Apache Tuscany

Welcome to Apache Tuscany. The Apache Tuscany project is currently in incubation within the Apache Incubator.

The Apache Tuscany project simplifies the development of business solutions that use a service-oriented architecture. It allows new solutions to be constructed by combining new or existing services within an easy to configure service oriented run time with little or no programming. It does this by providing implementations for the Service Component Architecture (SCA) and Service Data Object (SDO) and providing Data Access Service that supports SDO. Tuscany integrates with well established Web Services and server technologies such as Apache Axis2, Apache Tomcat and Geronimo. Specifications for SDO and SCA can be found on the Documentation page

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 Java^tm, 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.

For more information about SCA read the white paper Service Component Architecture-Building Systems using a Service Oriented Architecure on the Documentation page. The Tuscany project provides runtime implementation of SCA in both Java and C++.

SDO enables developers to focus on data processing rather than the specific nature of data retrieval mechanisms as data arrives at and is dispatch from a service. SDO provides a consistent mechanism for describing and manipulating data regardless of data resource target or source types and the environment in which the data is to be processed. It maintains a change history for data as well as ensuring referential integrity based on a defined schema. To further understand the benefits of SDO please refer to the "Next Generation Data Programming: Service Data Objects"on the Documentation page. Tuscany implements SDO in Java and C++. A PHP implementation of SDO is also available under .

RDB DAS provides a generic data access service that provides transformation capability between SDO data graphs and relational databases and vise versa. To further explore the benefits of DAS please refer to white paper "DAS White Paper: The Data Access Service" on the Documentation page.

You can get a feel for what it's like to create simple applications using Tuscany by trying out the sample programs that are supplied with the Tuscany project. For Java look at the Installation instructions for Java Projects page and then follow the Samples README. For C++ go to the Installation Instructions for C++ Projects page.

The specifications for SDO and SCA can be found on the Documentation page:

The SCA 0.9 Assembly Model specification
The SCA 0.9 Client and Implementation Model specifications - for Java and for C++
The SDO 2.01 specifications - for Java and for C++

Tuscany is very interested in getting your comments or any feedback that you may have. Please feel free to post these on the mailing lists. Mailing list information is available in the Project Mailing Lists section. We look forward to your involvement in Tuscany.