Release 10.1A: OpenEdge Development:
Programming Interfaces

DOM node interfaces as subtypes

Since it is necessary to be able to use some of the other specialized interfaces as well as the simplified interface, the DOM objects that have these specialized interfaces are implemented as Subtypes of the Progress object.

The Progress 4GL supports the following interfaces as Subtypes on the X-NODEREF:

CDATA-SECTION
COMMENT
DOCUMENT-FRAGMENT
ELEMENT
ENTITY-REFERENCE
PROCESSING-INSTRUCTION
TEXT

The default Subtype will be ELEMENT.

Table 19–2 shows the “simplified” DOM Node interface nodeNames and nodeValues.

Table 19–2: Node names and values 

Type	nodeName	nodeValue
DocumentType	Document type name	Null
DocumentFragment	#document-fragment	Null
Element	Tag name	Null
EntityReference	Name of entity referenced	Null
Text	#text	Content of the text node
CDATASection	#cdata-section	Content of the CDATA-section
Comment	#comment	Content of the comment
ProcessingInstructi on	Target	Content excluding the target

The Progress 4GL NAME attribute will be used to return the nodeName, while a NODE-VALUE character attribute will return or set the node’s nodeValue.