A constraint that restricts the value of a stepfield to be in a specified list of values.
This corresponds to the use of "in (...)" in SQL SELECT-syntax.
author: Rob van Maris version: $Id: FieldValueInConstraint.java,v 1.7 2007/02/11 19:21:12 nklasens Exp $ since: MMBase-1.7
Returns a string representation of this FieldValueInConstraint.
The string representation has the form
"FieldValueInConstraint(inverse:<:inverse>, field:<field>,
casesensitive:<casesensitive>, values:<values>)"
where