EventListener\UserManager validator container Symfony\Component\Validator\Validator web_profiler.controller.exception container Symfony\Bundle\WebProfilerBundle\Controller\ExceptionController web_profiler.controller.profiler container Symfony\Bundle\WebProfilerBundle\Controller\ProfilerController web_profiler.controller.router container Symfony\Bundle\WebProfilerBundle\Controller\RouterController web_profiler.debug_toolbar container Symfony\Bundle\WebProfilerBundle\EventListener\WebDebugToolbarListener Update It seems that the listener is not invoked when an updateAction, generated by generate:doctrine:crud has taken place though. At another part of the code the lister seems to be invoked. Though, there are both Controller types and both us $em->persist($something); $em->flush(); to save the changes. I would expect that in both cases the listener is invoked.

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MySQL Connector/Net 6.5.5 Maintenance Release has been released

- by fernando

MySQL Connector/Net 6.5.5, a new maintenance release of our 6.5 series, has been released. This release is GA quality and is appropriate for use in production environments. Please note that 6.6 is our latest driver series and is the recommended product for development. It is now available in source and binary form from http://dev.mysql.com/downloads/connector/net/#downloads and mirror sites (note that not all mirror sites may be up to date at this point-if you can't find this version on some mirror, please try again later or choose another download site.) The 6.5.5 version of MySQL Connector/Net brings the following fixes: - Fix for ArgumentNull exception when using Take().Count() in a LINQ to Entities query (bug MySql #64749, Oracle bug #13913047). - Fix for type varchar changed to bit when saving in Table Designer (Oracle bug #13916560). - Fix for error when trying to change the name of an Index on the Indexes/Keys editor; along with this fix now users can change the Index type of a new Index which could not be done in previous versions, and when changing the Index name the change is reflected on the list view at the left side of the Index/Keys editor (Oracle bug #13613801). - Fix for stored procedure call using only its name with EF code first (MySql bug #64999, Oracle bug #14008699). - Fix for List.Contains generates a bunch of ORs instead of more efficient IN clause in LINQ to Entities (Oracle bug #14016344, MySql bug #64934). - Fix for performance issue in generated EF query: .NET StartsWith/Contains/EndsWith produces MySql's locate instead of Like (MySql bug #64935, Oracle bug #14009363). - Fix for script generated for code first contains wrong alter table and wrong declaration for byte[] (MySql bug #64216, Oracle bug #13900091). - Fix and code contribution for bug Timed out sessions are removed without notification which allow to enable the Expired CallBack when Session Provider times out any session (bug MySql #62266 Oracle bug # 13354935) - Fix for Exception thrown when using cascade delete in an EDM Model-First in Entity Framework (Oracle bug #14008752, MySql bug #64779). - Fix for Session locking issue with MySqlSessionStateStore (MySql bug #63997, Oracble bug #13733054). - Fixed deleting a user profile using Profile provider (MySQL bug #64470, Oracle bug #13790123) - Fix for bug Cannot Create an Entity with a Key of Type String (MySQL bug #65289, Oracle bug #14540202). This fix checks if the type has a FixedLength facet set in order to create a char otherwise should create varchar, mediumtext or longtext types when using a String CLR type in Code First or Model First also tested in Database First. Unit tests added for Code First and ProviderManifest. - Fix for bug "CacheServerProperties can cause 'Packet too large' error". The issue was due to a missing reading of Max_allowed_packet server property when CacheServerProperties is in true, since the value was read only in the first connection but the following pooled connections had a wrong value causing a Packet too large error. Including also a unit test for this scenario. All unit test passed. MySQL Bug #66578 Orabug #14593547. - Fix for handling unnamed parameter in MySQLCommand. This fix allows the mysqlcommand to handle parameters without requiring naming (e.g. INSERT INTO Test (id,name) VALUES (?, ?) ) (MySQL Bug #66060, Oracle bug #14499549). - Fixed inheritance on Entity Framework Code First scenarios. Discriminator column is created using its correct type as varchar(128) (MySql bug #63920 and Oracle bug #13582335). - Fixed "Trying to customize column precision in Code First does not work" (MySql bug #65001, Oracle bug #14469048). - Fixed bug ASP.NET Membership database fails on MySql database UTF32 (MySQL bug #65144, Oracle bug #14495292). - Fix for MySqlCommand.LastInsertedId holding only 32 bit values (MySql bug #65452, Oracle bug #14171960) by changing several internal declaration of lastinsertid from int to long. - Fixed "Decimal type should have digits at right of decimal point", now default is 2, but user's changes in EDM designer are recognized (MySql bug #65127, Oracle bug #14474342). - Fix for NullReferenceException when saving an uninitialized row in Entity Framework (MySql bug #66066, Oracle bug #14479715). - Fix for error when calling RoleProvider.RemoveUserFromRole(): causes an exception due to a wrong table being used (MySql bug #65805, Oracle bug #14405338). - Fix for "Memory Leak on MySql.Data.MySqlClient.MySqlCommand", too many MemoryStream's instances created (MySql bug #65696, Oracle bug #14468204). - Added ANTLR attribution notice (Oracle bug #14379162). - Fixed Entity Framework + mysql connector/net in partial trust throws exceptions (MySql bug #65036, Oracle bug #14668820). - Added support in Parser for Datetime and Time types with precision when using Server 5.6 (No bug Number). - Small improvement on MySqlPoolManager CleanIdleConnections for better mysqlpoolmanager idlecleanuptimer at startup (MySql bug #66472 and Oracle bug #14652624). - Fix for bug TIMESTAMP values are mistakenly represented as DateTime with Kind = Local (Mysql bug #66964, Oracle bug #14740705). - Fix for bug Keyword not supported. Parameter name: AttachDbFilename (Mysql bug #66880, Oracle bug #14733472). - Added support to MySql script file to retrieve data when using "SHOW" statements. - Fix for Package Load Failure in Visual Studio 2005 (MySql bug #63073, Oracle bug #13491674). - Fix for bug "Unable to connect using IPv6 connections" (MySQL bug #67253, Oracle bug #14835718). - Added auto-generated values for Guid identity columns (MySql bug #67450, Oracle bug #15834176). - Fix for method FirstOrDefault not supported in some LINQ to Entities queries (MySql bug #67377, Oracle bug #15856964). The release is available to download at http://dev.mysql.com/downloads/connector/net/6.5.html Documentation ------------------------------------- You can view current Connector/Net documentation at http://dev.mysql.com/doc/refman/5.5/en/connector-net.html You can find our team blog at http://blogs.oracle.com/MySQLOnWindows. You can also post questions on our forums at http://forums.mysql.com/. Enjoy and thanks for the support!

