You can define your own extension functions to use in transformation services. After you define a class or set of classes containing the extension functions, you build a JAR file containing these classes and add it to Sybase WorkSpace. This JAR file can be located anywhere on the file system.
To write a user-defined extension class:
Create a new public Java class in the project.
Create public static methods in the new Java class.
Write implementations for the newly-created methods.
Build a JAR file for your project.
Next: Adding User-Defined Extension Function JARs
Developing Custom Classes for Transforming Message Definition Fields
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