Schemas augment the Infoset
- Crucially, schemas are about much more than validation:
- They tell you much more than ‘yes’ or ‘no’
- They assign types to every element and attribute information item they
validate
- This is done by adding properties to the Infoset
- To produce what’s called the post schema-validation Infoset (or PSVI)
- Outcome information is present on every node in the PSVI:
- How much of the tree below was processed
- Local and recursive validity information
- So schema-aware processing is a mapping from Infosets to Infosets.
