Add a checksum

PLEASE NOTE: This documentation applies to an earlier version. For the most recent documentation, visit the Pentaho Enterprise Edition documentation site.

Description

This step calculates checksums for one or more fields in the input stream and adds this to the output as a new field.

Option	Description
Step name	Name of the step. *Note*: This name has to be unique in a single transformation.
Type	The type of checksum that needs to be calculated. These are the types that are available: CRC32 : 32-bit Cyclic Redundancy Check : http://en.wikipedia.org/wiki/Cyclic_redundancy_check ADLER 32 : Checksum algorithm by Mark Adler: http://en.wikipedia.org/wiki/Adler-32 MD5 : Message Digest algorithm 5 : http://en.wikipedia.org/wiki/MD5 SHA-1 : Secure Hash Algorithm 1 : http://en.wikipedia.org/wiki/SHA-1 SHA-256 : Secure Hash Algorithm 2 : http://en.wikipedia.org/wiki/SHA-256
Result Type	Some checksum types allow to set different result types: String, Hexadecimal and Binary
Result field	The name of the result field containing the checksum
Compatibility Mode	Check this to be compatible with transformations that were created with a PDI version before 4.2.0. Before 4.2.0 there have been issues with a wrong hexadecimal encoding when Result Type is set to Hexadecimal (see details in PDI-5190).
Fields used in the checksum	The names of the fields to include in the checksum calculation. Note: You can use the "Get Fields" button to insert all input fields from previous steps.

A simple CRC32 sample can be found in this folder of your Kettle distribution:

samples/transformations/Add a checksum - Basic CRC32 example.ktr