Database Reference
In-Depth Information
once again try to establish a communication with all its endpoints and at-
tempt to start gracefully. This is often the first attempt done by the adminis-
trator.
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You can also altogether avoid the composite going into a retired state in the
first place by using abstract WSDLs of all external services. When you use
an abstract WSDL, the engine treats it as local and keeps the composite act-
ive. The concrete WSDL can be copied to a shared MDS location and in turn
be referred from the abstract WSDL. This must be done at design time by
the developer.
To briefly understand the difference between concrete and abstract WSDLs,
click on the icon on the composite dashboard of the referenced composite
service. This opens a popup showing the concrete WSDL.
If you click on the concrete WSDL, a new browser window opens displaying
its contents. In it, you can obtain the abstract WSDL as shown in the following
screenshot:
