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https://issues.apache.org/jira/browse/SIS-115?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Desruisseaux closed SIS-115.
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> Ability to set NilReason on Boolean, Integer, Double and String objects
> -----------------------------------------------------------------------
>
> Key: SIS-115
> URL: https://issues.apache.org/jira/browse/SIS-115
> Project: Spatial Information Systems
> Issue Type: Improvement
> Components: Utilities
> Affects Versions: 0.3
> Reporter: Martin Desruisseaux
> Assignee: Martin Desruisseaux
> Fix For: 0.4
>
>
> In SIS 0.3, {{NilReason}} are stored by implementations of the
> {{org.apache.sis.xml.NilObject}} interface. However we can not implement this
> interface for {{Boolean}}, {{Integer}}, {{Double}}, {{String}} and other JDK
> classes that are {{final}}.
> The proposed workaround is to provide an internal {{PrimitiveTypeProperties}}
> class which will assign {{NilReason}} to a specific instance of {{Boolean}}
> or other JDK classes, using an {{IdentityHashMap}}. Inconvenient is that
> testing {{if (object instanceof NilObject)}} is no longer sufficient - we now
> need to use the {{NilReason.forObject(Object)}} method.
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