10.6. Type Declaration Roles

JBoss Rules out of the box with plain Java objects as facts. However, should a user wish to define the model directly to the rules engine, they can do so by declaring a new type. This can also be used when there is a domain model already built, but the user wants to complement this model with additional entities that are used mainly during the reasoning process.

Facts may have meta information associated to them. Examples of meta information include any kind of data that is not represented by the fact attributes and is consistent among all instances of that fact type. This meta information may be queried at runtime by the engine and used in the reasoning process.