hegde

Document Sample
hegde Powered By Docstoc
					    Context-Aware Collaboration in Web-Based Mobile Enterprise Applications
                                             Vinayak Hegde
                                     ABC Virtual Communications
                              Regency 1 Building, 1501 50th Street, Suite 200
                        West Des Moines, IA 50266 vhegde@abcv.com 515-309-6301
1    Abstract                                                 business process workflow with a pipeline structure
In the state of the art, mobile applications can be used to   consisting of lead generation, sales force automation,
access enterprise information only when there is network      order, processing, and fulfillment. Traditional service
connectivity. Very limited options are available to work      oriented business processes are labor-intensive as well as
offline when these mobile devices loose network               paper intensive as they involve interactions between
connection. In addition, there is no support for              enterprises, financial institutions, marketplaces, and
collaborative information sharing in mobile applications.     other service providers. We refer to the entire series of
We highlight the specific needs of mobile collaborations      commercial and business transactions, support functions
in service based industries where travelling is constant.     and processes in service oriented industries as Business
We share our experience in building a comprehensive           Services Value Chain (BSVC). Some of the Challenges
mortgage loan origination system, ECLoanPro, that             of BSVC include :
provides online-offfline team collaboration. We                    Distributed interactions between users in
highlight some of the features of the underlying Internet              different locations playing different roles in the
Application Framework. We also identify some of the                    enterprises, financial institutions, marketplaces,
key research directions and future enhancements                        and other service providers
necessary to support context-aware collaboration in                Having to establish trust between their
mobile enterprise applications.                                        interactions
                                                                   Managing control of the overall processes with
2    Introduction                                                      modified workflow
Business needs of mobile employees as well as business             Coordination of modularized tasks in business
partners are increasingly requiring support for mobile                 processes of various lines of businesses
computing.      Current    technology     can    support           Understanding communication needs to
personalization and role based secure access to                        facilitate collaboration in both enterprise
enterprise applications over the web to permit anywhere                applications      and      mobile      computing
and anytime mobile computing.                                          environments
                                                                   Creating a shared context and automated
Another growing need of Internet enabled enterprises is                synchronization and conflict resolution between
collaborative commerce, especially in a mobile setting of              multiple application repositories
service based industries, where service reprsentatives
and providers require constant travelling. Internet           Lack of contextual knowledge of constant update to
enables real-time collaboration with customers,               shared information from a group of people associated at
employees as well as external business partners.              any stage of the pipeline makes these already complex
Coordinated collaboration across departmental and             business processes almost unmanageable. For example,
corporate boundaries is essential for sustaining              front office applications can be closely tied to back-
competitive advantage and reducing business processing        office systems and what traditionally used to be a back
cycle times. Mobile Collaboration makes it possible to        office function such as underwriting in a service-oriented
streamline business processes to take advantage of            industry can be partially fulfilled by the front office
technology to automate traditionally manual processes.        applications if a collaborative environment is available.
As a result, large enterprises are challenged to
simultaneously provide a unified solution to support          Research is needed to specifically focus on the mobile
web-enabling enterprise integration, mobile applications,     collaboration needs of BSVC. ECLoanPro product from
and collaboration.                                            ABC Virtual (ABCV) delivers comprehensive solutions
                                                              to mortgage industry BSVC.
3    Context in Business Services Value Chain
Service-based industries such as Banking, Healthcare          4    ECLoan Pro – A Desktop Portal
and Insurance benefit from collaboration in mobile
environment. Most service oriented industries utilize a       ECLoanPro is a comprehensive Web-based mortgage



