Thx Kristian,
but I'm using jdk 1.4 so I can't use InjectStateFlag, so isn't possible to
initiate the object via configuration file ?
doesn't
<state-object name="wizardPerson" scope="session">
           <create-instance class="org.jfly.demo.edittable.vo.Person" />
</state-object>

create an instance of Person when Session is first created ?



On 4/12/07, Kristian Marinkovic <[EMAIL PROTECTED]> wrote:

hi,

this happens because you access the Person object before
it is instantiated. the easiest thing is to add a if before your
input to check whether the object is null

in tapestry 4.1 theres is the InjectStateFlag annotation
that returns true if your ASO is instantiated

or you can instantiate your Person object during the init phase
of your page by accessing it once

g,
kris




"Andrea Chiumenti" <[EMAIL PROTECTED]>
12.04.2007 15:01
Bitte antworten an
"Tapestry users" <[EMAIL PROTECTED]>


An
"Tapestry users" <[EMAIL PROTECTED]>
Kopie

Thema
help injecting tate objects






hello I've the following problem:

hivemodule.xml
.............
<contribution configuration-id="tapestry.state.ApplicationObjects">

        <state-object name="wizardPerson" scope="session">
            <create-instance class="org.jfly.demo.edittable.vo.Person" />
        </state-object>
    </contribution>
........


page template:
.......
<inject property="person" type="state" object="wizardPerson"/>
.......

html template:
.....
<input jwcid="@Insert" value="ognl:person.name"/>
.....



The exception thrown when I access the page is:

log
ognl.OgnlException: person [java.lang.IllegalStateException: Cannot create
a
session after the response has been committed]
        at ognl.OgnlRuntime.getMethodValue(OgnlRuntime.java:1046)
        at ognl.ObjectPropertyAccessor.getPossibleProperty(
ObjectPropertyAccessor.java:60)
        at ognl.ObjectPropertyAccessor.getProperty(
ObjectPropertyAccessor.java:134)
..................


page:
Unable to parse OGNL expression 'person.name': Error compiling expression
on
object [EMAIL PROTECTED] with expression node person.name getter
body: null setter body: null


How can I solve this ?


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