utility method to retrieve the constraint instance container from a constraint instance

refs 2708

org.fortiss.tooling.kernel/trunk/src/org/fortiss/tooling/kernel/utils/ConstraintsUtils.java

@@ -28,6 +28,7 @@ import org.fortiss.tooling.kernel.model.constraints.ConstraintsFactory;
 import org.fortiss.tooling.kernel.model.constraints.ErrorConstraintInstanceStatus;
 import org.fortiss.tooling.kernel.model.constraints.FailedConstraintInstanceStatus;
 import org.fortiss.tooling.kernel.model.constraints.IConstrained;
+import org.fortiss.tooling.kernel.model.constraints.IConstraintInstanceContainer;
 import org.fortiss.tooling.kernel.model.constraints.IConstraintInstanceStatus;
 import org.fortiss.tooling.kernel.model.constraints.OutdatedConstraintInstanceStatus;
 import org.fortiss.tooling.kernel.model.constraints.SuccessConstraintInstanceStatus;
@@ -37,15 +38,22 @@ import org.fortiss.tooling.kernel.service.IConstraintService.IFix;
 /**
  * Utility methods for dealing with constraints.
  * 
- * TODO(VA): @Flo can you review this?
- * 
  * @author aravantinos
  * @author $Author$
  * @version $Rev$
- * @ConQAT.Rating YELLOW Hash: 1FD0972E2BF35906E71C53C916060193
+ * @ConQAT.Rating YELLOW Hash: 115825B5DDF0458D48AC3BEA8D4CBF97
  */
 public class ConstraintsUtils {
 
+	/**
+	 * Returns the container of <code>ci</code>. Assumes that it is of type
+	 * {@link IConstraintInstanceContainer}!
+	 */
+	public static IConstraintInstanceContainer
+			getConstraintInstanceContainer(ConstraintInstance ci) {
+		return (IConstraintInstanceContainer)ci.eContainer();
+	}
+
 	/**
 	 * Defines <code>constrained</code> as the <code>i</code>-th constrained model element of
 	 * <code>ci</code>. Leaves the other elements as they are if they exist, fill them with