public void undo()

in modeler/cayenne-modeler/src/main/java/org/apache/cayenne/modeler/undo/PasteUndoableEdit.java [79:172]
89 lines of code
25 McCabe index (conditional complexity)

    public void undo() throws CannotUndoException {
        RemoveAttributeAction rAttributeAction = actionManager
                .getAction(RemoveAttributeAction.class);

        RemoveAction rAction = actionManager.getAction(RemoveAction.class);

        RemoveRelationshipAction rRelationShipAction = actionManager
                .getAction(RemoveRelationshipAction.class);

        RemoveCallbackMethodAction rCallbackMethodAction = actionManager
                .getAction(RemoveCallbackMethodAction.class);

        RemoveProcedureParameterAction rProcedureParamAction = actionManager
                .getAction(RemoveProcedureParameterAction.class);

        if (content instanceof DataMap) {
            if (where instanceof DataChannelDescriptor) {
                rAction.removeDataMap((DataMap) content);
            } else if (where instanceof DataNodeDescriptor) {
                rAction.removeDataMapFromDataNode(
                        (DataNodeDescriptor) where,
                        (DataMap) content);
            }
        } else if (where instanceof DataMap) {
            if (content instanceof DbEntity) {
                rAction.removeDbEntity(map, (DbEntity) content);
            } else if (content instanceof ObjEntity) {
                rAction.removeObjEntity(map, (ObjEntity) content);
            } else if (content instanceof Embeddable) {
                rAction.removeEmbeddable(map, (Embeddable) content);
            } else if (content instanceof QueryDescriptor) {
                rAction.removeQuery(map, (QueryDescriptor) content);
            } else if (content instanceof Procedure) {
                rAction.removeProcedure(map, (Procedure) content);
            }
        } else if (where instanceof DbEntity) {
            if (content instanceof DbEntity) {
                rAction.removeDbEntity(map, (DbEntity) content);
            } else if (content instanceof DbAttribute) {
                rAttributeAction.removeDbAttributes(
                        map,
                        (DbEntity) where,
                        new DbAttribute[] {
                            (DbAttribute) content
                        });
            } else if (content instanceof DbRelationship) {
                rRelationShipAction.removeDbRelationships(
                        (DbEntity) where,
                        new DbRelationship[] {
                            (DbRelationship) content
                        });
            }
        } else if (where instanceof ObjEntity) {
            if (content instanceof ObjEntity) {
                rAction.removeObjEntity(map, (ObjEntity) content);
            } else if (content instanceof ObjAttribute) {
                rAttributeAction.removeObjAttributes(
                        (ObjEntity) where,
                        new ObjAttribute[] {
                            (ObjAttribute) content
                        });
            } else if (content instanceof ObjRelationship) {
                rRelationShipAction.removeObjRelationships(
                        (ObjEntity) where,
                        new ObjRelationship[] {
                            (ObjRelationship) content
                        });
            } else if (content instanceof ObjCallbackMethod) {
            		ObjCallbackMethod[] methods = new ObjCallbackMethod[] {
                            (ObjCallbackMethod) content };
            		for(ObjCallbackMethod callbackMethod : methods) {
	            		rCallbackMethodAction.removeCallbackMethod(
	                			methods[0].getCallbackType(), 
	                			callbackMethod.getName());
            		}
            }
        } else if (where instanceof Procedure) {
            final Procedure procedure = (Procedure) where;
            if (content instanceof ProcedureParameter) {
                rProcedureParamAction.removeProcedureParameters(
                        procedure,
                        new ProcedureParameter[] {
                            (ProcedureParameter) content
                        });
            }
        } else if (where instanceof Embeddable) {
            if (content instanceof Embeddable) {
                rAction.removeEmbeddable(map, (Embeddable) content);
            } else if (content instanceof EmbeddableAttribute) {
                rAttributeAction.removeEmbeddableAttributes((Embeddable) where,
                        new EmbeddableAttribute[]{(EmbeddableAttribute) content});
            }
        }
    }