Hi,
look at the article from the Best Schema Practices Web site:
http://www.xfront.com/HideVersusExpose.pdf
however I can't say whether Xerces-C follows 100% the mechanisms described
there.
I believe it does :-)
Cheers
Radovan
> -----Original Message-----
> From: David R. [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, 14 May 2002 16:20
> To: [EMAIL PROTECTED]
> Subject: RE: DOM_Node::getPrefix() always returns NULL
>
>
> Hello Radovan, I had never used the attribute elementFormDefault before. Do
> I have to specify this attribute only in the Schema definition, or
> somewhere
> else? I proceeded like this:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";
> xmlns:my="http://david.com/david-schema";
> targetNamespace="http://david.com/david-schema";
> elementFormDefault="qualified">
>
> <xs:element name="addressbook">
> <xs:complexType>
> <xs:sequence>
> <xs:element ref="my:person" minOccurs='1' maxOccurs='unbounded'/>
> </xs:sequence>
> </xs:complexType>
> </xs:element>
>
> <xs:element name="person" type="xs:string"/>
>
> </xs:schema>
>
> But the output I get is exactly the same than before (prefix is NULL). Do
> you have some other hints of something I can try? Thanks.
>
>
> >From: "Radovan Chytracek" <[EMAIL PROTECTED]>
> >Reply-To: [EMAIL PROTECTED]
> >To: <[EMAIL PROTECTED]>
> >Subject: RE: DOM_Node::getPrefix() always returns NULL
> >Date: Tue, 14 May 2002 15:43:43 +0200
> >
> >Hi,
> >
> > did you try to set the attribute as:
> >
> > elementFormDefault="qualified"
> >
> >???
> >
> >Radovan
> >
> > > -----Original Message-----
> > > From: David R. [mailto:[EMAIL PROTECTED]]
> > > Sent: Tuesday, 14 May 2002 15:41
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: DOM_Node::getPrefix() always returns NULL
> > >
> > >
> > > Sorry for the delay in my response Gareth. I had to extract a piece of
> >code
> > > from my application in order to make a more simple example.
> > >
> > > I have tried both Xerces 1.6 and 1.7 with identical results.
> > >
> > > The parsing is performed in the usual way by means of the
> > > DOMParser::parse()
> > > method, previously setting the following attributes:
> > > - setValidationScheme( DOMParser::Val_Always);
> > > - setDoNamespaces( true );
> > > - setDoSchema( true );
> > > - setValidationSchemaFullChecking( true );
> > >
> > > Once the DOM tree has been constructed in memory, the following lines
> >are
> > > executed:
> > > DOM_Node& node = document.getDocumentElement();
> > > cout << "Document element getNodeName(): " <<
> > > node.getNodeName().transcode()
> > > << endl;
> > > cout << "Document element getTagName(): " <<
> > > ((DOM_Element&)node).getTagName().transcode() << endl;
> > > cout << "Document element getNamespaceURI(): " <<
> > > node.getNamespaceURI().transcode() << endl;
> > > cout << "Document element getPrefix(): " <<
> node.getPrefix().transcode()
> ><<
> > > endl;
> > > cout << "Document element getLocalName(): " <<
> > > node.getLocalName().transcode() << endl;
> > > DOM_Node& child = node.getChildNodes().item(1);
> > > cout << "Child element getNodeName(): " <<
> >child.getNodeName().transcode()
> > > << endl;
> > > cout << "Child element getTagName(): " <<
> > > ((DOM_Element&)child).getTagName().transcode() << endl;
> > > cout << "Child element getNamespaceURI(): " <<
> > > child.getNamespaceURI().transcode() << endl;
> > > cout << "Child element getPrefix(): " << child.getPrefix().transcode()
> ><<
> > > endl;
> > > cout << "Child element getLocalName(): " <<
> > > child.getLocalName().transcode()
> > > << endl;
> > >
> > > This is the output I get:
> > > Document element getNodeName(): addressbook
> > > Document element getTagName(): addressbook
> > > Document element getNamespaceURI(): http://david.com/david-schema
> > > Document element getPrefix():
> > > Document element getLocalName(): addressbook
> > > Child element getNodeName(): person
> > > Child element getTagName(): person
> > > Child element getNamespaceURI(): http://david.com/david-schema
> > > Child element getPrefix():
> > > Child element getLocalName(): person
> > >
> > > I wonder whether the method DOM_Node::getPrefix() is the only that is
> > > failing in the returned value or some other methods
> > > (DOM_Node::getNodeName(), DOM_Element::getTagName()) are ignoring
> > > the prefix
> > > as well.
