NAME¶
Tangram::Type::TimeAndDate - map date & time fields
SYNOPSIS¶
use Tangram;
# any of:
use Tangram::Type::Date; # RAW - use with caution
use Tangram::Type::Time;
use Tangram::Type::Date::Cooked; # pure ISO-8601
use Tangram::Type::Date::DateTime;
use Tangram::Type::Date::Manip;
use Tangram::Type::Date::TimePiece;
Tangram::Schema->new(
classes => {
NaturalPerson => {
fields => {
rawdatetime => [ qw( birth death ) ],
rawdate => [ qw( depart return ) ],
rawtime => [ qw( breakfast lunch dinner ) ],
cookeddatetime => [ qw( cooked ) ],
dmdatetime => [ qw( datemanip ) ],
timepiece => [ qw( fob ) ],
datetime => [ qw( bloat ) ],
DESCRIPTION¶
These classes are responsible for mapping strings to SQL date or time types.
These classes are not imported by Tangram.pm, thus they must be explicitly
imported via a "use" directive.
The three typetags "rawdate", "rawtime" and
"rawdatetime" are for mapping strings to SQL date/time types, for
databases that differentiate between "dates" and "times".
'Raw' means that Tangram doesn't attempt to interpret the strings, it merely
passes them down to DBI.
"cookeddatetime" is like "rawdatetime" except that the date
is converted from the DBMS format to ISO-8601 in the form :
YYYY-MM-DDTHH:MM:SS
for example:
2004-12-25T13:14:15
Other modules then further cook this ISO date into an object as is the
convention for a particular module. This only works with back-ends that allow
per-connection settings for the default date format, such as
Tangram::Driver::Oracle.
On the way back out, the date is converted back to the DBMS format. This is
achieved via vendor-specific functions mentioned in
"Tangram::Relational".
The persistent fields may be specified either as a hash or as an array of field
names.
In the hash form, each entry consists in a field name and an associated option
hash. The option hash may contain the following fields:
- * col
- * sql
"col" sets the name of the column used to store the field's value.
This field is optional, it defaults to the persistent field name. Override if
the field name is not an acceptable SQL column name.
"sql" sets the SQL type of the column. Used by
Schema::deploy()
when initializing a database. Defaults to 'VARCHAR(255) NULL' for strings,
'INT NULL' for ints and 'REAL NULL' for reals.
The persistent fields may also be specified as an array of strings, in which
case the defaults are used.