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Community Branching

- by Dane Morgridge

As some may have noticed, I have taken a liking to Ruby (and Rails in particular) quite a bit recently. This last weekend I spoke at the NYC Code Camp on a comparison of ASP.NET and Rails as well as an intro to Entity Framework talk. I am speaking at RubyNation in April and have submitted to other ruby conferences around the area and I am also doing a Rails and MongoDB talk at the Philly Code Camp in April. Before you start to think this is my "I'm leaving .NET post", which it isn't so I need to clarify. I am not, nor do I intend to any time in the near future plan on abandoning .NET. I am simply branching out into another community based on a development technology that I very much enjoy. If you look at my twitter bio, you will see that I am into Entity Framework, Ruby on Rails, C++ and ASP.NET MVC, and not necessarily in that order. I know you're probably thinking to your self that I am crazy, which is probably true on several levels (especially the C++ part). I was actually crazy enough at the NYC Code Camp to show up wearing a Linux t-shirt, presenting with my MacBook Pro on Entity Framework, ASP.NET MVC and Rails. (I did get pelted in the head with candy by Rachel Appel for it though) At all of the code camps I am submitting to this year, i will be submitting sessions on likely all four topics, and some sessions will be a combination of 2 or more. For example, my "ASP.NET MVC: A Gateway To Rails?" talk touches ASP.NET MVC, Entity Framework Code First and Rails. Simply put (and I talk about this in my MVC & Rails talk) is that learning and using Rails has made me a better ASP.NET MVC developer. Just one example of this is helper methods. When I started working with ASP.NET MVC, I didn't really want to use helpers and preferred to just use standard html tags, especially where links were concerned. It was just me being stubborn and not really seeing all of the benefit of the helpers. To my defense, coming from WebForms, I wanted to be as bare metal as possible and it seemed at first like a lot of the helpers were an unnecessary abstraction. I took my first look at Rails back in v1 and didn't spend very much time with it so I dismissed it and went on my merry ASP.NET WebForms way. Then I picked up ASP.NET MVC and grasped the MVC pattern itself much better. After this, I took another look at Rails and everything made sense. I decided then to learn Rails. (I think it is important for developers to learn new languages and platforms regularly so it was a natural progression for me) I wanted to learn it the right way, so when I dug into code, everyone used helpers everywhere for pretty much everything possible. I took some time to dig in and found out how helpful they were and subsequently realized how awesome they were in ASP.NET MVC also and started using them. In short, I love Rails (and Ruby in general). I also love ASP.NET MVC and Entity Framework and yes I still love C++. I have varying degrees of love for them individually at any given moment and it is likely to shift based on the current project I am working on. I know you're thinking it so before you ask the question. "Which do I use when?", I'm going to give the standard developer answer of: It depends. There are a lot of factors that I am not going to even go into that would go into a decision. The most basic question I would ask though is, does this project depend on .NET? If it does, then I'd say that ASP.NET MVC is probably going to be the more logical choice and I am going to leave it at that. I am working on projects right now in both technologies and I don't see that changing anytime soon (one project even uses both). With all that being said, you'll find me at code camps, conferences and user groups presenting on .NET, Ruby or both, writing about .NET and Ruby and I will likely be blogging on both in the future. I know of others that have successfully branched out to other communities and with any luck I'll be successful at it too. On a (sorta) side note, I read a post by Justin Etheredge the other day that pretty much sums up my feelings about Ruby as a language. I highly recommend checking it out: What Is So Great About Ruby?

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Upgrading to Code Based Migrations EF 4.3.1 with Connector/Net 6.6

- by GABMARTINEZ

Entity Framework 4.3.1 includes a new feature called code first migrations. We are adding support for this feature in our upcoming 6.6 release of Connector/Net. In this walk-through we'll see the workflow of code-based migrations when you have an existing application and you would like to upgrade to this EF 4.3.1 version and use this approach, so you can keep track of the changes that you do to your database. The first thing we need to do is add the new Entity Framework 4.3.1 package to our application. This should via the NuGet package manager. You can read more about why EF is not part of the .NET framework here. Adding EF 4.3.1 to our existing application Inside VS 2010 go to Tools -> Library Package Manager -> Package Manager Console, this will open the Power Shell Host Window where we can work with all the EF commands. In order to install this library to your existing application you should type Install-Package EntityFramework This will make some changes to your application. So Let's check them. In your .config file you'll see a <configSections> which contains the version you have from EntityFramework and also was added the <entityFramework> section as shown below. This section is by default configured to use SQL Express which won't be necesary for this case. So you can comment it out or leave it empty. Also please make sure you're using the Connector/Net 6.6.x version which is the one that has this support as is shown in the previous image. At this point we face one issue; in order to be able to work with Migrations we need the __MigrationHistory table that we don't have yet since our Database was created with an older version. This table is used to keep track of the changes in our model. So we need to get it in our existing Database. Getting a Migration-History table into an existing database First thing we need to do to enable migrations in our existing application is to create our configuration class which will set up the MySqlClient Provider as our SQL Generator. So we have to add it with the following code: using System.Data.Entity.Migrations; //add this at the top of your cs file public class Configuration : DbMigrationsConfiguration<NameOfYourDbContext> //Make sure to use the name of your existing DBContext { public Configuration() { this.AutomaticMigrationsEnabled = false; //Set Automatic migrations to false since we'll be applying the migrations manually for this case. SetSqlGenerator("MySql.Data.MySqlClient", new MySql.Data.Entity.MySqlMigrationSqlGenerator()); } } This code will set up our configuration that we'll be using when executing all the migrations for our application. Once we have done this we can Build our application so we can check that everything is fine. Creating our Initial Migration Now let's add our Initial Migration. In Package Manager Console, execute "add-migration InitialCreate", you can use any other name but I like to set this as our initial create for future reference. After we run this command, some changes were done in our application: A new Migrations Folder was created. A new class migration call InitialCreate which in most of the cases should have empty Up and Down methods as long as your database is up to date with your Model. Since all your entities already exists, delete all duplicated code to create any entity which exists already in your Database if there is any. I found this easier when you don't have any pending updates to do to your database. Now we have our empty migration that will make no changes in our database and represents how are all the things at the begining of our migrations. Finally, let's create our MigrationsHistory table. Optionally you can add SQL code to delete the edmdata table which is not needed anymore. public override void Up() { // Just make sure that you used 4.1 or later version Sql("DROP TABLE EdmMetadata"); } From our Package Manager Console let's type: Update-database; If you like to see the operations made on each Update-database command you can use the flag -verbose after the Update-database. This will make two important changes. It will execute the Up method in the initial migration which has no changes in the database. And second, and very important, it will create the __MigrationHistory table necessary to keep track of your changes. And next time you make a change to your database it will compare the current model to the one stored in the Model Column of this table. Conclusion The important thing of this walk through is that we must create our initial migration before we start doing any changes to our model. This way we'll be adding the necessary __MigrationsHistory table to our existing database, so we can keep our database up to date with all the changes we do in our context model using migrations. Hope you have found this information useful. Please let us know if you have any questions or comments, also please check our forums here where we keep answering questions in general for the community. Happy MySQL/Net Coding!

