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 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.
