public Interface UnionField<CONVERSION_MANAGER extends ConversionManager, NAMESPACE_RESOLVER extends NamespaceResolver>

Subclass of Field for fields that are mapped to unions. Maintains a list of schema types instead of just one single schema type. Schema types can be added using the addSchemaType API. Constants has a list of useful constants including a list of QNames for built-in schema types that can be used when adding schema types.

When reading and writing an element that is mapped with an UnionField, a conversion to each of the schema types on the field (in the order they are specified ) is tried until a conversion is successful. The Java type to convert to is based on the list of schema type to Java conversion pairs specified on the field.