[geotk] [JIRA] Created: (GEOTK-22) Collections created internaly by metadata should be List instead than Set

[Martin Desruisseaux (JIRA)]

Collections created internaly by metadata should be List instead than Set
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                 Key: GEOTK-22
                 URL: http://jira.geotoolkit.org/browse/GEOTK-22
             Project: Geotoolkit
          Issue Type: Bug
          Components: Metadata
    Affects Versions: 3.01
            Reporter: Martin Desruisseaux
            Assignee: Martin Desruisseaux
             Fix For: 3.02


The {{org.opengis.metadata}} API uses {{Collection}}, in order to let the choice for implementors between {{List}} and {{Set}}. The Geotoolkit implementation uses {{Set}} by default. However this choice is unsafe because the elements added in those {{Set}} may be modified by the user after the insertion, thus breaking the {{HashSet}} contract.

The safest fix is to relies on {{List}} instead than {{Set}}. This change doesn't have any impact on the public API. However if a user cast the return value of a metadata method, the result of the cast may change.


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