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XML::Compile::Schema::BuiltInTypes(3) |
User Contributed Perl Documentation |
XML::Compile::Schema::BuiltInTypes(3) |
XML::Compile::Schema::BuiltInTypes - Define handling of built-in data-types
XML::Compile::Schema::BuiltInTypes
is a Exporter
# Not for end-users
use XML::Compile::Schema::BuiltInTypes qw/%builtin_types/;
Different schema specifications specify different available types, but there is
a lot over overlap. The XML::Compile::Schema::Specs module defines the
availability, but here the types are implemented.
This implementation certainly does not try to be minimal in size:
following the letter of the restriction rules and inheritance structure
defined by the W3C schema specification would be too slow.
- builtin_type_info($type)
- Returns the configuration for $type, which is a
HASH. Be aware that the information in this HASH will change over time
without too much notice. Implement regression-tests in this if you use
it!
The functions named in this section are all used at compile-time by the
translator. At that moment, they will be placed in the kind-of opcode tree
which will process the data at run-time. You cannot call these
functions yourself.
XML::Compile will automatically format the value for you. For
instance, a float supplied to a field defined as type Integer will be
converted to an integer. Data supplied to a field of type base64Binary will
be encoded as Base64 for you: you shouldn't do the conversion yourself,
you'll get double encoding!
Any
- anyAtomicType()
- anySimpleType()
- anyType()
- Both any*Type built-ins can contain any kind of data. Perl decides how to
represent the passed values.
- error()
Ungrouped types
- boolean()
- Contains "true",
"false", 1 (is
true), or 0 (is false). When the writer sees a
value equal to 'true' or 'false', those are used. Otherwise, the trueth
value is evaluated into '0' or '1'.
The reader will return '0' (also when the XML contains the
string 'false', to simplify the Perl code) or '1'.
- pattern()
Big Integers
Schema's define integer types which are derived from the
"decimal" type. These values can grow
enormously large, and therefore can only be handled correctly using
Math::BigInt. When the translator is built with the
"sloppy_integers" option, this will
simplify (speed-up) the produced code considerably: all integers then shall
be between -2G and +2G.
- integer()
- An integer with an undertermined (but possibly large) number of
digits.
- long()
- A little bit shorter than an integer, but still up-to 19 digits.
- negativeInteger()
- nonNegativeInteger()
- nonPositiveInteger()
- positiveInteger()
- unsignedInt()
- Just too long to fit in Perl's ints.
- unsignedLong()
- Value up-to 20 digits.
Integers
- byte()
- Signed 8-bits value.
- int()
- short()
- Signed 16-bits value.
- unsignedByte()
- Unsigned 8-bits value.
- unsignedShort()
- unsigned 16-bits value.
Floating-point
- decimal()
- Decimals are painful: they can be very large, much larger than Perl's
internal floats. Therefore, we need to use Math::BigFloat which are slow
but nearly seamlessly invisible in the application.
- double()
- A floating-point value "m x 2**e", where m is an integer whose
absolute value is less than 253, and e is an integer between −1074
and 971, inclusive.
The implementation does not limited the double in size, but
maps it onto an precisionDecimal (Math::BigFloat) unless
"sloppy_float" is set.
- float()
- A small floating-point value "m x 2**e" where m is an integer
whose absolute value is less than 224, and e is an integer between
−149 and 104, inclusive.
The implementation does not limited the float in size, but
maps it onto an precisionDecimal (Math::BigFloat) unless
"sloppy_float" is set.
- precisionDecimal()
- Floating point value that closely corresponds to the floating-point
decimal datatypes described by IEEE/ANSI-754.
Encoding
- base64Binary()
- In the hash, it will be kept as binary data. In XML, it will be base64
encoded.
- hexBinary()
- In the hash, it will be kept as binary data. In XML, it will be hex
encoded, two hex digits per byte.
Dates
- date()
- A day, represented in localtime as
"YYYY-MM-DD" or
"YYYY-MM-DD[-+]HH:mm". When a decimal
value is passed, it is interpreted as
"time" value in UTC, and will be
formatted as required. When reading, the date string will not be
parsed.
