MigraRIA project overview (2012 mdwe )

http://quercusseg.unex.es@quercusseg

Roberto Rodríguez Echeverría, José María

Conejero, Pedro J. Clemente, Víctor M. Pavón, Fernando Sánchez-Figueroa

Model Driven Extraction of the Navigational Concern of Legacy Web Applications


2

• Context

• Motivation

• Modernization process framework

• Domain

• MD Reverse Engineering of a LWA– Extraction

– Representation

• Case study

• Evaluation

• Conclusions

• Future work


MIGRARIA

3

a step inside a larger project


MIGRARIA: 10000 feet view

4

LWA RIA

LWA ConceptualModel

RIA Conceptual Model

model

codeT2M M2T

M2M

Modernization process framework- Model-driven approach

- Metamodels (DSL)- Transformations

- Architecture Driven Modernization


LiveNation Interactive Seat Map

MIGRARIA

5

• Enterprise systems behind Web 1.0 layers

• Alternative interfaces are trendy

– Web 2.0 - RIA (web or desktop)

– Mobile (web or native)

eBay Desktop Adobe AIR

eBay app for iPad


MIGRARIA

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• current main forces


MIGRARIA

7


• Legacy Web Applications (LWAs)

– Web layers of enterprise applications

– Web Application Framework

• MVC pattern

• Technology heterogenity (deprecated versions)

– Lack of

• Up-to-date documentation

• Proper maintenance strategy

• No original developers

MIGRARIA

8



9

LWA RIA

LWA ConceptualModel

RIA Conceptual Model

model

codeT2M M2T

M2M

Modernization process framework- Model-driven approach

- Metamodels (DSL)- Transformations

- Architecture Driven Modernization



10


Server-side & Static Analysis

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• Main steps

– Text2model

– Information extraction & Representation


Text2Model

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JSP Strutstaglib

XMLStrutsConf

JavaStruts Action

XML

Struts-Java

JSP

M2M

Struts-JSP

Struts-ConfigXML

Java

JSP

StrutsConfig


• Struts tag libs

metamodel

– Taglibs: html, logic and

bean

– JSP metamodel

extension

– JSTL custom

extension

MoDisco Extension: Struts JSP

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• M2M transformation

MoDisco Extension: Struts JSP

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JSP Struts-JSP


• New MoDisco Discoverer

– Struts Configuration

– Metamodel

• XML metamodel extension

• Automatic generation via EMF Generator Model

– Derived from WebApp Discoverer

– Struts 1.X config support

• 1.0, 1.1, 1.2 and 1.3

MoDisco Extension: Struts config

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• New MoDisco Discoverer

MoDisco Extension: Struts config

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Information Extraction

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Struts

Struts-Java

Struts-JSP

Struts-Config

M2M


Struts Metamodel

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Agenda System

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Scattered information

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Navigation flows

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Struts model

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p01-p03 Nav Flow p03-p01-U Nav Flow


Manual vs Generated

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• Size of the case study

Concept Amount

JSP files (including error) 78

JSP LOCs 6727

Java files 140

Java LOCs 10282

Config LOCs 496


Manual vs Generated

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• Limitations

– Link request with n parameters

– Only html:link tags, no HTML <a>

– Duplicated forwards


• MIGRARIA project

– MD LWA2RIA modernization framework

• Work herein: MD Rev. Eng.

– Extraction of a conceptual navigational model

from a LWA

– Metamodels: intermediate and target

– Transformations

– Evaluation

Main contributions

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• Eliminating current limitations

– Refine and complete queries

– Refine and complete Struts Metamodel

• Define specific metrics for evaluation

• We need

– More case studies

– More MVC frameworks

MD Reverse Engineering

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Roberto Rodríguez Echeverría, José María Conejero, Pedro J. Clemente, Víctor M.

Pavón, Fernando Sánchez Figueroa

Questions?

Thanks for your [email protected]

@rrecheve

MigraRIA project overview (2012 mdwe )

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