WBEM SDK - Mapping CIM Object to XML

Question

Hi all !
In Sun WBEM SDK such classes as CIMClass, CIMProperty, CIMInstance have
methods toXML(.....).
Where can I find specification, used for CIM-to-XML mapping in Sun WBEM SDK?
I will appreciate any assistance you might be able to offer me.
Thank you in advance for your attention.
Please, mail me on [email protected]
Sincerely yours,
Ihor Krivenchuck

Answer 1

To construct an object from XML, builder pattern looks like a good option. Here is a quick design
public class XMLCoder{
public static Object decode(InputSream in, XMLBeanMapper xm) throws some_exception_if_ASM_object_is_in_inconsistent_state {
public static void encode(OutputStream out, XMLBeanMapper){
public class BeanProperty{
private String name;
priavte String value;
.. cons,accessors and muatators ...
public interface XMLBeanMapper{
public void setProperty(BeanProperty bp);
public Object getObject() throws some_exception_if_ASM_object_is_in_inconsistent_state ;
public BeanProperty getNextProperty();//returns null if no more property needs to be converted to xml
for each class that needs conversion to and from XML, you need a XMLBeanMapper class.
XMLCoder.encode parses XML, creates a BeanProperty from each element and calls setProperty of XMLBeanMapper. The XMLBeanMapper calls necessary method of your ASM object to set the value. When it is done with parsing the xml document, it calls the getObject on the XMLBeanMapper and returns the object or throws exception if needed.
XMLCoder.decode keeps calling the getNextProperty unless it returns null. It writes necessary xml element from the data provided by the BeanProperty instance.
Depending on how complex your xml is you will probably need to change the BeanProperty class to keep the XMLcoder generic. For example to handle child elements, you may chain BeanProperty instances, or if the XML may have arbitrarily more information for a property than a name-value pair, you may need to use a hashtable.
Benefits:
You have a generic class to parse XML
The unique XmlBeanMapper implementation for each ASM type will be pretty simple. You can have a generic XmlBeanMapper implementation when the xml elements contains the name of the method
Disadvantages:
You need to write and maintain a XMLBeanMapper implementation for each type of ASM class.