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ARCHITECTURAL MISMATCH

ARCHITECTURAL MISMATCH. Heather T. Kowalski September 5, 2000. Article Details. “Architectural Mismatch: Why Reuse Is So Hard” By David Garlan, Robert Allen, & John Ockerbloom CMU Professor & Graduate Students IEEE Software, November 1995. Context. ABLE Project

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ARCHITECTURAL MISMATCH

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  1. ARCHITECTURAL MISMATCH Heather T. Kowalski September 5, 2000

  2. Article Details • “Architectural Mismatch: Why Reuse Is So Hard” • By David Garlan, Robert Allen, & John Ockerbloom • CMU Professor & Graduate Students • IEEE Software, November 1995

  3. Context • ABLE Project • Architecture-Based Languages & Environments • To develop “foundations for an engineering discipline for software architecture” • Aesop System • Tool designed to “experiment with architectural development environments”

  4. Aesop • Inputs of Style Description & Shared Infrastructure • Aesop’s black box Manipulation • Result: Custom Design Environment • www.cs.cmu.edu/afs/cs/project/able/www/aesop/aesop_home.html

  5. Software Architecture • Motivation • Depict a Complex System in Manageable Format • Identify & Exploit Recurring Elements

  6. Software Architecture, con’t • Research Areas • Architectural Description • Formal Underpinnings • Design Guidance • Domain Specific Architecture • Architecture in Context • Role of Tools & Environments

  7. Harsh Realities • Excessive Code • Poor Performance • Modify External Packages • Need to Reinvent Existing Functions • Unnecessarily Complicated Tools • Error-Prone Construction

  8. Conflicting Assumptions -- Taxonomy • Nature of Components • Nature of the Connectors • Global Architectural Structure • Construction Process

  9. Nature of Components • Infrastructure • Control Model • Data Model

  10. Nature of Connectors • Protocols • Event Broadcast • Request/Reply pair • Data Model • C Constructs & Arrays • ASCII Strings

  11. Global Architectural Structure • Role of Tools • Independent Tools • Concurrency = Conflict

  12. Construction Process • Existing Infrastructure • Application Code • Reuse/Integration Code • Code Generated by other Packages

  13. Future • Design of Components • Codify Notations, Mechanisms, and Tools • Steps: • Explicitly Document Architectural Assumptions • Orthogonal Subcomponents • Sources of Design Guidance • Techniques for Bridging Mismatches

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