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Server Administrator's Guide
Using the Archiver : Data handlers : Data handlers dependency
 

Data handlers dependency

You need to follow the restrictions given below for the combinations of different types of handlers.
*Data Extractor is mandatory handler for the archiver.
*Data Extractor cannot be the only Handler. You must specify another handler, which may be a purger or file-writer, to process the extracted data.
*Data Extractor should always be the first Handler and Data Purger should always be the last Handler.
*If FileWriter Handler is defined, then the extractor should be ProcessDataExtractor.
*If Purger Handler is defined, then the extractor should be ProcessDataIdExtractor.
* Data handler attributes