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From "Martin Desruisseaux (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SIS-80) PropertyDescriptor to implement ExtendedElementInformation
Date Thu, 21 Mar 2013 19:45:17 GMT

     [ https://issues.apache.org/jira/browse/SIS-80?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Martin Desruisseaux updated SIS-80:
-----------------------------------

    Fix Version/s: 0.3
         Assignee: Martin Desruisseaux
      Description: 
The {{org.apache.sis.metadata}} package contains a package-private {{PropertyDescriptor}}
class, which currently implements {{org.opengis.parameter.ParameterDescriptor}}. The later
is not really appropriate since metadata are not parameters. A better choice would be {{ExtendedElementInformation}}
from {{org.opengis.metadata}}.

In theory, {{ExtendedElementInformation}} is only for extension to the ISO 19115 standard.
However, its API appears to be also suitable as a reflection API for ISO 19115 itself.

While the package-private class is not directly exposed to users, the interface implemented
by this class is accessible by users. So the choice of {{ParameterDescriptor}} / {{ExtendedElementInformation}}
is significant.


  was:
The {{org.apache.sis.metadata}} package contains a package-private {{PropertyDescriptor}}
class, which currently implements {{org.opengis.parameter.ParameterDescriptor}}. The later
is not really appropriate since metadata are not parameters. The {{org.opengis.feature.type.PropertyDescriptor}}
interface would probably be more appropriate. However the feature packages are not yet part
of GeoAPI standard (they are still in the pending part), while {{ParameterDescriptor}} is
part of GeoAPI 3.0.0.

While the package-private class is not directly exposed to users, the interface implemented
by this class is accessible by users. So the choice of {{ParameterDescriptor}} / {{PropertyDescriptor}}
is significant. For now we stick on {{ParameterDescriptor}}, but a future Apache SIS version
may need a transition path to features.


          Summary: PropertyDescriptor to implement ExtendedElementInformation  (was: org.apache.sis.metadata.PropertyDescriptor
to implement org.opengis.feature.type.PropertyDescriptor)
    
> PropertyDescriptor to implement ExtendedElementInformation
> ----------------------------------------------------------
>
>                 Key: SIS-80
>                 URL: https://issues.apache.org/jira/browse/SIS-80
>             Project: Spatial Information Systems
>          Issue Type: Task
>          Components: Metadata
>            Reporter: Martin Desruisseaux
>            Assignee: Martin Desruisseaux
>            Priority: Minor
>             Fix For: 0.3
>
>
> The {{org.apache.sis.metadata}} package contains a package-private {{PropertyDescriptor}}
class, which currently implements {{org.opengis.parameter.ParameterDescriptor}}. The later
is not really appropriate since metadata are not parameters. A better choice would be {{ExtendedElementInformation}}
from {{org.opengis.metadata}}.
> In theory, {{ExtendedElementInformation}} is only for extension to the ISO 19115 standard.
However, its API appears to be also suitable as a reflection API for ISO 19115 itself.
> While the package-private class is not directly exposed to users, the interface implemented
by this class is accessible by users. So the choice of {{ParameterDescriptor}} / {{ExtendedElementInformation}}
is significant.

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