On OCL as part of the metamodeling framework MOFLON

The metamodeling framework MOFLON combines MOF 2.0, OCL 2.0 and graph transformations to generate sophisticated metamodel implementations. In this paper we describe the role of OCL in MOFLON. Furthermore, we present a set of constraints which corrects, completes and improves MOF 2.0 for the application as graph schema language.