3-Basic-GME-2 - Institute for Software Integrated Systems

Institute for Software Integrated Systems

Vanderbilt University

Copyright © Vanderbilt University/ISIS 2007

GME Basics

Janos Mathe

Zolt
án Molnár


Help
-
desk: gme
-
users list at
http://list.isis.vanderbilt.edu

Recap


UML concepts


Classes


Associations


Aggregation/Composition


Generalization/Inheritance



Additional concepts


Constraints

Recap


UML concepts


Classes


Associations


Aggregation/Composition


Generalization/Inheritance



Additional concepts


Constraints

Defining a DSML

L = < C, A, S, M
S
, M
C
>

Language component

Sign

Explanation

Concrete Syntax

C

Notation for representing models

Using the elements of

MetaGME
:
UML

extended with
stereotypes and OCL

Abstract Syntax

A

Ontology

The (important) concepts of a domain and their relations

Parsing

Mc

Mapping the concepts of A to the concepts of C

Creating the concepts in

A by using the concepts available in
MetaGME

Semantic Domain

S

Semantics describes meaning of the models

There can be multiple valid semantics

Semantic Mapping

Ms

Mapping the concepts of A to

S

Usually means writing an interpreter using GME’s BON/MON
interfaces to traverse the models

Defining a DSML

L = < C, A, S, M
S
, M
C
>

Language component

Sign

Explanation

Concrete Syntax

C

Notation for representing models

Using the elements of

MetaGME
:
UML

extended with
stereotypes and OCL

Abstract Syntax

A

Ontology

The (important) concepts of a domain and their relations

Parsing

Mc

Mapping the concepts of A to the concepts of C

Creating the concepts in

A by using the concepts available in
MetaGME

Semantic Domain

S

Semantics describes meaning of the models

There can be multiple valid semantics

Semantic Mapping

Ms

Mapping the concepts of A to

S

Usually means writing an interpreter using GME’s BON/MON
interfaces to traverse the models

Concrete Syntax for DSMLs in
GME

November 15, 2013

7

Directory structure


GME.exe


Main application



ModelMigrate.exe


XSLT (XML) based external model upgrader & transformer



Interfaces folder


Mga.idl useful when writing COM Interpreters (low
-
level)


Gme.idl useful when creating scripts



SDK folder


BON folder


BonImpl.h useful when writing BON Interpreters (high
-
level)


CreateNewComponent.exe


creates new interpreter skeletons



Paradigms folder


MetaGME folder (metamodel and paradigm for metamodeling)


SF folder (sample Signalflow metamodel/paradigm)



Doc folder


Tutorials folder



November 15, 2013

8

Basic terms 1.


Folders (container)



First Class Objects (FCO):


Atom (atomic object)


Model (container)


Set (aggregation)


Connection (association)


Reference (pointer, proxy)



Attributes


User
-
defined properties of FCOs



Aspects


User
-
defined views of models



Annotations


Textboxes inside models, provide visual aid

Defining a DSML

L = < C, A, S, M
S
, M
C
>

Language component

Sign

Explanation

Concrete Syntax

C

Notation for representing models

Using the elements of

MetaGME
:
UML

extended with
stereotypes and OCL

Abstract Syntax

A

Ontology

The (important) concepts of a domain and their relations

Parsing

Mc

Mapping the concepts of A to the concepts of C

Creating the concepts in

A by using the concepts available in
MetaGME

Semantic Domain

S

Semantics describes meaning of the models

There can be multiple valid semantics

Semantic Mapping

Ms

Mapping the concepts of A to

S

Usually means writing an interpreter using GME’s BON/MON
interfaces to traverse the models

November 15, 2013

10


Things to
Register


GME
Paradigms


GME
Components/Interpreters


in
to

Windows registry

(system or user)



Object Registry in GME


Information stored inside GME objects

(FCOs)


Object preferences


Object position



File types

(extensions)


Binary project
/model

file: .mga


XML project
/model

file: .xme


Binary paradigm file: .mta


XML paradigm file: .xmp

Basic terms 2.

