5th release of myfaces-extensions-validator

The Apache MyFaces team is pleased to announce the 5th release of Apache MyFaces Extensions Validator (aka ExtVal).

[myfaces] setup of codi and extval

in the last weeks i saw a lot of users looking for information about setting up and/or configuring extval and/or codi.

the simple answer: both don't required configuration by default.
zero config allows you to add the jar files you would like to use to your project and that's it.
(in case of codi you have to ensure that you have configured the cdi implementation of your choice correctly. in case of the bv module of extval, you have to ensure that you added the bv implementation of your choice.)

information about the libs is available in the corresponding wiki which is liked on the official website of each project. please check the wiki and/or send a mail to the mailing list.

myfaces extval release news r3 -> r4

these slides give a short overview of the most important new features of the 4th release of myfaces extval.

MyFaces Extensions Validator r4 News

4th release of myfaces-extensions-validator

The Apache MyFaces team is pleased to announce the 4th release of Apache MyFaces Extensions Validator (aka ExtVal).

new myfaces-extval logo

[infra] myfaces extensions meet dvcs

it's getting easier for the community to contribute to myfaces-extensions *!

now we have official git mirrors:

https://github.com/apache/myfaces-extval

and

https://github.com/apache/myfaces-extcdi

as well as inofficial mercurial mirrors (hg isn't supported by the asf):

https://bitbucket.org/os890/extval-milestones/

and

https://bitbucket.org/os890/codi-milestones/

in case of myfaces-extensions * the mercurial repositories provide an additional feature. early adaptors can request an inofficial (external) milestone at any time. it's easier to handle issues compared to nightly builds.

dvcs like mercurial and git allow easy forking of repositories and experimenting with new features. with features like squash it's very easy to donate the result of your feature-branch!

so let's get started: fork -> experiment -> donate (your patch)!

[javaone] myfaces extval and myfaces codi meet j1 2010

that's nice! matthias and ali presented myfaces at j1 2010. one part of the presentation was myfaces extval (e.g. [1] [2]) and a second part was about myfaces codi (e.g. [1] [2]). it was the first preview of myfaces codi at a java conference.

[benchmark] myfaces extval

after some performance improvements (see EXTVAL-80) i created a benchmark for the bean-validation (jsr-303) integration module for extval r3 and r4m3. as you know the results depend on a lot of parameters. anyway, the following chart should give you a first impression about the performance improvements. on my system i can reproduce the results (tolerance: ~2 ms). the benchmark invokes the validation for a component 1000 times. the value-binding points to a property which hosts one bv-constraint. the benchmark was started 3 times and the chart shows the rounded average of 10 validations (just because it's more interesting than the validation of 1000 ui components).

furthermore, the chart shows the impact of 2 optimizations described in a first draft for advanced extval/bv topics. optimization #1 just deregisters the validation interceptor which allows to create any kind of custom annotations for jsf validation (it's the base implementation of the property-validation module). optimization #2 deregisters the implementation of EXTVAL-83 - one of the new features available in r4+.

[preview] early preview of the 4th release

the current milestone already offers a lot of the features which will be available in the 4th release. the 4th release will introduce new features for the validation modules as well as some performance improvements and an improved jsf 2 support. until the next release, we will also improve the documentation. so it will take some time to get out the next version of extval. anyway, the current milestone is already quite stable and used in several applications out there.

once again extval (1.x and 2.x) offers features which aren't available in other validation frameworks for jsf. e.g. extval allows to use @Valid in combination with jsf. beyond the features of bean-validation (jsr 303) itself extval provides the possibility to use an annotation called @ConstraintSource. it allows e.g. to annotate dto's with this new annotation(s) in order to specify the source which hosts the constraints. so you don't have to repeat all the constraints in classes like dto's.

extval meets cwiki.apache.org

today i created a new cwiki-space for extval.

within the next weeks i'll move and improve the documentation of extval.
you are welcome to ask questions in order to improve the content!

extval meets paper

bart kummel wrote a book about the myfaces project.
i'll publish a review about the book quite soon.

it also contains an intro of myfaces extval!
it's really great that the extval chapter is the free sample chapter.
so enjoy reading it!

extval r3 in action - fullstack 2010

this fullstack demo illustrates some use-cases of using jsf 1.2, spring 3, myfaces extval r3, bean-validation,... in case of myfaces extval the demo also shows how to keep all layers outside the view-layer independent of extval classes. so you see how to re-use existing (extval independent) constraints for ui validation in a typesafe way.
furthermore, the demo shows how to integrate bean-validation (jsr 303) in jsf 1.x applications.

further details are available in the (short) readme file.

here is the list of the used technologies:
- jsf 1.2 (+ facelets)
- myfaces orchestra
- myfaces extval r3 (+ some add-ons)
- bean-validation (jsr 303)
- spring 3
- jpa 1.0
- primefaces

myfaces extval release news r2 -> r3

these slides give a short overview of the most important features of the 3rd release of myfaces extval.

