Time again to prostrate myself before you highly-esteemed fellow monks concerning a problem I've encountered with Object::InsideOut ... and more specifically, the type validation of fields therein.

If a field type validation is declared as follows: 

sub validate_max_size {
    my $val = shift;

    ! defined $val || $val > 0;
}
.
.
# Then later ...
.
my @data :Field :Type( \&package::validate_max_size );

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the following error is seen when OIO calls the sub with a value of undef (aka the constructor is called with type => undef) ... 
#   Failed test 'Valid max_size: undef'
#   at (eval 4) line 43.
# died: OIO::Code error: Problem with type check routine for initializ
+er 'max_size' for class 'IBM::Common::Collection
# Error: Argument "undef" isn't numeric in numeric gt (>)
# Package: main
# File: t/IBM-Common-Collection.t
# Line: 68

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The problem is that no error unsues from running similar code as a one-liner e.g. 
perl -Mstrict -we 'sub f {my $v = shift; ! defined $v || $v > 0}; f(un
+def)'

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Here's the rub: Has anybody else encountered (and hopefully, overcome) this problem ??

TIA ,

Update: Thanx, once again to ikegami who noticed a disparity between the use of or and ||. Having now tried all combinations of the 2 in the 2 circumstances, exasperatingly, the principle problem remains.

A user level that continues to overstate my experience :-))

In reply to Object::InsideOut field type validation by Bloodnok

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