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Master SOA Design
Pattern Catalog
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Process Abstraction (Erl)
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Home > Logical Inventory Layer Patterns > Process Abstraction
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How can non-agnostic process logic be separated and governed
independently?
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Problem
Grouping task-centric logic together with task-agnostic logic
hinders the governance
of the task-specific logic and the reuse of
the agnostic logic.
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Solution
A dedicated parent business process service layer is established
to support governance independence and the positioning of task
services as potential
enterprise resources.
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Application
Business process logic is typically filtered out after utility and
entity services have been defined, allowing for the definition of
task services that comprise this layer.
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Impacts
In addition to the modeling and design considerations
associated with creating task services, abstracting parent
business process logic establishes an inherent dependency on
carrying out
that logic via the composition of other services.
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Solution logic limited to the fulfillment of parent business processes is abstracted into
separate task services. This establishes a parent task service layer that abstracts nonagnostic
business process logic responsible for composing agnostic services.
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Related Patterns in Other Catalogs
Whole-Part (Buschmann, Henney, Schmidt, Meunier, Rohnert, Sommerland, Stal)
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This page contains excerpts from:
SOA Design Patterns by Thomas Erl
Foreword by Grady Booch
With contributions from David Chappell, Jason Hogg, Anish Karmarkar, Mark Little, David Orchard, Satadru Roy,
Thomas Rischbeck, Arnaud Simon, Clemens Utschig, Dennis Wisnosky, and others.
(ISBN: 0136135161, Hardcover, Full-Color, 400+ Illustrations, 865 pages)
For more information about this book, visit www.soabooks.com.
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