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ADF Business Components

- by Arda Eralp

ADF Business Components and JDeveloper simplify the development, delivery, and customization of business applications for the Java EE platform. With ADF Business Components, developers aren't required to write the application infrastructure code required by the typical Java EE application to: Connect to the database Retrieve data Lock database records Manage transactions ADF Business Components addresses these tasks through its library of reusable software components and through the supporting design time facilities in JDeveloper. Most importantly, developers save time using ADF Business Components since the JDeveloper design time makes typical development tasks entirely declarative. In particular, JDeveloper supports declarative development with ADF Business Components to: Author and test business logic in components which automatically integrate with databases Reuse business logic through multiple SQL-based views of data, supporting different application tasks Access and update the views from browser, desktop, mobile, and web service clients Customize application functionality in layers without requiring modification of the delivered application The goal of ADF Business Components is to make the business services developer more productive. ADF Business Components provides a foundation of Java classes that allow your business-tier application components to leverage the functionality provided in the following areas: Simplifying Data Access Design a data model for client displays, including only necessary data Include master-detail hierarchies of any complexity as part of the data model Implement end-user Query-by-Example data filtering without code Automatically coordinate data model changes with business services layer Automatically validate and save any changes to the database Enforcing Business Domain Validation and Business Logic Declaratively enforce required fields, primary key uniqueness, data precision-scale, and foreign key references Easily capture and enforce both simple and complex business rules, programmatically or declaratively, with multilevel validation support Navigate relationships between business domain objects and enforce constraints related to compound components Supporting Sophisticated UIs with Multipage Units of Work Automatically reflect changes made by business service application logic in the user interface Retrieve reference information from related tables, and automatically maintain the information when the user changes foreign-key values Simplify multistep web-based business transactions with automatic web-tier state management Handle images, video, sound, and documents without having to use code Synchronize pending data changes across multiple views of data Consistently apply prompts, tooltips, format masks, and error messages in any application Define custom metadata for any business components to support metadata-driven user interface or application functionality Add dynamic attributes at runtime to simplify per-row state management Implementing High-Performance Service-Oriented Architecture Support highly functional web service interfaces for business integration without writing code Enforce best-practice interface-based programming style Simplify application security with automatic JAAS integration and audit maintenance "Write once, run anywhere": use the same business service as plain Java class, EJB session bean, or web service Streamlining Application Customization Extend component functionality after delivery without modifying source code Globally substitute delivered components with extended ones without modifying the application ADF Business Components implements the business service through the following set of cooperating components: Entity object An entity object represents a row in a database table and simplifies modifying its data by handling all data manipulation language (DML) operations for you. These are basically your 1 to 1 representation of a database table. Each table in the database will have 1 and only 1 EO. The EO contains the mapping between columns and attributes. EO's also contain the business logic and validation. These are you core data services. They are responsible for updating, inserting and deleting records. The Attributes tab displays the actual mapping between attributes and columns, the mapping has following fields: Name : contains the name of the attribute we expose in our data model. Type : defines the data type of the attribute in our application. Column : specifies the column to which we want to map the attribute with Column Type : contains the type of the column in the database View object A view object represents a SQL query. You use the full power of the familiar SQL language to join, filter, sort, and aggregate data into exactly the shape required by the end-user task. The attributes in the View Objects are actually coming from the Entity Object. In the end the VO will generate a query but you basically build a VO by selecting which EO need to participate in the VO and which attributes of those EO you want to use. That's why you have the Entity Usage column so you can see the relation between VO and EO. In the query tab you can clearly see the query that will be generated for the VO. At this stage we don't need it and just use it for information purpose. In later stages we might use it. Application module An application module is the controller of your data layer. It is responsible for keeping hold of the transaction. It exposes the data model to the view layer. You expose the VO's through the Application Module. This is the abstraction of your data layer which you want to show to the outside word.It defines an updatable data model and top-level procedures and functions (called service methods) related to a logical unit of work related to an end-user task. While the base components handle all the common cases through built-in behavior, customization is always possible and the default behavior provided by the base components can be easily overridden or augmented. When you create EO's, a foreign key will be translated into an association in our model. It defines the type of relation and who is the master and child as well as how the visibility of the association looks like. A similar concept exists to identify relations between view objects. These are called view links. These are almost identical as association except that a view link is based upon attributes defined in the view object. It can also be based upon an association. Here's a short summary: Entity Objects: representations of tables Association: Relations between EO's. Representations of foreign keys View Objects: Logical model View Links: Relationships between view objects Application Model: interface to your application

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Could not synchronize database state with session

- by user359427

Hello all, I'm having trouble trying to persist an entity which ID is a generated value. This entity (A), at persistence time, has to persist in cascade another entity(B). The relationship within A and B is OneToMany, and the property related in B is part of a composite key. I'm using Eclipse, JBOSS Runtime, JPA/Hibernate Here is my code: Entity A: @Entity public class Cambios implements Serializable { private static final long serialVersionUID = 1L; @SequenceGenerator(name="CAMBIOS_GEN",sequenceName="CAMBIOS_SEQ",allocationSize=1) @Id @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="CAMBIOS_GEN") @Column(name="ID_CAMBIO") private Long idCambio; //bi-directional many-to-one association to ObjetosCambio @OneToMany(cascade={CascadeType.PERSIST},mappedBy="cambios") private List<ObjetosCambio> objetosCambioList; public Cambios() { } ... } Entity B: @Entity @Table(name="OBJETOS_CAMBIO") public class ObjetosCambio implements Serializable { private static final long serialVersionUID = 1L; @EmbeddedId private ObjetosCambioPK id; //bi-directional many-to-one association to Cambios @ManyToOne @JoinColumn(name="ID_CAMBIO", insertable=false, updatable=false) private Cambios cambios; //bi-directional many-to-one association to Objetos @ManyToOne @JoinColumn(name="ID_OBJETO", insertable=false, updatable=false) private Objetos objetos; public ObjetosCambio() { } ... Entity B PK: @Embeddable public class ObjetosCambioPK implements Serializable { //default serial version id, required for serializable classes. private static final long serialVersionUID = 1L; @Column(name="ID_OBJETO") private Long idObjeto; @Column(name="ID_CAMBIO") private Long idCambio; public ObjetosCambioPK() { } Client: public String generarCambio(){ ServiceLocator serviceLocator = null; try { serviceLocator = serviceLocator.getInstance(); FachadaLocal tcLocal; tcLocal = (FachadaLocal)serviceLocator.getFacadeService("java:comp/env/negocio/Fachada"); Cambios cambio = new Cambios(); Iterator it = objetosLocal.iterator(); //OBJETOSLOCAL IS ALREADY POPULATED OUTSIDE OF THIS METHOD List<ObjetosCambio> ocList = new ArrayList(); while (it.hasNext()){ Objetos objeto = (Objetos)it.next(); ObjetosCambio objetosCambio = new ObjetosCambio(); objetosCambio.setCambios(cambio); //AT THIS TIME THIS "CAMBIO" DOES NOT HAVE ITS ID, ITS SUPPOSED TO BE GENERATED AT PERSISTENCE TIME ObjetosCambioPK ocPK = new ObjetosCambioPK(); ocPK.setIdObjeto(objeto.getIdObjeto()); objetosCambio.setId(ocPK); ocList.add(objetosCambio); } cambio.setObjetosCambioList(ocList); tcLocal.persistEntity(cambio); return "exito"; } catch (NamingException e) { // TODO e.printStackTrace(); } return null; } ERROR: 15:23:25,717 WARN [JDBCExceptionReporter] SQL Error: 1400, SQLState: 23000 15:23:25,717 ERROR [JDBCExceptionReporter] ORA-01400: no se puede realizar una inserción NULL en ("CDC"."OBJETOS_CAMBIO"."ID_CAMBIO") 15:23:25,717 WARN [JDBCExceptionReporter] SQL Error: 1400, SQLState: 23000 15:23:25,717 ERROR [JDBCExceptionReporter] ORA-01400: no se puede realizar una inserción NULL en ("CDC"."OBJETOS_CAMBIO"."ID_CAMBIO") 15:23:25,717 ERROR [AbstractFlushingEventListener] Could not synchronize database state with session org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:94) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:275) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:266) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:167) at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1027) at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:365) at org.hibernate.ejb.AbstractEntityManagerImpl$1.beforeCompletion(AbstractEntityManagerImpl.java:504) at com.arjuna.ats.internal.jta.resources.arjunacore.SynchronizationImple.beforeCompletion(SynchronizationImple.java:101) at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.beforeCompletion(TwoPhaseCoordinator.java:269) at com.arjuna.ats.arjuna.coordinator.TwoPhaseCoordinator.end(TwoPhaseCoordinator.java:89) at com.arjuna.ats.arjuna.AtomicAction.commit(AtomicAction.java:177) at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.commitAndDisassociate(TransactionImple.java:1423) at com.arjuna.ats.internal.jta.transaction.arjunacore.BaseTransaction.commit(BaseTransaction.java:137) at com.arjuna.ats.jbossatx.BaseTransactionManagerDelegate.commit(BaseTransactionManagerDelegate.java:75) at org.jboss.aspects.tx.TxPolicy.endTransaction(TxPolicy.java:170) at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:87) at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:190) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102) at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102) at org.jboss.ejb3.tx.NullInterceptor.invoke(NullInterceptor.java:42) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102) at org.jboss.ejb3.security.Ejb3AuthenticationInterceptorv2.invoke(Ejb3AuthenticationInterceptorv2.java:186) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102) at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:41) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102) at org.jboss.ejb3.BlockContainerShutdownInterceptor.invoke(BlockContainerShutdownInterceptor.java:67) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102) at org.jboss.aspects.currentinvocation.CurrentInvocationInterceptor.invoke(CurrentInvocationInterceptor.java:67) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:102) at org.jboss.ejb3.session.SessionSpecContainer.invoke(SessionSpecContainer.java:176) at org.jboss.ejb3.session.SessionSpecContainer.invoke(SessionSpecContainer.java:216) at org.jboss.ejb3.proxy.impl.handler.session.SessionProxyInvocationHandlerBase.invoke(SessionProxyInvocationHandlerBase.java:207) at org.jboss.ejb3.proxy.impl.handler.session.SessionProxyInvocationHandlerBase.invoke(SessionProxyInvocationHandlerBase.java:164) at $Proxy298.persistEntity(Unknown Source) at backing.SolicitudCambio.generarCambio(SolicitudCambio.java:521) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:146) at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:92) at javax.faces.component.UICommand.broadcast(UICommand.java:332) at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:287) at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:401) at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:95) at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:110) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:213) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:301) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Unknown Source) Caused by: java.sql.BatchUpdateException: ORA-01400: no se puede realizar una inserción NULL en ("CDC"."OBJETOS_CAMBIO"."ID_CAMBIO") Thanks in advance! JM.-