                                                                                                                       1
process automation system. ECLoanPro provides a               while it is disconnected from the enterprise server. When
unified desktop portal interacting with loosely coupled       a client PC is subsequently connected to the enterprise
enterprise services communicating over the Internet           server, all data is automatically and efficiently
using established standards and frameworks. ECLP              synchronized between client and server using secure
supports multiple users to share data, allows them to         Web-based protocols. Most of the capabilities of IAF-
make concurrent updates and efficiently communicates          based applications are available while working offline.
their updates to each other.
                                                              5.1.2    Team Collaboration
                                                              IAF supports collaboration between members in a team
                                                              of authorized users as well as multiple installations for a
                                                              given user. Security policies allow groups of people
                                                              with different roles, possibly from multiple
                                                              organizations, to work together, share information, and
                                                              collaborate towards a workflow needed for specific
                                                              service oriented business processes. Multiple members
                                                              of a team can share data using roles, permissions and
                                                              subscription. In order to share data, the roles of both
                                                              members must permit such data movement, the owner of
                                                              data must give permission to the subscriber, and further,
                                                              the subscriber must be subscribed to the owner. Once the
                                                              authorized subscription is setup, updates to data made in
                                                              disconnected mode are also synchronized automatically
                                                              without any user involvement.
      FIGURE 1. ECLoanPro System Architecture
                                                              5.1.3     Distributed Object Repository
ECLP allows multiple types of clients to co-exist with        In the IAF, objects exist in a virtual Distributed Object
exactly the same enterprise server side implementation.       Repository that can be accessed from client computers as
Various client deployment options include a desktop           well as from a centralized server. Modifications made on
application, a browser-based HTML interface, and an           one computer are made visible on all other computers
XML interface. (See Figure 1.) ECLoanPro uses IAF as          automatically without any explicit user interactions. The
the mobile team collaboration infrastructure.                 virtual repository is implemented by keeping copies of
                                                              the central data in local stores of clients, and
5    Technical Highlights Of IAF                              communicating changes between clients and server.
                                                              Thus, clients can access the data whether or not they are
IAF provides advanced enterprise architecture for             connected to the Internet.
mobile enterprise integration and collaboration.
Highlights of the creative approach of IAF include:           5.1.4    Application Controlled Replication
 Integrates Web-based technology with smart-client           IAF uses application controlled replication technology to
    desktop application for achieving a single server-        empower mobile applications to work in stand-alone
    side implementation that supports both browser-           mode when network connection is not available. Instead
    based access as well as desktop application with          of well known replicated database technology, IAF uses
    offline capability.                                       object level replication technique for synchronizing
 Uses multi-tiered service based architecture with           updates of only the data related to a given user from the
    logical layers for mobile and web integration,            enterprise repository, which contains the entire corporate
    business domain representation, business process          data possibly in multiple repositories.
    workflow, and application services integration.
IAF uses open standards based Application Server and          5.1.5     Shared Objects and Conflict Resolution
Java as the platform to integrate with enterprise systems     Applications using IAF are designed to enable multiple
and provides anytime and anywhere information access.         users to share objects, communicate and collaborate with
                                                              each other in both on-line and offline mode. However,
5.1.1    Connected/Dis-connected Operation                    multi-user, disconnected operation also introduces
The architecture of IAF utilizes a client application         additional complexity of multiple users independently
running on desktop/laptop PCs and a companion                 updating distributed replica. If more than one subscriber
enterprise system at a central location. Client application   has copies of the same object in their local data store,
in IAF provides the ability to work from a desktop PC         when any of them modifies the data, the modification



