Re: t5: Snow Leopard upgrade?
Hello, Leopard has Java 64 bit as well. If I open programs - service programs (name might be different, I translated the name) - Java, I can see Java 6 - 64 bit, 6 - 32 bit, 5 - 64 bit, 5 - 32 bit, 1.4 - 32 bit -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de Angelo Chen schrieb: thanks for the quick response. currently, I compiled the program under Tiger's java which is 1.5, but the java runtime in the deployed server is 1.6, it works quite well. Howard Lewis Ship wrote: Hard to say; there's been some issues with Javassist and Java 6 not meshing together very well. On Thu, Sep 10, 2009 at 8:56 PM, Angelo Chen angelochen...@yahoo.com.hkwrote: Hi, Snow Leopard comes with 64 bit java 6, programs compiled under that compatible with Tapestry 5 binary from the apache site? Thanks, Angelo -- View this message in context: http://www.nabble.com/t5%3A-Snow-Leopard-upgrade--tp25394678p25394678.html Sent from the Tapestry - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org -- Howard M. Lewis Ship Creator of Apache Tapestry The source for Tapestry training, mentoring and support. Contact me to learn how I can get you up and productive in Tapestry fast! (971) 678-5210 http://howardlewisship.com - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Tapestry Training in Frankfurt, Germany: Nov 23-25
Hello, just a note. The price of 1300 EUR is excluding VAT. VAT is 19 % in Germany. -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de Howard Lewis Ship schrieb: Sebastian Hennebrüder and I have been working on a plan to bring open-enrollment Tapestry training to Europe! We are planning on offering training in Frankfurt, Germany on Nov 23-25. This is my three-day, hands-on Tapestry workshop, which I normally teach on-site for specific clients. Recent clients include ProQuest, Ioko, Chess, and Reach-U. The training is fully described on my home pagehttp://howardlewisship.com/training.html . I strongly believe that, when it comes to technology, people *learn through their fingertips* . To that aim, I teach Tapestry as an interactive * workshop* consisting of ten labs. Each lab teaches a different aspect of Tapestry; a particular component or set of components, or a particular challenge developers are likely to face. Each lab starts with a 20 to 30 minute presentation that will outline the goals of the lab: the issues to be tackled, the components to be covered, the special challenges to be explored. The labs themselves consist of an Eclipse project and a partially working Tapestry application (usually, just a single page). The goal is to fix the application, by adding and configuring components, and by writing small amounts of Java code. For the more complex labs, the work is broken up into smaller stages. Each lab includes a *cheat sheet* to ensure that no one gets too frustrated. This Workshop approach is a way for me to gently lead people into the way of Tapestry, and to help developers understand exactly what it is that Tapestry does and even how it operates internally. Although the labs are geared for developers new to web development and new to Tapestry, they are also rich with information of value to even seasoned Tapestry developers. We are currently gauging interest level. If you are DEFINITELY interested, please respond ... if we get sufficient responses, we will go forward with the class. Cost for the the course will be € 1300. This will include the training itself, plus: - Hard copies of the training materials - Morning and afternoon breaks with tea, coffee and snacks - Lunch It is suggested that you bring your own laptop computer; if not, arrangements can be made to supply you with a laptop for the duration of the class. You will need about 8 GB free on the laptop and admin rights, to install VMWare Player. - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Website concept
Agree to all of that. Fantastic analysis Sebastian. The whole documentation should revolve around Tapestry 5.x, and make it clear, an easy snapshot of what the framework looks like. Then more detailed information on demand. Michael Gerzabek wrote: Sebastian, great job! The main point is your thesis of missing 50 to 80 percent of potential new customers. What a waste of time and brainpower!!! I completely agree in selling the stuff to new users. This could as you pointed out very elegantly with rather small changes in the structure and graphical design. Anyway. What I see as an urgent need though are some high level architecture overviews like the one of the component rendering [1]. For example what was hard to learn for me was the concept of how the request ist processed. A single picture of the different cycles of render-request and action-request (and when what setup is important and how achieved) would solve a lot of problems. And I'm sure there are many other concepts as well. Kudos Sebastian! Michael [1] http://tapestry.apache.org/tapestry5.1/guide/rendering.html -- View this message in context: http://n2.nabble.com/Website-concept-tp3619168p3624505.html Sent from the Tapestry Users mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Website task 1: convincing text for index page
Hello, I spoke to Howard and we agreed on using a git repository temporarily to update the website. I have modified the skin and started to work on the menus. I would like to ask for help on working on a number of tasks, because I am not native English and I am missing features (like sales know-how) to do some things properly. If you like pick or contribute to a task. Just use the thread to discuss the task and send an email with (solved) at the end of the subject to mark it as finished. Convincing text for index page The text can be based on the existing but should be way shorter and way simpler. It addresses new technical users and new less technical users. See the user models in the PDF of the Website Concept Thread. It should be possible to read the text cross over and still get a good impression. There should be a short statement what Tapestry and then a number of convincing arguments to use it. I am looking forward to any kind of contributions. **Documentation Format** The documentation is build using Maven with a modified skin. The pages should be in the XDoc format of doxia. Here is a description http://maven.apache.org/doxia/references/xdoc-format.html The pages are located in src/site/xdoc . You can always copy the base.xml to a new file **How to download the documentation?** You need to have git installed. git clone http://dev.laliluna.de/public/tapestry-website.git/ tapestry-website In the root of the documentation you can find a modified skin. You can install it into your local maven repository using mvn install:install-file -Dfile=maven-skin-1.2.S.jar -DgroupId=org.apache.tapestry -DartifactId=maven-skin -Dversion=1.2.S -Dpackaging=jar -DcreateChecksum=true After this you can use mvn clean mvn site to build the documentation **Sending patches, changes ** You can send me just mails with plain text or a git patch. A quick tutorial on using git is here http://www.kernel.org/pub/software/scm/git/docs/v1.6.3/everyday.html You are a Individual Developer (Participant) -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Website task 2: describing the features
Hello, there is a features pages in the about section of the new website. We need a new description on main features there. The text can be more technical then the text on the front page but it should be still understandable for an average new user or a new user with less technical interest (project manager, CTO). Consider to describe the goal first and then the technical explanation. good: is very scalable. Because a page pool is used, which can be adapted to production needs. ... bad: has a page pooling feature, binding expression can be marked as cacheable or not ... Keep in mind that new users are addressed. They don't even understand the word binding expression Some information are here http://tapestry.apache.org/tapestry5.1/ I am looking forward to any kind of contributions. -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Website task 3: Chosen tutorial or articles
Hello, there is a Chosen tutorial or articles page in the getting started area. We need to choose a number of uptodate tutorials and articles. 3-7 not more. This section targets the technical interested new user. I am looking forward to any kind of contributions and respond with the (solved) postfix in the subject, if this is done. -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Website task 4: Maven configuration
Hello, there is a Maven configuration page in the Download section. It should describe, how to prepare Maven to use Tapestry in a project. It might take care of the modules, show a minimal configuration and things you need for Spring or Hibernate integration. This section targets the technical interested new user and existing users. I am looking forward to any kind of contributions and respond with the (solved) postfix in the subject, if this is done. -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Dynamically creating submit buttons, how to call submit methods?
Thiago H. de Paula Figueiredo wrote:
t:loop t:source=objetcs t:value=current t:formState=iteration
t:submit t:id=toggleState t:context=current/
/t:loop
This will not work, the id has to be unique.
You could annotate your event handler method with
@OnEvent(EventConstants.SELECTED) and use the context to disambiguate
between them.
I tried it and at first all seemed work. But then I recognized that each
time the system behaves like I pressed the _last_ button. The context is
always the same, regardless of which button I press.
My code:
input t:type=submit t:context=[firstObject, secondObject]/
@OnEvent(EventConstants.SELECTED)
public void onSelectedFromEditButton(Object1 first, Object2 second) {
...
