Java or CTL
Transformations can be written in Java or CloverDX transformation language (CTL):
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Java can be used in all components.
Transformations executed in Java are faster than those written in CTL. Transformation can always be written in Java.
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CTL cannot be used in JMSReader, and JMSWriter.
Nevertheless, CTL is a very simple scripting language that can be used in most of the transforming components. CTL can be used even without any prior knowledge of Java.