Andy LoPresto created NIFI-6782:
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Summary: Create EL function for repeating a string
Key: NIFI-6782
URL: https://issues.apache.org/jira/browse/NIFI-6782
Project: Apache NiFi
Issue Type: New Feature
Components: Extensions
Affects Versions: 1.9.2
Reporter: Andy LoPresto
Assignee: Matt Burgess
As per a discussion with [~mattyb149], an Expression Language function which
allowed for a number of repetitions of a string would be useful for generating
arbitrary random text in a {{GenerateFlowFile}} processor. The usage would be:
{code}
${"some string here":repeat(4)} # repeats the literal string 4 times
${literal("this_is_also_an_attribute_name"):repeat(3)} # repeats the literal
string 3 times
${my_string_attr:repeat(5)} # repeats the value in the attribute 5 times
${"explicit string":repeat(random():mod(10):plus(1))} # repeats the string
between 1 and 10 times
{code}
If it's easy to implement, I think a multiple parameter option would also be
convenient, but it is not a requirement:
{code}
${"explicit string":repeat(random():mod(10):plus(1))} # repeats the string
between 1 and 10 times
${"explicit string":repeat(1, 10)} # identical behavior to above
{code}
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