An approach for Framework Construction and Instantiation Using Pattern Languages

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An approach for Framework Construction and
Instantiation Using Pattern Languages
ACIS International Conference on Computer
Science, Software Engineering, Information
Technology, e-Business, and Applications
(CSITeA02)

• Rosana Teresinha Vaccare Braga
• Paulo Cesar Masiero
• ICMC-USP Institute of Mathematical and Computer
  Sciences of the
• University of São Paulo
• São Carlos SP Brazil

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Contents

• 1- Introduction and motivation
• 2- Overview of the approach
• 3- Pattern Language Development
• 4- White-box Framework Development
• 5- Wizard development
• 6- Framework instantiation
• 7- Concluding remarks

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Contents

• 1- Introduction and motivation
• 2- Overview of the approach
• 3- Pattern Language Development
• 4- White-box Framework Development
• 5- Wizard development
• 6- Framework instantiation
• 7- Concluding remarks

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1 Introduction and Motivation

• Software Reuse
• Software Patterns capture experience acquired
  during software development, synthesizing it in a
  problem/solution pair.
• Pattern languages organization of the knowledge
  about a specific domain into specific patterns
  that can be systematically applied in the
  development of systems in the same domain.
• Frameworks set of abstract and concrete classes
  that can be customized to produce specific
  applications.
• Problem complexity to build and use frameworks

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1 Introduction and Motivation

• Relationship between frameworks and pattern
  languages
• Pattern languages can be used to
• document the framework
• Support the framework design and implementation
• Guide the transformation of the framework into a
  concrete application
• Our proposal
• an approach to develop a framework from a pattern
  language, and
• to use this pattern language to instantiate the
  framework to specific applications

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Contents

• 1- Introduction and motivation
• 2- Overview of the approach
• 3- Pattern Language Development
• 4- White-box Framework Development
• 5- Wizard development
• 6- Framework instantiation
• 7- Concluding remarks

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2 - Approach for Framework Construction and
Instantiation
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Contents

• 1- Introduction and motivation
• 2- Overview of the approach
• 3- Pattern Language Development
• 4- White-box Framework Development
• 5- Wizard development
• 6- Framework instantiation
• 7- Concluding remarks

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3 - Pattern Language Development

• Objective building a pattern language to capture
  the domain functionality and to guide the
  development of applications in the domain
• Based on practical experience in the domain,
  domain analysis, or reverse engineering of
  existing systems

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3 - Pattern Language Development

• Steps
• 1) Produce an analysis model of the domain
• 2) Define the patterns of the pattern language
• Look at recurring analysis patterns that are
  implicit in the model
• Look at other pattern languages for equivalent
  domains
• Try to isolate each pattern according to specific
  functions performed
• Try to create optional patterns when there are
  optional functions
• 3) Analyze interaction among patterns
• Illustrate this information with a diagram
• Do the cross-reference in the Following
  patterns section

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GRN A Pattern Language for Business Resource
Management
Identify the Resource (1)
Quantify the Resource (2)
Store the Resource (3)
Rent the Resource (4)
Trade the Resource (6)
Maintain theResource (9)
Quote the Trade (7)
Quote the Maintenance (10)
Reserve the Resource (5)
Check Resource Delivery (8)
Identify Maintenance Tasks (14)
Itemize the Resource Transaction (11)
Pay for the Resource Transaction (12)
Identify Maintenance Parts (15)
Identify the Resource Executor (13)
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Contents

• 1- Introduction and motivation
• 2- Overview of the approach
• 3- Pattern Language Development
• 4- White-box Framework Development
• 5- Wizard development
• 6- Framework instantiation
• 7- Concluding remarks

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4 - White-box Framework Development

• Objective building a set of classes to support
  the development of applications in the same
  domain of the pattern language
• The classes belonging to patterns of the pattern
  language have the corresponding implementation in
  the framework

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4 - White-box Framework Development

• Steps
• 1) Identify the framework hot-spots, using the
  pattern language.
• 2) Design the framework, based on the list of hot
  spots and on the pattern language.
• 3) Implement the framework
• 4) Document the mapping between the pattern
  language and the framework, to ease future
  instantiation

