JAXB Validation
Two (plus one) types of validation can occur.
- Unmarshal Time happens when the XML is unmarshalled into a content tree.
- On Demand happens when the Validator.validate method is called to validate a content tree.
- Fail Fast validation occurs when items are added to a tree. When an element is added in violation, the client application is immediately warned. Not all JAXB providers support this.
- There are three ways to handle validation.
- You can use the default event handler, which will attempt to continue if it gets a warning, but will stop the program when it reaches a fatal error.
- You can write your own event handler.
You can use the ValidationEventCollector, which returns ValidationEvents in the form of a Collection.