Examining Namespaces and Classes

The class %XML.NamespacesOpens in a new tab provides two class methods that you can use to examine XML namespaces and the classes contained in them:

GetNextClass()

classmethod GetNextClass(namespace As %String, 
            class As %String) as %String {}

Returns the next class (alphabetically) after the given class, in the given XML namespace. This method returns null when there are no more classes.

GetNextNamespace()

classmethod GetNextNamespace(namespace As %String) as %String {}

Returns the next namespace (alphabetically) after the given namespace. This method returns null when there are no more namespaces.

In both cases, only the current InterSystems IRIS® data platform namespace is considered. Also, mapped classes are ignored.

For example, the following method lists the XML namespaces and their classes, for the current InterSystems IRIS namespace:

ClassMethod WriteNamespacesAndClasses()
{
  Set ns=""
  Set ns=##class(%XML.Namespaces).GetNextNamespace(ns)

  While ns '=""
  {
    Write !, "The namespace ",ns, " contains these classes:"
    Set cls=""
    Set cls=##class(%XML.Namespaces).GetNextClass(ns,cls)
    
    While cls '=""
    {
      Write !, "   ",cls
      Set cls=##class(%XML.Namespaces).GetNextClass(ns,cls)
      }
      
      Set ns=##class(%XML.Namespaces).GetNextNamespace(ns)
      }
}

When executed in the Terminal, this method generates output like the following:

 
The namespace http://www.address.org contains these classes:
   ElRef.NS.Address
   GXML.AddressNS
   MyApp4.Obj.Address
   MyAppNS.AddressNS
   Obj.Attr.Address
   Obj.Ns.Address
   Obj.Ns.AddressClass
The namespace http://www.doctor.com contains these classes:
   GXML.DoctorNS
The namespace http://www.one.org contains these classes:
   GXML.AddressNSOne
   GXML.DoctorNSOne
   GXML.PersonNSOne 
...

XML Standards

Generating XML Schemas from Classes