Hi Hansgerd, XML Schema processors are not required to follow an import for a namespace it's already seen and Xerces will not follow such imports by default. You would need to enable the "honour-all-schemaLocations" [1] feature to get the behaviour you want or add an include to "xsd3.xsd" in "xsd1.xsd" (as you've already discovered). The latter solution being the one I would go with if I were publishing my schema for others to use with potentially any XML Schema processor (not just Xerces or XMLSpy).
Thanks. [1] http://xerces.apache.org/xerces2-j/features.html#honour-all-schemaLocations Michael Glavassevich XML Parser Development IBM Toronto Lab E-mail: mrgla...@ca.ibm.com E-mail: mrgla...@apache.org Hansgerd Schneider <hansgerd.schnei...@gmx.de> wrote on 04/11/2010 01:53:06 PM: > Hi > > I need some help with a problem that i ran into. I've created a simple > example to demonstrate it. > > There are 3 xsd files with two different targetNamespaces nsA and nsB. I > pasted them at the end of this mail. > The files use imports in the following way: > > xsd1(nsA) imports xsd2(nsB) imports xsd3(nsA) > > A complexType (Type3) is defined in xsd3. > This is extended by a complexType (Type2) in xsd2. > This is extended by a complexType (Type1) in xsd1. > > If i validate these files with XMLSpy, i get the message that these are > all valid xml-schema files. > I do believe that they are valid too, but... > > If i try to load xsd1 with SchemaFactory.getSchema(...) (Xerces 2.9.1) > oder try to run xjc with it, i get the following error message: > [ERROR] src-resolve: Cannot resolve the name 'a:Type3' to a(n) 'type > definition' component. > line 11 of file:/home/hansgerd/xml/examples/ex1/xsd2.xsd > > If i uncomment the xs:include of xsd3 in xsd1 everything works fine with > no error. > > I don't understand what's wrong with these xsd files and why XMLSpy > comes to a different result than Xerces. > Which one ist correct? XMLSpy oder Xerces? > > These are the contents of my xsd files. > > File: ./xsd1.xsd targetNamespace="nsA" > <?xml version="1.0" encoding="UTF-8"?> > <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"; > xmlns:b="nsB" targetNamespace="nsA" > elementFormDefault="qualified" > attributeFormDefault="unqualified"> > > <xs:import namespace="nsB" schemaLocation="xsd2.xsd"/> > <!-- <xs:include schemaLocation="xsd3.xsd"/> --> > > <xs:complexType name="Type1"> > <xs:complexContent> > <xs:extension base="b:Type2"/> > </xs:complexContent> > </xs:complexType> > > </xs:schema> > > File: ./xsd2.xsd targetNamespace="nsB" > <?xml version="1.0" encoding="UTF-8"?> > <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"; > targetNamespace="nsB" > xmlns:a="nsA" > elementFormDefault="qualified" > attributeFormDefault="unqualified"> > > <xs:import namespace="nsA" schemaLocation="xsd3.xsd"/> > > <xs:complexType name="Type2"> > <xs:complexContent> > <xs:extension base="a:Type3"/> > </xs:complexContent> > </xs:complexType> > > </xs:schema> > > File: ./xsd3.xsd targetNamespace="nsA" > <?xml version="1.0" encoding="UTF-8"?> > <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"; > targetNamespace="nsA" > elementFormDefault="qualified" > attributeFormDefault="unqualified"> > > <xs:complexType name="Type3"/> > > </xs:schema> > > Thanks, > > Hansgerd Schneider > > --------------------------------------------------------------------- > To unsubscribe, e-mail: j-users-unsubscr...@xerces.apache.org > For additional commands, e-mail: j-users-h...@xerces.apache.org