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SQL Server transaction log backups,

- by krimerd

Hi there, I have a question regarding the transaction log backups in sql server 2008. I am currently taking full backups once a week (Sunday) and transaction log backups daily. I put full backup in folder1 on Sunday and then on Monday I also put the 1st transaction log backup in the same folder. On tuesday, before I take the 2nd transaction log backup I move the first transaction log backup from folder1 an put it into folder2 and then I take the 2nd transaction log backup and put it in the folder1. Same thing on Wed, Thurs and so on. Basicaly in folder1 I always have the latest full backup and the latest transaction log backup while the other transaction log backups are in folder2. My questions is, when sql server is about to take, lets say 4th (Thursday) transaction log backup, does it look for the previous transac log backups (1st, 2nd, and 3rd) so that this new backup will only include the transactions from the last backup or it has some other way of knowing whether there are other transac log backups. Basically, I am asking this because all my transaction log backups seem to be about the same size and I thought that their size will depend on the amount of transactions since the last transaction log backup. Example: If you have a, lets say, full backup and then you take a transac log backup and this transac log backup is lets say 200 MB and now you immediatelly take another transac log backup, this last transac log backup should be considerably smaller than the first one because no or almost no transaction occured between these two backups, right? At least, that's what I've been assuming. What happens in my case is that this second backup is pretty much the same size as the first one and I am wondering if the reason for that is because I moved the first transac log backup to a different folder so now sql server thinks that all I have is just a full backup and it then gets all the transactions that happened since the full backup and puts it in the 2nd transac log backup. Can anyone please explain if my assumptions are right? Thanks...

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How does QuickBooks handle IIF imports?

- by dwwilson66

I've received a 'template' for an IIF file for Quickbooks transactions, and there's like seventy-bazillion fields in there, lots of which I never even user. It's a tab delimited file, with the following lines--field headers for transactions and respective splits for those transactions, followed by an end-of-transaction marker. !TRNS FIELD1 FIELD2 FIELD3 ... FIELD48 !SPL FIELD1 FIELD2 FIELD3 ... FIELD48 !ENDTRNS TRNS FIELD1_DATA FIELD2_DATA FIELD3_DATA ... FIELD48_DATA SPL FIELD1_DATA FIELD2_DATA FIELD3_DATA ... FIELD48_DATA ENDTRNS ... What drives data to a particular field? Is it the field header with corresponding data, or is it the tabular position relative to the head of the line? E.G., Let's say all I have to import is the data in FIELD1, FIELD3 and FIELD5: Would I need by header: !TRNS FIELD1 FIELD3 FIELD5 !SPL FIELD1 FIELD3 FIELD5 !ENDTRNS TRNS FIELD1 FIELD3 FIELD5 SPL FIELD1 FIELD3 FIELD5 ENDTRNS or by tabular position: !TRNS FIELD1 FIELD2 FIELD3 FIELD4 FIELD5 !SPL FIELD1 FIELD2 FIELD3 FIELD4 FIELD5 !ENDTRNS TRNS FIELD1_DATA FIELD2_BLANK FIELD3_DATA FIELD4_BLANK FIELD5_DATA SPL FIELD1_DATA FIELD2_BLANK FIELD3_DATA FIELD4_BLANK FIELD5_DATA ENDTRNS Alternately, if it were a comma delimited input, would I need: DATA1,DATA3,DATA5 or DATA1,,DATA3,,DATA5 Anyone have any experience with what Quickbooks is doing?