}
Regards
Stephan
-
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Website task 5: Third party libraries and components
Hello, there is a Third party library page in the Extensions and modules section It should list third party libraries and components. I am not sure if the section (scroll down) on http://tapestry.apache.org/index.html is still up to date. Could someone check the list and complete it with things, we have on T360 and google. This section targets all users and descriptions should be not to technical (if not required) I am looking forward to any kind of contributions and respond with the (solved) postfix in the subject, if this is done. -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Website task 1: convincing text for index page
I'm wondering, why not use github.com ? It would be much easier: - for ppl to fork into their own repo - for you to gather all available edits/changes - for different contributors to collaborate with each other (and not directly with you, i.e. for specific translations, or subtasks) On Fri, Sep 11, 2009 at 2:23 PM, Sebastian Hennebrueder use...@laliluna.de wrote: Hello, I spoke to Howard and we agreed on using a git repository temporarily to update the website. I have modified the skin and started to work on the menus. I would like to ask for help on working on a number of tasks, because I am not native English and I am missing features (like sales know-how) to do some things properly. If you like pick or contribute to a task. Just use the thread to discuss the task and send an email with (solved) at the end of the subject to mark it as finished. Convincing text for index page The text can be based on the existing but should be way shorter and way simpler. It addresses new technical users and new less technical users. See the user models in the PDF of the Website Concept Thread. It should be possible to read the text cross over and still get a good impression. There should be a short statement what Tapestry and then a number of convincing arguments to use it. I am looking forward to any kind of contributions. **Documentation Format** The documentation is build using Maven with a modified skin. The pages should be in the XDoc format of doxia. Here is a description http://maven.apache.org/doxia/references/xdoc-format.html The pages are located in src/site/xdoc . You can always copy the base.xml to a new file **How to download the documentation?** You need to have git installed. git clone http://dev.laliluna.de/public/tapestry-website.git/ tapestry-website In the root of the documentation you can find a modified skin. You can install it into your local maven repository using mvn install:install-file -Dfile=maven-skin-1.2.S.jar -DgroupId=org.apache.tapestry -DartifactId=maven-skin -Dversion=1.2.S -Dpackaging=jar -DcreateChecksum=true After this you can use mvn clean mvn site to build the documentation **Sending patches, changes ** You can send me just mails with plain text or a git patch. A quick tutorial on using git is here http://www.kernel.org/pub/software/scm/git/docs/v1.6.3/everyday.html You are a Individual Developer (Participant) -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org -- Andreas Andreou - andy...@apache.org - http://blog.andyhot.gr Tapestry / Tacos developer Open Source / JEE Consulting - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Dynamically creating submit buttons, how to call submit methods?
Stephan Windmüller wrote: I tried it and at first all seemed work. But then I recognized that each time the system behaves like I pressed the _last_ button. The context is always the same, regardless of which button I press. Hm, the above behaviour might be related to this thread: http://www.nabble.com/5.1.0.1-SNAPSHOT-submit-context-not-workin-in-a-loop-td22379936.html Regards Stephan - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Website task 1: convincing text for index page
Andreas Andreou schrieb: I'm wondering, why not use github.com ? Because setting up a temporary repository consist of two commands for me ssh lali initgit tapestry-website.git I don't have a githup account and the repository has a temporarily nature as well It would be much easier: - for ppl to fork into their own repo - for you to gather all available edits/changes - for different contributors to collaborate with each other (and not directly with you, i.e. for specific translations, or subtasks) On Fri, Sep 11, 2009 at 2:23 PM, Sebastian Hennebrueder use...@laliluna.de wrote: Hello, I spoke to Howard and we agreed on using a git repository temporarily to update the website. I have modified the skin and started to work on the menus. I would like to ask for help on working on a number of tasks, because I am not native English and I am missing features (like sales know-how) to do some things properly. If you like pick or contribute to a task. Just use the thread to discuss the task and send an email with (solved) at the end of the subject to mark it as finished. Convincing text for index page The text can be based on the existing but should be way shorter and way simpler. It addresses new technical users and new less technical users. See the user models in the PDF of the Website Concept Thread. It should be possible to read the text cross over and still get a good impression. There should be a short statement what Tapestry and then a number of convincing arguments to use it. I am looking forward to any kind of contributions. **Documentation Format** The documentation is build using Maven with a modified skin. The pages should be in the XDoc format of doxia. Here is a description http://maven.apache.org/doxia/references/xdoc-format.html The pages are located in src/site/xdoc . You can always copy the base.xml to a new file **How to download the documentation?** You need to have git installed. git clone http://dev.laliluna.de/public/tapestry-website.git/ tapestry-website In the root of the documentation you can find a modified skin. You can install it into your local maven repository using mvn install:install-file -Dfile=maven-skin-1.2.S.jar -DgroupId=org.apache.tapestry -DartifactId=maven-skin -Dversion=1.2.S -Dpackaging=jar -DcreateChecksum=true After this you can use mvn clean mvn site to build the documentation **Sending patches, changes ** You can send me just mails with plain text or a git patch. A quick tutorial on using git is here http://www.kernel.org/pub/software/scm/git/docs/v1.6.3/everyday.html You are a Individual Developer (Participant) -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Website task 1: convincing text for index page
I'm confident it'll pay back the wasted minutes, esp. as ppl start to contribute Additionally, it doesn't have to be something temporal... it can go on and include the new quickstart tutorial (as discussed in previous threads) and its translations. On Fri, Sep 11, 2009 at 3:05 PM, Sebastian Hennebrueder use...@laliluna.de wrote: Andreas Andreou schrieb: I'm wondering, why not use github.com ? Because setting up a temporary repository consist of two commands for me ssh lali initgit tapestry-website.git I don't have a githup account and the repository has a temporarily nature as well It would be much easier: - for ppl to fork into their own repo - for you to gather all available edits/changes - for different contributors to collaborate with each other (and not directly with you, i.e. for specific translations, or subtasks) On Fri, Sep 11, 2009 at 2:23 PM, Sebastian Hennebrueder use...@laliluna.de wrote: Hello, I spoke to Howard and we agreed on using a git repository temporarily to update the website. I have modified the skin and started to work on the menus. I would like to ask for help on working on a number of tasks, because I am not native English and I am missing features (like sales know-how) to do some things properly. If you like pick or contribute to a task. Just use the thread to discuss the task and send an email with (solved) at the end of the subject to mark it as finished. Convincing text for index page The text can be based on the existing but should be way shorter and way simpler. It addresses new technical users and new less technical users. See the user models in the PDF of the Website Concept Thread. It should be possible to read the text cross over and still get a good impression. There should be a short statement what Tapestry and then a number of convincing arguments to use it. I am looking forward to any kind of contributions. **Documentation Format** The documentation is build using Maven with a modified skin. The pages should be in the XDoc format of doxia. Here is a description http://maven.apache.org/doxia/references/xdoc-format.html The pages are located in src/site/xdoc . You can always copy the base.xml to a new file **How to download the documentation?** You need to have git installed. git clone http://dev.laliluna.de/public/tapestry-website.git/ tapestry-website In the root of the documentation you can find a modified skin. You can install it into your local maven repository using mvn install:install-file -Dfile=maven-skin-1.2.S.jar -DgroupId=org.apache.tapestry -DartifactId=maven-skin -Dversion=1.2.S -Dpackaging=jar -DcreateChecksum=true After this you can use mvn clean mvn site to build the documentation **Sending patches, changes ** You can send me just mails with plain text or a git patch. A quick tutorial on using git is here http://www.kernel.org/pub/software/scm/git/docs/v1.6.3/everyday.html You are a Individual Developer (Participant) -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org -- Andreas Andreou - andy...@apache.org - http://blog.andyhot.gr Tapestry / Tacos developer Open Source / JEE Consulting - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Website task 1: convincing text for index page
