Re: myfaces popularity

Werner Punz Thu, 09 Dec 2010 12:06:32 -0800

Actually from what I have read so far on GAE and JSF, GAE would be a nogo for me to use in conjunction with JSF.First as it seems to have all sort of problems, secondly, it seems toput restrictions on the containers threading model, third, it imposes aclient side only state saving, which in itself is a second rate choice.I am not sure if GAE really is the way to go if you want to run JSF.

Just read this linkhttp://xebee.xebia.in/2010/07/21/google-app-engine-maven-jsf2/ and thenthe comments below. It does not look good.




Werner



Am 06.12.10 10:45, schrieb Mark Struberg:

Yes, I feared that :(

They have a relative defensive update policy.

On one side this is good for existing apps which doesn't have much 
compatibility problems. But they e.g. still ship a very old jetty container 
which contains lots of known bugs.

LieGrue,
strub

--- On Mon, 12/6/10, Nikolay Rychkov<nikolay.rych...@gmail.com>  wrote:

From: Nikolay Rychkov<nikolay.rych...@gmail.com>
Subject: Re: myfaces popularity
To: "MyFaces Discussion"<users@myfaces.apache.org>
Date: Monday, December 6, 2010, 2:02 AM
GAE does not support it.
http://code.google.com/p/googleappengine/issues/detail?id=3431&q=el&colspec=ID%20Type%20Status%20Priority%20Stars%20Owner%20Summary%20Log%20Component%20Language

2010/12/5 Mark Struberg<strub...@yahoo.de>

thingy.edit('X')


So what you need is UEL-2.2. No idea if gae supports

this. Maybe there is

an option to get it (comes with Servlet-3.0). In this

case you would not

need to do anything - but if gae doesn't support it,

then you would most

likely be doomed :/

Maybe try asking Ali Ok, he did a few things on GAE in

the past.


LieGrue,
strub

--- On Sun, 12/5/10, ken keller<klr...@gmail.com>

wrote:

From: ken keller<klr...@gmail.com>
Subject: Re: myfaces popularity
To: "MyFaces Discussion"<users@myfaces.apache.org>
Date: Sunday, December 5, 2010, 8:14 PM
I don't see how CDI helps. I tried 3
ways:

X denotes the value of the ID.

1) Pass id as view param using h:link:
<h:link value="edit" outcome="edit_thing">
    <f:param name="id"

value="X"/>

</h:link>
and bind to pseudo-property named idToLoad in
edit_thing.xhtml:
<f:metadata>
    <f:viewParam name="id"
value="#{thingy.idToLoad}"/>
</f:metadata>

2) Pass id as view param using h:commandLink:
<h:commandLink value="edit"

action="#{thingy.edit}">

    <f:param name="id"

value="X"/>

</h:commandLink>
Action method named edit() gets id from

FacesContext:

FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("id");

If that isn't inconvenient, what is? :)

3) Pass id as EL param using h:commandLink:
<h:commandLink value="edit"
action="#{thingy.edit('X')}">
</h:commandLink>
myfaces complains:
java.lang.NoSuchMethodError:

javax.el.ELResolver.invoke(Ljavax/el/ELContext;Ljava/lang/Object;Ljava/lang/Object;[Ljava/lang/Class;[Ljava/lang/Object;)Ljava/lang/Object;

My action method is:
public String edit(String id) { ... }
My web.xml has:
<context-param>

<param-name>com.sun.faces.expressionFactory</param-name>

<param-value>com.sun.el.ExpressionFactoryImpl</param-value>

</context-param>
<context-param>

<param-name>org.apache.myfaces.EXPRESSION_FACTORY</param-name>

<param-value>com.sun.el.ExpressionFactoryImpl</param-value>

</context-param>
My pom.xml has:
<dependency>

<groupId>javax.el</groupId>

<artifactId>el-api</artifactId>

     <version>2.2</version>
     </dependency>
     <dependency>

<groupId>org.glassfish.web</groupId>

<artifactId>el-impl</artifactId>

     <version>2.2</version>
     </dependency>
I don't know why this fails.

What's the best style?

