AppletTalk.com Java discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  PLEASE PLEASE HELP - Castor porblem          AppletTalk.com Forum Index -> Java Software Tools View previous topic :: View next topic   Author Message Gandu Guest Posted: Mon Jan 12, 2004 6:16 am    Post subject: PLEASE PLEASE HELP - Castor porblem I am a newbie to Castor. I downloaded all the jar files, made changes to the classpath etc, but I keep on getting exceptions being thrown. The XML schema file is as follows: <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <xsd:element name="catalog"> <xsd:complexType> <xsd:sequence> <xsd:element name="book" minOccurs="0" maxOccurs="unbounded"> <xsd:complexType> <xsd:sequence> <xsd:element name="author" type="xsd:string"/> <xsd:element name="title" type="xsd:string"/> <xsd:element name="genre" type="xsd:string"/> <xsd:element name="price" type="xsd:float"/> <xsd:element name="publish_date" type="xsd:date"/> <xsd:element name="description" type="xsd:string"/> </xsd:sequence> <xsd:attribute name="id" type="xsd:string"/> </xsd:complexType> </xsd:element> </xsd:sequence> </xsd:complexType> </xsd:element> </xsd:schema> If I type in: C:>java org.exolab.castor.builder.SourceGenerator -i C:\Temp\Test.xsd I get the error message: Exception in thread "main" java.lang.IllegalArgumentException: The prefix 'xml' is reserved (XML 1.0 Specification) and cannot be declared. at org.exolab.castor.xml.Namespaces.addNamespace(Namespaces.java:130) at org.exolab.castor.xml.UnmarshalHandler.startPrefixMapping(UnmarshalHandler.java:1953) at org.apache.xerces.parsers.AbstractSAXParser.startNamespaceMapping(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source) at org.apache.xerces.impl.dtd.XMLDTDValidator.startElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentScannerImpl$ContentDispatcher.scanRootElementHook(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:583) at org.exolab.castor.mapping.Mapping.loadMappingInternal(Mapping.java:515) at org.exolab.castor.mapping.Mapping.loadMapping(Mapping.java:441) at org.exolab.castor.xml.schema.SimpleTypesFactory.loadTypesDefinitions(SimpleTypesFactory.java:414) at org.exolab.castor.xml.schema.SimpleTypesFactory.getType(SimpleTypesFactory.java:380) at org.exolab.castor.xml.schema.SimpleTypesFactory.getBuiltInType(SimpleTypesFactory.java:202) at org.exolab.castor.xml.schema.Schema.getSimpleType(Schema.java:919) at org.exolab.castor.xml.schema.Schema.getSimpleType(Schema.java:858) at org.exolab.castor.xml.schema.TypeReference.resolveTypeReference(TypeReference.java:113) at org.exolab.castor.xml.schema.TypeReference.getType(TypeReference.java:69) at org.exolab.castor.xml.schema.ElementDecl.getType(ElementDecl.java:327) at org.exolab.castor.xml.schema.ElementDecl.validate(ElementDecl.java:743) at org.exolab.castor.xml.schema.Group.validate(Group.java:471) at org.exolab.castor.xml.schema.ComplexType.validate(ComplexType.java:795) at org.exolab.castor.xml.schema.ElementDecl.validate(ElementDecl.java:748) at org.exolab.castor.xml.schema.Group.validate(Group.java:471) at org.exolab.castor.xml.schema.ComplexType.validate(ComplexType.java:795) at org.exolab.castor.xml.schema.ElementDecl.validate(ElementDecl.java:748) at org.exolab.castor.xml.schema.Schema.validate(Schema.java:1466) at org.exolab.castor.builder.SourceGenerator.generateSource(SourceGenerator.java:312) at org.exolab.castor.builder.SourceGenerator.generateSource(SourceGenerator.java:394) at org.exolab.castor.builder.SourceGenerator.generateSource(SourceGenerator.java:425) at org.exolab.castor.builder.SourceGenerator.main(SourceGenerator.java:760) Any help would be greatly appreciated. Thanks in advance for your help. Back to top ZJT Guest Posted: Mon Feb 09, 2004 3:20 am    Post subject: Re: PLEASE PLEASE HELP - Castor porblem [email]cpptutor2000 (AT) yahoo (DOT) com[/email] (Gandu) wrote in message news:<3c7c9804.0401112216.208ff066 (AT) posting (DOT) google.com>... Quote: I am a newbie to Castor. I downloaded all the jar files, made changes to the classpath etc, but I keep on getting exceptions being thrown. The XML schema file is as follows: xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xsd:element name="catalog" xsd:complexType xsd:sequence xsd:element name="book" minOccurs="0" maxOccurs="unbounded" xsd:complexType xsd:sequence xsd:element name="author" type="xsd:string"/ xsd:element name="title" type="xsd:string"/ xsd:element name="genre" type="xsd:string"/ xsd:element name="price" type="xsd:float"/ xsd:element name="publish_date" type="xsd:date"/ xsd:element name="description" type="xsd:string"/ /xsd:sequence xsd:attribute name="id" type="xsd:string"/ /xsd:complexType /xsd:element /xsd:sequence /xsd:complexType /xsd:element /xsd:schema If I type in: C:>java org.exolab.castor.builder.SourceGenerator -i C:\Temp\Test.xsd I get the error message: Exception in thread "main" java.lang.IllegalArgumentException: The prefix 'xml' is reserved (XML 1.0 Specification) and cannot be declared. at org.exolab.castor.xml.Namespaces.addNamespace(Namespaces.java:130) at org.exolab.castor.xml.UnmarshalHandler.startPrefixMapping(UnmarshalHandler.java:1953) at org.apache.xerces.parsers.AbstractSAXParser.startNamespaceMapping(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source) at org.apache.xerces.impl.dtd.XMLDTDValidator.startElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentScannerImpl$ContentDispatcher.scanRootElementHook(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) at org.exolab.castor.xml.Unmarshaller.unmarshal(Unmarshaller.java:583) at org.exolab.castor.mapping.Mapping.loadMappingInternal(Mapping.java:515) at org.exolab.castor.mapping.Mapping.loadMapping(Mapping.java:441) at org.exolab.castor.xml.schema.SimpleTypesFactory.loadTypesDefinitions(SimpleTypesFactory.java:414) at org.exolab.castor.xml.schema.SimpleTypesFactory.getType(SimpleTypesFactory.java:380) at org.exolab.castor.xml.schema.SimpleTypesFactory.getBuiltInType(SimpleTypesFactory.java:202) at org.exolab.castor.xml.schema.Schema.getSimpleType(Schema.java:919) at org.exolab.castor.xml.schema.Schema.getSimpleType(Schema.java:858) at org.exolab.castor.xml.schema.TypeReference.resolveTypeReference(TypeReference.java:113) at org.exolab.castor.xml.schema.TypeReference.getType(TypeReference.java:69) at org.exolab.castor.xml.schema.ElementDecl.getType(ElementDecl.java:327) at org.exolab.castor.xml.schema.ElementDecl.validate(ElementDecl.java:743) at org.exolab.castor.xml.schema.Group.validate(Group.java:471) at org.exolab.castor.xml.schema.ComplexType.validate(ComplexType.java:795) at org.exolab.castor.xml.schema.ElementDecl.validate(ElementDecl.java:748) at org.exolab.castor.xml.schema.Group.validate(Group.java:471) at org.exolab.castor.xml.schema.ComplexType.validate(ComplexType.java:795) at org.exolab.castor.xml.schema.ElementDecl.validate(ElementDecl.java:748) at org.exolab.castor.xml.schema.Schema.validate(Schema.java:1466) at org.exolab.castor.builder.SourceGenerator.generateSource(SourceGenerator.java:312) at org.exolab.castor.builder.SourceGenerator.generateSource(SourceGenerator.java:394) at org.exolab.castor.builder.SourceGenerator.generateSource(SourceGenerator.java:425) at org.exolab.castor.builder.SourceGenerator.main(SourceGenerator.java:760) Any help would be greatly appreciated. Thanks in advance for your help. For Castor 0.9.5.2 The issue occurs with newer versions of Xerces than the version 1.4 that ships with Castor. The older version works ok. For some reason, when the newer version of Xerces encounters an "xml" prefixed attribute, such as "xml:lang" it tries to automatically start a prefix mapping for "xml". Which, in my opinion, is technically incorrect. They shouldn't be doing that. According to the w3c, the "xml" prefix should never be declared. The reason it started appearing in the new Castor (0.9.5.2), was because of a switch to SAX 2 by default during unmarshalling. Solution: A built in work-around has been checked into the Castor CVS and will automatically exist in any post 0.9.5.2 releases. For those who are using 0.9.5.2 and can't upgrade I found a simple workaround (tested with Xerces 2.5) , at first I thought about disabling namespace processing in Xerces, but then realized that it's already disabled by default by Castor...so I have no idea why they call #startPrefixMapping when namespace processing has been disabled. But in any event... explicitly enabling namespace processing seems to fix the problem: in the castor.properties file change the following line: org.exolab.castor.parser.namespaces=false to: org.exolab.castor.parser.namespaces=true Note: that work-around has only been tested with Xerces 2.5. 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