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From "Florian Wiesner (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AMQ-929) Invalid XSD (according to XML Spy)
Date Sat, 16 Dec 2006 00:30:02 GMT
    [ https://issues.apache.org/activemq/browse/AMQ-929?page=comments#action_37692 ] 
            
Florian Wiesner commented on AMQ-929:
-------------------------------------

With the xsd embedded into the Spring context, I get the following stacktrace:

org.springframework.beans.factory.BeanDefinitionStoreException: Line 4531 in XML document
from class path resource [resources/junit-application-context.xml] is invalid; nested exception
is org.xml.sax.SAXParseException: cos-nonambig: "http://activemq.org/config/1.0":redeliveryPolicy
and WC[##any] (or elements from their substitution group) violate "Unique Particle Attribution".
During validation against this schema, ambiguity would be created for those two particles.
Caused by: org.xml.sax.SAXParseException: cos-nonambig: "http://activemq.org/config/1.0":redeliveryPolicy
and WC[##any] (or elements from their substitution group) violate "Unique Particle Attribution".
During validation against this schema, ambiguity would be created for those two particles.
	at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:236)
	at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:172)
	at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:382)
	at com.sun.org.apache.xerces.internal.impl.xs.XSConstraints.reportSchemaError(XSConstraints.java:315)
	at com.sun.org.apache.xerces.internal.impl.xs.XSConstraints.fullSchemaChecking(XSConstraints.java:463)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleEndElement(XMLSchemaValidator.java:2246)
	at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.endElement(XMLSchemaValidator.java:814)
	at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanEndElement(XMLNSDocumentScannerImpl.java:719)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1685)
	at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:368)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:834)
	at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)
	at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:148)
	at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:250)
	at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:292)
	at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:77)
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:405)
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:357)
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
	at org.springframework.beans.factory.xml.XmlBeanFactory.<init>(XmlBeanFactory.java:73)
	at org.springframework.beans.factory.xml.XmlBeanFactory.<init>(XmlBeanFactory.java:61)
	at de.florian_wiesner.TestJMSLogReader.setUp(TestJMSLogReader.java:29)
	at junit.framework.TestCase.runBare(TestCase.java:125)
	at junit.framework.TestResult$1.protect(TestResult.java:106)
	at junit.framework.TestResult.runProtected(TestResult.java:124)
	at junit.framework.TestResult.run(TestResult.java:109)


> Invalid XSD (according to XML Spy)
> ----------------------------------
>
>                 Key: AMQ-929
>                 URL: https://issues.apache.org/activemq/browse/AMQ-929
>             Project: ActiveMQ
>          Issue Type: Bug
>    Affects Versions: 4.1.0
>         Environment: N/A
>            Reporter: Stephen Cresswell
>            Priority: Minor
>
> XmlSpy reports http://people.apache.org/repository/org.apache.activemq/xsds/activemq-core-4.1-incubator-SNAPSHOT.xsd
is invalid with the following message:
> <xs:element ref='tns:topic'> makes the content model non-deterministic. Possible
causes: name equality, overlapping occurance or substitution groups.
> It's complaining because it has no way to validate whether it should validate against
tns:topic/tns:queue or the xs:any for the following element
> <xs:element name='destination' minOccurs='0' maxOccurs='1'>
>    <xs:complexType>
>       <xs:choice minOccurs='0' maxOccurs='1'>
>          <xs:element ref='tns:queue'/>
>          <xs:element ref='tns:topic'/>
>          <xs:any/>
>       </xs:choice>
>    </xs:complexType>
> </xs:element>
> Possible fix adapted from http://www.thescripts.com/forum/threadedpost1605613.html:
> <xs:element name="destination" minOccurs="0" maxOccurs="1">
> 	<xs:complexType>
> 		<xs:choice minOccurs="0" maxOccurs="1">
> 			<xs:element name="extensions">
> 				<xs:sequence maxOccurs="1">
> 					<xs:any/>				
> 				</xs:sequence>
> 			</xs:element>
> 			<xs:element ref="tns:queue"/>
> 			<xs:element ref="tns:topic"/>
> 		</xs:choice>
> 	</xs:complexType>
> </xs:element>
> But I suspect difficult to fix as the XSD is autogenerated + you'll lose backwards compatability
with previous documents. The problem occurs repeatedly throughout the schema.

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