@ Override public String initValues ( final FieldCase ca ) { boolean found = false ; buffer . setLength ( 0 ) ; for ( Constraint c : constraints ) { String cV = c . initValues ( ca ) ; if ( cV != null ) { found = true ; buffer . append ( cV ) ; } } if ( found ) { return buffer . toString ( ) ; } return null ; }
Initializes all sub - constraints . Returns a character string composed of all character strings of the constraints contained in it . If all sub - constraints return null null is returned .