Hello Andreas, I believe you but let's wait for input of other people. If they agree, someone can set up a repository their. As it is no consequence to change the repository you are pulling from, we can migrate their at any time. Andreas Andreou schrieb: I'm confident it'll pay back the wasted minutes, esp. as ppl start to contribute Additionally, it doesn't have to be something temporal... it can go on and include the new quickstart tutorial (as discussed in previous threads) and its translations. On Fri, Sep 11, 2009 at 3:05 PM, Sebastian Hennebrueder use...@laliluna.de wrote: Andreas Andreou schrieb: I'm wondering, why not use github.com ? Because setting up a temporary repository consist of two commands for me ssh lali initgit tapestry-website.git I don't have a githup account and the repository has a temporarily nature as well It would be much easier: - for ppl to fork into their own repo - for you to gather all available edits/changes - for different contributors to collaborate with each other (and not directly with you, i.e. for specific translations, or subtasks) On Fri, Sep 11, 2009 at 2:23 PM, Sebastian Hennebrueder use...@laliluna.de wrote: Hello, I spoke to Howard and we agreed on using a git repository temporarily to update the website. I have modified the skin and started to work on the menus. I would like to ask for help on working on a number of tasks, because I am not native English and I am missing features (like sales know-how) to do some things properly. If you like pick or contribute to a task. Just use the thread to discuss the task and send an email with (solved) at the end of the subject to mark it as finished. Convincing text for index page The text can be based on the existing but should be way shorter and way simpler. It addresses new technical users and new less technical users. See the user models in the PDF of the Website Concept Thread. It should be possible to read the text cross over and still get a good impression. There should be a short statement what Tapestry and then a number of convincing arguments to use it. I am looking forward to any kind of contributions. **Documentation Format** The documentation is build using Maven with a modified skin. The pages should be in the XDoc format of doxia. Here is a description http://maven.apache.org/doxia/references/xdoc-format.html The pages are located in src/site/xdoc . You can always copy the base.xml to a new file **How to download the documentation?** You need to have git installed. git clone http://dev.laliluna.de/public/tapestry-website.git/ tapestry-website In the root of the documentation you can find a modified skin. You can install it into your local maven repository using mvn install:install-file -Dfile=maven-skin-1.2.S.jar -DgroupId=org.apache.tapestry -DartifactId=maven-skin -Dversion=1.2.S -Dpackaging=jar -DcreateChecksum=true After this you can use mvn clean mvn site to build the documentation **Sending patches, changes ** You can send me just mails with plain text or a git patch. A quick tutorial on using git is here http://www.kernel.org/pub/software/scm/git/docs/v1.6.3/everyday.html You are a Individual Developer (Participant) -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Website task 6: Stylesheet and Colors
Hello, currently the colors of the menu and the colors of the logo are not aligned and the content boxes inside of a page are not yet updated. The accordion is done with JQuery UI. I chose south-street as theme and you can select another theme or modify it directly on the JQuery UI web site http://jqueryui.com/themeroller/ In my opinion, we don't have to change to much, just align the colors, decide if we go for a frog like green or not etc. Is there any CSS enthusiast who could work on that? -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: t5: Snow Leopard upgrade?
On Fri, Sep 11, 2009 at 6:01 AM, Howard Lewis Ship hls...@gmail.com wrote: Hard to say; there's been some issues with Javassist and Java 6 not meshing together very well. I'm under java 6 from some time now and didn't have any issues till now... -- Massimo http://meridio.blogspot.com - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: T5: AccessController Dispatcher asm.exists() not working?
On Thu, Sep 10, 2009 at 7:06 PM, neo anderson javadeveloper...@yahoo.co.uk wrote: Is this the same way as explained in http://wiki.apache.org/tapestry/Tapestry5HowToCreateADispatcher2? Or what's difference between this srategy? The chenillekit access module comes from the experience that made up the wiki doc. Cheers -- Massimo http://meridio.blogspot.com - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Website preview
Hello, I setup a preview website. You can find it here. http://tapestry.laliluna.de/ -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Website preview
I like it :-) On Fri, Sep 11, 2009 at 12:10 PM, Sebastian Hennebrueder use...@laliluna.de wrote: Hello, I setup a preview website. You can find it here. http://tapestry.laliluna.de/ -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
[T5.0.18] Out of Memory Error / Potential Leak (doesn't reduce after forced GC)
I have T5.0.18 running in Tomcat 5.5 with Java 1.5 32-bit -Xms2048m -Xmx2048m -XX:PermSize=128m -XX:MaxPermSize=128m. Configured as: tapestry.page-pool.active-window = 5 m tapestry.page-pool.hard-limit = 10 Ran a JMeter Load Test with 10 concurrent users Ramp-up time of 60 seconds 1 second between requests for a particular user Repeated 20 times The user will visit a signup page, submit a form, then get redirected to a billing page, submit that with CC info and be shown a thank you receipt page and will log out. During the test, memory usage went from around 400MB to 1.5GB. Did a forced GC from JConsole and it did not release more than 100MB at most. Re-ran the above test with 20 users instead with the same config (no re-starting of Tomcat) and the memory usage climbed to about 2GB (max Xmx) and eventually Tomcat stopped responding. After 30 minutes or so, it finally threw an OOM with a memory dump. JConsole Memory Usage http://img41.imageshack.us/img41/5303/tapestryloadtestmemoryu.jpg HPROF Memory Dump in YourKit: http://img38.imageshack.us/img38/431/memorydumpclasslist.png What's going on here? Just some info on our app. Our pages are similar to a CMS system, except that instead of static content, we serve up different components (forms, etc) for users. We use a Dispatcher and overriden LinkFactory to map seo-optimized URLs to a given Page. Many different URLs may map to the same page and the same URL may map to more than 1 page based on user's status. A given page will have multiple layouts injected into it, and each layout will have multiple components injected into it (it goes a little bit deeper than that). At runtime, a page configuration is read from the database based on the URL and user's status, and the relevant layouts and components to show are selected. Since Tapestry is limited in the way that it can only use a component that has already been injected to the page (ie. IoC can't dynamically load a component without having being referenced in the page before), each page can load a multiple different components. I can understand if this complex scenario needed a couple of hundred megs, but 2 GB? And even more worrisome, why does it not collect during garbage collection? During the whole test of 20 minutes or so, more than 6 minutes were spent in GC. Any ideas? Thoughts? - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: [T5.0.18] Out of Memory Error / Potential Leak (doesn't reduce after forced GC)
Em Fri, 11 Sep 2009 12:47:23 -0300, Dave Greggory davegregg...@yahoo.com escreveu: I have T5.0.18 running in Tomcat 5.5 with Java 1.5 32-bit -Xms2048m -Xmx2048m -XX:PermSize=128m -XX:MaxPermSize=128m. Have you tried 5.1.0.5? -- Thiago H. de Paula Figueiredo Independent Java consultant, developer, and instructor http://www.arsmachina.com.br/thiago - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: [T5.0.18] Out of Memory Error / Potential Leak (doesn't reduce after forced GC)