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Hibernate : load and

- by Albert Kam

According to the tutorial : http://jpa.ezhibernate.com/Javacode/learn.jsp?tutorial=27hibernateloadvshibernateget, If you initialize a JavaBean instance with a load method call, you can only access the properties of that JavaBean, for the first time, within the transactional context in which it was initialized. If you try to access the various properties of the JavaBean after the transaction that loaded it has been committed, you'll get an exception, a LazyInitializationException, as Hibernate no longer has a valid transactional context to use to hit the database. But with my experiment, using hibernate 3.6, and postgres 9, it doesnt throw any exception at all. Am i missing something ? Here's my code : import org.hibernate.Session; public class AppLoadingEntities { /** * @param args */ public static void main(String[] args) { HibernateUtil.beginTransaction(); Session session = HibernateUtil.getSession(); EntityUser userFromGet = get(session); EntityUser userFromLoad = load(session); // finish the transaction session.getTransaction().commit(); // try fetching field value from entity bean that is fetched via get outside transaction, and it'll be okay System.out.println("userFromGet.getId() : " + userFromGet.getId()); System.out.println("userFromGet.getName() : " + userFromGet.getName()); // fetching field from entity bean that is fetched via load outside transaction, and it'll be errornous // NOTE : but after testing, load seems to be okay, what gives ? ask forums try { System.out.println("userFromLoad.getId() : " + userFromLoad.getId()); System.out.println("userFromLoad.getName() : " + userFromLoad.getName()); } catch(Exception e) { System.out.println("error while fetching entity that is fetched from load : " + e.getMessage()); } } private static EntityUser load(Session session) { EntityUser user = (EntityUser) session.load(EntityUser.class, 1l); System.out.println("user fetched with 'load' inside transaction : " + user); return user; } private static EntityUser get(Session session) { // safe to set it to 1, coz the table got recreated at every run of this app EntityUser user = (EntityUser) session.get(EntityUser.class, 1l); System.out.println("user fetched with 'get' : " + user); return user; } } And here's the output : 88 [main] INFO org.hibernate.annotations.common.Version - Hibernate Commons Annotations 3.2.0.Final 93 [main] INFO org.hibernate.cfg.Environment - Hibernate 3.6.0.Final 94 [main] INFO org.hibernate.cfg.Environment - hibernate.properties not found 96 [main] INFO org.hibernate.cfg.Environment - Bytecode provider name : javassist 98 [main] INFO org.hibernate.cfg.Environment - using JDK 1.4 java.sql.Timestamp handling 139 [main] INFO org.hibernate.cfg.Configuration - configuring from resource: /hibernate.cfg.xml 139 [main] INFO org.hibernate.cfg.Configuration - Configuration resource: /hibernate.cfg.xml 172 [main] WARN org.hibernate.util.DTDEntityResolver - recognized obsolete hibernate namespace http://hibernate.sourceforge.net/. Use namespace http://www.hibernate.org/dtd/ instead. Refer to Hibernate 3.6 Migration Guide! 191 [main] INFO org.hibernate.cfg.Configuration - Configured SessionFactory: null 237 [main] INFO org.hibernate.cfg.AnnotationBinder - Binding entity from annotated class: EntityUser 263 [main] INFO org.hibernate.cfg.annotations.EntityBinder - Bind entity EntityUser on table MstUser 293 [main] INFO org.hibernate.cfg.Configuration - Hibernate Validator not found: ignoring 296 [main] INFO org.hibernate.cfg.search.HibernateSearchEventListenerRegister - Unable to find org.hibernate.search.event.FullTextIndexEventListener on the classpath. Hibernate Search is not enabled. 300 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - Using Hibernate built-in connection pool (not for production use!) 300 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - Hibernate connection pool size: 20 300 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - autocommit mode: false 309 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - using driver: org.postgresql.Driver at URL: jdbc:postgresql://localhost:5432/hibernate 309 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - connection properties: {user=sofco, password=****} 354 [main] INFO org.hibernate.cfg.SettingsFactory - Database -> name : PostgreSQL version : 9.0.1 major : 9 minor : 0 354 [main] INFO org.hibernate.cfg.SettingsFactory - Driver -> name : PostgreSQL Native Driver version : PostgreSQL 9.0 JDBC4 (build 801) major : 9 minor : 0 372 [main] INFO org.hibernate.dialect.Dialect - Using dialect: org.hibernate.dialect.PostgreSQLDialect 382 [main] INFO org.hibernate.engine.jdbc.JdbcSupportLoader - Disabling contextual LOB creation as createClob() method threw error : java.lang.reflect.InvocationTargetException 383 [main] INFO org.hibernate.transaction.TransactionFactoryFactory - Transaction strategy: org.hibernate.transaction.JDBCTransactionFactory 384 [main] INFO org.hibernate.transaction.TransactionManagerLookupFactory - No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended) 384 [main] INFO org.hibernate.cfg.SettingsFactory - Automatic flush during beforeCompletion(): disabled 384 [main] INFO org.hibernate.cfg.SettingsFactory - Automatic session close at end of transaction: disabled 384 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC batch size: 15 384 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC batch updates for versioned data: disabled 384 [main] INFO org.hibernate.cfg.SettingsFactory - Scrollable result sets: enabled 384 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC3 getGeneratedKeys(): enabled 384 [main] INFO org.hibernate.cfg.SettingsFactory - Connection release mode: auto 385 [main] INFO org.hibernate.cfg.SettingsFactory - Default batch fetch size: 1 385 [main] INFO org.hibernate.cfg.SettingsFactory - Generate SQL with comments: disabled 385 [main] INFO org.hibernate.cfg.SettingsFactory - Order SQL updates by primary key: disabled 385 [main] INFO org.hibernate.cfg.SettingsFactory - Order SQL inserts for batching: disabled 385 [main] INFO org.hibernate.cfg.SettingsFactory - Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory 385 [main] INFO org.hibernate.hql.ast.ASTQueryTranslatorFactory - Using ASTQueryTranslatorFactory 385 [main] INFO org.hibernate.cfg.SettingsFactory - Query language substitutions: {} 385 [main] INFO org.hibernate.cfg.SettingsFactory - JPA-QL strict compliance: disabled 385 [main] INFO org.hibernate.cfg.SettingsFactory - Second-level cache: enabled 385 [main] INFO org.hibernate.cfg.SettingsFactory - Query cache: disabled 385 [main] INFO org.hibernate.cfg.SettingsFactory - Cache region factory : org.hibernate.cache.impl.NoCachingRegionFactory 386 [main] INFO org.hibernate.cfg.SettingsFactory - Optimize cache for minimal puts: disabled 386 [main] INFO org.hibernate.cfg.SettingsFactory - Structured second-level cache entries: disabled 388 [main] INFO org.hibernate.cfg.SettingsFactory - Echoing all SQL to stdout 389 [main] INFO org.hibernate.cfg.SettingsFactory - Statistics: disabled 389 [main] INFO org.hibernate.cfg.SettingsFactory - Deleted entity synthetic identifier rollback: disabled 389 [main] INFO org.hibernate.cfg.SettingsFactory - Default entity-mode: pojo 389 [main] INFO org.hibernate.cfg.SettingsFactory - Named query checking : enabled 389 [main] INFO org.hibernate.cfg.SettingsFactory - Check Nullability in Core (should be disabled when Bean Validation is on): enabled 402 [main] INFO org.hibernate.impl.SessionFactoryImpl - building session factory 549 [main] INFO org.hibernate.impl.SessionFactoryObjectFactory - Not binding factory to JNDI, no JNDI name configured Hibernate: select entityuser0_.id as id0_0_, entityuser0_.name as name0_0_, entityuser0_.password as password0_0_ from MstUser entityuser0_ where entityuser0_.id=? user fetched with 'get' : 1:Albert Kam xzy:abc user fetched with 'load' inside transaction : 1:Albert Kam xzy:abc userFromGet.getId() : 1 userFromGet.getName() : Albert Kam xzy userFromLoad.getId() : 1 userFromLoad.getName() : Albert Kam xzy

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Error : java.lang.NoSuchMethodError: org.objectweb.asm.ClassWriter.<init>(I)V

- by Hitesh Solanki

Hiii.... I am developing small spring application. I have to store the details of the student information in the database. I have develop one simpleformcontroller.I have used netbeans + hibernate mapping + spring. when I deploy the project,the following errors is occured. please help me.. Thanks in advance..... My spring-config-db-applicationContext.xml is shown below: <?xml version="1.0" encoding="UTF-8"?> ${driverClassName} ${url} ${username} ${password} WEB-INF/classes/hibernate.cfg.xml -- hibernate.cfg.xml org.hibernate.cfg.AnnotationConfiguration -- <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">${dialect}</prop> <prop key="hibernate.show_sql">true</prop>  </props> </property> </bean> Following error is occured: ERROR (org.springframework.web.context.ContextLoader:213) - Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in URL [jndi:/localhost/Student/WEB-INF/classes/config/spring-db-applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.NoSuchMethodError: org.objectweb.asm.ClassWriter.(I)V at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1395) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:512) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:450) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:289) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:286) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:188) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:526) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:730) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:387) at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:270) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4342) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:627) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:511) at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1231) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:836) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:761) at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1471) at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:824) at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:350) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:196) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619) Caused by: java.lang.NoSuchMethodError: org.objectweb.asm.ClassWriter.(I)V at net.sf.cglib.core.DebuggingClassWriter.(DebuggingClassWriter.java:47) at net.sf.cglib.core.DefaultGeneratorStrategy.getClassWriter(DefaultGeneratorStrategy.java:30) at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:24) at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216) at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:144) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:116) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104) at net.sf.cglib.proxy.Enhancer.(Enhancer.java:69) at org.hibernate.proxy.pojo.cglib.CGLIBLazyInitializer.getProxyFactory(CGLIBLazyInitializer.java:117) at org.hibernate.proxy.pojo.cglib.CGLIBProxyFactory.postInstantiate(CGLIBProxyFactory.java:43) at org.hibernate.tuple.entity.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:162) at org.hibernate.tuple.entity.AbstractEntityTuplizer.(AbstractEntityTuplizer.java:135) at org.hibernate.tuple.entity.PojoEntityTuplizer.(PojoEntityTuplizer.java:55) at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.(EntityEntityModeToTuplizerMapping.java:56) at org.hibernate.tuple.entity.EntityMetamodel.(EntityMetamodel.java:302) at org.hibernate.persister.entity.AbstractEntityPersister.(AbstractEntityPersister.java:434) at org.hibernate.persister.entity.SingleTableEntityPersister.(SingleTableEntityPersister.java:108) at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:61) at org.hibernate.impl.SessionFactoryImpl.(SessionFactoryImpl.java:238) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1304) at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:813) at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:731) at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:211) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1454) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1392) ... 48 more Mar 12, 2010 5:32:28 PM org.apache.catalina.core.StandardContext start SEVERE: Error listenerStart

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Why is the class wrong for NSFetchRequest?

