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https://issues.apache.org/jira/browse/JENA-1614?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Claude Warren deleted JENA-1614:
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> When registering an incompatible Datatype a warning should be logged
> --------------------------------------------------------------------
>
> Key: JENA-1614
> URL: https://issues.apache.org/jira/browse/JENA-1614
> Project: Apache Jena
> Issue Type: Improvement
> Reporter: Claude Warren
> Assignee: Claude Warren
> Priority: Minor
>
> Classes that extend AdhocDatatype (or Basedatatype) and want to allow
> multiple instances of the datatype class to be considered equal must do the
> following:
> # Override BaseDatatype.isEqual(LiteralLabel litLabel1, LiteralLabel
> litLabel2) to call isEqualByTerm(LiteralLabel litLabel1, LiteralLabel
> litLabel2).
> # Override Object.equals(Object obj)
> # Override Object.hashCode(), potentially calling BaseDatatype.getHashCode(
> LiteralLabel lit )
> There should be a warning in the log if TypeMapper.register(RDFDatatype type
> ) is called and:
> # There is an existing datatype registered for the type.getJavaClass() ; and
> # There registered type.isEquals( type.registeredType ) is false.
>
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