I applaud the efforts, but I think you really really have to upgrade to 5.1.0.5 before you can get this on anybody's radar. There's a good possibility the same wouldn't happen in it. If you are running with -server (think it may be automatically chosen if you haven't specified with that heap max) and the application is sufficiently busy, the gc wouldn't kick in until heap space is exhausted. Have you checked that you are closing db connections/returning them to to the pool properly? In any case obviously this is not right, you shouldn't need to accept memory usage of 2GB with that load. I've been able to run small db-backed Tapestry apps with a memory budget of less than 200MB. Kalle On Fri, Sep 11, 2009 at 8:47 AM, Dave Greggory davegregg...@yahoo.com wrote: I have T5.0.18 running in Tomcat 5.5 with Java 1.5 32-bit -Xms2048m -Xmx2048m -XX:PermSize=128m -XX:MaxPermSize=128m. Configured as: tapestry.page-pool.active-window = 5 m tapestry.page-pool.hard-limit = 10 Ran a JMeter Load Test with 10 concurrent users Ramp-up time of 60 seconds 1 second between requests for a particular user Repeated 20 times The user will visit a signup page, submit a form, then get redirected to a billing page, submit that with CC info and be shown a thank you receipt page and will log out. During the test, memory usage went from around 400MB to 1.5GB. Did a forced GC from JConsole and it did not release more than 100MB at most. Re-ran the above test with 20 users instead with the same config (no re-starting of Tomcat) and the memory usage climbed to about 2GB (max Xmx) and eventually Tomcat stopped responding. After 30 minutes or so, it finally threw an OOM with a memory dump. JConsole Memory Usage http://img41.imageshack.us/img41/5303/tapestryloadtestmemoryu.jpg HPROF Memory Dump in YourKit: http://img38.imageshack.us/img38/431/memorydumpclasslist.png What's going on here? Just some info on our app. Our pages are similar to a CMS system, except that instead of static content, we serve up different components (forms, etc) for users. We use a Dispatcher and overriden LinkFactory to map seo-optimized URLs to a given Page. Many different URLs may map to the same page and the same URL may map to more than 1 page based on user's status. A given page will have multiple layouts injected into it, and each layout will have multiple components injected into it (it goes a little bit deeper than that). At runtime, a page configuration is read from the database based on the URL and user's status, and the relevant layouts and components to show are selected. Since Tapestry is limited in the way that it can only use a component that has already been injected to the page (ie. IoC can't dynamically load a component without having being referenced in the page before), each page can load a multiple different components. I can understand if this complex scenario needed a couple of hundred megs, but 2 GB? And even more worrisome, why does it not collect during garbage collection? During the whole test of 20 minutes or so, more than 6 minutes were spent in GC. Any ideas? Thoughts? - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: [T5.0.18] Out of Memory Error / Potential Leak (doesn't reduce after forced GC)
Tapestry 5.1.0.5 is more efficient, but that's mostly in terms of reducing the number of temporary objects created during a single request. 392,000 instances of ComponentPageElementImpl? How many pages in your application? Say there's 15 distinct pages. 392,000 / (15 district * 10 hard limit) = 2600 components per page In fact, looking at the memory, there's 25 PageImpls, so now we're talking 15,680 components / page! That seems like a lot! I'm concerned you've fallen prey to the Uber-component anti-pattern. If you have a component that contains, in its template, 10 other components then every time you use such a component, that's 10 instances of ComponentPageElementImpl. I've seen systems that, for every field to be edited, an Uber-component is used, and the Uber-component is set up to edit any type of data, so it has a TextField, a Select, a Checkbox ... and a Grid containing a bunch of other stuff ... and so on. Thus editing the userId field of the User object claims several hundred components (instances of ComponentPageElementImpl). If you notice how BeanEditForm / BeanEditor / PropertyEditor works, the actual editing components live on a secondary page. An instance of PropertyEditor is just the one ComponentPageElementImpl instance, plus shared off screen components from the PropertyEditBlocks page (part of Tapestry's core library). If you have ten PropertyEditor components on a page, that's 10 ComponentPageElementImpl instances, not hundreds or thousands, even though there are dozens of components on the PropertyEditBlocksPage. Anyway, perhaps this is what you've done, or perhaps there's some other issue ... some cache or pool (outside of Tapestry) that is holding onto page instances even after Tapestry has discarded them. Or perhaps the memory issue is not related to Tapestry after all (though that 392,000 instances seems troublesome). On Fri, Sep 11, 2009 at 8:47 AM, Dave Greggory davegregg...@yahoo.comwrote: I have T5.0.18 running in Tomcat 5.5 with Java 1.5 32-bit -Xms2048m -Xmx2048m -XX:PermSize=128m -XX:MaxPermSize=128m. Configured as: tapestry.page-pool.active-window = 5 m tapestry.page-pool.hard-limit = 10 Ran a JMeter Load Test with 10 concurrent users Ramp-up time of 60 seconds 1 second between requests for a particular user Repeated 20 times The user will visit a signup page, submit a form, then get redirected to a billing page, submit that with CC info and be shown a thank you receipt page and will log out. During the test, memory usage went from around 400MB to 1.5GB. Did a forced GC from JConsole and it did not release more than 100MB at most. Re-ran the above test with 20 users instead with the same config (no re-starting of Tomcat) and the memory usage climbed to about 2GB (max Xmx) and eventually Tomcat stopped responding. After 30 minutes or so, it finally threw an OOM with a memory dump. JConsole Memory Usage http://img41.imageshack.us/img41/5303/tapestryloadtestmemoryu.jpg HPROF Memory Dump in YourKit: http://img38.imageshack.us/img38/431/memorydumpclasslist.png What's going on here? Just some info on our app. Our pages are similar to a CMS system, except that instead of static content, we serve up different components (forms, etc) for users. We use a Dispatcher and overriden LinkFactory to map seo-optimized URLs to a given Page. Many different URLs may map to the same page and the same URL may map to more than 1 page based on user's status. A given page will have multiple layouts injected into it, and each layout will have multiple components injected into it (it goes a little bit deeper than that). At runtime, a page configuration is read from the database based on the URL and user's status, and the relevant layouts and components to show are selected. Since Tapestry is limited in the way that it can only use a component that has already been injected to the page (ie. IoC can't dynamically load a component without having being referenced in the page before), each page can load a multiple different components. I can understand if this complex scenario needed a couple of hundred megs, but 2 GB? And even more worrisome, why does it not collect during garbage collection? During the whole test of 20 minutes or so, more than 6 minutes were spent in GC. Any ideas? Thoughts? - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org -- Howard M. Lewis Ship Creator of Apache Tapestry The source for Tapestry training, mentoring and support. Contact me to learn how I can get you up and productive in Tapestry fast! (971) 678-5210 http://howardlewisship.com
Re: [T5.0.18] Out of Memory Error / Potential Leak (doesn't reduce after forced GC)
Yes, we're using a the Uber-component pattern as you put it. As that is the only way, we can build a dynamically defined Page. Right now, we have about 8 pages, containing possibly 12 Layout components, and 29 functional components, some of which a Form Components. And those contain 4 possible Form Layouts and 13 possible Form Sub Components. A database based configuration defines what components and layouts are active or shown on each page. We have separate CMS like management system to update / edit this page configuration. Is there a different way we can accomplish the same thing? We need to maintain the flexibility to dynamically determine where in the page a component is added to or shown at all. I don't quite understand what you mean by how the BeanEditForm component works. Perhaps someone can kindly explain it to me. Thanks so much. - Original Message From: Howard Lewis Ship hls...@gmail.com To: Tapestry users users@tapestry.apache.org Sent: Friday, September 11, 2009 2:36:00 PM Subject: Re: [T5.0.18] Out of Memory Error / Potential Leak (doesn't reduce after forced GC) Tapestry 5.1.0.5 is more efficient, but that's mostly in terms of reducing the number of temporary objects created during a single request. 392,000 instances of ComponentPageElementImpl? How many pages in your application? Say there's 15 distinct pages. 