PABRE System - Software Requirement Patterns

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Information about PABRE System - Software Requirement Patterns
Technology

Published on January 23, 2014

Author: gessiupc

Source: slideshare.net

Description

This presentation describes the PABRE tools for the USE, MANAGEMENT AND EVOLUTION OF SOFTWARE REQUIREMENT PATTERNS FOR REQUIREMENTS ENGINEERING ELICITATION.

PABRE framework: http://www.upc.edu/gessi/PABRE/

PABRE system: http://www.upc.edu/gessi/PABRE/Tools.html

Requirement Patterns

Req. Patterns: PABRE-Man & PABRE-Cft Outline • • • • Requirement Reuse Requirement Pattern Example PABRE Method Tools:  PABRE-Man: Requirement Pattern Management  PABRE-Proj: Project Management 2

Req. Patterns: PABRE-Man & PABRE-Cft REQUIREMENT REUSE 3

Req. Patterns: PABRE-Man & PABRE-Cft Requirement Reuse Your Context Common problem that occurs within the domain, and a suggested solution requirements in natural language Reusable Requirements Requirement Patterns (SRPs) Recognize which existing requirements apply to the patterns apply to the particular context Requirements Book PABRE Method ↓ global errors ↑quality of the individual requirements 4

Req. Patterns: PABRE-Man & PABRE-Cft SRP Example: Failure Alerts Pattern’s Goal: Having system that provides alerts when system failures occur. How do their requirements look like? The solution should alert of disks close to their capacity . alert In case of a network or server disk crash the solution should alert immediately. network or server disk crash, alert The system should alert the administrator of the resources (physical or logical) alert close to their capacity close to their capacity. Requirement template The system shall trigger alerts in case of failuresSet failures.  failuresSet : set of possibleFailures o possibleFailures: server crash | disk crash … 5

Req. Patterns: PABRE-Man & PABRE-Cft SRP Example: Failure Alerts Requirement Pattern Failure Alerts Goal: Satisfy the customer need of having a system that provides alerts when system failures occur. Template The system shall trigger an alert in case of failure. Extended Fixed Part multiplicity(Alerts Types) = 0..1 and Parts Constraint multiplicity(Failure Types) = 0..1 Requirement Extended Part Form Homogeneous Alert Types Failure Alerts Template The solution shall trigger %alertsSet% alerts in case of failure Metric Parameter alertsSet alertsSet: Set(AlertType) Fax | Sound …. AlertType: SMS | Mail | Template The system shall trigger alerts in case of %failuresSet% failures Metric Extended Part Parameter Failure Types failuresSet failuresSet: Set(FailureType) crash … FailureType: server crash | disk Template Fixed Part Requirement Form Heterogeneous Failure Alerts The system shall trigger different types of alerts depending on the type of failure. Extended Parts Constraint Multiplicity(Alerts for Failure Types) = 0..* The system shall trigger %alertsSet% alerts in case of %failuresSet% failures. Metric Parameter alertsSet: Set(AlertType) alertsSet AlertType: SMS | Mail | Fax | Sound …. failuresSet failuresSet: Set(FailureType) crash … FailureType: server crash | disk Template Extended Part Alerts for Failure Types 6

Req. Patterns: PABRE-Man & PABRE-Cft PABRE METHOD 7

Req. Patterns: PABRE-Man & PABRE-Cft PABRE Method: Overview (I) • PABRE: PAttern Based Requirements Elicitation • Method to use and update Req. Patterns • Goals:  Requirements Book Generation  Requirements elicitation phase easier: • ↓ time • ↓ errors ↓ cost 8

Req. Patterns: PABRE-Man & PABRE-Cft PABRE Method: Overview (II) Knowledge of the Reqt. pattern catalogue Needs IT Consultant Customer Supplier Supplier Supplier 6 Requirements Elicitation Patterns Exploration Forms Exploration Parts Exploration Requirem. Extraction Requirem. Creation Reqt. Patterns Catalogue Knowledge of previous projects Catalogue Evolution  Call for tenders OTS-based Solution Requirements Book Feedback Repository Requirements Expert 9

