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https://issues.apache.org/jira/browse/XMLSCHEMA-30?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexandr Klimov updated XMLSCHEMA-30:
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Attachment: sample_proj.zip
> Each type from W3C base schema (http://www.w3.org/2001/XMLSchema) is equals
> to each other
> -----------------------------------------------------------------------------------------
>
> Key: XMLSCHEMA-30
> URL: https://issues.apache.org/jira/browse/XMLSCHEMA-30
> Project: XmlSchema
> Issue Type: Bug
> Affects Versions: 2.0.2, 2.0.3, 2.0.4
> Environment: Oracle JDK-1.6
> Oracle JDK-1.7
> Reporter: Alexandr Klimov
> Priority: Critical
> Labels: XmlSchemaType, comparison, equals, hashCode
> Attachments: sample_proj.zip
>
>
> h2. MAIN DESCIPRTION
> At this time, all simple types of the base xml schema _( W3C Schema has
> namesapce http://www.w3.org/2001/XMLSchema )_ *always equlals to each other*
> from point of view *Object@equals* method, but they have different hash codes.
> I've attched a simple sample_proj.zip project to be more clean.
> Such situation *may lead to wrong behaviour* of some Set or Map
> implementations.
> F.e. ImmutableSet of Guava project doesn't copy all items from
> java.util.HashSet over creation operation _( ImmutableSet#copyOf )_
> *Moreover*, such behaviuor isn't in accordance with [Oracle
> rules|http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html#hashCode()]
> h2. DETAILS
> Comparison of a XmlSchemaType (both simple and complex) is performed by
> *XmlSchemaObject#equals* method.
> This method takes in account folowing properties of a XmlSchemaObject:
> * lineNumber
> * linePosition
> * sourceURI
> But all base W3C xsd types _(namespace http://www.w3.org/2001/XMLSchema )_
> has one peculiarity: all the above properties is not set throughout base W3C
> schema creation.
> *XmlSchemaCollection#addSimpletype* method is responsible for creation all
> these base schema simple types.
> In result, all these "synthatic" types may be distinguished by they QNames
> only.
> h2. SIGGESTION
> I suggest to override *equals* method on *XmlSchemaType* class with taking in
> account its *namedDelegate* field comparison result.
>
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