Types::XSD::Lite - type constraints based on a subset of XML schema datatypes
package Person; use Moo; use Types::XSD::Lite qw( PositiveInteger String ); has name => (is => "ro", isa => String[ minLength => 1 ]); has age => (is => "ro", isa => PositiveInteger);
These are all the type constraints from XML Schema that could be implemented without introducing extra runtime dependencies (above Type::Tiny). That's basically all of the XSD types, except datetime-related ones, and XML-specific ones (QNames, IDRefs, etc).
If you want the full set of XML Schema types, see Types::XSD.
I've added some quick explanations of what each type is, but for details, see the XML Schema specification.
AnyType
As per Any from Types::Standard.
Any
AnySimpleType
As per Value from Types::Standard.
Value
String
As per Str from Types::Standard.
Str
NormalizedString
A string containing no line breaks, carriage returns or tabs.
Token
Like NormalizedString, but also no leading or trailing space, and no doubled spaces (i.e. not /\s{2,}/).
/\s{2,}/
Language
An RFC 3066 language code.
Boolean
Allows "true", "false", "1" and "0" (case-insensitively).
"true"
"false"
"1"
"0"
Gotcha: The string "false" evaluates to true in Perl. You probably want to use Bool from Types::Standard instead.
Bool
Base64Binary
Strings which are valid Base64 data. Allows whitespace.
Gotcha: If you parameterize this with length, maxLength or minLength, it is the length of the decoded string which will be checked.
length
maxLength
minLength
HexBinary
Strings which are valid hexadecimal data. Disallows whitespace; disallows leading 0x.
0x
Float
As per Num from Types::Standard.
Num
Double
AnyURI
Any absolute or relative URI. Effectively, any string at all!
Decimal
Numbers possibly including a decimal point, but not allowing exponential notation (e.g. "3.14e-3").
"3.14e-3"
Integer
As per Int from Types::Standard.
Int
NonPositiveInteger
An Integer 0 or below.
NegativeInteger
An Integer -1 or below.
Long
An Integer between -9223372036854775808 and 9223372036854775807 (inclusive).
An Integer between -2147483648 and 2147483647 (inclusive).
Short
An Integer between -32768 and 32767 (inclusive).
Byte
An Integer between -128 and 127 (inclusive).
NonNegativeInteger
An Integer 0 or above.
PositiveInteger
An Integer 1 or above.
UnsignedLong
A NonNegativeInteger between 0 and 18446744073709551615 (inclusive).
UnsignedInt
A NonNegativeInteger between 0 and 4294967295 (inclusive).
UnsignedShort
A NonNegativeInteger between 0 and 65535 (inclusive).
UnsignedByte
A NonNegativeInteger between 0 and 255 (inclusive).
Datatypes can be parameterized using the facets defined by XML Schema. For example:
use Types::XSD::Lite qw( String Decimal PositiveInteger Token ); my @sizes = qw( XS S M L XL XXL ); has name => (is => "ro", isa => String[ minLength => 1 ]); has price => (is => "ro", isa => Decimal[ fractionDigits => 2 ]); has rating => (is => "ro", isa => PositiveInteger[ maxInclusive => 5 ]); has size => (is => "ro", isa => Token[ enumeration => \@sizes ]);
The following facets exist, but not all facets are supported for all datatypes. (The module will croak if you try to use an unsupported facet.)
enumeration
An arrayref of allowable values. You should probably use Type::Tiny::Enum instead.
pattern
A regular expression that the value is expected to conform to. Use a normal Perl quoted regexp:
Token[ pattern => qr{^[a-z]+$} ]
whiteSpace
The whiteSpace facet is ignored as I'm not entirely sure what it should do. It perhaps makes sense for coercions, but this module doesn't define any coercions.
assertions
An arrayref of arbitrary additional restrictions, expressed as strings of Perl code or coderefs operating on $_.
$_
For example:
Integer[ assertions => [ '$_ % 3 == 0', # multiple of three, and... sub { is_nice($_) }, # is nice (whatever that means) ], ],
Strings of Perl code will result in faster-running type constraints.
Restrict the length of a value. For example Integer[length=>2] allows 10, 99 and -1, but not 100, 9 or -10.
Integer[length=>2]
10
99
-1
100
9
-10
Types::XSD::Lite won't prevent you from making ridiculous constraints such as String[ maxLength => 1, minLength => 2 ].
String[ maxLength => 1, minLength => 2 ]
Note that on HexBinary and Base64Binary types, the lengths apply to the decoded string. Length restrictions are silently ignored for QName and Notation because the W3C doesn't think you should care what length these datatypes are.
QName
Notation
maxInclusive
minInclusive
maxExclusive
minExclusive
Supported for numeric types and datetime/duration-related types.
Note that to be super-correct, the {max,min}{Inclusive,Exclusive} facets for numeric types are performed by passing the numbers through Math::BigInt or Math::BigFloat, so may be a little slow.
{max,min}{Inclusive,Exclusive}
totalDigits
For a decimal (or type derived from decimals) specifies that the total number of digits for the value must be at most this number. Given Decimal[ totalDigits => 3 ], 1.23, 12.3, 123, 1.2 and 1 are all allowable; 1.234 is not. 1.230 is also not, but this may change in a future version.
Decimal[ totalDigits => 3 ]
1.23
12.3
123
1.2
1
1.234
1.230
fractionDigits
Like totalDigits but ignores digits before the decimal point.
This distribution has virtually no test suite, in the hope that Types::XSD's test suite will shake out any bugs in this module.
Please report any bugs to http://rt.cpan.org/Dist/Display.html?Queue=Types-XSD-Lite.
Type::Tiny, Types::Standard, Types::XSD.
http://www.w3.org/TR/xmlschema-2/ Datatypes in XML Schema 1.0
http://www.w3.org/TR/xmlschema11-2/ Datatypes in XML Schema 1.1
Toby Inkster <tobyink@cpan.org>.
This software is copyright (c) 2013-2014 by Toby Inkster.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
To install Types::XSD::Lite, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Types::XSD::Lite
CPAN shell
perl -MCPAN -e shell install Types::XSD::Lite
For more information on module installation, please visit the detailed CPAN module installation guide.