> > >
> > > I am not an experienced developer in Xerces programming so it might be
> >due
> > > to my inexperience. Some advice would be appreciated.
> > >
> > > Best regards,
> > > David Ruana
> > >
> > >
> > > >From: Gareth Reakes <[EMAIL PROTECTED]>
> > > >Reply-To: [EMAIL PROTECTED]
> > > >To: <[EMAIL PROTECTED]>
> > > >Subject: Re: DOM_Node::getPrefix() always returns NULL
> > > >Date: Tue, 14 May 2002 09:29:19 +0100 (BST)
> > > >
> > > >Hi,
> > > > I seem to remember a bug being reported not so long ago where
> > > >prefix's were being stripped out when validated. What version
> of xerces
> >are
> > > >you using? Have you tried the nightly build? Please feel free to post
> >the
> > > >code snippet so we can take a look.
> > > >
> > > >Gareth
> > > >
> > > >
> > > >On Tue, 14 May 2002, David R. wrote:
> > > >
> > > > > In the following example, I am parsing the XML file and trying to
> >get
> > > >the
> > > > > prefix of the node <my:person>David</my:person>.
> > > > >
> > > > > The call to DOM_Node::getPrefix() always returns NULL, while I
> > > >understand
> > > > > that it should return "my". However, the call to
> > > >DOM_Node::getNamespaceURI()
> > > > > does return the correct value "http://david.com/david-schema";.
> > > > >
> > > > > Some guidance on how to get the prefix would be appreciated.
> > > > >
> > > > > Best regards,
> > > > > David Ruana
> > > > >
> > > > > --------------- File david3.xsd
> > > > >
> > > > > <?xml version="1.0" encoding="UTF-8"?>
> > > > > <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";
> > > > > xmlns:my="http://david.com/david-schema";
> > > > > targetNamespace="http://david.com/david-schema";>
> > > > >
> > > > > <xs:element name="addressbook">
> > > > > <xs:complexType>
> > > > > <xs:sequence>
> > > > > <xs:element ref="my:person" minOccurs='1'
> >maxOccurs='unbounded'/>
> > > > > </xs:sequence>
> > > > > </xs:complexType>
> > > > > </xs:element>
> > > > >
> > > > > <xs:element name="person" type="xs:string"/>
> > > > >
> > > > > </xs:schema>
> > > > >
> > > > > --------------- File david3.xml
> > > > >
> > > > > <?xml version="1.0" encoding="UTF-8"?>
> > > > > <my:addressbook
> >xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
> > > > > xmlns:my="http://david.com/david-schema";
> > > > > xsi:schemaLocation="http://david.com/david-schema
> > > david3.xsd">
> > > > >
> > > > > <my:person>David</my:person>
> > > > > </my:addressbook>
> > > > >
> > > > >
> > > > >
> > > > > _________________________________________________________________
> > > > > Descargue GRATUITAMENTE MSN Explorer en
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> > > > >
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> > > > >
> > > >
> > > >--
> > > >Gareth Reakes, Head of Product Development
> > > >DecisionSoft Ltd. http://www.decisionsoft.com
> > > >Office: +44 (0) 1865 203192
> > > >
> > > >
> > > >
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