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Posted to users@myfaces.apache.org by Paul Spencer <pa...@apache.org> on 2008/09/26 21:40:36 UTC
How to set a component value to an EL Expression in Java?
I need to dynamically add a child component inside a bean. I have access
to the component via a binding and have successfully added the child
component. What I have not been able to do is set the value of the
child component to an EL Expresion so it is resolve by JSF 1.2.
The equivalent tag for the child component is:
<tr:inputText value="#{foo.bar}"/>
So far I have:
CoreInputText childComponent;
childComponent = (CoreInputText)
application.createComponent(CoreInputText.COMPONENT_TYPE);
// Set the value to an EL Expression
childComponent.setValue("#{foo.bar}"); // Does not work
Suggestions?
Paul Spencer
Re: How to set a component value to an EL Expression in Java?
Posted by Paul Spencer <pa...@apache.org>.
Andrew,
This works.
Thank you.
Paul Spencer
Andrew Robinson wrote:
> Oops, here is a better version:
>
> FacesContext facesContext = FacesContext.getCurrentInstance();
> CoreInputText childComponent = childComponent = (CoreInputText)
> facesContext.getApplication().createComponent(CoreInputText.COMPONENT_TYPE);
> ValueExpression ve = facesContext.getApplication().getExpressionFactory()
> .createValueExpression(facesContext.getELContext(), "#{foo.bar}",
> Object.class);
> childComponent.setValueExpression("value", ve);
>
>
> On Fri, Sep 26, 2008 at 2:02 PM, Andrew Robinson
> <an...@gmail.com> wrote:
>> JSF 1.2 code:
>>
>> CoreInputText childComponent;
>> childComponent = (CoreInputText)
>> application.createComponent(CoreInputText.COMPONENT_TYPE);
>> FacesContext facesContext = FacesContext.getCurrentInstance();
>> ValueExpression ve = facesContext.getApplication().getExpressionFactory()
>> .createValueExpression(facesContext.getELContext(), "#{foo.bar}",
>> Object.class);
>> childComponent.setValueExpression(ve);
>>
>> -Andrew
>>
>> On Fri, Sep 26, 2008 at 1:51 PM, Shane Petroff <sh...@mayet.ca> wrote:
>>> Paul Spencer wrote:
>>>> I need to dynamically add a child component inside a bean. I have access
>>>> to the component via a binding and have successfully added the child
>>>> component. What I have not been able to do is set the value of the child
>>>> component to an EL Expresion so it is resolve by JSF 1.2.
>>>>
>>>> The equivalent tag for the child component is:
>>>> <tr:inputText value="#{foo.bar}"/>
>>>>
>>>> So far I have:
>>>> CoreInputText childComponent;
>>>> childComponent = (CoreInputText)
>>>> application.createComponent(CoreInputText.COMPONENT_TYPE);
>>>> // Set the value to an EL Expression
>>>> childComponent.setValue("#{foo.bar}"); // Does not work
>>>>
>>> ValueBinding vb = application.createValueBinding(elExpression);
>>> vb.setValue(context, value);
>>>
>>> Will work, but iirc, this is deprecated, and there is an alternate for 1.2,
>>> namely ValueExpression
>>>
>>> Shane
>>>
>>>
>>>
>>> --
>>> Shane
>>>
>>>
>
Re: How to set a component value to an EL Expression in Java?
Posted by Andrew Robinson <an...@gmail.com>.
