The following figure shows the PBDOM object hierarchy:
Figure: The PBDOM object hierarchy
PBDOM_OBJECT and its descendants
The base class for PBDOM objects that represent XML nodes, PBDOM_OBJECT, inherits from the PowerBuilder NonVisualObject class. Each of the node types is represented by a PBDOM class whose methods you use to access objects in a PBDOM node tree. PBDOM_OBJECT and its descendants are described in PBDOM node objects. You can also find some information about XML node types in the section called “Exporting and Importing XML Data” in Users Guide.
PBDOM_BUILDER
The PBDOM_BUILDER class also inherits from NonVisualObject. It serves as a factory class that creates a PBDOM_DOCUMENT from various XML input sources including a string, a file, and a DataStore.
Building a PBDOM_DOCUMENT from scratch
To build a PBDOM_DOCUMENT without a source that contains existing XML, use the PBDOM_DOCUMENT NewDocument methods.
PBDOM_EXCEPTION
The PBDOM_EXCEPTION class inherits from the PowerBuilder Exception class. It extends the Exception class with a method that returns a predefined exception code when an exception is raised in a PBDOM application. For more information about this class, see Handling PBDOM exceptions.
