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From Mark Struberg <strub...@yahoo.de>
Subject Re: el expression
Date Wed, 10 Feb 2010 10:20:43 GMT
done:
http://wiki.apache.org/myfaces/Parameters_In_EL_Functions
http://wiki.apache.org/myfaces/HowToEnableEl22

LieGrue,
strub

--- Matthias Wessendorf <matzew@apache.org> schrieb am Mi, 10.2.2010:

> Von: Matthias Wessendorf <matzew@apache.org>
> Betreff: Re: el expression
> An: "MyFaces Discussion" <users@myfaces.apache.org>
> Datum: Mittwoch, 10. Februar 2010, 10:36
> thanks mark,
> 
> do you mind putting this into a wiki page ? :)
> 
> -Matthias
> 
> On Wed, Feb 10, 2010 at 10:10 AM, Mark Struberg <struberg@yahoo.de>
> wrote:
> > Hiho!
> >
> > It is possible, but only with a little trick.
> > Using a parameter in the EL is a new EL-2.2 feature
> which is _not_ part of JSP-2.1 delivered with tomcat6 and
> jetty6 but defined in JSR-245 MR-2 (JSP-2.2) [1].
> >
> > You can enable EL-2.2 by using a few tricks even in
> tomcat-6 and jetty6.
> > Here is how goes:
> >
> > A.) You have to use el-api.jar and el-impl.jar from
> the glassfish reference implementation. In your pom.xml:
> >
> >    <!-- EL 2 -->
> >    <dependency>
> >        <groupId>javax.el</groupId>
> >      
>  <artifactId>el-api</artifactId>
> >        <version>2.2</version>
> >        <scope>provided</scope>
> >    </dependency>
> >    <profiles>
> >        <profile>
> >            <id>jetty</id>
> >            <build>
> >                <plugins>
> >                    <plugin>
> >                      
>  <groupId>org.mortbay.jetty</groupId>
> >                      
>  <artifactId>maven-jetty-plugin</artifactId>
> >                      
>  <version>${jetty-version}</version>
> >                      
>  <configuration>
> >                          
>  <scanIntervalSeconds>10</scanIntervalSeconds>
> >                      
>  </configuration>
> >                    </plugin>
> >                </plugins>
> >            </build>
> >            <dependencies>
> >                <dependency>
> >                  
>  <groupId>javax.el</groupId>
> >                  
>  <artifactId>el-api</artifactId>
> >                  
>  <version>2.2</version>
> >                  
>  <scope>compile</scope>
> >                </dependency>
> >                <dependency>
> >                  
>  <groupId>org.glassfish.web</groupId>
> >                  
>  <artifactId>el-impl</artifactId>
> >                  
>  <scope>runtime</scope>
> >                  
>  <version>2.2</version>
> >                </dependency>
> >            </dependencies>
> >        </profile>
> >    </profiles
> >
> > This will allow you to use EL-2.2 by running
> > $> mvn clean install -Pjetty jetty:run
> >
> > B.) preparing tomcat
> >   1.  go to the tomcat home directory
> >   2. remove tomcats el-api.jar from the classpath:
> >      $> mv ./lib/el-api.jar
> ./lib/el-api.jar.nixda
> >
> >   3. copy the EL-2.2 jars into ./lib (el-api-2.2.jar,
> el-impl-2.2.jar)
> >   4. make sure that the applications don't contain
> those 2 el jars!
> >
> > voila, have fun!
> >
> > LieGrue,
> > strub
> >
> > [1] http://jcp.org/aboutJava/communityprocess/mrel/jsr245/index.html
> >
> >
> > --- Michael Kurz <michi.kurz@gmx.at>
> schrieb am Mi, 10.2.2010:
> >
> >> Von: Michael Kurz <michi.kurz@gmx.at>
> >> Betreff: Re: el expression
> >> An: users@myfaces.apache.org
> >> Datum: Mittwoch, 10. Februar 2010, 9:33
> >> Hi,
> >>
> >> it is true that it is not possible to use method
> parameters
> >> or to call
> >> methods of an object that are no getters or
> setters (at
> >> least before
> >> Java EE 6).
> >>
> >> But there are ways to bypass this limitation:
> >>
> >> * If you only want to call a method in an EL
> expression you
> >> could define
> >> an EL function (possible with JSP and Facelets).
> >>
> >> * If you want to pass a parameter to an action
> method you
> >> could use an
> >> alternative EL implementation like JBoss EL (see
> [1]). For
> >> this you have
> >> to include the JBoss EL libraries and replace the
> >> expression factory of
> >> MyFaces like this in your web.xml:
> >>
> >>    <!-- Replace ExpressionFactory for
> >> Apache MyFaces -->
> >>    <context-param>
> >>
> >>
>    <param-name>org.apache.myfaces.EXPRESSION_FACTORY</param-name>
> >>
> >>
>    <param-value>org.jboss.el.ExpressionFactoryImpl</param-value>
> >>    </context-param>
> >>
> >> regards
> >> Michael
> >>
> >> [1]:
> >> http://docs.jboss.org/seam/2.0.1.GA/reference/en/html/elenhancements.html
> >>
> >> Am 10.02.2010 09:20, schrieb Martin Monshausen:
> >> > Hi,
> >> > calling methods with parameters is not
> possible in JSF
> >> as far as I know. Try to set Parameter in Bean
> before
> >> calling the method and then refer to it in your
> >> parameter-less method.
> >> > Yours,
> >> >
> >> > Martin
> >> > ________________________________
> >> >
> >> > Von: Krishna K. Pandit [mailto:Krishna.Pandit@aptuit.com]
> >> > Gesendet: Mi 10.02.2010 06:14
> >> > An: MyFaces Discussion
> >> > Betreff: el expression
> >> >
> >> >
> >> >
> >> > Hi all
> >> >
> >> > Can any one can help me how to pass a
> parameter to a
> >> method while
> >> > calling it in EL expression.
> >> > Im trying this
> >> >
> >> > "#{myBean.method('JAVA')}
> >> >
> >> > But I m getting errors while rendering.
> >> >
> >> > Thanks
> >> > Krishna Pandit
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> >>
> >
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> 
> 
> 
> -- 
> Matthias Wessendorf
> 
> blog: http://matthiaswessendorf.wordpress.com/
> sessions: http://www.slideshare.net/mwessendorf
> twitter: http://twitter.com/mwessendorf
> 

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