assertConstraintValue( constr );
if ( isConstraintComplete( constr ) ) {
if ( constr instanceof SingleFieldConstraintEBLeftSide ) {
final SingleFieldConstraintEBLeftSide sfcexp = ( (SingleFieldConstraintEBLeftSide) constr );
final ToStringExpressionVisitor visitor = new ToStringExpressionVisitor( sfcexp.getExpressionLeftSide().getBinding(),
constraintValueBuilder );
buf.append( sfcexp.getExpressionLeftSide().getText( visitor ) );
} else {
SingleFieldConstraint parent = (SingleFieldConstraint) constr.getParent();
StringBuilder parentBuf = new StringBuilder();