Implementing and Registering the AssertionBuilder Interface

Assertion Builder class for custom assertion should implement AssertionBuilder<T> interface. The interface type can be Element, XMLStreamReader or OMElement.

Interface contains two methods: build() and getKnownElements().

Implementation of build() method should construct Assertion from the incoming type. It can be PrimitiveAssertion (without attributes or child elements), NestedPrimitiveAssertion (without attributes but with nested policy element) and JaxbAssertion (assertion described by any XML schema).

getKnownElements() method must return QNames of assertion elements from which assertion can be built.

Implementing the build method of the AssertionBuilder interface is straightforward (in the case of JaxbAssertions you can extend the JaxbAssertionBuilder class, which provides an appropriate JAXB context and some other useful methods).

The implementation of buildCompatible may need some more consideration if your assertion represents an element with attributes and/or child elements.

Registration of your AssertionBuilder with the AssertionBuilderRegistry is easy enough: simply add a bean for your AssertionBuilder to the cxf-* file of your module, or to the application's custom cfg file.