NOREX A Distributed Reengineering Environment

17th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

NOREX

A Distributed Reengineering

EnvironmentRadu Marinescu

LOOSE Research Group Politehnica University of Timişoara

radu.marinescu@cs.upt.ro

loose.upt.ro

27th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

Generic Reengineering Environment

37th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

iPlasma: Example of Reeng. Environment

Model Extractors

MCC / FAST Memoria / Recoder

ModelsHisMo MEMORIA Membrain

build

Analyses

MetricsDetection Strategies

CodeDuplication

Data-flowAnalyses

use

Front-end

INSIDER

integrate

47th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

Four Layers of Metamodeling Architecture

Layer

Meta Meta Model

Meta Model

Model

User Objects

Description

Defines the core ingredients sufficient for defining languages for specifying meta-models

Defines a language for specifying Models

Defines a language to describe an information domain.

Describes a specific situation in an information domain.

Example

(CDIF) MetaEntity, MetaAttribute(MOF) Class, MofAttribute

(UML) Class, Attribute, Association(Database) Table, Column, Row

Student, Course, enrolledin

Student#3, Course#5,Student#3.enrolledin.Course#5

57th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

The power of going Meta-Meta...

67th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

Concepts Entities

Examples: color , drawArea() , GraphicFigure, lrg.drawing.figures etc

Entities can be described by an Entity Type Examples:

variable, method, class, package

Entities have Properties … and their Entity Type knows how to “compute” them Examples:

variable color is a protected attribute method drawArea() has a 25 lines of code class GraphicFigure is abstract etc.

Entity Types belong to a Containment Hierarchy Entities contain groups of other entities Ex: a class contains methods and attributes

77th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

Containment Hierarchy

87th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

Relations

Entity Entity Type

dictionaries

PropertyComputer

GroupBuilder

FilteringRule

ResultEntity

GroupEntity

* ** *

97th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

retrieve

look-upin dictionary

do you knowCBO property?

Computing of Properties

ViewUI(Entity)“CBO”

?class

(EntityType)

PropertyComputers

CBO29.0

(ResultEntity)

numerical(EntityType)

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

(GroupEntity)

(GroupEntity)

applyFiltermodel package

Filters

retrieve

look-upin dictionary

package(EntityType)

FilteringRules

model package

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

How do our tools collaborate?

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

Only data exchange

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

• Different programming languages• Different meta-models• Different front-ends

Why?

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

NOREXDistributed collaborative reengineering

Our solution

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

Features

• Language independent• Distributed• Community focused

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

Distributed collaboration

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

What you do

• Declare your meta-model (in MOF)• Decouple the tool’s services• Specify your services

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

Clients and Servers

Clients have the data model model is “shaped” by a client-specific meta-model

Servers have the processors

reengineering analyses (e.g metrics, visualizations etc) assume another meta-model accesses to meta-model are expressed as

command objects

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

Encapsulate model in command objectspublic int NoPM(MMClass aClass) {int publicCount = 0;for(MMMethod aMethod : aClass.getMethods()) if(aMethod.isPublic()) publicCount++;return publicCount;}

public int NoPM(Object aClass, CollectionCommand methodsCom, BooleanCommand isPublicCom) {int publicCount = 0;for(Object aMethod : methodsCom.execute(aClass)) if(isPublicCom.execute(aMethod)) publicCount++;return publicCount;}

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

Create a NOREX Service

Service Manifesto specifies the entity on which the service runs specifies the command objects that need to be

provided

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

Configuring a service to run

Do the mapping between the two meta-models translate client’s into

servers’ meta-models “Lazy” approach

I don’t translate the whole meta-model, but only what is needed for the analysis

I do it only once stored in a dictionary

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

Creating Service Object

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

Results are Transparent

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

NOREX is not a toy...

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7th Workshop on SEERE, Risan, 2007

NOREX: A Distributed Reengineering Environment

Dr. Radu Marinescu

NOREX

A Distributed Reengineering

EnvironmentRadu Marinescu

LOOSE Research Group Politehnica University of Timişoara

radu.marinescu@cs.upt.ro

loose.upt.ro