filterID utility method

refs 2712

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

@@ -21,8 +21,10 @@ import java.util.NoSuchElementException;
 import java.util.function.Consumer;
 
 import org.eclipse.emf.common.util.EList;
+import org.eclipse.emf.common.util.TreeIterator;
+import org.eclipse.emf.ecore.EObject;
 import org.fortiss.tooling.kernel.extension.IConstraint;
-import org.fortiss.tooling.kernel.model.constraints.ConstrainedWithChecksum;
+import org.fortiss.tooling.kernel.model.IIdLabeled;
 import org.fortiss.tooling.kernel.model.constraints.ConstraintInstance;
 import org.fortiss.tooling.kernel.model.constraints.ConstraintsFactory;
 import org.fortiss.tooling.kernel.model.constraints.ErrorConstraintInstanceStatus;
@@ -244,4 +246,18 @@ public class ConstraintsUtils {
 			fix.accept(status);
 		}
 	}
+
+	/** Removes the IDs of the given object and of its sub-elements. */
+	public static void filterIDs(EObject obj) {
+		if(obj instanceof IIdLabeled) {
+			((IIdLabeled)obj).setId(0);
+		}
+		TreeIterator<EObject> it = obj.eAllContents();
+		while(it.hasNext()) {
+			EObject elt = it.next();
+			if(elt instanceof IIdLabeled) {
+				((IIdLabeled)elt).setId(0);
+			}
+		}
+	}
 }