Re: running example

[Erik Hatcher <er...@ehatchersolutions.com>]

On Mar 31, 2005, at 4:50 PM, Ron Piterman wrote:

> ציטוט Alex Kravets:
>> thanks Geoff,
>> So the example was wrong then? And as I understand when I define a 
>> binding with name listener it will always be put into map by 
>> Tapestry?
>
>
> note that it is not "listeners:okListener" but "listeners.okListener".

That is true in 3.0...
However note that in 3.1 in addition to "ognl:listeners.okListener" 
that "listener:okListener" is also acceptable.

	Erik


>
> Ognl calls getListeners(), gets a custom map implementation, which, 
> when
> get(key) is called, constructs a listener which will call your, in 
> this case, okListener method. (or so I understand it) - this saves you 
> much time in implementing real listener implementations.
>
> You can define your own listener implementation though and supply it 
> in the binding.
>
>
>> Geoff Longman wrote:
>>> and the java to:
>>>
>>> public class Home extends BasePage {
>>>
>>>
>>>   public void okListener(IrequestCycle cycle) {
>>> cycle.activate("Result");
>>> }
>>>
>>> }
>>>  IActionListeners are create for you by Tapestry and hooked to the
>>> methods with sigs as above. These synthetic listeners are stored in a
>>> map called "listeners" hence the ognl expression
>>> "listeners.okListener".
>>>
>>> Geoff
>>>
>>>
>>> On Thu, 31 Mar 2005 14:51:57 -0600, Geoff Longman 
>>> <gl...@gmail.com> wrote:
>>>
>>>> change:
>>>>
>>>> <binding name="listener" expression="okListener"/>
>>>>
>>>> to:
>>>>
>>>> <binding name="listener" expression="listeners.okListener"/>
>>>>
>>>> Geoff
>>>>
>>>>
>>>> On Thu, 31 Mar 2005 15:21:05 -0500, Alex Kravets
>>>> <akravets@kligerweiss.com > wrote:
>>>>
>>>>> I am experimenting with currency converter from this tutorial:
>>>>> http://www2.cpttm.org.mo/cyberlab/softdev/tapestry/ .
>>>>> When I run application I get an exception:
>>>>> org.apache.tapestry.BindingException
>>>>> Unable to resolve expression 'okListener' for
>>>>> org.apache.tapestry.html.BasePage@103d246[Home].
>>>>> binding:        ExpressionBinding[Home okListener]
>>>>> location:       context:/WEB-INF/Home.page, line 10, column 56
>>>>>
>>>>> ognl.NoSuchPropertyException
>>>>> okListener
>>>>>
>>>>> I have all the files as in tutorial, but have no idea what's going 
>>>>> on.
>>>>> Obviously it can't link Home.page with Home.java, but why?
>>>>>
>>>>> Home.page
>>>>> ========
>>>>> <?xml version="1.0" encoding="UTF-8"?>
>>>>> <!DOCTYPE page-specification
>>>>>      PUBLIC "-//Apache Software Foundation//Tapestry Specification 
>>>>> 3.0//EN"
>>>>>      "http://jakarta.apache.org/tapestry/dtd/Tapestry_3_0.dtd " >
>>>>> <!-- generated by Spindle, http://spindle.sourceforge.net -->
>>>>>
>>>>> <page-specification class="helloworld.Home">
>>>>>    <description><![CDATA[   add a description   ]]></description>
>>>>>        <component id="currencyConverterForm" type="Form">
>>>>>                   <binding name="listener" 
>>>>> expression="okListener"/>
>>>>>        </component>
>>>>> </page-specification>
>>>>>
>>>>> Home.java
>>>>> ========
>>>>> package helloworld;
>>>>>
>>>>> import org.apache.tapestry.*;
>>>>> import org.apache.tapestry.html.*;
>>>>>
>>>>> public class Home extends BasePage {
>>>>>        public IActionListener getOkListener() {
>>>>>                return new IActionListener() {
>>>>>                        public void actionTriggered( IComponent
>>>>> component, IRequestCycle cycle) {
>>>>>                                cycle.activate("Result");
>>>>>                        }
>>>>>                };
>>>>>        }
>>>>> }
>>>>>
>>>>> thanks,
>>>>> Alex
>>>>>
>>>>>
>>>>>
>>>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
>>> For additional commands, e-mail: 
>>> tapestry-user-help@jakarta.apache.org
>>>
>>>
>>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: tapestry-user-help@jakarta.apache.org


---------------------------------------------------------------------
To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: tapestry-user-help@jakarta.apache.org