392,000 / (15 district * 10 hard limit) = 2600 components per page In fact, looking at the memory, there's 25 PageImpls, so now we're talking 15,680 components / page! That seems like a lot! I'm concerned you've fallen prey to the Uber-component anti-pattern. If you have a component that contains, in its template, 10 other components then every time you use such a component, that's 10 instances of ComponentPageElementImpl. I've seen systems that, for every field to be edited, an Uber-component is used, and the Uber-component is set up to edit any type of data, so it has a TextField, a Select, a Checkbox ... and a Grid containing a bunch of other stuff ... and so on. Thus editing the userId field of the User object claims several hundred components (instances of ComponentPageElementImpl). If you notice how BeanEditForm / BeanEditor / PropertyEditor works, the actual editing components live on a secondary page. An instance of PropertyEditor is just the one ComponentPageElementImpl instance, plus shared off screen components from the PropertyEditBlocks page (part of Tapestry's core library). If you have ten PropertyEditor components on a page, that's 10 ComponentPageElementImpl instances, not hundreds or thousands, even though there are dozens of components on the PropertyEditBlocksPage. Anyway, perhaps this is what you've done, or perhaps there's some other issue ... some cache or pool (outside of Tapestry) that is holding onto page instances even after Tapestry has discarded them. Or perhaps the memory issue is not related to Tapestry after all (though that 392,000 instances seems troublesome). On Fri, Sep 11, 2009 at 8:47 AM, Dave Greggory davegregg...@yahoo.comwrote: I have T5.0.18 running in Tomcat 5.5 with Java 1.5 32-bit -Xms2048m -Xmx2048m -XX:PermSize=128m -XX:MaxPermSize=128m. Configured as: tapestry.page-pool.active-window = 5 m tapestry.page-pool.hard-limit = 10 Ran a JMeter Load Test with 10 concurrent users Ramp-up time of 60 seconds 1 second between requests for a particular user Repeated 20 times The user will visit a signup page, submit a form, then get redirected to a billing page, submit that with CC info and be shown a thank you receipt page and will log out. During the test, memory usage went from around 400MB to 1.5GB. Did a forced GC from JConsole and it did not release more than 100MB at most. Re-ran the above test with 20 users instead with the same config (no re-starting of Tomcat) and the memory usage climbed to about 2GB (max Xmx) and eventually Tomcat stopped responding. After 30 minutes or so, it finally threw an OOM with a memory dump. JConsole Memory Usage http://img41.imageshack.us/img41/5303/tapestryloadtestmemoryu.jpg HPROF Memory Dump in YourKit: http://img38.imageshack.us/img38/431/memorydumpclasslist.png What's going on here? Just some info on our app. Our pages are similar to a CMS system, except that instead of static content, we serve up different components (forms, etc) for users. We use a Dispatcher and overriden LinkFactory to map seo-optimized URLs to a given Page. Many different URLs may map to the same page and the same URL may map to more than 1 page based on user's status. A given page will have multiple layouts injected into it, and each layout will have multiple components injected into it (it goes a little bit deeper than that). At runtime, a page configuration is read from the database based on the URL and user's status, and the relevant layouts and components to show are selected. Since Tapestry is limited in the way that it can
Re: [T5.0.18] Out of Memory Error / Potential Leak (doesn't reduce after forced GC)
Upgrading to 5.1 is going to require a lot of effort since we have hacked LinkFactory, RequestSecurityManager, etc to get functionality that did not exist. But we'll certainly do it if it will solve the problem. It's just that we don't know whether we can allocate the resources to do it unless we know whether that's a potential solution to the problem. - Original Message From: Thiago H. de Paula Figueiredo thiag...@gmail.com To: Tapestry users users@tapestry.apache.org Sent: Friday, September 11, 2009 12:17:38 PM Subject: Re: [T5.0.18] Out of Memory Error / Potential Leak (doesn't reduce after forced GC) Em Fri, 11 Sep 2009 12:47:23 -0300, Dave Greggory davegregg...@yahoo.com escreveu: I have T5.0.18 running in Tomcat 5.5 with Java 1.5 32-bit -Xms2048m -Xmx2048m -XX:PermSize=128m -XX:MaxPermSize=128m. Have you tried 5.1.0.5? --Thiago H. de Paula Figueiredo Independent Java consultant, developer, and instructor http://www.arsmachina.com.br/thiago - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Website preview
Nice design. Keep on with the good work. 2009/9/11 Alfonso Quiroga alfonsose...@gmail.com: I like it :-) On Fri, Sep 11, 2009 at 12:10 PM, Sebastian Hennebrueder use...@laliluna.de wrote: Hello, I setup a preview website. You can find it here. http://tapestry.laliluna.de/ -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: [T5.0.18] Out of Memory Error / Potential Leak (doesn't reduce after forced GC)
NYC. - Original Message From: Howard Lewis Ship hls...@gmail.com To: Tapestry users users@tapestry.apache.org Sent: Friday, September 11, 2009 3:11:57 PM Subject: Re: [T5.0.18] Out of Memory Error / Potential Leak (doesn't reduce after forced GC) Although upgrading is a good idea for many reasons, I don't think it will solve your problem. You need a little re-architecting of your approach to get the component instance count back under control. Where are you located? On Fri, Sep 11, 2009 at 12:03 PM, Dave Greggory davegregg...@yahoo.comwrote: - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: [T5.0.18] Out of Memory Error / Potential Leak (doesn't reduce after forced GC)
Although upgrading is a good idea for many reasons, I don't think it will solve your problem. You need a little re-architecting of your approach to get the component instance count back under control. Where are you located? On Fri, Sep 11, 2009 at 12:03 PM, Dave Greggory davegregg...@yahoo.comwrote: Upgrading to 5.1 is going to require a lot of effort since we have hacked LinkFactory, RequestSecurityManager, etc to get functionality that did not exist. But we'll certainly do it if it will solve the problem. It's just that we don't know whether we can allocate the resources to do it unless we know whether that's a potential solution to the problem. - Original Message From: Thiago H. de Paula Figueiredo thiag...@gmail.com To: Tapestry users users@tapestry.apache.org Sent: Friday, September 11, 2009 12:17:38 PM Subject: Re: [T5.0.18] Out of Memory Error / Potential Leak (doesn't reduce after forced GC) Em Fri, 11 Sep 2009 12:47:23 -0300, Dave Greggory davegregg...@yahoo.com escreveu: I have T5.0.18 running in Tomcat 5.5 with Java 1.5 32-bit -Xms2048m -Xmx2048m -XX:PermSize=128m -XX:MaxPermSize=128m. Have you tried 5.1.0.5? --Thiago H. de Paula Figueiredo Independent Java consultant, developer, and instructor http://www.arsmachina.com.br/thiago - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org -- Howard M. Lewis Ship Creator of Apache Tapestry The source for Tapestry training, mentoring and support. Contact me to learn how I can get you up and productive in Tapestry fast! (971) 678-5210 http://howardlewisship.com
Exception handling after violation of unique constraint
Thanks for your answer, i learned a bit more of tapestry.
Now i have one more problem, not exactly related but in the same area.
I have
void onValidateForm() {
if (entity.getId().longValue() == 0l) {
league.setId(null);
}
System.out.println(OnValidateForm);
try {
_entityDAO.persist(entity);
} catch (RuntimeException ex) {
leagueForm.recordError(error); // EXCEPTION IS THROWN
- THE TEST
I'M DOING HITS THE UNIQUE CONSTRAINT
}
}
void onFailure() {
_entityDAO.abort();
System.out.println(onFailure);
}
And this is working except it doesn't refresh the form with the errors
i added on the onValidate
When i use:
Object onFailure() {
_entityDAO.abort();
System.out.println(onFailure);
return this;
}
The following exception is thrown:
Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException:
null id in pt.hi.asianconnect.entities.League entry (don't flush the
Session after an exception occurs) [at
classpath:pt/hi/asianconnect/components/generated/CreateUpdateLeague.tml,
line 12]
at
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:62)
at
org.apache.tapestry5.internal.structure.InternalComponentResourcesImpl$1.read(InternalComponentResourcesImpl.java:510)
... 119 more
Caused by: org.hibernate.AssertionFailure: null id in
pt.hi.asianconnect.entities.League entry (don't flush the Session
after an exception occurs)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:78)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:187)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:143)
at
org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:219)
at
org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99)
at
org.hibernate.event.def.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:58)
at
org.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:996)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1589)
at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:306)
at DefaultHibernateDAO.findByCriteria(DefaultHibernateDAO.java:104)
The abort method from DAO was an experiment of mine wich calls
hibernatesessionmanager.abort(). From what i understand, what happens
is when the page is to be renderered, the hibernatesessionmanager
that's used has dirty data that's why it uses
SessionImpl.autoFlushIfRequired when i'm fetching data to refill the
page, hence my experiment on calling the abort from
hibernatesessionmanger, still this doesn't do it and i don't know how
to clean data from the sessionmanager.