- by Stephen Furlani

Hello, I am working with an undocumented API (Osirix) and I have a sister-question to the one I posted here. I am having trouble loading objects from a managed object context. With loading from API, using their instance of _context and _model 2010-05-28 14:05:13.588 OsiriX[44012:a0f] Entity: Study 2010-05-28 14:05:13.589 OsiriX[44012:a0f] EntityClassName: DicomStudy 2010-05-28 14:05:13.589 OsiriX[44012:a0f] ClassName: DicomStudy With loading from Fetch Request (and my own instance of _context, and _model) 2010-05-28 14:19:09.956 rcOsirix[44431:7a03] Entity: Study 2010-05-28 14:19:09.957 rcOsirix[44431:7a03] EntityClassName: DicomStudy 2010-05-28 14:19:09.958 rcOsirix[44431:7a03] ClassName: NSManagedObject output given by: NSLog(@"Entity: %@",[[item entity] name]); NSLog(@"EntityClassName: %@", [[item entity] managedObjectClassName]); NSLog(@"ClassName: %s", class_getName(object_getClass([item class]))); So it is obvious that even though the Entity thinks it is a DicomSeries - it is not. It is just a NSManagedObject. DicomSeries has some "hard-coded" KVC stuff that I ran into a problem with in my other question. I'm pursuing a different line of reasoning in this thread - with the loading of the objects. The following is their code: - (NSManagedObjectModel *)managedObjectModel { if (managedObjectModel) return managedObjectModel; NSMutableSet *allBundles = [[NSMutableSet alloc] init]; [allBundles addObject: [NSBundle mainBundle]]; [allBundles addObjectsFromArray: [NSBundle allFrameworks]]; managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL: [NSURL fileURLWithPath: [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"/OsiriXDB_DataModel.mom"]]]; [allBundles release]; return managedObjectModel; } - (NSManagedObjectContext *) managedObjectContextLoadIfNecessary:(BOOL) loadIfNecessary { NSError *error = nil; NSString *localizedDescription; NSFileManager *fileManager; if( currentDatabasePath == nil) return nil; if (managedObjectContext) return managedObjectContext; if( loadIfNecessary == NO) return nil; fileManager = [NSFileManager defaultManager]; [persistentStoreCoordinator release]; persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel: self.managedObjectModel]; managedObjectContext = [[NSManagedObjectContext alloc] init]; [managedObjectContext setPersistentStoreCoordinator: persistentStoreCoordinator]; NSURL *url = [NSURL fileURLWithPath: currentDatabasePath]; if (![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:url options:nil error:&error]) { NSLog(@"********** managedObjectContextLoadIfNecessary FAILED: %@", error); localizedDescription = [error localizedDescription]; error = [NSError errorWithDomain:@"OsiriXDomain" code:0 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:error, NSUnderlyingErrorKey, [NSString stringWithFormat:@"Store Configuration Failure: %@", ((localizedDescription != nil) ? localizedDescription : @"Unknown Error")], NSLocalizedDescriptionKey, nil]]; } [[managedObjectContext undoManager] setLevelsOfUndo: 1]; [[managedObjectContext undoManager] disableUndoRegistration]; // This line is very important, if there is NO database.sql file [self saveDatabase: currentDatabasePath]; return managedObjectContext; } This is my code: NSManagedObjectModel* DataModule::managedObjectModel() { if (_managedObjectModel) return _managedObjectModel; NSMutableSet *allBundles = [[NSMutableSet alloc] init]; [allBundles addObject: [NSBundle mainBundle]]; [allBundles addObjectsFromArray: [NSBundle allFrameworks]]; _managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL: [NSURL fileURLWithPath: [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"/OsiriXDB_DataModel.mom"]]]; [allBundles release]; return [_managedObjectModel retain]; } ... NSError *error = nil; [_storeCoordinator release]; _storeCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel: managedObjectModel()]; _context = [[NSManagedObjectContext alloc] init]; [_context setPersistentStoreCoordinator: _storeCoordinator]; NSURL *url = [NSURL fileURLWithPath: [[NSString alloc] initWithCString:_DBPath.c_str()]]; if (url == nil) { [pool release]; _loadLock = false; return nil; } if (![_storeCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:url options:nil error:&error]) { NSLog(@"********** managedObjectContextLoadIfNecessary FAILED: %@", error); NSString *localizedDescription = [error localizedDescription]; error = [NSError errorWithDomain:@"OsiriXDomain" code:0 userInfo:[NSDictionary dictionaryWithObjectsAndKeys:error, NSUnderlyingErrorKey, [NSString stringWithFormat:@"Store Configuration Failure: %@", ((localizedDescription != nil) ? localizedDescription : @"Unknown Error")], NSLocalizedDescriptionKey, nil]]; //Exit Failure [pool release]; _loadLock = false; return nil; } [[_context undoManager] setLevelsOfUndo: 1]; [[_context undoManager] disableUndoRegistration]; ... I am including all the same frameworks.... but _allBundles isn't even used to create the managedObjectModel so I don't know what it's supposed to do except load them into memory so that the mom can look at them while loading. Totally lost. Help! Why would objects returned by my FetchRequest with the same Entity come out as NSManagedObjects and not DicomStudys? I'm including DicomStudy.h so it should see the object during creation of the model, context, and fetch request. [request setEntity: [[managedObjectModel() entitiesByName] objectForKey:@"Study"]]; Thanks in advance, -Stephen

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How To Disable Control Panel in Windows 7

- by Mysticgeek

If you have a shared computer that your family and friends can access, you might not want them to mess around in the Control Panel, and luckily with a simple tweak you can disable it. Disable Control Panel with Group Policy Note: This process uses Local Group Policy Editor which is not available in Home versions of Windows 7. Skip down below for the registry hack version that works on Home editions as well. First type gpedit.msc into the Search box in the Start menu and hit Enter. When Local Group Policy Editor opens, navigate to User Configuration \ Administrative Templates then select Control Panel in the left Column. In the right column double-click on Prohibit access to the Control Panel. In the next window, select Enable, click OK, then close out of Local Group Policy Editor. After the Control Panel is disabled, you’ll notice it’s no longer listed in the Start Menu. If the user tries to type Control Panel into the Search box in the Start menu, they will get the following message indicating it’s restricted. Disable Control Panel with a Registry Tweak You can also tweak the Registry to disable Control Panel. This will work with all versions of Windows 7, Vista, and XP. Making changes in the Registry is not recommended for beginners and you should create a Restore Point, or backup the Registry before making any changes. Type regedit into the Search box in the Start menu and hit Enter. In Registry Editor navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\Current Version\Policies\Explorer. Then right-click in the right pane and create a new DWORD (32-bit) Value. Name the value NoControlPanel. Then right-click on the new Value and click Modify… In the Value data field change the value to “1” then click OK. Close out of Registry Editor and restart the machine to complete the process. When you get back from reboot, you’ll notice Control Panel is no longer listed in the Start menu. If a user tries to access it by typing Control Panel into the Search box in the Start menu… They will get the following message indicating it is restricted, just like if you were to disable it via Group Policy. If you want to re-enable the Control Panel, go back into the Registry and change the NoControlPanel value back to “0” then reboot the computer. This comes in handy if you have inexperienced users working on your machine and don’t want them messing with Control Panel settings. Similar Articles Productive Geek Tips Disable User Account Control (UAC) the Easy Way on Win 7 or VistaStill Useful in Vista: Startup Control PanelRestore Missing Items in Windows Vista Control PanelHow To Manage Action Center in Windows 7New Vista Syntax for Opening Control Panel Items from the Command-line TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Home Networks – How do they look like & the problems they cause Check Your IMAP Mail Offline In Thunderbird Follow Finder Finds You Twitter Users To Follow Combine MP3 Files Easily QuicklyCode Provides Cheatsheets & Other Programming Stuff Download Free MP3s from Amazon