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Example of GREN classes
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Contents

• 1- Introduction and motivation
• 2- Overview of the approach
• 3- Pattern Language Development
• 4- White-box Framework Development
• 5- Wizard development
• 6- Framework instantiation
• 7- Concluding remarks

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5 Wizard Development

• Objective creating a tool with a graphical user
  interface that follows the pattern language
  concepts
• Specific applications can be implemented by
  following the wizard instructions, i.e., the
  pattern language is interactively applied by
  filling in the wizard screens

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5 Wizard Development

• Data about the patterns, variants, classes, etc.
  can be stored in a meta-database and retrieved by
  the wizard
• Information filled in by the user is also stored
  in a database.
• Automatic adaptation of the framework to the
  specific application

Example of GREN-Wizard screen
Example of GREN-Wizard report
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Contents

• 1- Introduction and motivation
• 2- Overview of the approach
• 3- Pattern Language Development
• 4- White-box Framework Development
• 5- Wizard development
• 6- Framework instantiation
• 7- Concluding remarks

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6 Framework Instantiation

• Objective Adapt the framework to specific
  applications, obtaining an executable code
• Types of instantiation
• Using the white-box version of the framework
• Using the wizard

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6 Framework Instantiation

• Instantiation using the white-box version of the
  framework
• Pattern language usage to obtain the analysis
  model of the application to instantiate
• Mapping from the analysis model to the framework
  classes
• Implementation of the application
• Validation of the application

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6 Framework Instantiation

• Instantiation using the wizard
• Pattern language usage to obtain the analysis
  model of the application to instantiate
• Usage of the Wizard to fill in the patterns
  applied and respective roles played by each class
  in each pattern
• Implementation of the application (done by the
  wizard)
• Validation of the application

Example of application generated using GREN-Wizard
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Contents

• 1- Introduction and motivation
• 2- Overview of the approach
• 3- Pattern Language Development
• 4- White-box Framework Development
• 5- Wizard development
• 6- Framework instantiation
• 7- Concluding remarks

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7 - Concluding Remarks

• The approach here proposed intends to promote
  software reuse, allowing developers to better
  understand and use frameworks
• Instantiation is eased because
• The framework architecture is related to the
  patterns of the pattern language
• No technical knowledge about the framework
  implementation details is necessary to derive new
  applications from it.

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7 - Concluding Remarks

• Not all types of pattern languages could help
  framework construction and instantiation.
• Candidate pattern languages
• those that concern problems to be solved during
  analysis of systems in the domain
• Information systems are an example of a domain
  that is suitable for this approach.

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Concluding Remarks (continued)

• During the framework usage in the development of
  specific applications and because of the
  application domain evolution, new hot spots may
  be necessary.
• In this case, the pattern language must also be
  updated, including new patterns or changing
  existing ones.

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Contact

• Rosana rtvb_at_icmc.sc.usp.br
• Paulo masiero_at_icmc.sc.usp.br
• LABES (Software Engineering Lab at ICMC-USP)
  http//nt-labes.icmc.sc.usp.br (in Portuguese
  only)
• My WEB page www.icmc.sc.usp.br/rtvb/ingles.html

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An approach for Framework Construction and
Instantiation Using Pattern Languages
ACIS International Conference on Computer
Science, Software Engineering, Information
Technology, e-Business, and Applications
(CSITeA02)

• Rosana Teresinha Vaccare Braga
• Paulo Cesar Masiero
• ICMC-USP Institute of Mathematical and Computer
  Sciences of the
• University of São Paulo
• São Carlos SP Brazil

29
(No Transcript)
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Example of Hot Spots table
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GREN Wizard A Tool to Automate GREN Instantiation
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Example of a report generated by GREN-Wizard
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Example of an application generated by the
GREN-Wizard
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Example of an application generated by the
GREN-Wizard
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Example of an application generated by the
GREN-Wizard
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Example of an application generated by the
GREN-Wizard