Ideas anyone?
One importante note, the test i'm doing implies that the my method
that saveOrUpdate the entity is hitting a unique constraint
On Thu, Sep 10, 2009 at 11:20 PM, Kalle Korhonen
kalle.o.korho...@gmail.com wrote:
You should instead try storing it onValidate. If it fails, you should
record an error and if it succeeds you should commit only in onSuccess
(but the method body can be otherwise empty).
Kalle
On Thu, Sep 10, 2009 at 2:55 PM, Bruno Santos bitbet...@gmail.com wrote:
Good evening,
I have a form using a zone and i have @CommitAfter on the
onSubmitFromEntityForm()
t:form t:id=entityForm zone=entityZone
input type=text t:type=textfield t:id=name
t:value=entity.name /
/t:form
@CommitAfter
Object onSubmitFromEntityForm() {
try {
entityDao.persist(entity);
} catch (exception ex) {
// handle exception
}
}
altough i'm handling the exception the @CommitAfter creates a new
exception since it tries to commit something that's not in transaction
due to catched exception.
How to deal with this? Is there a way to avoid the @CommitAfter to
execute ... a handler i can use? I think i can remove the @CommitAfter
but don't believe this should be first option.
-
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For
Re: Website preview - update
Hello, I tried to limit the number of menu entries to 7. The magic number of items you can overlook. I removed the 'Getting a first impression' area and moved the content into the 'About Tapestry' area. We can still make a block on the front page to help user. The user guide requires a nested navigation. My first idea, was to move it to a Tapestry sub module, which has the advantage, that we can modify the menu (remove items). I tested a kind of pure documentation sub project. This approach wasn't very nice as you have menu items of the main level (about, support, download) which suddenly disappears. You can find this effect on the current website, if you visit tapestry modules like tapestry-ioc, the tutorial etc. As a consequence, I reverted the change and moved the user guide as special item to the main area. This allows to have two sub levels in the user guide. I merged the Tapestry modules and the page for external modules into a common menu area. Furthermore, I moved the project information, which is a kind of default into 'About Tapestry'. I believe that finding the contained information (JIRA, Mailinglist, Subversion) is still intuitive. JIRA and Mailinglist can additionally found in the support area and the subversion is referenced in addition in the download area. What do you think? -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de Madtyn schrieb: Nice design. Keep on with the good work. 2009/9/11 Alfonso Quiroga alfonsose...@gmail.com: I like it :-) On Fri, Sep 11, 2009 at 12:10 PM, Sebastian Hennebrueder use...@laliluna.de wrote: Hello, I setup a preview website. You can find it here. http://tapestry.laliluna.de/ -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Exception handling after violation of unique constraint
what is your reason, that you want to persist the enity
in the validation event?
i think its more clear to persist it in the onSuccess event method
with regards
Sven Homburg
Founder of the Chenille Kit Project
http://www.chenillekit.org
2009/9/11 Bruno Santos bitbet...@gmail.com
Thanks for your answer, i learned a bit more of tapestry.
Now i have one more problem, not exactly related but in the same area.
I have
void onValidateForm() {
if (entity.getId().longValue() == 0l) {
league.setId(null);
}
System.out.println(OnValidateForm);
try {
_entityDAO.persist(entity);
} catch (RuntimeException ex) {
leagueForm.recordError(error); // EXCEPTION IS
THROWN - THE TEST
I'M DOING HITS THE UNIQUE CONSTRAINT
}
}
void onFailure() {
_entityDAO.abort();
System.out.println(onFailure);
}
And this is working except it doesn't refresh the form with the errors
i added on the onValidate
When i use:
Object onFailure() {
_entityDAO.abort();
System.out.println(onFailure);
return this;
}
The following exception is thrown:
Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException:
null id in pt.hi.asianconnect.entities.League entry (don't flush the
Session after an exception occurs) [at
classpath:pt/hi/asianconnect/components/generated/CreateUpdateLeague.tml,
line 12]
at
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:62)
at
org.apache.tapestry5.internal.structure.InternalComponentResourcesImpl$1.read(InternalComponentResourcesImpl.java:510)
... 119 more
Caused by: org.hibernate.AssertionFailure: null id in
pt.hi.asianconnect.entities.League entry (don't flush the Session
after an exception occurs)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:78)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:187)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:143)
at
org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:219)
at
org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99)
at
org.hibernate.event.def.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:58)
at
org.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:996)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1589)
at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:306)
at DefaultHibernateDAO.findByCriteria(DefaultHibernateDAO.java:104)
The abort method from DAO was an experiment of mine wich calls
hibernatesessionmanager.abort(). From what i understand, what happens
is when the page is to be renderered, the hibernatesessionmanager
that's used has dirty data that's why it uses
SessionImpl.autoFlushIfRequired when i'm fetching data to refill the
page, hence my experiment on calling the abort from
hibernatesessionmanger, still this doesn't do it and i don't know how
to clean data from the sessionmanager.
Ideas anyone?
One importante note, the test i'm doing implies that the my method
that saveOrUpdate the entity is hitting a unique constraint
On Thu, Sep 10, 2009 at 11:20 PM, Kalle Korhonen
kalle.o.korho...@gmail.com wrote:
You should instead try storing it onValidate. If it fails, you should
record an error and if it succeeds you should commit only in onSuccess
(but the method body can be otherwise empty).
Kalle
On Thu, Sep 10, 2009 at 2:55 PM, Bruno Santos bitbet...@gmail.com
wrote:
Good evening,
I have a form using a zone and i have @CommitAfter on the
onSubmitFromEntityForm()
t:form t:id=entityForm zone=entityZone
input type=text t:type=textfield t:id=name
t:value=entity.name /
/t:form
@CommitAfter
Object onSubmitFromEntityForm() {
try {
entityDao.persist(entity);
} catch (exception ex) {
// handle exception
}
}
altough i'm handling the exception the @CommitAfter creates a new
exception since it tries to commit something that's not in transaction
due to catched exception.
How to deal with this? Is there a way to avoid the @CommitAfter to
execute ... a handler i can use? I think i can remove the @CommitAfter
but don't believe this should be first option.
-
To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org
For additional commands, e-mail:
Re: Exception handling after violation of unique constraint
Hello,
Well, the reason should be that with persist in validate() i validate
that the entity that's inserted doesn't conflict with any database
constraint like in this case and the onsucess isn't fired wich in the
case a constraint is violated it doesn't seem to make sense.
Anyway, even if i use the code on the onSucess method it comes down to
the same issue, the exception is thrown whenever i try to do any
operation that requires hibernate (problem should be in
hibernatesessionmanager, not being clean).
One way i guess it could solve the problem is discarding the current
hibernatesessionmanager, invalidate it somehow, but i don't know if
that's possible.
Thanks
On Fri, Sep 11, 2009 at 10:15 PM, Sven Homburg hombu...@googlemail.com wrote:
what is your reason, that you want to persist the enity
in the validation event?
i think its more clear to persist it in the onSuccess event method
with regards
Sven Homburg
Founder of the Chenille Kit Project
http://www.chenillekit.org
2009/9/11 Bruno Santos bitbet...@gmail.com
Thanks for your answer, i learned a bit more of tapestry.
Now i have one more problem, not exactly related but in the same area.
