SCA Overview - sandbox (TUSCANY) edited by haleh mahbod
Page:
http://cwiki.apache.org/confluence/display/TUSCANY/SCA+Overview+-+sandbox
Changes:
http://cwiki.apache.org/confluence/pages/diffpagesbyversion.action?pageId=47507&originalVersion=5&revisedVersion=6
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SCA provides developers with a simple, business-oriented, model for creating
systems based on a service oriented architecture. It manages infrastructure
complexities such as transactions, security and reliable messaging and frees
the developer to focus on providing business function. The solutions developed
using SCA can be changed declaratively to alter infrastructure capabilities or
application configuration properties to meet changing business requirements.
For example, infrastructure capabilities such as security policies may change
from one environment to another and can be changed without the need for
re-implementation. Application configuration may also be changed in this way,
for example, the currency quoted by a stock quote feed may be changed though
the SCA configuration mechanism.
SCA divides up the steps in building a service-oriented application into two
major parts:
* The Implementation of components which provide services and consume other
services. SCA supports service implementations written using any one of many
programming languages, both including conventional object-oriented and
procedural languages such as Javatm, PHP, C ++. XML-centric languages such as
BPEL and XSLT, and also declarative languages such as SQL and XQuery. SCA also
supports a range of programming styles, including asynchronous and
message-oriented styles, in addition to the synchronous call-and-return style.
* The Assembly of sets of components to build composite business applications
that addresses specific business requirements. This is performed by wiring
together the service implementation components.
Tuscany implements SCA in Java and C++. For more information about each
implementation or to get involved please refer to the following links.
[SCA Java|http://cwiki.apache.org/confluence/display/TUSCANY/Sandbox+SCA+Java]
<link to C++ SCA>
A PHP implementation for SCA is also available at <link for PECL>.
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