Thanks Adam. Lets go with #2 then. I generated an
"api-changes.properties" file listing, for each classes, which
properties (getter methods) were added (+) or deprecated (-). For each
new getter, the word after the colon is the UML identifier in the ISO
specification.

https://svn.apache.org/repos/asf/sis/trunk/core/sis-metadata/src/main/resources/org/apache/sis/metadata/api-changes.properties

We can use that file as a patch applied at runtime for allowing the
toString(), asMap() and asTreeTable() methods to produce the new model.

    Martin



Le 22/09/14 14:34, Adam Estrada a écrit :
> Martin,
>
> This looks really good and it would seem that #2 would help
> "future-proof" this component. Let's go with that?
>
> Adam
>
> On Mon, Sep 22, 2014 at 5:26 AM, Martin Desruisseaux
> <[email protected]> wrote:
>> Apache SIS metadata objects can represent themselves as a java.util.Map
>> view or a tree. Up to now, those views were matching almost exactly the
>> Java interfaces. But now we have a mismatch between the Java interfaces
>> used by trunk (ISO 19115:2003) and the model partially available in
>> Apache SIS (ISO 19115:2014). Which model should we show in Map views,
>> tree views and string representations?
>>
>> Examples: a small metadata block according ISO 19115:2003 model (the one
>> currently shown by Apache SIS trunk):
>>
>>     Citation
>>       ??Title...................................................... European 
>> Petroleum Survey Group
>>       ??Cited responsible party
>>       ?   ??Organisation name...... Oil and Gas Producers
>>       ?   ??Contact info
>>       ?   ?   ??Online resource
>>       ?   ?       ??Linkage............ http://www.epsg.org
>>       ?   ?       ??Function......... Information
>>       ?   ??Role............................................. Principal 
>> investigator
>>       ??Presentation form.................. Table digital
>>
>>
>> The same metadata block according ISO 19115:2014 model (the one
>> currently shown by Apache SIS branches):
>>
>>     Citation
>>       
>> ??Title.................................................................. 
>> European Petroleum Survey Group
>>       ??Cited responsible party
>>       ?   ??Role......................................................... 
>> Principal investigator
>>       ?   ??Party
>>       ?       ??Organisation name...... Oil and Gas Producers
>>       ?       ??Contact info
>>       ?           ??Online resource
>>       ?               ??Linkage............ http://www.epsg.org
>>       ?               ??Function......... Information
>>       ??Presentation form.............................. Table digital
>>
>>
>> The differences are small (the new model has an additional "Party"
>> node). Which model to show?
>>
>>  1. If Apache SIS trunk show the old model, we will still have a simple
>>     relationship between the views and the Java interface used by trunk.
>>     But we would have difference between the models used by the trunk
>>     and the branches.
>>  2. If Apache SIS trunk show the new model, we will have more
>>     consistency between the trunk and the branches and users can start
>>     getting familiar with the new model. But users may be confused by
>>     the fact that the views (tree, map) do not match exactly the Java
>>     interfaces (until we get a new GeoAPI release).
>>
>>
>> What would peoples prefer?
>>
>>     Martin
>>

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