I have
void onValidateForm() {
if (entity.getId().longValue() == 0l) {
league.setId(null);
}
System.out.println(OnValidateForm);
try {
_entityDAO.persist(entity);
} catch (RuntimeException ex) {
leagueForm.recordError(error); // EXCEPTION IS
THROWN - THE TEST
I'M DOING HITS THE UNIQUE CONSTRAINT
}
}
void onFailure() {
_entityDAO.abort();
System.out.println(onFailure);
}
And this is working except it doesn't refresh the form with the errors
i added on the onValidate
When i use:
Object onFailure() {
_entityDAO.abort();
System.out.println(onFailure);
return this;
}
The following exception is thrown:
Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException:
null id in pt.hi.asianconnect.entities.League entry (don't flush the
Session after an exception occurs) [at
classpath:pt/hi/asianconnect/components/generated/CreateUpdateLeague.tml,
line 12]
at
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:62)
at
org.apache.tapestry5.internal.structure.InternalComponentResourcesImpl$1.read(InternalComponentResourcesImpl.java:510)
... 119 more
Caused by: org.hibernate.AssertionFailure: null id in
pt.hi.asianconnect.entities.League entry (don't flush the Session
after an exception occurs)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:78)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:187)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:143)
at
org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:219)
at
org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99)
at
org.hibernate.event.def.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:58)
at
org.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:996)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1589)
at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:306)
at DefaultHibernateDAO.findByCriteria(DefaultHibernateDAO.java:104)
The abort method from DAO was an experiment of mine wich calls
hibernatesessionmanager.abort(). From what i understand, what happens
is when the page is to be renderered, the hibernatesessionmanager
that's used has dirty data that's why it uses
SessionImpl.autoFlushIfRequired when i'm fetching data to refill the
page, hence my experiment on calling the abort from
hibernatesessionmanger, still this doesn't do it and i don't know how
to clean data from the sessionmanager.
Ideas anyone?
One importante note, the test i'm doing implies that the my method
that saveOrUpdate the entity is hitting a unique constraint
On Thu, Sep 10, 2009 at 11:20 PM, Kalle Korhonen
kalle.o.korho...@gmail.com wrote:
You should instead try storing it onValidate. If it fails, you should
record an error and if it succeeds you should commit only in onSuccess
(but the method body can be otherwise empty).
Kalle
On Thu, Sep 10, 2009 at 2:55 PM, Bruno Santos bitbet...@gmail.com
wrote:
Good evening,
I have a form using a zone and i have @CommitAfter on the
onSubmitFromEntityForm()
t:form t:id=entityForm zone=entityZone
input type=text t:type=textfield t:id=name
Re: Exception handling after violation of unique constraint
Em Fri, 11 Sep 2009 18:30:34 -0300, Bruno Santos bitbet...@gmail.com escreveu: Hello, Hi! Well, the reason should be that with persist in validate() i validate that the entity that's inserted doesn't conflict with any database constraint like in this case and the onsucess isn't fired wich in the case a constraint is violated it doesn't seem to make sense. IMHO, you have to write code to do that (query the database if needed) intead of sending data to the database and expect it to raise erros to you. IMHO, you should never write to your datastore in onValidate(). -- Thiago H. de Paula Figueiredo Independent Java consultant, developer, and instructor http://www.arsmachina.com.br/thiago - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Fwd: Exception handling after violation of unique constraint
Hit wrong button i guess, sent message only to Sven. Sorry
-- Forwarded message --
From: Bruno Santos
Date: Fri, Sep 11, 2009 at 11:19 PM
Subject: Re: Exception handling after violation of unique constraint
First i like to thank you (both) for your patience and help.
Well, not the solution i was looking for but i guess it solves some
issues, totally agree with it and certainly will use it.
However, It doesn't solved non checked exceptions hibernate might
throw, like constraints that are forgotten, or other DML issues. And,
production wise, what happens is user just staring to the page waiting
for it to do something, giving some feedback and nothing happens.
Isn't there a catch all exception and present user some feedback
option? Or an option like don't use this hibernatesessionmanager
because it's invalid option?
Regards
On Fri, Sep 11, 2009 at 10:58 PM, Sven Homburg hombu...@googlemail.com wrote:
i think a good way for prevent doublettes
in you database is by using an Example-Query:
http://docs.jboss.org/hibernate/stable/core/reference/en/html/querycriteria.html#querycriteria-examples
with regards
Sven Homburg
Founder of the Chenille Kit Project
http://www.chenillekit.org
2009/9/11 Bruno Santos bitbet...@gmail.com
Hello,
Well, the reason should be that with persist in validate() i validate
that the entity that's inserted doesn't conflict with any database
constraint like in this case and the onsucess isn't fired wich in the
case a constraint is violated it doesn't seem to make sense.
Anyway, even if i use the code on the onSucess method it comes down to
the same issue, the exception is thrown whenever i try to do any
operation that requires hibernate (problem should be in
hibernatesessionmanager, not being clean).
One way i guess it could solve the problem is discarding the current
hibernatesessionmanager, invalidate it somehow, but i don't know if
that's possible.
Thanks
On Fri, Sep 11, 2009 at 10:15 PM, Sven Homburg hombu...@googlemail.com
wrote:
what is your reason, that you want to persist the enity
in the validation event?
i think its more clear to persist it in the onSuccess event method
with regards
Sven Homburg
Founder of the Chenille Kit Project
http://www.chenillekit.org
2009/9/11 Bruno Santos bitbet...@gmail.com
Thanks for your answer, i learned a bit more of tapestry.
Now i have one more problem, not exactly related but in the same area.
I have
void onValidateForm() {
if (entity.getId().longValue() == 0l) {
league.setId(null);
}
System.out.println(OnValidateForm);
try {
_entityDAO.persist(entity);
} catch (RuntimeException ex) {
leagueForm.recordError(error); // EXCEPTION IS
THROWN - THE TEST
I'M DOING HITS THE UNIQUE CONSTRAINT
}
}
void onFailure() {
_entityDAO.abort();
System.out.println(onFailure);
}
And this is working except it doesn't refresh the form with the errors
i added on the onValidate
When i use:
Object onFailure() {
_entityDAO.abort();
System.out.println(onFailure);
return this;
}
The following exception is thrown:
Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException:
null id in pt.hi.asianconnect.entities.League entry (don't flush the
Session after an exception occurs) [at
classpath:pt/hi/asianconnect/components/generated/CreateUpdateLeague.tml,
line 12]
at
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:62)
at
org.apache.tapestry5.internal.structure.InternalComponentResourcesImpl$1.read(InternalComponentResourcesImpl.java:510)
... 119 more
Caused by: org.hibernate.AssertionFailure: null id in
pt.hi.asianconnect.entities.League entry (don't flush the Session
after an exception occurs)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:78)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:187)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:143)
at
org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:219)
at
org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99)
at
org.hibernate.event.def.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:58)
at
org.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:996)
at
Re: Problem with ZoneUpdater in a component
That's right. ZoneUpdater works fine in a page, but not in a component. Here is ZoneUpdater in a page, working fine even when the field becomes empty or spaces:: http://jumpstart.doublenegative.com.au:8080/jumpstart/examples/javascript/ajaxonevent Here is ZoneUpdater in a component, not working when the field becomes empty or spaces: http://jumpstart.doublenegative.com.au:8080/jumpstart/examples/javascript/ajaxcomponents1 Does anyone know why? Geoff On 11/09/2009, at 1:02 PM, Kalle Korhonen wrote: Yes, but I guess Geoff was asking why the same keyup event works fine on the page, including non-printing chars. Kalle On Thu, Sep 10, 2009 at 6:17 PM, Thiago H. de Paula Figueiredo thiag...@gmail.com wrote: Playing with them a little, it seems to me that the keyup event ignores non-printing chars. Try typing some spaces: nothing happens. Then type any letter: the AJAX update is triggered. Have you tried the change event? -- Thiago H. de Paula Figueiredo Consultor, desenvolvedor e instrutor em Java http://www.arsmachina.com.br/thiago - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Website preview - update 2 - WARNING to core committer
Hello, I have integrated some documentation files from the tapestry-project/src/site into the new documentation. As a consequence, we need to take care that those files are not updated or changes are merged into the new docs. I used revision r811842 to copy the tutorial, faq, deployment-notes for app servers, release-notes, upgrade-notes Open content is the user guide contribution pages and the pages from the website tasks -- Best Regards / Viele Grüße Sebastian Hennebrueder - Software Developer and Trainer for Hibernate / Java Persistence http://www.laliluna.de Sebastian Hennebrueder schrieb: Hello, I tried to limit the number of menu entries to 7. The magic number of items you can overlook. I removed the 'Getting a first impression' area and moved the content into the 'About Tapestry' area. We can still make a block on the front page to help user. The user guide requires a nested navigation. My first idea, was to move it to a Tapestry sub module, which has the advantage, that we can modify the menu (remove items). I tested a kind of pure documentation sub project. This approach wasn't very nice as you have menu items of the main level (about, support, download) which suddenly disappears. You can find this effect on the current website, if you visit tapestry modules like tapestry-ioc, the tutorial etc. As a consequence, I reverted the change and moved the user guide as special item to the main area. This allows to have two sub levels in the user guide. I merged the Tapestry modules and the page for external modules into a common menu area. Furthermore, I moved the project information, which is a kind of default into 'About Tapestry'. I believe that finding the contained information (JIRA, Mailinglist, Subversion) is still intuitive. JIRA and Mailinglist can additionally found in the support area and the subversion is referenced in addition in the download area. What do you think? - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Exception handling after violation of unique constraint
I'm using the plain hibernate Session (shadow) and the pattern works
great for me. But I think your problem is actually in (don't flush
the
Session after an exception occurs). You are doing something odd since
you need to nullify the id. For a new object, the id should normally
be null. Tapestry is already thinking it's a previously persisted
entity.