Req. Patterns: PABRE-Man & PABRE-Cft PABRE Method: Use Knowledge of the Reqt. pattern catalogue Needs IT Consultant Customer Supplier Supplier Supplier 6 Requirements Elicitation Patterns Exploration Forms Exploration Parts Exploration Requirem. Extraction Requirem. Creation Reqt. Patterns Catalogue Knowledge of previous projects Catalogue Evolution  Call for tenders OTS-based Solution Requirements Book Feedback Repository Requirements Expert 10

Req. Patterns: PABRE-Man & PABRE-Cft PABRE Method: With Tools 11

Req. Patterns: PABRE-Man & PABRE-Cft PABRE-Man 12

Req. Patterns: PABRE-Man & PABRE-Cft PABRE-Man: Main functionalities • SRP repository management  Classification Schemas  SRPs  Metrics • SRP repository exploration  Browsing SRP catalogue according to different classification schemas • SRP use  Statistics about the use of patterns with the aim to update the SRP catalogue • SRP catalogue exportation 13

Req. Patterns: PABRE-Man & PABRE-Cft PABRE-Man: Overview Selecting Classification Schema Browsing SRP Catalogue Browsing Metrics Creating a new SRP or Classifier (when U.Compliance selected) Information of the Selected Element (SRP) Information of the Selected Element (Domain Metric) 14

Req. Patterns: PABRE-Man & PABRE-Cft PABRE-Man: Editing a SRP (I) Tabs of the Selected Item in the Pattern Navigation Tree (SRP) Pattern Navigation Tree: Browsing Forms, Parts & Parameters of the SRP 15

Req. Patterns: PABRE-Man & PABRE-Cft PABRE-Man: Editing a SRP (II) Tab of the Selected Item in the Pattern Navigation Tree (Part) Requirement Text (with Parameters) Table of Parameters 16

Req. Patterns: PABRE-Man & PABRE-Cft PABRE-Proj 17

Req. Patterns: PABRE-Man & PABRE-Cft PABRE-Cft: Main Functionalities • Projects Repository Management  Projects  Project Requirements: • Created as an instance of a SRP • Created from scratch • Project and SRP Repository Browsing  Browsing of SRP Repository: • By priorization • By classification schema • Requirement Books Generation 18

Req. Patterns: PABRE-Man & PABRE-Cft PABRE-Proj: Overview Creating a new Project (when Alphabetical List selected) Options over a Project Information of the Selected Element (Project) 19

Req. Patterns: PABRE-Man & PABRE-Cft PABRE-Proj: Editing a project (I) Tabs of the Selected Item in the Project Navigation Tree (Project) Current Tab: Project’s General Information Browsing SRP Catalogue Project Navigation Tree: Browsing Project Requirements Information of the Selected Element (Part) 20

Req. Patterns: PABRE-Man & PABRE-Cft PABRE-Proj: Editing a project (II) Current Tab: Project Requirement Overview Creating Requirements (I) Creating Requirements (II) 21

Req. Patterns: PABRE-Man & PABRE-Cft PABRE-Proj: Editing a SRP requirement Tabs of the Selected Item in the Project Navigation Tree (Requirement that applies an SRP) Info of the applied SRP Requirement’s Text (with parameters) Giving value to a parameter (Set of Domain) 22

Req. Patterns: PABRE-Man & PABRE-Cft PABRE-Proj: Editing a new requirement Tabs of the Selected Item in the Project Navigation Tree (New Requirement) Requirement’s Question & Text completely free 23

Req. Patterns: PABRE-Man & PABRE-Cft PABRE-Proj: Prioritizing SRPs Prioritized List of SRPs Browsing SRP Catalogue Adding/Removing the Selected SRP to/from the Prioritized List Information of the Selected SRP Information of the Selected Element (SRP) 24

Req. Patterns: PABRE-Man & PABRE-Cft PABRE-Proj: Browsing SRP catalogue 2 Different Types of Browsing Creating a new associated requirement to this form Creating a new requirement applying this part Creating a new associated requirement to this SRP Window to Apply a Part Creating a new requirement in the classifier of this SRP Going to the next SRP in the prioritized list 25

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