John Siracusa > Rose-DB-Object > Rose::DB::Object::MakeMethods::Time

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Module Version: 0.771   Source  

NAME ^

Rose::DB::Object::MakeMethods::Time - Create time-related methods for Rose::DB::Object-derived objects.

SYNOPSIS ^

    package MyDBObject;

    use base 'Rose::DB::Object';

    use Rose::DB::Object::MakeMethods::Time
    (
      interval => 
      [
        t1 => { scale => 6 },
        t2 => { default => '3 days 6 minutes 5 seconds' },
      ],

      time =>
      [
        start => { scale => 5 },
        end   => { default => '12:34:56' },
      ],
    );

    ...

    $o->t1('5 minutes 0.003 seconds');

    $dt_dur = $o->t1; # DateTime::Duration object

    print $o->t1->minutes;    # 5
    print $o->t1->nanosecond; # 3000000

    $o->start('12:34:56.12345');

    print $o->start->nanosecond; # 123450000
    print $o->start->as_string;  # 12:34:56.12345

    $o->end('6pm');

    $tc = $o->end; # Time::Clock object

    print $o->end->hour; # 18
    print $o->end->ampm; # PM

    print $o->end->format('%I:%M %p'); # 6:00 PM
    $o->end->add(hours => 1);
    print $o->end->format('%I:%M %p'); # 7:00 PM

DESCRIPTION ^

Rose::DB::Object::MakeMethods::Time creates methods that deal with times, and inherits from Rose::Object::MakeMethods. See the Rose::Object::MakeMethods documentation to learn about the interface. The method types provided by this module are described below.

All method types defined by this module are designed to work with objects that are subclasses of (or otherwise conform to the interface of) Rose::DB::Object. In particular, the object is expected to have a db method that returns a Rose::DB-derived object. See the Rose::DB::Object documentation for more details.

METHODS TYPES ^

interval

Create get/set methods for interval (years, months, days, hours, minutes, seconds) attributes.

Options
default

Determines the default value of the attribute.

end_of_month_mode

This mode determines how math is done on duration objects. If defined, the end_of_month setting for each DateTime::Duration object created by this method will be set to the specified mode. Otherwise, the end_of_month parameter will not be passed to the DateTime::Duration constructor.

Valid modes are wrap, limit, and preserve. See the documentation for DateTime::Duration for a full explanation.

hash_key

The key inside the hash-based object to use for the storage of this attribute. Defaults to the name of the method.

interface

Choose the interface. The default is get_set.

scale

An integer number of places past the decimal point preserved for fractional seconds. Defaults to 0.

Interfaces
get_set

Creates a get/set method for a interval (years, months, days, hours, minutes, seconds) attribute. When setting the attribute, the value is passed through the parse_interval method of the object's db attribute. If that fails, a fatal error will occur.

When saving to the database, the method will pass the attribute value through the format_interval method of the object's db attribute before returning it.

This method is designed to allow interval values to make a round trip from and back into the database without ever being "inflated" into DateTime::Duration objects. Any use of the attribute (get or set) outside the context of loading from or saving to the database will cause the value to be "inflated" using the parse_interval method of the object's db attribute.

get

Creates an accessor method for a interval (years, months, days, hours, minutes, seconds) attribute. This method behaves like the get_set method, except that the value cannot be set.

set

Creates a mutator method for a interval (years, months, days, hours, minutes, seconds) attribute. This method behaves like the get_set method, except that a fatal error will occur if no arguments are passed.

Example:

    package MyDBObject;

    use base 'Rose::DB::Object';

    use Rose::DB::Object::MakeMethods::Time
    (
      time => 
      [
        't1' => { scale => 6 },
        't2' => { default => '3 days 6 minutes 5 seconds' },
      ],
    );

    ...

    $o->t1('5 minutes 0.003 seconds');

    $dt_dur = $o->t1; # DateTime::Duration object

    print $o->t1->minutes;    # 5
    print $o->t1->nanosecond; # 3000000
time

Create get/set methods for time (hours, minutes, seconds) attributes. Fractional seconds up to nanosecond precision are supported.

Options
default

Determines the default value of the attribute.

hash_key

The key inside the hash-based object to use for the storage of this attribute. Defaults to the name of the method.

interface

Choose the interface. The default is get_set.

scale

An integer number of places past the decimal point preserved for fractional seconds. Defaults to 0. The maximum value is 9.

Interfaces
get_set

Creates a get/set method for a time attribute. When setting the attribute, the value is passed through the parse_time method of the object's db attribute. If that fails, a fatal error will occur.

When saving to the database, the method will pass the attribute value through the format_time method of the object's db attribute before returning it.

This method is designed to allow time values to make a round trip from and back into the database without ever being "inflated" into Time::Clock objects. Any use of the attribute (get or set) outside the context of loading from or saving to the database will cause the value to be "inflated" using the parse_time method of the object's db attribute.

get

Creates an accessor method for a time attribute. This method behaves like the get_set method, except that the value cannot be set.

set

Creates a mutator method for a time attribute. This method behaves like the get_set method, except that a fatal error will occur if no arguments are passed.

Example:

    package MyDBObject;

    use base 'Rose::DB::Object';

    use Rose::DB::Object::MakeMethods::Time
    (
      time =>
      [
        start => { scale => 5 },
        end   => { default => '12:34:56' },
      ],
    );

    ...

    $o->start('12:34:56.12345');

    print $o->start->nanosecond; # 123450000
    print $o->start->as_string;  # 12:34:56.12345

    $o->end('6pm');

    $tc = $o->end; # Time::Clock object

    print $o->end->hour; # 18
    print $o->end->ampm; # PM

    print $o->end->format('%I:%M %p'); # 6:00 PM
    $o->end->add(hours => 1);
    print $o->end->format('%I:%M %p'); # 7:00 PM

AUTHOR ^

John C. Siracusa (siracusa@gmail.com)

LICENSE ^

Copyright (c) 2010 by John C. Siracusa. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

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