Kalle
On Fri, Sep 11, 2009 at 2:30 PM, Bruno Santos bitbet...@gmail.com wrote:
Hello,
Well, the reason should be that with persist in validate() i validate
that the entity that's inserted doesn't conflict with any database
constraint like in this case and the onsucess isn't fired wich in the
case a constraint is violated it doesn't seem to make sense.
Anyway, even if i use the code on the onSucess method it comes down to
the same issue, the exception is thrown whenever i try to do any
operation that requires hibernate (problem should be in
hibernatesessionmanager, not being clean).
One way i guess it could solve the problem is discarding the current
hibernatesessionmanager, invalidate it somehow, but i don't know if
that's possible.
Thanks
On Fri, Sep 11, 2009 at 10:15 PM, Sven Homburg hombu...@googlemail.com
wrote:
what is your reason, that you want to persist the enity
in the validation event?
i think its more clear to persist it in the onSuccess event method
with regards
Sven Homburg
Founder of the Chenille Kit Project
http://www.chenillekit.org
2009/9/11 Bruno Santos bitbet...@gmail.com
Thanks for your answer, i learned a bit more of tapestry.
Now i have one more problem, not exactly related but in the same area.
I have
void onValidateForm() {
if (entity.getId().longValue() == 0l) {
league.setId(null);
}
System.out.println(OnValidateForm);
try {
_entityDAO.persist(entity);
} catch (RuntimeException ex) {
leagueForm.recordError(error); // EXCEPTION IS
THROWN - THE TEST
I'M DOING HITS THE UNIQUE CONSTRAINT
}
}
void onFailure() {
_entityDAO.abort();
System.out.println(onFailure);
}
And this is working except it doesn't refresh the form with the errors
i added on the onValidate
When i use:
Object onFailure() {
_entityDAO.abort();
System.out.println(onFailure);
return this;
}
The following exception is thrown:
Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException:
null id in pt.hi.asianconnect.entities.League entry (don't flush the
Session after an exception occurs) [at
classpath:pt/hi/asianconnect/components/generated/CreateUpdateLeague.tml,
line 12]
at
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:62)
at
org.apache.tapestry5.internal.structure.InternalComponentResourcesImpl$1.read(InternalComponentResourcesImpl.java:510)
... 119 more
Caused by: org.hibernate.AssertionFailure: null id in
pt.hi.asianconnect.entities.League entry (don't flush the Session
after an exception occurs)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:78)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:187)
at
org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:143)
at
org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:219)
at
org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99)
at
org.hibernate.event.def.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:58)
at
org.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:996)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1589)
at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:306)
at DefaultHibernateDAO.findByCriteria(DefaultHibernateDAO.java:104)
The abort method from DAO was an experiment of mine wich calls
hibernatesessionmanager.abort(). From what i understand, what happens
is when the page is to be renderered, the hibernatesessionmanager
that's used has dirty data that's why it uses
SessionImpl.autoFlushIfRequired when i'm fetching data to refill the
page, hence my experiment on calling the abort from
hibernatesessionmanger, still this doesn't do it and i don't know how
to clean data from the sessionmanager.
Ideas anyone?
One importante note, the test i'm doing implies that the my method
that saveOrUpdate the entity is hitting a unique constraint
On Thu, Sep 10, 2009 at 11:20 PM, Kalle Korhonen
kalle.o.korho...@gmail.com wrote:
You should instead try storing it onValidate. If
Re: Exception handling after violation of unique constraint
On Fri, Sep 11, 2009 at 3:05 PM, Thiago H. de Paula Figueiredo thiag...@gmail.com wrote: Em Fri, 11 Sep 2009 18:30:34 -0300, Bruno Santos bitbet...@gmail.com IMHO, you have to write code to do that (query the database if needed) Well that doesn't do anything else except merely lowers the probability. intead of sending data to the database and expect it to raise erros to you. IMHO, you should never write to your datastore in onValidate(). Interesting - I happen to think it's a great pattern to follow. You try to save and then roll back if it didn't work out - that's what the transaction management is for and Tapestry gives you a very nice way to accomplish this easily. If you only save in onSuccess you have to decide yourself whether you want to commit or abort, especially if multiple objects are involved and can't easily communicate back to the user what the error was (if he was trying to submit a form). How would you do this? Kalle - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Exception handling after violation of unique constraint
Em Fri, 11 Sep 2009 23:11:59 -0300, Kalle Korhonen kalle.o.korho...@gmail.com escreveu: Interesting - I happen to think it's a great pattern to follow. You try to save and then roll back if it didn't work out - that's what the transaction management is for and Tapestry gives you a very nice way to accomplish this easily. I think onValidate() is for validation, the data store should only be changed (or attepted to be changed) when validation succeeds and controller classes (business rules tier) should deal with transactions, not Tapestry-related code (nor any UI code). I write code following the three-tiers architecture and the separation of concerns philosphy strictly. If you only save in onSuccess you have to decide yourself whether you want to commit or abort,especially if multiple objects are involved and can't easily communicate back to the user what the error was (if he was trying to submit a form). How would you do this? My approach is to write code to check any consistence error before sending data to the store. This way, the only errors left are not recoverable (not related to business logic)and a generic error message is shown. I love checks buit int the database, but I don't use them to do validation, just to make sure no inconsistent data is written. -- Thiago H. de Paula Figueiredo Independent Java consultant, developer, and instructor http://www.arsmachina.com.br/thiago - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
Re: Exception handling after violation of unique constraint
On Fri, Sep 11, 2009 at 7:26 PM, Thiago H. de Paula Figueiredo thiag...@gmail.com wrote: Em Fri, 11 Sep 2009 23:11:59 -0300, Kalle Korhonen kalle.o.korho...@gmail.com escreveu: I think onValidate() is for validation, the data store should only be changed (or attepted to be changed) when validation succeeds and controller classes (business rules tier) should deal with transactions, not Tapestry-related code (nor any UI code). I write code following the three-tiers architecture and the separation of concerns philosphy strictly. Ok I see where you are coming from. I'm not a purist - I typically do the least amount of work up front and try to avoid the extra layer of indirection whenever possible. Tapestry offers a fairly clean separation of logic and UI concerns straight-up and unless I need a separate business layer (say if I had a completely different interface to the same data), I don't add it in automatically. But I totally understand your point of view - it's more in line of JEE/EJB architecture and offers its own benefits. Kalle - To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org For additional commands, e-mail: users-h...@tapestry.apache.org
