Alexandr Klimov created XMLSCHEMA-30:
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Summary: 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
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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