Hi all,
i've started working with XML Schema support in the datatype package.
Here are some proposals for improvement :
(I'm not a Java-Pro, so my workarounds are q & d !)
The SchemaParser class doesn't handle includes of other schemata.
------------------------------------
As a workaround, i added the following lines to SchemaParser.java:
private static final QName XSD_INCLUDE = QName.get("include", XSD_NAMESPACE);
/** Parses the given schema document
*
* @param schemaDocument is the document of the XML Schema
*/
public void build( Document schemaDocument ) {
Element root = schemaDocument.getRootElement();
if ( root != null ) {
//handle schema includes
Iterator includeIter = root.elementIterator( XSD_INCLUDE);
while (includeIter.hasNext()) {
Element includeElement = (Element) includeIter.next();
String inclSchemaInstanceURI =
includeElement.attributeValue("schemaLocation");
EntityResolver resolver = schemaDocument.getEntityResolver();
try {
if ( resolver == null ) {
throw new InvalidSchemaException( "No EntityResolver available
so could not resolve the schema URI: " +
inclSchemaInstanceURI );
}
InputSource inputSource = resolver.resolveEntity( null,
inclSchemaInstanceURI );
if ( inputSource == null ) {
throw new InvalidSchemaException( "Could not resolve the
schema URI: " + inclSchemaInstanceURI );
}
SAXReader reader = new SAXReader();
Document inclSchemaDocument = reader.read( inputSource );
build( inclSchemaDocument );
}
catch (Exception e) {
System.out.println( "Failed to load schema: " +
inclSchemaInstanceURI );
System.out.println( "Caught: " + e );
e.printStackTrace();
throw new InvalidSchemaException( "Failed to load schema: " +
inclSchemaInstanceURI );
}
}
//handle elements
....
Missing support of element types, derived from simpleType:
---------------------------------------------------------------------------------
// Implementation methods
//-------------------------------------------------------------------------
/** processes an XML Schema <element> tag
*/
protected void onDatatypeElement( Element xsdElement , DocumentFactory
parentFactory ) {
String name = xsdElement.attributeValue( "name" );
String type = xsdElement.attributeValue( "type" );
QName qname = getQName( name );
DatatypeElementFactory elementFactory = getDatatypeElementFactory( qname );
if ( type != null ) {
// register type with this element name
XSDatatype dataType = getTypeByName(type);
if (dataType!=null) {
elementFactory.setChildElementXSDatatype( qname, dataType );
}
else {
QName typeQName=getQName(type);
namedTypeResolver.registerTypedElement(xsdElement,typeQName,parentFactory);
}
return;
}
// handle element types derrived from simpleTypes
Element xsdSimpleType = xsdElement.element( XSD_SIMPLETYPE );
if ( xsdSimpleType != null ) {
System.out.println("Agfa-sg: handle element types derrived from
simpleTypes for element: " + name);
XSDatatype dataType = loadXSDatatypeFromSimpleType( xsdSimpleType );
if (dataType != null) {
System.out.println("dataType (from loadXSDatatypeFromSimpleType) = " +
dataType);
elementFactory.setChildElementXSDatatype( qname, dataType );
}
}
Element schemaComplexType = xsdElement.element( XSD_COMPLEXTYPE );
.....
Greetings
Stefan Graeber
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