Hi Collin, A local element declaration is one which is declared within the scope [1] of a complex type definition. In your schema "author", "title", etc... are local element declarations. "catalog" is global. If an element declaration is local, getEnclosingCTDefinition() returns the XSComplexTypeDefinition for the enclosing complex type definition. What you were trying to find in the API is getTypeDefinition() [2] which returns the type definition (either simple or complex) for the element. If you're looking for a more comprehensive example on how to walk an XSModel take a look at the xni.PSVIWriter sample.
Thanks. [1] http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/#e-scope [2] http://www.w3.org/Submission/2004/SUBM-xmlschema-api-20040309/xml-schema-api.html#XSElementDecl-typeDefinition Michael Glavassevich XML Parser Development IBM Toronto Lab E-mail: [EMAIL PROTECTED] E-mail: [EMAIL PROTECTED] "Collin Chu" <[EMAIL PROTECTED]> wrote on 09/06/2006 02:54:17 AM: > I'm a beginer of Xerces. I want to parse the following simple XML Schema: > > <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:complexType> > </xsd:element> > </xsd:sequence> > <xsd:attribute name="id" type="xsd:string"/> > </xsd:complexType> > </xsd:element> > </xsd:schema> > > When I used sample code " QueryXS.java", it only listed the top- > level element "catalog". I need to list all the elements defined in > the above schema. I added the code "XSElementDeclaration elem = > (XSElementDeclaration)map.item(i);" to capture the declaration of > element "catalog" after the following code in QueryXS.java: > XSNamedMap map = model.getComponents(XSConstants. > ELEMENT_DECLARATION); > if (map.getLength() != 0) { > System.out. > println("*************************************************"); > System.out.println("* Global element > declarations: {namespace} name "); > System.out. > println("*************************************************"); > for (int i = 0; i < map.getLength(); i++) { > But I don't know how to get complex type declaration of element > "catalog". I tried to use "getEnclosingCTDefinition()" of class > "XSElementDeclaration", however, it returned "null", since the scope > of "catalog" is global, not local (I don't know why). > > So, could any experts please tell me how to list all the elements of > an XML Schema (please show me the corresponding code), and explain > the meaning of scope of element declaration. Thanks a lot. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
