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SALT – Service Architecture Leveraging Tuxedo
SCA client programming
The following steps are needed to build an SCA client:
1. Set up the client directory structure to define the physical representation of
an application; refer to the root.composite file.
2. Create the client application using a single API.
3. Compose the SCDL descriptor to create a link between the local and the
actual component.
4. Build the client executable using buildscaclient.
5. Execute the client while making sure that the APPDIR and SCA_COMPONENT
variables are set.
SCA component server programming
The following steps are required for developing an SCA component program:
1. Set up the component directory to define the physical representation of
the application.
2. Develop the component implementation.
3. Compose the SCDL descriptor to define the binding between actual
components and local implementation.
4. Compile and link the components using buildscacomponent.
5. Build the Tuxedo server host using buildscaserver.
SCA transactions
The ATMI binding schema supports SCA transaction policies by using the
/binding.atmi/@requires attribute and the three transaction values Not
Specified, suspendsTransaction, and PropagatesTransaction.
The various important areas in SCA programming that developers would be
interested in are Python and Ruby scripts and integration with Tuxedo SALT for
more development advantage; for example, no compilation, dynamic data typing,
and garbage collection. SALT provides a set of APIs to perform SCA calls from the
Python or Ruby client, and language extensions to call Python or Ruby components.
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