- dateTime()
- A moment, represented as "date T time tz?", where date is
"YYYY-MM-DD", time is
"HH:MM:SS", and the time-zone tz is
either "-HH:mm",
"+HH:mm", or
"Z" for UTC. The time-zone is optional,
but can better be used because the default is not defined in the standard.
For that reason, the "dateTimeStamp" got
introduced, which requires the timezone.
When a decimal value is passed, it is interpreted as
"time" value in UTC, and will be
formatted as required. This will not work when the dateTime extended
type has facet
"explicitTimeZome="prohibited"".
When reading, the date string will not be parsed. Parsing
timestamps is quite expensive, therefore not preformed automatically.
You may try Time::Local in combination with Date::Parse, or
Time::Piece::ISO. Be very careful with the timezone settings in your
program, which effects "mktime" which
is used by these implementations. Best to run your application in
GMT/UTC/UCT/Z.
- dateTimeStamp()
- Like "dateTime", but with required
timezone which means that it is better defined. All other handling is the
same.
- gDay()
- Format "---12" or
"---12+09:00" (12 days, optional
time-zone)
- gMonth()
- Format "--09" or
"--09+07:00" (9 months, optional
time-zone)
- gMonthDay()
- Format "--09-12" or
"--09-12+07:00" (9 months 12 days,
optional time-zone)
- gYear()
- Format 2006 or
"2006+07:00" (year 2006, optional
time-zone)
- gYearMonth()
- Format "2006-11" or
"2006-11+07:00" (november 2006, optional
time-zone)
- time()
- An moment in time, as can happen every day.
Duration
See XML::Compile::Util::duration2secs() to convert duration
stamps into seconds.
- dayTimeDuration()
- Format "-PnDTnHnMnS", where optional
starting "-" means negative. The
"P" is obligatory, and the
"T" indicates start of a time part. All
other "n[DHMS]" are optional.
- duration()
- Format "-PnYnMnDTnHnMnS", where optional
starting "-" means negative. The
"P" is obligatory, and the
"T" indicates start of a time part. All
other "n[YMDHMS]" are optional.
- yearMonthDuration()
- Format "-PnYnMn", where optional
starting "-" means negative. The
"P" is obligatory, the
"n[YM]" are optional.
Strings
- ID(, IDREF, IDREFS)
- A label, reference to a label, or set of references.
PARTIAL IMPLEMENTATION: the validity of used characters is not
checked.
- NCName(, ENTITY, ENTITIES)
- A name which contains no colons (a non-colonized name).
- Name()
- language()
- An RFC3066 language indicator.
- normalizedString()
- String where all sequence of white-spaces (including new-lines) are
interpreted as one blank. Blanks at beginning and the end of the string
are ignored.
- string()
- (Usually utf8) string.
- token(, NMTOKEN, NMTOKENS)
URI
- NOTATION()
- NOT IMPLEMENTED, so treated as string.
- QName()
- A qualified type name: a type name with optional prefix. The prefix
notation "prefix:type" will be
translated into the "{$ns}type"
notation.
For writers, this translation can only happen when the
$ns is also in use on some other place in the
message: the name-space declaration can not be added at run-time. In
other cases, you will get a run-time error. Play with
XML::Compile::Schema::compile(prefixes), predefining evenything what may
be used, setting the "used" count to
1.
- anyURI()
- You may pass a string or, for instance, an URI object which will be
stringified into an URI. When read, the data will not automatically be
translated into an URI object: it may not be used that way.
only in 1999 and 2000/10 schemas
- binary()
- Perl strings can contain any byte, also nul-strings, so can contain any
sequence of bits. Limited to byte length.
- timeDuration()
- 'Old' name for duration().
- uriReference()
- Probably the same rules as anyURI().
This module is part of XML-Compile distribution version 1.63, built on July 02,
2019. Website: http://perl.overmeer.net/xml-compile/
Copyrights 2006-2019 by [Mark Overmeer <markov@cpan.org>]. For other
contributors see ChangeLog.
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself. See
http://dev.perl.org/licenses/
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