<?xml version="1.0" encoding="UTF
-
8"?>

<!DOCTYPE project SYSTEM
"mga.dtd
">

<project […] metaname=“SF“>

<?xml version="1.0"?>

<!DOCTYPE paradigm SYSTEM "
edf.dtd
">

<paradigm name="SF“ […]

November 15, 2013

11

MetaInterpretation

MetaGME
interpreter

Metamodel

(model in MetaGME
paradigm)

Rootfolder

November 15, 2013

12

Meta
I
nterpretation

P
roject
/model

created

in MetaGME (aka. Metamodel)

paradigm (SF.mga)

<?xml version="1.0" encoding="UTF
-
8"?>

<!DOCTYPE project SYSTEM
"mga.dtd
">

<project […] metaname=“
MetaGME
“>

<name>
SF
</name>

<?xml version="1.0"?>

<!DOCTYPE paradigm SYSTEM "
edf.dtd
">

<paradigm name="
SF
“ […]

Paradigm (SF.xmp)


User initiated

translation


Sample sentence with the words
metamodel

and
paradigm
:


Q: “I interpreted my metamodel with MetaGME interpreter and I got
the error message that my paradigm can’t be registered.”


A: “Please check the Console Window for details about errors during
interpretation.”

November 15, 2013

13

Registering paradigms 1.

November 15, 2013

14

Registering paradigms 2.

Currently registered

Systemwide = for all users

Add new paradigm

November 15, 2013

15

Upgrading


T
o a
new metamodel
/paradigm

version



Reason: Users can change their language definition as they
wish, GME has no chance of being able to sort out obsolete
elements, doing replacements, …


Binary
model
file
s

might

be accepted


Export XML and Import XML
might

work


ModelMigrate tool (XSLT based transformations)


GReAT recommended for complex model transformations



T
o a
new GME

version


Binary
model
file
s

might

be accepted (definitely not in case
of major modifications to the internal datamodel)


Export XML and Import XML

must

work


Total Recompilation

of
user
-
written
components
(interpreters)

needed

November 15, 2013

16

Graphical User
Interface

November 15, 2013

17

Starting from empty project

Right click

for Context
menu

Top
-
level
elements
that can be
inserted

November 15, 2013

18

Exploring models

Double clicked

‘MyCompound’
model opened

November 15, 2013

19

Exploring models

Double click a
Model to see its
internals

November 15, 2013

20

Navigation

Back

Forward

Home (model opened first)

Cycle Aspects for current/all model(s)

Close model(s): current/all/all but current

Show next window

November 15, 2013

21

Add new parts

by Drag&Drop from palette

November 15, 2013

22

Add new parts

through Context menu

November 15, 2013

23

Result

November 15, 2013

24

Context aware UI elements

Selected
element

Context
sensitive
pallette

Attributes
of selected
element

November 15, 2013

25

Selected
element

Attributes of selected
element

Attributes of ‘Primitive’ defined in the
metamodel

November 15, 2013

26

Legal Parts allowed
in currently opened
model (Compound)

Currently opened model

Properties of the currently
opened model

November 15, 2013

27

Legal Parts allowed
in currently opened
model (Compound)

Currently opened model

Properties of the currently
opened model

Metamodel portion
where parts of
‘Compound’ are defined

November 15, 2013

28

Selected and currently
opened model

Properties of selected
element

Currently opened model

Properties of the currently
opened model

Kind

Name

Aspect

November 15, 2013

29

Operational modes

Edit (^1)

Connect (^2)

Disconnect (^3)

Set Mode (^4)

Zoom (^5)

Presentation (^6)

Non
-
sticky Connect (^7)

Non
-
sticky Disconnect (^8)

November 15, 2013

30

Connecting

in Connection Mode



Select source while mouse pointer is
black


Select destination while mouse pointer
is white



Step 1

Step 2

Done

Select Connection Mode

November 15, 2013

31

Connect through Context Menu

Step 1: select Source

November 15, 2013

32

Connect through Context Menu

Step 2: select Destination

November 15, 2013

33

Connect through Context Menu

Done

November 15, 2013

34

Connection removal


In Disconnect mode


Point & click on a connection


In Edit mode


Select ‘Delete’ from a connection’s context menu


Select ‘Disconnect all’ in a source/destination object’s
context menu (deletes all connections!)


In TreeBrowser


Select connection and delete it


Note: Connections are shown in TreeBrowser only if the
‘Display Connections’ option is turned on in ‘Tree Browser
Options’ dialog, accessible from the TreeBrowser’s context
menu




November 15, 2013

35

Type inheritance


Type, Subtype, Instance


A model created from scratch is a type


Explicit and implicit derivation/instantiation


A deep copy preserving the linkage


In subtypes:


New objects can be added


Attributes can be modified


Objects cannot be deleted


In instances:


Attributes can be modified


Only root models can be explicitly derived or instantiated to
avoid multiple dependency chains


Similar to prototype/clone technique


Enables model reuse, maintainability


Utilized in libraries

November 15, 2013

36

Engine

T

ABS

T

V6

I

Car

T

ABSX

ST

V6

I

Cool Car

ST

ABSXj

I

V6

I

My Car

I

ABSi

I

V6

I

A Car

I


T Type

ST SubType


I Instance


Aggregation


Dependency


Secondary Dep.

