The Eclipse Modeling Framework (EMF) provides a modeling and code generation framework for Eclipse applications based on structured data models. Although EMF provides basic operations for modifying EMF based models, a framework for graphical definition of rule-based modification of EMF models is still missing. In this paper we present a framework for in-place EMF model transformation based on graph transformation. Transformations are visually defined by rules on object patterns typed over an EMF core model. Defined transformation systems can be compiled to Java code building up on generated EMF classes. As running example different refactoring methods for Ecore models are considered.