THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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This page is work in progress. Thanks for your contribution
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- Infrastructure for creating, wiring, deploying and managing service assemblies in single runtime or across runtimes (federated)
- Infrastructure for leveraging qualities of service provided by host environments (transactions, security)
- Support for different host environments: Standalone, Tomcat, J2EE, OSG OSGI (in progress, more can be added)
- plug-points for supporting variety of bindings such as Axis2, RMI, more can be added
- plug-points for adding component implementations such as Java Script, Spring, JRuby, Python (started), more can be added
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To understand how wiring works, we need to detail how Components function in the system. Let's start with Atomic Components and then discuss Composite Components.
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- The load phase processes SCDL and creates an in-memory model
- The build phase evaluates the model and produces corresponding runtime artifacts (e.g. components, services, references)
- The connect phase wires references to services
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Loader
SCA service assemblies are deployed to the SCA domain in the format of SCDL files. Tuscany runtime uses loader to load the SCDLs into model objects which are a set of java beans to hold the metadata.
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- Introspect Java annotations
- Uses a pluggable "annotation processing" framework to introspect Java classes
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Java SCA builder creates a runtime component from the configuration model
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