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Re: Help dynamic selects

by Alejandro Scandroli-2 :: Rate this Message:

Hey Juan!

I found the culprit.
There is a missing key in the editorMap in the archetype's
applicationContext.xml
Here it is:

<entry>
<key>
<value>
supportsExtension('org.trails.descriptor.annotation.PossibleValuesDescriptorExtension')
or
supportsExtension('org.trails.descriptor.annotation.InitialValueDescriptorExtension')
</value>
</key>
<bean class="org.apache.tapestry.util.ComponentAddress">
<constructor-arg index="0">
<value>trails:Editors</value>
</constructor-arg>
<constructor-arg index="1">
<value>filteredAssociation</value>
</constructor-arg>
</bean>
</entry>

You need that entry in place to make @PosibleValues work.

About the mapping thing:

* @ManyToOne and @Transient are incompatibles
* "mappedBy" properties are readonly, you will need some extra code
to make them "editable"
* It's best to use the Collection's inverse property together with the mappedBy
* If Provincia is a "child" collection (aka: composition) region &
pais properties should be readonly, there is no point in using the
@PosibleValues there. If you want to use @PosibleValues Provincia
shouldn't be marked as "child" collection.

I'm sending you two mapping examples one with Provincia as a
composition and the other one with Provincia as an aggregation.

I hope it helps.
Saludos.
Alejandro.

On Mon, Jul 6, 2009 at 1:07 PM, Alejandro
Scandroli<ascandroli@...> wrote:

> Hi Juan
>
> There is some inconsistencies in your mappings.
> But I tried to fix them to send you a working example and I found out
> that I can't make the PossibleValues annotation work outside the
> Simple example. So maybe there is something wrong or some
> configuration missing. I will try again tonight, and let you know.
>
> Saludos.
> Alejandro.
>
> PD:- I'm from Argentina too :)
>
>
> On Sun, Jul 5, 2009 at 7:20 PM, Juancevi<juancesarvillalba@...> wrote:
>>
>> Hello, my name is John I am from Argentina, I am newbie at trails, I have
>> nested combos mark the link
>> http://www.nabble.com/Enum-in-search-tt18317768.html#a18319874
>> but I can not be that I'm doing wrong.
>>
>>
>> Region---
>>
>> @OneToMany(mappedBy = "region", cascade = CascadeType.ALL)
>> @JoinColumn(name = "region_id")
>> @Collection(child = false , allowRemove=false)
>> public List<Pais> getPaises() {
>> return paises;
>> }
>>
>>
>> Pais---
>>
>> @OneToMany(mappedBy = "pais", cascade = CascadeType.ALL)
>> @JoinColumn(name = "pais_id")
>> @Collection(child = true)
>> public List<Provincia> getProvincias() {
>> return provincias;
>> }
>>
>>
>> Provincia---
>>
>> @ManyToOne
>> @Transient
>> @InitialValue("pais.region")
>> public Region getRegion() {
>> return region;
>> }
>>
>>
>> @ManyToOne
>> @PossibleValues("region.paises")
>> public Pais getPais() {
>> return pais;
>> }
>>
>>
>> I want when choosing a region, only to drain the countries of that region,
>> but this I do not works.
>>
>> Any help thank you very much!
>> --
>> View this message in context: http://www.nabble.com/Help-dynamic-selects-tp24345072p24345072.html
>> Sent from the Trails - Users mailing list archive at Nabble.com.
>>
>>
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>>
>>
>

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