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https://issues.apache.org/jira/browse/XERCESC-1975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13551226#comment-13551226
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Alberto Massari commented on XERCESC-1975:
------------------------------------------
Yes, the exception is expected, and handled: the
UnionDatatypeValidator::checkContent attempts to validate the incoming data
with every child validator, and stops when one of them accepts it. If all of
them throw a validation error, then a different exception
(VALUE_no_match_memberType) is thrown.
> InvalidDatatypeValueException thrown when parsing a UnionDataType
> -----------------------------------------------------------------
>
> Key: XERCESC-1975
> URL: https://issues.apache.org/jira/browse/XERCESC-1975
> Project: Xerces-C++
> Issue Type: Bug
> Components: Validating Parser (XML Schema)
> Affects Versions: 3.1.1
> Reporter: Ashish Singhal
> Priority: Blocker
> Attachments: TestDoc.xml, TestSchema.xsd
>
>
> InvalidDatatypeValueException is thrown when parsing an XML document that
> contains a Union data type and the union is contains another simple data
> type, eg:
> Given this schema:
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";
> elementFormDefault="qualified" attributeFormDefault="unqualified">
> <xs:element name="TestDoc">
> <xs:complexType>
> <xs:sequence>
> <xs:element name="SomeElement"/>
> </xs:sequence>
> <xs:attribute name="testAttribute" type="SubString"/>
> </xs:complexType>
> </xs:element>
> <xs:simpleType name="SubPattern">
> <xs:restriction base="xs:string">
> <xs:pattern value=".*\{.*\}.*"/>
> </xs:restriction>
> </xs:simpleType>
> <xs:simpleType name="SubString">
> <xs:union memberTypes="SubPattern xs:string"/>
> </xs:simpleType>
> </xs:schema>
> This XML should be valid:
> <?xml version="1.0" encoding="UTF-8"?>
> <TestDoc xsi:noNamespaceSchemaLocation="TestSchema.xsd"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
> testAttribute="true"
> >
> <SomeElement/>
> </TestDoc>
> However an InvalidDatatypeValueException is thrown when validating this
> document.
> Changing my schema to remove SubPattern from the SubString union, fixes the
> issue, but it's not the solution I'm looking for.
> I would like xerces-c to validate the document correctly.
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