Oops, here is a better version:
FacesContext facesContext = FacesContext.getCurrentInstance();
CoreInputText childComponent = childComponent = (CoreInputText)
facesContext.getApplication().createComponent(CoreInputText.COMPONENT_TYPE);
ValueExpression ve = facesContext.getApplication().getExpressionFactory()
.createValueExpression(facesContext.getELContext(), "#{foo.bar}",
Object.class);
childComponent.setValueExpression("value", ve);
On Fri, Sep 26, 2008 at 2:02 PM, Andrew Robinson
<an...@gmail.com> wrote:
> JSF 1.2 code:
>
> CoreInputText childComponent;
> childComponent = (CoreInputText)
> application.createComponent(CoreInputText.COMPONENT_TYPE);
> FacesContext facesContext = FacesContext.getCurrentInstance();
> ValueExpression ve = facesContext.getApplication().getExpressionFactory()
> .createValueExpression(facesContext.getELContext(), "#{foo.bar}",
> Object.class);
> childComponent.setValueExpression(ve);
>
> -Andrew
>
> On Fri, Sep 26, 2008 at 1:51 PM, Shane Petroff <sh...@mayet.ca> wrote:
>> Paul Spencer wrote:
>>>
>>> I need to dynamically add a child component inside a bean. I have access
>>> to the component via a binding and have successfully added the child
>>> component. What I have not been able to do is set the value of the child
>>> component to an EL Expresion so it is resolve by JSF 1.2.
>>>
>>> The equivalent tag for the child component is:
>>> <tr:inputText value="#{foo.bar}"/>
>>>
>>> So far I have:
>>> CoreInputText childComponent;
>>> childComponent = (CoreInputText)
>>> application.createComponent(CoreInputText.COMPONENT_TYPE);
>>> // Set the value to an EL Expression
>>> childComponent.setValue("#{foo.bar}"); // Does not work
>>>
>>
>> ValueBinding vb = application.createValueBinding(elExpression);
>> vb.setValue(context, value);
>>
>> Will work, but iirc, this is deprecated, and there is an alternate for 1.2,
>> namely ValueExpression
>>
>> Shane
>>
>>
>>
>> --
>> Shane
>>
>>
>
Re: How to set a component value to an EL Expression in Java?
Posted by Andrew Robinson <an...@gmail.com>.
JSF 1.2 code:
CoreInputText childComponent;
childComponent = (CoreInputText)
application.createComponent(CoreInputText.COMPONENT_TYPE);
FacesContext facesContext = FacesContext.getCurrentInstance();
ValueExpression ve = facesContext.getApplication().getExpressionFactory()
.createValueExpression(facesContext.getELContext(), "#{foo.bar}",
Object.class);
childComponent.setValueExpression(ve);
-Andrew
On Fri, Sep 26, 2008 at 1:51 PM, Shane Petroff <sh...@mayet.ca> wrote:
> Paul Spencer wrote:
>>
>> I need to dynamically add a child component inside a bean. I have access
>> to the component via a binding and have successfully added the child
>> component. What I have not been able to do is set the value of the child
>> component to an EL Expresion so it is resolve by JSF 1.2.
>>
>> The equivalent tag for the child component is:
>> <tr:inputText value="#{foo.bar}"/>
>>
>> So far I have:
>> CoreInputText childComponent;
>> childComponent = (CoreInputText)
>> application.createComponent(CoreInputText.COMPONENT_TYPE);
>> // Set the value to an EL Expression
>> childComponent.setValue("#{foo.bar}"); // Does not work
>>
>
> ValueBinding vb = application.createValueBinding(elExpression);
> vb.setValue(context, value);
>
> Will work, but iirc, this is deprecated, and there is an alternate for 1.2,
> namely ValueExpression
>
> Shane
>
>
>
> --
> Shane
>
>
Re: How to set a component value to an EL Expression in Java?
Posted by Shane Petroff <sh...@mayet.ca>.
Paul Spencer wrote:
> I need to dynamically add a child component inside a bean. I have
> access to the component via a binding and have successfully added the
> child component. What I have not been able to do is set the value of
> the child component to an EL Expresion so it is resolve by JSF 1.2.
>
> The equivalent tag for the child component is:
> <tr:inputText value="#{foo.bar}"/>
>
> So far I have:
> CoreInputText childComponent;
> childComponent = (CoreInputText)
> application.createComponent(CoreInputText.COMPONENT_TYPE);
> // Set the value to an EL Expression
> childComponent.setValue("#{foo.bar}"); // Does not work
>
ValueBinding vb = application.createValueBinding(elExpression);
vb.setValue(context, value);
Will work, but iirc, this is deprecated, and there is an alternate for
1.2, namely ValueExpression
Shane
--
Shane