Type Inheritance (dependency chain)

November 15, 2013

37

InstanceOf

SubTypeOf

Car

T

Cool Car

ST

My Car

I

A Car

I

Engine

T

V6

I

V6

I

V6

I

V6

I

ABS

T

ABSX

ST

ABSXj

I

ABSi

I

Type Inheritance (dependency chain) 2.

November 15, 2013

38

Keyboard shortcuts


Ctrl + 1..8 : switch between modes


Ctrl + Z, Ctrl + U : Undo/Redo


Ctrl + F : Search


TreeBrowser


Enter : show fco


for Models it shows a model’s internals


Shift + Enter: show fco in parent


shows every fco (models too) in its parent


TAB: jump to search combo box


Ctrl + TAB: cycling


cycle through Aggregate, Inheritance, Meta Pages


F2: rename active element


View


Enter: show model (down in hier.) or follow reference


Backspace: show parent model (up in hier.)


A: cycle through Attribute/Preferences/Property pages for selected element


Numpad +/
-
: zoom in / out by 5%


TAB: cycle through aspects for active model


Z/X: back / forward


Ctrl + B : jump to browser (as Locate command does)


Ctrl + I : jump to Object Inspector (attribute panel)


Object Inspector (Attribute Panel)


CTRL + D: restore default value of an attribute


November 15, 2013

39

Drag & Drop


Drag & drop for FCOs


within Treebrowser


from Treebrowser to models and vice versa


among models


Drag & drop modifiers:


None


move


Ctrl


copy


Ctrl + Shift

create a reference


Alt


instance


Alt + Shift


subtype


Drag & Drop for Files


Paradigm file (.mta, .xmp) gets registered (only if no project is
open)


.mga project file is opened


.xme project file is imported


Defining a DSML

L = < C, A, S, M
S
, M
C
>

Language component

Sign

Explanation

Concrete Syntax

C

Notation for representing models

Using the elements of

MetaGME
:
UML

extended with
stereotypes and OCL

Abstract Syntax

A

Ontology

The (important) concepts of a domain and their relations

Parsing

Mc

Mapping the concepts of A to the concepts of C

Creating the concepts in

A by using the concepts available in
MetaGME

Semantic Domain

S

Semantics describes meaning of the models

There can be multiple valid semantics

Semantic Mapping

Ms

Mapping the concepts of A to

S

Usually means writing an interpreter using GME’s BON/MON
interfaces to traverse the models

Recap


UML concepts


Classes


Associations


Aggregation/Composition


Generalization/Inheritance



Additional concepts


Constraints

Example
-

Binary Tree

November 15, 2013

47

Constraints

Paradigm
-
, project
-

and model
-
specific constraints


Expressed in Object Constraint Language (OCL) v1.4
part of UML



Evaluate Constraints


On events


OnCloseModel


OnConnected etc.


On user request


On the current model


On the whole project


Only selected constraints


Only on selected objects


November 15, 2013

48

Constraints 2.


Priority


Context


Detailed error reporting


Automatic syntax check

November 15, 2013

49

Miscellaneous features


Search Tool


Regular expression based


Useful to find all references to an object also


Aspect Synchronization


Object position synchronization


External Editor


attribute editing


Table Editor


Model Libraries


Console window scripting


Python/Perl/JavaScript/VBScript


3 predefined variables:


gme

implements IGMEOLEApp (gme.idl)


it

implements IGMEOLEIt (gme.idl)


project

implements IMgaProject (mga.idl)


SDK/CreateNewComponent.exe


Creates empty interpreter/add
-
on skeletons

Tricks


Connecting nodes time efficiently


Pasting


Icons

Quiz


What's GME?


What is it good for?


What does metamodeling mean?


What are models good for?


What is an interpreter good for?

Quiz
-

Answers


What does metamodeling mean?


Capturing the core concepts and the rules of a domain on the right
level of abstractions in metamodels


Using these metamodels to enforce the creation of valid domain
models


What's GME?


Metaprogrammable graphical model builder


What is it good for?


Create visual Domain
-
Specific Modeling Languages (DSMLs)


Create a customized modeling environment that allows domain experts
to build models of the domain


What are models good for?


They provide a centralized view


What is an interpreter good for?


They allow the information to be extracted from models so that code,
documentation, etc. can be generated