Designing and Implementing Composite Applications : webMethods Application Platform User’s Guide : Developing with Application Platform in Designer : About Managing Project Dependencies : Bundle Publisher View : Bundle Publisher Dependency Graphs : Examples of Dependency Validation
Examples of Dependency Validation
The following examples describe cases, in which dependency validation is useful:
*Publishing a Bundle with Missing Dependency. Assume that you have the following bundles in the Bundle Publisher view: MyProject-A and MyProject-B. Neither of the bundles has been published to the server. MyProject-B has a dependency on MyProject-A and MyProject-A has a dependency on a package (com.softwareag.demo.c). The package is not exported by the project, nor by any bundle on the server. This represents a missing dependency. Attempts to publish MyProject-A will fail with an error message, because the package import is required.
Imports Package
Exports Package
MyProject A
com.softwareag.demo.c
com.softwareag.demo.a
MyProject B
com.softwareag.demo.a
com.softwareag.demo.b
*Removing a Bundle that Provides a Dependency. Assume that you have the following bundles in the Bundle Publisher view: MyProject-A and MyProject-B. MyProject-B has a dependency on MyProject-A and both bundles are published to the server.
Imports Package
Exports Package
MyProject A
com.softwareag.demo.a
MyProject B
com.softwareag.demo.a
com.softwareag.demo.b
If you clear MyProject-A for unpublishing from the server and perform validation, you will see a warning message. The warning states that the bundle you are attempting to remove has a dependency on MyProject-B.
*Circular Dependencies. Assume that you have the following bundles in the Bundle Publisher view: MyProject-A, MyProject-B, and MyProject-C. None of the bundles has been published to the server. MyProject-A has a dependency on MyProject-B and MyProject-B has a dependency on MyProject-C. MyProject-C has a dependency on MyProject-A. This represents a circular dependency. Attempts to publish these bundles will fail. If you select the bundles and perform validation, you will see a warning message, describing the following circular dependency: MyProject-C has a dependency on MyProject-B, which depends on MyProject-A, and MyProject-A depends on MyProject-B.
Imports Package
Exports Package
MyProject A
com.softwareag.demo.b
com.softwareag.demo.a
MyProject B
com.softwareag.demo.c
com.softwareag.demo.b
MyProject C
com.softwareag.demo.a
com.softwareag.demo.c
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