On Sat, Dec 4, 2010 at 8:31 AM, Gerhard<gerhard.petra...@gmail.com>
wrote:

short addition:

with myfaces codi also beans annotated with

@ManagedBean are normal cdi

beans (automatically).

regards,
gerhard

http://www.irian.at

Your JSF powerhouse -
JSF Consulting, Development and
Courses in English and German

Professional Support for Apache MyFaces


2010/12/4 Mark Struberg<strub...@yahoo.de>

+1, with CDI you would be able to

simply @Inject

all your needed

parameters. In general I'd say that one

should

generally use CDI instead

of

the JSF @ManagedBean mechanism.

LieGrue,
strub

--- On Sat, 12/4/10, Jakob Korherr

<jakob.korh...@gmail.com>

wrote:

From: Jakob Korherr<jakob.korh...@gmail.com>
Subject: Re: myfaces popularity
To: "MyFaces Discussion"<users@myfaces.apache.org>
Date: Saturday, December 4, 2010,

3:45 PM

... or, you know, use CDI for

your

managed beans ;)

Regards,
Jakob

2010/12/4 Jakob Korherr<jakob.korh...@gmail.com>:

Hi,

Sorry, I just skimmed your

mail, but

for your last

point

Finally, what's the

correct way to

implement an

editor action? The managed

bean needs to be

initialized before

rendering it.

So instead of invoking the

no-arg constructor, I want

something

like:

Foo(id)
to be invoked.


you can use a no-arg

constructor and an

init method

annotated with

@PostConstruct. So something

like

this:


@PostConstruct
private void init() { // init

bean here


However, you can't pass

arguments

neither to the

constructor nor to

this init method. You need to

1) get

everything you

need from the

context or 2) set them from

outside via

setter

methods.


Hope this helps.

Regards,
Jakob

2010/12/3 ken keller<klr...@gmail.com>:

My last startup is

www.collectrium.com. We use

AWS/py/django. This was my

first non-Java app&

I missed

strong typing.

django's template language is

verbose&  there's not

much of a

widget

library. So I'm back to Java. AWS

avoids setting up a data

center (as

co-founder of

IGN.com, I don't miss

managing 1,000 servers)

but one

still must manage

the OS&  scaling. So I'm

trying appengine.

jsf's attractions are

validation,

data binding,

component model, component

libraries. Too bad it

doesn't

include safe HTML

(ala

http://code.google.com/webtoolkit/doc/latest/ReleaseNotes.html#SafeHtml)

but

it should be easy to wrap

text

components. Too bad

the component library

suppliers won't rally

around a

standard

look-&-feel so one could mix

components.

I like gwt but it doesn't

have

validation&

SEO is too hard. I might use gwt

for editing functionality

&  a

lightweight

template language (which doesn't

require a servlet

container or mock

for unit

testing) like freemarker for

browsing functionality.

My current startup is a

productivity tool in the

cloud. I hope it will be

used by many people of

course.


I'm using IntelliJ&

appengine

1.3.8. From my

web.xml:

<context-param>

<param-name>com.sun.faces.expressionFactory</param-name>

<param-value>com.sun.el.ExpressionFactoryImpl</param-value>

</context-param>


 From my pom.xml:

   <dependency>


    <groupId>javax.el</groupId>


    <artifactId>el-api</artifactId>


    <version>2.2</version>

    </dependency>

    <dependency>

<groupId>org.glassfish.web</groupId>


    <artifactId>el-impl</artifactId>


    <version>2.2</version>

    </dependency>


When I run the app, the

log shows:


INFO: Either you haven't

specified

the

ExpressionFactory implementation,

or

an error occured while

instantiating the

implementation you've specified.

However, attempting to

load a

known

implementation.


The app works but I

wonder why.


I'm having trouble w/

primefaces

too.


Finally, what's the

correct way to

implement an

editor action? The managed

bean needs to be

initialized before

rendering it.

So instead of invoking the

no-arg constructor, I

want

something like:

Foo(id)
to be invoked.

On Fri, Dec 3, 2010 at

10:04 AM,

Kito Mann<kito.m...@virtua.com>

wrote:

Hello Ken,

There's definitely a

lot of

activity in the

JSF world, and it's used by a

lot of large and

smaller

companies (see

http://www.javaserverfaces.org/for

a list of sites built

using JSF

or Seam under

"JSF in Production"). There

are a variety of

industries,

but it's quite

popular in Finance (banks and

insurance

companies).


In terms of active

development,

you can just

look at the recent releases to

see there's a lot

going on.


It's worthwhile also

to point

out that

Trinidad is used as the

foundation

for all of the Oracle

Fusion

applications.


What sort of

application is

your startup

intending to build with MyFaces?

---
Kito D. Mann |

twitter: kito99

| Author, JSF

in Action

Virtua, Inc. | http://www.virtua.com | JSF/Java EE

training and consulting

http://www.JSFCentral.com - JavaServer

Faces FAQ, news, and info |

twitter:
jsfcentral
+1 203-404-4848 x3

Public JSF 2 Training

this

January in London:

JSF 2 Update for JSF 1.x

users
(http://bit.ly/jsf2updatecourse<
http://skillsmatter.com/course/java-jee/jsf2-update-course>)
and JSF 2 in Action
(http://bit.ly/jsf2course<
http://skillsmatter.com/course/java-jee/jsf-and-ajax>
)



On Fri, Dec 3, 2010

at 11:44

AM, ken keller

<klr...@gmail.com>
wrote:

1Mpvs/day on

which URL?


mojarra looks

inactive:

http://java.net/projects/mojarra/lists
The richfaces

team seems

to prefer

mojarra to myfaces. Given the

effort

being devoted to

richfaces

primefaces atop jsf2, one would

think there

would be much

more

activity on the

lists.


I've posted

twice over the

last few

months about

javax.faces.application.ViewExpiredException

thrown on

appengine but

nobody replied.


http://www.irian.at/myfaces_support
costs $5,300/yr

for basic

support--$10,600 for advanced. My

startup

can't

afford

this--especially

without trying it

first--perhaps a paygo option.


I haven't

studied the

source code to see

if there's unit testing.


As compelling as

jsf2 is,

I'm scared to

bet my startup on it.


On Fri, Dec 3,

2010 at

12:30 AM, Mark

Struberg<strub...@yahoo.de>

wrote:

Hi!

With the

pretty fast

development on

the spec side (last year 2.0,

last

week

2.1 -

thanks Ed!)

there is a very

steady development going on atm.

Also

remember

that EE6 is

pretty fresh.


So while

there is

currently not that

much traffic on the us...@mf list

there is

pretty much

of it on the

dev list atm.

The move

from JSF-1.x

to JSF-2.x is

still to be done for most of the

legacy

projects,

but there

are a few JFS-2

projects already in production

with

lot

of success

(we

currently serve ~ 1

mio page hits per day with

MyFaces-2,

OpenWebBeans, CODI,

OpenJPA2 and our

servers are pretty 'cold')


LieGrue,
strub

--- On Fri,

12/3/10,

Matthias

Wessendorf<mat...@apache.org>
wrote:

From:

Matthias

Wessendorf

<mat...@apache.org>

Subject: Re:

myfaces

popularity

To:

"MyFaces

Discussion"<users@myfaces.apache.org>

Date:

Friday,

December 3, 2010,

7:44 AM

On

Fri, Dec 3,

2010 at 7:28 AM,

ken

keller

<klr...@gmail.com>

wrote:

This

mailing list isn't

very active. Most of the

messages seem to

be about

component

libs like

Trinidad.

Is myfaces

popular?


yes it

is.

Wouldn't a

searchable

group be more convenient than a

mailing list?

the

archives

*are* searchable

(e.g. markmail).

--

Matthias

Wessendorf


blog:

http://matthiaswessendorf.wordpress.com/

sessions: http://www.slideshare.net/mwessendorf

twitter: http://twitter.com/mwessendorf




--
Jakob Korherr

blog: http://www.jakobk.com
twitter: http://twitter.com/jakobkorherr
work: http://www.irian.at




--
Jakob Korherr

blog: http://www.jakobk.com
twitter: http://twitter.com/jakobkorherr
work: http://www.irian.at

Re: myfaces popularity

Reply via email to