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T-SQL Improvements And Data Types in ms sql 2008

- by Aamir Hasan

Microsoft SQL Server 2008 is a new version released in the first half of 2008 introducing new properties and capabilities to SQL Server product family. All these new and enhanced capabilities can be defined as the classic words like secure, reliable, scalable and manageable. SQL Server 2008 is secure. It is reliable. SQL2008 is scalable and is more manageable when compared to previous releases. Now we will have a look at the features that are making MS SQL Server 2008 more secure, more reliable, more scalable, etc. in details.Microsoft SQL Server 2008 provides T-SQL enhancements that improve performance and reliability. Itzik discusses composable DML, the ability to declare and initialize variables in the same statement, compound assignment operators, and more reliable object dependency information. Table-Valued ParametersInserts into structures with 1-N cardinality problematicOne order -> N order line items"N" is variable and can be largeDon't want to force a new order for every 20 line itemsOne database round-trip / line item slows things downNo ARRAY data type in SQL ServerXML composition/decomposition used as an alternativeTable-valued parameters solve this problemTable-Valued ParametersSQL Server has table variablesDECLARE @t TABLE (id int);SQL Server 2008 adds strongly typed table variablesCREATE TYPE mytab AS TABLE (id int);DECLARE @t mytab;Parameters must use strongly typed table variables Table Variables are Input OnlyDeclare and initialize TABLE variable DECLARE @t mytab; INSERT @t VALUES (1), (2), (3); EXEC myproc @t;Procedure must declare variable READONLY CREATE PROCEDURE usetable ( @t mytab READONLY ...) AS INSERT INTO lineitems SELECT * FROM @t; UPDATE @t SET... -- no!T-SQL Syntax EnhancementsSingle statement declare and initialize DECLARE @iint = 4;Compound Assignment Operators SET @i += 1;Row constructors DECLARE @t TABLE (id int, name varchar(20)); INSERT INTO @t VALUES (1, 'Fred'), (2, 'Jim'), (3, 'Sue');Grouping SetsGrouping Sets allow multiple GROUP BY clauses in a single SQL statementMultiple, arbitrary, sets of subtotalsSingle read pass for performanceNested subtotals provide ever better performanceGrouping Sets are an ANSI-standardCOMPUTE BY is deprecatedGROUPING SETS, ROLLUP, CUBESQL Server 2008 - ANSI-syntax ROLLUP and CUBEPre-2008 non-ANSI syntax is deprecatedWITH ROLLUP produces n+1 different groupings of datawhere n is the number of columns in GROUP BYWITH CUBE produces 2^n different groupingswhere n is the number of columns in GROUP BYGROUPING SETS provide a "halfway measure"Just the number of different groupings you needGrouping Sets are visible in query planGROUPING_ID and GROUPINGGrouping Sets can produce non-homogeneous setsGrouping set includes NULL values for group membersNeed to distinguish by grouping and NULL valuesGROUPING (column expression) returns 0 or 1Is this a group based on column expr. or NULL value?GROUPING_ID (a,b,c) is a bitmaskGROUPING_ID bits are set based on column expressions a, b, and cMERGE StatementMultiple set operations in a single SQL statementUses multiple sets as inputMERGE target USING source ON ...Operations can be INSERT, UPDATE, DELETEOperations based onWHEN MATCHEDWHEN NOT MATCHED [BY TARGET] WHEN NOT MATCHED [BY SOURCE]More on MERGEMERGE statement can reference a $action columnUsed when MERGE used with OUTPUT clauseMultiple WHEN clauses possible For MATCHED and NOT MATCHED BY SOURCEOnly one WHEN clause for NOT MATCHED BY TARGETMERGE can be used with any table sourceA MERGE statement causes triggers to be fired onceRows affected includes total rows affected by all clausesMERGE PerformanceMERGE statement is transactionalNo explicit transaction requiredOne Pass Through TablesAt most a full outer joinMatching rows = when matchedLeft-outer join rows = when not matched by targetRight-outer join rows = when not matched by sourceMERGE and DeterminismUPDATE using a JOIN is non-deterministicIf more than one row in source matches ON clause, either/any row can be used for the UPDATEMERGE is deterministicIf more than one row in source matches ON clause, its an errorKeeping Track of DependenciesNew dependency views replace sp_dependsViews are kept in sync as changes occursys.dm_sql_referenced_entitiesLists all named entities that an object referencesExample: which objects does this stored procedure use?sys.dm_sql_referencing_entities

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Creating a new naming context in OUD

- by Sylvain Duloutre

A naming context (also known as a directory suffix) is a DN that identifies the top entry in a locally held directory hierarchy. A new naming context can be created using ODSM, the OUD gui admin console, as described in http://docs.oracle.com/cd/E29407_01/admin.111200/e22648/server_config.htm#CBDGCJGF It can also be created using the dsconfig command lione as described below: Creation of a new naming context consists in 3 steps: First create a Local Backend Workflow element (myNewDb in this exemple) , responsible for the naming context base dn, e.g o=example. dsconfig create-workflow-element \ --set base-dn:o=example \ --set enabled:true \ --type db-local-backend \ --element-name myNewDb \ --hostname <your host> \ --port <admin port> \ --bindDN cn=Directory\ Manager \ --bindPasswordFile ****** \ --no-prompt Second, create a Workflow element (workFlowForMyNewDb in this exemple) associated with the Local Backend Workflow element. WorkFlow elements are used to route LDAP requests to the appropriate database, based on the target base dn. dsconfig create-workflow \ --set base-dn:o=example \ --set enabled:true \ --set workflow-element:myNewDb \ --type generic \ --workflow-name workFlowForMyNewDb \ --hostname <your host name> \ --port <admin port>\ --bindDN cn=Directory\ Manager \ --bindPasswordFile ****** \ --no-prompt Then, the workflow element must be made visible outside of the directory, i.e added to the internal "routing table". This is done by adding the Workflow to the appropriate Network Group. A Network group is used to classify incoming client connections and route requests to workflows. dsconfig set-network-group-prop \ --group-name network-group \ --add workflow:workFlowForMyNewDb \ --hostname <your hostname> \ --port <admin port>\ --bindDN cn=Directory\ Manager \ --bindPasswordFile ****** \ --no-prompt At that stage, it is possible to import entries to the new naming context o=example.

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How to give my user permission to add/edit files on local apache server? [duplicate]

