【文章內(nèi)容簡介】
resents an association between two Persistable objects. Each Persistable is referenced by an ObjectReference. ObjectToVersionLink (abstract) provides a binary type of link between a version object (role A) and a persistable object (role B). When used in navigating from the version object to its associated persistable object, only the latest iteration is found. Navigating from the persistable object to its associated version object acts a typical navigation, but is applicable only from the latest iteration. VersionToObjectLink(abstract) VersionToVersionLink (abstract) provides a binary type of link between two versions. Navigating between them is applicable only from the latest iteration on either side, and results in finding the other side39。s latest iteration. 通用的鏈接對象 IteratedUsageLink (abstract) 實現(xiàn) The IteratedUsageLink is an association between an iteration and a master. It is generally homogeneous in nature and is used to build structures. IteratedReferenceLink 實現(xiàn) A link specifying that an iteration (implementation) refers to another master.