Re: create EventLink without onPassivate

Hi Thiago!

Well, I have different entry points to show a different amount of the 
same type of data. Either I can enter the page
1) using a PK (which results in a list of child entities) or
2) a combination of two PKs (a direct parent / child relation) or
3) an intervall (which directly results in child entities for the 
intervall having multiple roots) or
4) a search string
5) a.s.o.

This is all reflected in readable URLs.
The data and all componts used on my page are (more or less) the same 
regardless of the entry path. But to show some details I always use a 
combination of PKs which I do not have in my activation context for 
method 1, 3, 4, 5, but I know it from the hibernate objects anyway.

So consider I have a loop to build up my JSON Objects including an 
eventlink: I have to reset my page state prior eventlink creation which 
on the other hand destroys my initial onActivate context. So a 
workaround is something like this:

     push activation context
         reset context in loop and create eventlinks
     pop activation context

or simply a method which allows me to create the eventlink bypassing 
onPassivate and accepting a "new context object array". I know that this 
might introduce a different class of errors because the logic of link 
creation is now spread across different places, but I believe its still 
easier to deal with compared to modifying a "complex" page state in a loop.

The other way round: I can create PageLinks with arbitrary page 
activation context objects, why not EventLinks?


Jens

Sorry, I am a non native english speaker as you may have recognized 
already, hopefully you understand what I mean.


Am 21.08.18 um 23:56 schrieb Thiago H. de Paula Figueiredo:
> Hello!
>
> Why do you want to have EventLinks with an activation context different
> from the current one? This doesn't look good at first look, to be honest.
>
> On Thu, Aug 16, 2018 at 10:35 AM Jens Breitenstein <[email protected]>
> wrote:
>
>> Hi all!
>>
>> I use ComponentResources to create my EventLinks. As the page context
>> (in this example "id") is added to the link onPassivate gets called.
>> This results in a link like
>>
>>       /mypage:mycomponent?t:ac=id
>>
>> Each component context "cc1", "cc2" passed to the createEventLink method
>> results in a link like
>>
>> /mypage:mycomponent/cc1/cc2?t:ac=id
>>
>> My goal is to replace the exisiting ac, means the activation context of
>> the page which is used in onPassivate to create "arbitrary" eventlinks
>> like this
>>
>> /webui/mypage:mycomponent?t:ac=ec1/ec2
>>
>> without accessing the page members prior link creation. Of course it's
>> possible to convert the Link to URI / String and perform some string
>> manipulations, but I wonder if there is a "real Tapestry" solution?
>>
>>
>> Thanks in advance
>>
>> Jens
>>
>>
>>


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