A Delta Oriented Approach to the Evolution and Reconciliation of

Enterprise Software Product Lines

Federal University of Rio Grande do Norte, Natal-RN, Brazil Department of Informatics and Applied Mathematics

Informatics Superintendence

Gleydson Lima, Jadson Santos, Uirá Kulesza, Daniel Alencar and Sergio Fialho

ICEIS 2013 - 15th International Conference on Enterprise Information Systems

Motivation

� Traditional SPL Development

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Motivation

� Traditional Development Scenario

Asset Inputs

Product Derivation

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Product 1

Product 2

Product 3

Product n

Configuration Knowledge

Variabilities

Motivation

� There are industrial scenarios where traditional SPL processes do not work! ◦ Distributed and separate development teams ◦ Great demand for changing

�  Several existing research works describe these alternative scenarios

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Motivation

� Alternative Development Scenario

SPL 1.1

Fork Partial Reconciliation

Source SPL

Target SPL

SPL 1.0 SPL 1.1

SPL 1.2 SPL 2.1

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Overlap !

SPL 1.5

Motivation

� Code conflicts when integrating features from SPLs that evolved independently

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Limitations of existing tools

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� Configuration Management Systems + Change Request Systems

Limitations of existing work

�  (Rubin et al, 2012) propose the improvement of the efficiency of forking practices, but they have not developed a concrete implementation

�  (Nunes et al, 2010) analyze the historical evolution by identifying how each feature has evolved, but they do not promote the merge of these evolutions

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Motivation Limitations of existing work Approach Overview Approach In Action Conclusions and Future Work

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Approach Overview

� The main aim of our approach is to promote the reconciliation of SPLs that are independently evolved from an initial version

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Approach Overview

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1.0 2.0 3.0

Change Log Change Log

1.0 1.5 2.3

Source SPL

Target SPL

Change Log Change Log

CMS + CRS

CMS + CRS

Delta Model

Conflict analysis

Approach Overview

� Provide a structured high level view of changes and conflicts to the user

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Motivation Limitations of existing work Approach Overview Approach In Action Conclusions and Future Work

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Approach In Action �  It calculates the dependencies between

classes implementing features in order to decide what merge strategy to adopt: ◦ Automatic ◦  Semi-automatic ◦ Manual

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Approach In Action � Case Study – SIGAA/UFRN ◦ The enterprise information system

responsible for the management of academic activities at the UFRN (1.000.000 loc)

◦ We evaluated a scenario of evolution in features from the SIGAA Library Management System Module (100.000 loc)

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Punishment

Approach In Action

Source SPL

Target SPL

�  SIGAA Library Management System Feature Model evolution

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SIGAA

Library

Suspension …

…

SIGAA

Library

Suspension …

…

Reservation

Suspension

SIGAA

Library

…

…

Suspension Fine

Punishment

SIGAA

Library

…

…

Suspension Fine

Reservation

Approach In Action

Domain Layer LibraryUser

GUI Layer RequestReservationMBean

Source SPL Target SPL

� Automatic Strategy

Not Changed

Changed

17 Suspension Reservation Punishment

Domain Layer LibraryUser

GUI Layer MaterialDetailsMBean

Approach In Action

GUI Layer MaterialDetailsMBean

Source SPL Target SPL

Persistence Layer LoanDAO

�  Semi-automatic Strategy

18 Suspension Reservation Punishment

Not Changed

Changed

Business Layer Business Layer

Approach In Action

Source SPL Target SPL

LoanProcessor

� Manual Strategy

19 Suspension Reservation Punishment

Not Changed

Changed

LoanProcessor

Motivation Limitations of existing work Approach Overview Approach In Action Conclusions and Future Work

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� We have generated an initial version of the tool and apply it at some isolated scenarios for validation

� We are refining the current implementation ◦ Mining feature evolution from CMS instead

source code annotation (less intrusive) ◦ Development a more complete study to

classify types of evolution and conflicts ... and quantify the efficiency of our approach

Conclusions and Future Work

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Thank You

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A Delta Oriented Approach to the Evolution and Reconciliation of

Enterprise Software Product Lines

Federal University of Rio Grande do Norte, Natal-RN, Brazil Department of Informatics and Applied Mathematics

Informatics Superintendence

Gleydson Lima, Jadson Santos, Uirá Kulesza, Daniel Alencar and Sergio Fialho

ICEIS 2013 - 15th International Conference on Enterprise Information Systems