- by Logan

Possible Duplicate: How to make Apache run as current user I'm setting up my local test server again, and I seem to have forgotten how to successfully set up the LAMP server. I have installed LAMP server via tasksel command and I have configured the /var/www directory according to a guide I've found: After the lamp server installation you will need write permissions to the /var/www directory. Follow these steps to configure permissions. Add your user to the www-data group sudo usermod -a -G www-data <your user name> now add the /var/www folder to the www-data group sudo chgrp -R www-data /var/www now give write permissions to the www-data group sudo chmod -R g+w /var/www So logan user is now part of www-data group and the file/folder permissions look like the output below: logan@computer:/var/www$ ls -lart total 172 -rw-r--r-- 1 www-data www-data 1997 Oct 23 2010 wp-links-opml.php -rw-r--r-- 1 www-data www-data 3177 Nov 1 2010 wp-config-sample.php -rw-r--r-- 1 www-data www-data 3700 Jan 8 2012 wp-trackback.php -rw-r--r-- 1 www-data www-data 271 Jan 8 2012 wp-blog-header.php -rw-r--r-- 1 www-data www-data 395 Jan 8 2012 index.php -rw-r--r-- 1 www-data www-data 3522 Apr 10 2012 wp-comments-post.php -rw-r--r-- 1 www-data www-data 19929 May 6 2012 license.txt -rw-r--r-- 1 www-data www-data 18219 Sep 11 08:27 wp-signup.php -rw-r--r-- 1 www-data www-data 2719 Sep 11 16:11 xmlrpc.php -rw-r--r-- 1 www-data www-data 2718 Sep 23 12:57 wp-cron.php -rw-r--r-- 1 www-data www-data 7723 Sep 25 01:26 wp-mail.php -rw-r--r-- 1 www-data www-data 2408 Oct 26 15:40 wp-load.php -rw-r--r-- 1 www-data www-data 4663 Nov 17 10:11 wp-activate.php -rw-r--r-- 1 www-data www-data 9899 Nov 22 04:52 wp-settings.php -rw-r--r-- 1 www-data www-data 9175 Nov 29 19:57 readme.html -rw-r--r-- 1 www-data www-data 29310 Nov 30 08:40 wp-login.php drwxr-xr-x 14 root root 4096 Dec 24 17:41 .. drwx------ 9 www-data www-data 4096 Dec 26 16:11 wp-admin drwx------ 9 www-data www-data 4096 Dec 26 16:11 wp-includes -rw-rw-rw- 1 www-data www-data 3448 Dec 26 16:14 wp-config.php drwxrwxr-x 5 www-data www-data 4096 Dec 26 16:14 . drwx------ 6 www-data www-data 4096 Dec 26 16:19 wp-content Things work perfectly at http://localhost, I can view the website fine. The thing with this is that I will be working on a plugin for wordpress and I don't want to deal with separate owners under www directory to create or modify files/folders. When I give my user the ownership of /var/www recursively as logan:www-data I can create/modify files but cannot view the http://localhost. I get a Forbidden error. I'm assuming that this is because of the Apache's configuration? Which one is healthier or easier considering this is just a local test website, configuring apache to give user logan to view website and chmod /var/www logan:logan so that I can create files etc. without any sudo commands; or is it easier to configure user groups to get www-data user to act like my logan user? (Idk how that's possible, maybe putting www-data user under logan group?) Please shed some light to this subject. All I want is to be able to create/modifiy files under my user, and yet to be able to successfully view http://localhost I appreciate the help!

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How can I best implement 'cache until further notice' with memcache in multiple tiers?

- by ajreal

the term "client" used here is not referring to client's browser, but client server Before cache workflow 1. client make a HTTP request --> 2. server process --> 3. store parsed results into memcache for next use (cache indefinitely) --> 4. return results to client --> 5. client get the result, store into client's local memcache with TTL After cache workflow 1. another client make a HTTP request --> 2. memcache found return memcache results to client --> 3. client get the result, store into client's local memcache with TTL TTL = time to live Is possible for me to know when the data was updated, and to expire relevant memcache(s) accordingly. However, the pitfalls on client site cache TTL Any data update before the TTL is not pick-up by client memcache. In reverse manner, where there is no update, client memcache still expire after the TTL First request (or concurrent requests) after cache TTL will get throttle as it need to repeat the "Before cache workflow" In the event where client require several HTTP requests on a single web page, it could be very bad in performance. Ideal solution should be client to cache indefinitely until further notice. Here are the three proposals about futher notice Proposal 1 : Make use on HTTP header (current implementation) 1. client sent HTTP request last modified time header 2. server check if last data modified time=last cache time return status 304 3. client based on header to decide further processing GOOD? ---- - save some parsing for client - lesser data transfer BAD? ---- - fire a HTTP request is still slow - server end still need to process lots of requests Proposal 2 : Consistently issue a HTTP request to check all data group last modified time 1. client fire a HTTP request 2. server to return last modified time for all data group 3. client compare local last cache time with the result 4. if data group last cache time < server last modified time then request again for that data group only GOOD? ---- - only fetch what is no up-to-date - less requests for server BAD? ---- - every web page require a HTTP request Proposal 3 : Tell client when new data is available (Push) 1. when server end notice there is a change on a data group 2. notify clients on the changes 3. help clients to fetch again data 4. then reset client local memcache after data is parsed GOOD? ---- - let the cache act/behave like a true cache BAD? ---- - encourage race condition My preference is on proposal 3, and something like Gearman could be ideal Where there is a change, Gearman server to sent the task to multiple clients (workers). Am I crazy? (I know my first question is a bit crazy)

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FOSUserBundle override mapping to remove need for username

- by musoNic80

I want to remove the need for a username in the FOSUserBundle. My users will login using an email address only and I've added real name fields as part of the user entity. I realised that I needed to redo the entire mapping as described here. I think I've done it correctly but when I try to submit the registration form I get the error: "Only field names mapped by Doctrine can be validated for uniqueness." The strange thing is that I haven't tried to assert a unique constraint to anything in the user entity. Here is my full user entity file: <?php // src/MyApp/UserBundle/Entity/User.php namespace MyApp\UserBundle\Entity; use FOS\UserBundle\Model\User as BaseUser; use Doctrine\ORM\Mapping as ORM; use Symfony\Component\Validator\Constraints as Assert; /** * @ORM\Entity * @ORM\Table(name="depbook_user") */ class User extends BaseUser { /** * @ORM\Id * @ORM\Column(type="integer") * @ORM\GeneratedValue(strategy="AUTO") */ protected $id; /** * @ORM\Column(type="string", length=255) * * @Assert\NotBlank(message="Please enter your first name.", groups={"Registration", "Profile"}) * @Assert\MaxLength(limit="255", message="The name is too long.", groups={"Registration", "Profile"}) */ protected $firstName; /** * @ORM\Column(type="string", length=255) * * @Assert\NotBlank(message="Please enter your last name.", groups={"Registration", "Profile"}) * @Assert\MaxLength(limit="255", message="The name is too long.", groups={"Registration", "Profile"}) */ protected $lastName; /** * @ORM\Column(type="string", length=255) * * @Assert\NotBlank(message="Please enter your email address.", groups={"Registration", "Profile"}) * @Assert\MaxLength(limit="255", message="The name is too long.", groups={"Registration", "Profile"}) * @Assert\Email(groups={"Registration"}) */ protected $email; /** * @ORM\Column(type="string", length=255, name="email_canonical", unique=true) */ protected $emailCanonical; /** * @ORM\Column(type="boolean") */ protected $enabled; /** * @ORM\Column(type="string") */ protected $salt; /** * @ORM\Column(type="string") */ protected $password; /** * @ORM\Column(type="datetime", nullable=true, name="last_login") */ protected $lastLogin; /** * @ORM\Column(type="boolean") */ protected $locked; /** * @ORM\Column(type="boolean") */ protected $expired; /** * @ORM\Column(type="datetime", nullable=true, name="expires_at") */ protected $expiresAt; /** * @ORM\Column(type="string", nullable=true, name="confirmation_token") */ protected $confirmationToken; /** * @ORM\Column(type="datetime", nullable=true, name="password_requested_at") */ protected $passwordRequestedAt; /** * @ORM\Column(type="array") */ protected $roles; /** * @ORM\Column(type="boolean", name="credentials_expired") */ protected $credentialsExpired; /** * @ORM\Column(type="datetime", nullable=true, name="credentials_expired_at") */ protected $credentialsExpiredAt; public function __construct() { parent::__construct(); // your own logic } /** * @return string */ public function getFirstName() { return $this->firstName; } /** * @return string */ public function getLastName() { return $this->lastName; } /** * Sets the first name. * * @param string $firstname * * @return User */ public function setFirstName($firstname) { $this->firstName = $firstname; return $this; } /** * Sets the last name. * * @param string $lastname * * @return User */ public function setLastName($lastname) { $this->lastName = $lastname; return $this; } } I've seen various suggestions about this but none of the suggestions seem to work for me. The FOSUserBundle docs are very sparse about what must be a very common request.

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