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Regex Filter

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*Purpose:* Matches string messages against a regular expression.

Minimum Configuration: The Pattern string for the match.

Discussion: The RegEx Filter applies a regular expression pattern, such as a pattern that includes wildcards or other character substitution symbols, to the message payload. The filter applies the toString() method to the payload to convert the payload to a String. To ensure that the payload is a String, you might want to apply a Payload Filter to the message with a nested And Logic Filter.

Mule ESB Reference

For more information about Regex Filter, see here.