Presentation on theme: "Business Object Component Design and Implementation IV: From Business Objects to Complex Adaptive Systems Organizers: Jeff Sutherland, IDX Systems Dilip."— Presentation transcript:
Business Object Component Design and Implementation IV: From Business Objects to Complex Adaptive Systems Organizers: Jeff Sutherland, IDX Systems Dilip Patel, South Bank University Joaquin Miller, MCI Systemhouse OOPSLA98 Workshop 8 http://jeffsutherland.org/oopsla98/
Important Announcements OOPSLA96 97 98 Proceedings available from Springer in early November –Contact firstname.lastname@example.org Call for papers for OOPSLA99 Business Object Component Design and Implementation V will go out immediately. – Focus will be on Business Components and Interoperability. http://jeffsutherland.org/oopsla98/
Agenda 1. BUSINESS OBJECTS From Business Objects toward Adaptive Agents by Pam Rostal, Compuware Professional Services The Business Component Approach by Peter Herzum and Oliver Sims, SSA Business Object Component Architectures: A Target Application Area for Complex Adaptive Systems Research by Jeff Sutherland, IDX Systems Corp. http://jeffsutherland.org/oopsla98/
Agenda 2. WORKFLOW Structuring Specification of Business Systems with UML (with an Emphasis on Workflow Management Systems) by Pavel Hruby, Navision Software, Denmark Building Workflow Business Objects by Marc-Thomas Schmidt, IBM Software Group http://jeffsutherland.org/oopsla98/
Agenda 3. MODELLING AND FRAMEWORK ISSUES Organization in a Chaotic World by Chris Marshall, SES Software Inc. Adaptive Framework for the REA Accounting Model by Hiroaki Nakamura and Ralph E. Johnson, University of Illinois at Urbana- Champaign Business Procedures are not Represented Adequately in Business Applications and Frameworks! by Hans Albrecht Schmid, FB Informatik and Fernando Simonazzi, LIFIA, UNLP, La Plata, Argentina A Business Object Framework Architecture by Hans Albrecht Schmid, FB Informatik, Matthias Riebisch, Deutsche Post AG, Torsten Heverhagen, Informatik, University Essen, Harald Liessmann, Wirtschaftsinformatik University "Ride The Mainstream!" with MACK Business Objects and Escape the Divine Programmer Syndrome by Christopher Spottiswoode, Metaset, South Africa http://jeffsutherland.org/oopsla98/
Agenda 4. The User Experience Business Object Transitioning by Lenny Estrin Working with Business Objects: A Case Study by W. Hordijk, S. Molterer, B. Paech, Ch. Salzmann, Institut für Informatik, Technische Universität München A Dynamic Business Object Architecture for Supporting Strategic Management Planning by Kitty Hung, Tony Simons, University of Sheffield http://jeffsutherland.org/oopsla98/
Business Object Component Architectures: A Target Application Area for Complex Adaptive Systems Research Jeff Sutherland IDX Systems Corporation OOPSLA98 Business Object Workshop IV
cas Frozen Chaos Fragmentation cas Self Organization C++ COBOL Smalltalk Java Unpartitioned Object Systems Components Business Objects Classes Procedures
cas - Complex Adaptive Systems Composed of interacting agents which respond to stimuli. Stimulus-response behavior can be defined in terms of rules. Agents adapt by changing their rules as experience accumulates. Agents can be aggregated into meta- agents whose behavior may be emergent.
Enterprise Software Systems are cas Business entities are often used as examples of complex adaptive systems. Modification time is on the order of months or years, roughly time to change software. Automating business processes renders parts of the business in software. A business system has a severely constrained rule set, making it an ideal test bed for cas concepts.
Hollands Key Concepts in cas Aggregation (property) Tagging (mechanism) Nonlinearity (property) Flows (property) Diversity (property) Internal models (mechanism) Building blocks (mechanism)
Aggregation Aggregation is a basic mechanism in object modeling Forming components out of objects is aggregation. More important are emergent properties Meta-agents (an enterprise) –aggregates of agents (enterprise systems) –emergent behaviors (revenue, profitability, and cash flow, the indices of value creation).
Tagging Facilitates the forming of aggregates XML, CORBA, COM+, EJB Facilitates selective mating, messaging. Firewalls use tagging to preserve boundaries between aggregates. Componentize object models. Enable filtering, specialization, and cooperation. Develop hierarchical aggregates that exhibit emergent behaviors (like an operating system).
Nonlinearity Catastrophic and chaotic behaviors like traffic flow on the Internet. Brownouts, system loadings, scalability effects are often nonlinear. Predator/prey interactions –Arrival, proliferation, and destruction of viruses on the Internet –Revenue prediction in an enterprise financial system –Rate of construction of software
Flows Workflows Tags condition flows Flows typically have a multiplier effect. –money injected into the economy –email or other message flows on a network. Recycling effect –individual pieces evolve, die, replaced, reused –living software is constantly changing due to flows, as rivers change their course. –dead software is eventually detritus that is expelled from the enterprise organism.
Diversity Persistence of an individual agent depends on the ecosystem of agents that surround it. Evolution of agents causes convergence of system architectures. Emergent patterns that reappear again and again in widely disparate environments. Usefulness in business object systems arises from interactions between diverse agents as in human societies.
Internal Models Utility of cas is enhanced if the system can learn from experience and adapt behavior. System must develop and act on internal models that simplify the external world. System infers results of actions before they are taken to choose actions that have productive results. Prospects for longevity of software systems depend on this capability, just as in living systems.
Building Blocks Reuse is dependent on building blocks. Basis of Moore's law in hardware production. Could be the basis of dramatic improvements in software productivity. Building blocks are the basis for generation of internal models and are essential to the construction of adaptive enterprise systems.
Company's "digital nervous system" will respond to planned and unplanned events. Requirements are: –object model convergence (across applications) –Internet integration (W3C Document Object Model) –data representation (W3C XML, XSL) –componentization (exposing internals, reuse) –enhanced user involvement (powerful scripting languages) Aggregation, tagging, nonlinearity?, flows?, diversity?, internal models, building blocks
Bottom Line BOCAs would benefit by application of cas concepts because they are larger in scope and broader in application than current work. Fundamental breakthroughs in how to build cas could translate directly to BOCAs. Business Object community could provide best testing ground for cas concepts, filling major deficiency in production systems. cas concepts provide criteria for analysis and evaluation of diverse BOCAs.