                                                                                                                       2
will eventually be communicated to the central store and     associated with the detail. The user can also configure
to every user that has a copy of the object. IAF provides    the system to obtain all details automatically by default.
coordination and conflict resolution mechanisms using
asynchronous synchronization model that provides a           Users have access to all summary information by default
range of conflict resolution policies: rules in business     as they are always brokered to all the subscribers, but
objects determine what concurrent changes do or do not       any other data not actually accessed by the user is never
conflict; developers have the flexibility to in specifying   transferred from the server. Thus, the data in the local
how the application’s data is synchronized, either using     data store is always a subset of data in the server and
optimistic locking or pessimistic merge policy.              only those details that the user has explicitly chosen to
                                                             access.
5.1.6    Distributed Object Implementation
Individual objects in IAF may consist of both data in        5.1.9    Web-Based Object Brokering
traditional databases as well as files used by enterprise    The Object Brokering System is a key technology
applications: IAF generates guaranteed unique object         component of IAF used for transporting object
ID’s both in the case of objects created in replicated       information between the replicated and the enterprise
client repositories in disconnected mode or on the           repositories. Changes made locally are brokered up to
enterprise repository.                                       the server and changes in shared data on the server
                                                             server since the remote application’s last synchronization
Applications using IAF create objects and place them in      are brokered down to their client application.
relationship with other existing objects. IAF identifies     All interactions between clients and a server are based
the collection of business objects from the domain object    on HTTP/HTTPS protocols and utilize a variation of
hierarchy associated with a unit of collaboration as         two-phase commit protocol to ensure reliable
“collaborative object group (COG)”. COG can consists         performance even in the event of client failures or loss of
of individual objects created either on the server or in     connectivity.
any of the distributed replicated repositories. IAF
provides infrastructure mechanisms to keep the               5.1.10 Messaging And Broadcast
collection of objects in a COG consistent in each of the     IAF allows messages to be broadcast to selected group
distributed replicated repositories. The data in the local   of users. Authorized users can originate messages and
data repository is eventually a subset of data on the        broadcast them. The message itself can either be data in
server and is determined based on the user profile of the    the database or documents on the file system. The
owner of a given installation. Apart from local replicas,    message notification can also be sent by broadcast via e-
IAF also generates a single comprehensive replicated         mail or e-fax. The notification content can be
COG across multiple distributed server repositories.         personalized based on predefined contexts.

IAF provides the location transparency of object creation    5.1.11 Software Distribution
and guarantees that the behavior of the COG is               IAF’s ability to associate data in database or files on file
consistent both when IAF application is executed using       system as an aggregated object collection offers a great
either local repository or the enterprise repository.        flexibility to distribute application data, documents, as
                                                             well as different versions of a software update. Software
5.1.7    Logical Publish and Subscribe                       updates for the desktop applications developed using
IAF provides logical publish and subscribe to determine      IAF is supported automatically in the object brokering
which data stored on the client repository and its update    over the Internet, removing the need to distribute
are pertinent to the authorized and subscribed clients. A    diskettes or CDs. Software update mechanism in IAF is
logical object can be mapped to a set of COG. Any            very sophisticated. It is capable of not only binary
update to individual objects contained in the COG and        updates to the application that it is a part of, but also can
any future addition and deletion of objects and relations    update object maps as well as handle version update of
to the COG are distributed automatically to every            messages in transit which are queued during any
subscribed user.                                             disconnected offline sessions.

5.1.8     Accessing Summaries and Details                    6    Future Directions and Conclusions
IAF allows categorizing domain objects in a COG as           Some of the areas of further research needed to better
summary objects and detail objects associated with the       understand     collaboration in context-aware mobile
summary objects. The objects of type details are             enterprise applications include: customization, process
transferred only when users of applications using IAF        automation, object-level version management, historical
attempt to access data that is not in the summary object     snapshot, and scalable deployment.



                                                                                                                        3
                                                             and provide acceptable response time over a slow mobile
Customization solutions address the challenges of            connection. Object-level Versioning and Historical
personalization based on context. Business processes can     Snapshot can be used to better manage conflict
be automated by integrating necessary infrastructure         resolution in distributed offline replica. Configurable
services such as web-based object repository and             deployment services are needed for robust tracking,
persistence, distributed object brokering, authentication,   notification, accounting and reporting of the transactions
business rules, workflow, cross-selling, messaging and       for multiple products, as well as for multiple clients.
data transformation. Individual services need be tailored    Scalability and Performance issues of mobile
to make each service reusable, modular, and scalable,        environment       needs     further     research     also.




                                                                                                                     4

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:4
posted:8/13/2012
language:
pages:4