MyFaces Extensions Validator r3 News

3rd release of myfaces-extensions-validator

the apache myfaces team is pleased to announce a new release of myfaces-extensions-validator!

the release contains several improvements and new features as well as a new validation module for using bean-validation (jsr 303) with jsf 1.x and 2.0.
(compared to the standard integration of bv in jsf 2.0 extval 2.0.3 offers more advanced and typesafe features.)

released versions:
extval 1.1.3 (for jsf 1.1.x)
extval 1.2.3 (for jsf 1.2.x)
extval 2.0.3 (for jsf 2.0.x)

[add-on] spring 3 managed constraint validation for extval

there is a new add-on which allows using typesafe spring 3 dependency injection for constraint validators. so it's possible to inject other beans (e.g. a validation service, a repository,...) into a constraint validator.

it's similar to the native extval di support. the main difference is that the add-on offers a typesafe alternative. you just have to extend the default-implementation (listed at @Constraint(validatedBy = {...})) and provide the custom implementation as spring bean.

myfaces-extval @ jsfdays 2010

last year i presented extval at my trinidad workshop (esp. the integration and special features in combination with trinidad).

this year i'll give a jsf fullstack workshop. one part of the workshop will show how to integrate bean-validation in a jsf 1.x application via myfaces extval as well as the migration path for upgrading to jsf 2.0.

the rest of the workshop will be interesting as well (for sure)!

if you are interested - just register here!

myfaces extval @ jsfcentral

the next part of the article series is available at jsfcentral.
thx to the jsfcentral team!

happy birthday myfaces-extval

one year ago we saw the first release of myfaces extensions validator.

the second release was a small but powerful update.
the third release will be available soon. it is a major update and will provide a lot new great features as well as a new validation module which allows to use bean-validation (jsr 303) with all jsf versions as well as some other additional features compared to the standard integration of bv in jsf 2. the latest milestone is available at the snapshot repository. it's already very stable and you can start using it right now! (currently we are in the review phase - so you can already use the current milestone until the version gets released.)

so extval and its add-ons will continue to help you to solve your daily validation tasks with powerful and easy to use mechanisms.

within the last year i received a lot of great feedback as well as a lot ideas for great add-ons. over 17 000 page-hits (in ~100 different countries) within the first year is really great for such an extension! these numbers are just for os890. if you also count the articles, wikis,... it's much higher!

so all of you are welcome to use the current milestone and don't stop to provide feedback as well as ideas for great new features and improvements...

primefaces and jsr 303 via extval

the previous post shows how easy it is to set-up extval to be used with primefaces.

in the meantime i created a small example [1] which shows that it is very easy to use jsr 303 constraints in a primefaces application via extval.

furthermore, the demo shows ajax validation based on jpa annotations as well as cross-validation via ajax and the none-blocking warn mode.

moreover, the example shows the optional component support module for primefaces. for example it allows component initialization of the password-component based on meta-data. that's equivalent to the functionally available for the standard components. if a property bound to this special primefaces component hosts meta-data about min and max length (e.g. the jsr 303 constraint @Size(min = 7, max = 14), these information get transferred to the component automatically.

a sample screen of the demo:



[1] http://code.google.com/p/sandbox890/source/browse/#svn/trunk/examples/primefaces_extval/example_01

os890 maven repository

it was a frequent user request that the myfaces-extval add-ons should be available via a maven 2 repository. so i created a repository for os890 as well as for sandbox890.

so you just have to add e.g. the following part to the repositories section of your pom.xml

<repository>
  <id>os890.googlecode.com</id>
  <url>http://os890-m2-repository.googlecode.com/svn/tags/os890</url>
</repository>

snapshots are available via

<repository>
  <id>os890.googlecode.com</id>
  <url>http://os890-m2-repository.googlecode.com/svn/trunk/os890</url>
</repository>

further information are available in the usage-wiki as well as the repository overview!