Re: JSF technology

From:

gk <srcjnu@gmail.com>

Newsgroups:

comp.lang.java.programmer

Date:

Sat, 18 Sep 2010 00:25:29 -0700 (PDT)

Message-ID:

<8dd0fe84-79a9-4e2c-8198-0cad867fe9b8@a19g2000vbi.googlegroups.com>

On Sep 18, 2:33 am, "Arved Sandstrom" <dces...@hotmail.com> wrote:

gk wrote:

On Sep 17, 4:54 pm, Lew <no...@lewscanon.com> wrote:

gk wrote:

Thanks. I did a look up on that and found the conversion . see the
example below. I think this is a data conversion.

It was "String age" in Backing bean but in Page view we are using
converter="javax.faces.Integer" to convert this data. So, This is a
data conversion I think.


<h:message showSummary="true" for="age"/>
<h:inputText id="age"
value="#{user.age}"
converter="javax.faces.Integer" />


public String getAge() {return this.age;}
public void setAge(String age){this.age = age;}
private String age;

Shouldn't the backing-bean methods be
public Integer getAge();
public void setAge( Integer age );
?

I checkd it . but the source has private String age;

I think probabily thats why we have converter="javax.faces.Inte=

ger"

in the JSF tag to convert String to Integer ....is not it ? what say ?

That source is not doing you any favours. The backing (managed) bean
field/getter/setter data types should be what you want *after* conversion=

not before it. Otherwise the process would be somewhat absurd, as everyth=

ing

would be a String and in what other publicly accessible spot would you fi=

the converted values?

I got confused now. Did you mean the example I posted is NOT a JSF
data conversion example ? OR you are trying to say its a CORRECT
example but NOT a GOOD one ?

By anyway , could you please post me an correct example for data
conversion ? Alternatively, Could you please post me a relevant link
which explains this stuff . so that I can look up the details what you
are referring at.

I have checked the sources and have come up with that example. But
from your comments , it seems to me I landed to a wrong place. Could
you please correct me what should be correct example ?

Regards.