OrderedAxisAuthorityFactory need to preserve CRS metadata
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         Key: GEOT-854
         URL: http://jira.codehaus.org/browse/GEOT-854
     Project: GeoTools
        Type: Bug

  Components: referencing  
    Versions: 2.3.M0, 2.2-RC2    
    Reporter: Martin Desruisseaux
 Assigned to: Martin Desruisseaux 
    Priority: Critical


Currently, OrderedAxisAuthorityFactory removes most CRS metadata (especially 
the authority code) when it reordered CRS axis. It was intentional in order to 
avoid claming that a CRS is EPSG:4326 while using a different axis order than 
what CRS does. However, the usage in GIS field for most softwares is to use 
(longitude,latitude) axis order, no matter what EPSG said.

In addition, it has been reported that a recent OGC decision said that "EPSG" 
code means (longitude,latitude) order. The (latitude,longitude) order should be 
specified through a more complex string, which contains the URL.

(Note: does anyone has an URL? I would like to put it in the documentation for 
OrderedAxisAuthorityFactory)

So OrderedAxisAuthorityFactory should not removes anymore the metadata from the 
modified CRS. This change has the following side-effect: AuthorityBackedFactory 
needs to create transformation paths between CRS that may not be as EPSG said 
they are.


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