It is important to understand that the scripting engine is integrated directly into the ETL engine so that it has access to all the ETL classes within the Etlworks Java API, as well as core Java packages and classes, including collection-based APIs, utilities, etc.
The scripts must be written using the JavaScript language. However, you can also use Java classes and methods. It almost feels like you are using Java, except for Java-specific language constructs. The best part is that you can combine and chain JavaScript and Java functions in one line of code:
var val = value.toLowerCase().trim().replaceAll('|', '');
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