NAME

Mac::Apps::Seasonality::Constants - Static definitions of aspects of Seasonality.

VERSION

This document describes Mac::Apps::Seasonality::Constants version 1.0.2.

SYNOPSIS

use Mac::Apps::Seasonality::Constants qw{
    $SEASONALITY_NAME
    $SEASONALITY_CREATOR
    $SEASONALITY_HISTORY_DATABASE_PATH
};


use Mac::Apps::Seasonality::Constants qw{
    $SEASONALITY_HISTORY_TABLE
    $SEASONALITY_HISTORY_COLUMN_ICAO
    $SEASONALITY_HISTORY_COLUMN_TEMPERATURE_C
};


use Mac::Apps::Seasonality::Constants qw{
    $SEASONALITY_DB_STATUS_TABLE
    $SEASONALITY_DB_STATUS_COLUMN_NEW_RECORDS_SINCE_VACUUM
};


use Mac::Apps::Seasonality::Constants qw{
    $SEASONALITY_HISTORY_COLUMNS_REF
    $SEASONALITY_HISTORY_COLUMN_NUMBERS_BY_COLUMN_NAME_REF
    $SEASONALITY_HISTORY_COLUMN_NAMES_BY_COLUMN_NUMBER_REF
};

use Mac::Apps::Seasonality::Constants qw{
    $SEASONALITY_INVALID_DATA
    $SEASONALITY_TEMPERATURE_MINIMUM
    $SEASONALITY_TEMPERATURE_MAXIMUM
};


use Mac::Apps::Seasonality::Constants qw{ :all };
use Mac::Apps::Seasonality::Constants qw{ :application };
use Mac::Apps::Seasonality::Constants qw{ :database };
use Mac::Apps::Seasonality::Constants qw{ :data };

DESCRIPTION

This provides static metadata about Seasonality via "constants". The exposed values are made immutable via Readonly and not constant, so they are usable within string interpolation, etc.

None of the values are exported by default to avoid the possibility of name clashes, though the names should be unique enough for most uses. Each value must individually be imported or with one of the following tags:

:all

All constants.

:application

The application name and creator code. The name of and default path to the weather history database.

:database

The database table and column names.

:data

The missing data indicator value and the limits on each type of data.

INTERFACE

General Information

$SEASONALITY_NAME

The name of the application. Defined so that there's one central place for this in case it needs to be enhanced/changed in the future.

$SEASONALITY_CREATOR

The Mac OS creator code for the application.

Database and Tables

$SEASONALITY_HISTORY_DATABASE_NAME

The name of the SQLite database file that the historical data is stored in. Note that this is just the base name, and does not contain any path components.

$SEASONALITY_HISTORY_DATABASE_PATH

The path of the default location of the SQLite database file that the historical data is stored in.

$SEASONALITY_HISTORY_TABLE

The name of the database table that the historical ICAO data is stored in.

$SEASONALITY_DB_STATUS_TABLE

The name of the database table that the overall database health is kept in.

Table Columns

$SEASONALITY_HISTORY_COLUMN_ICAO, $SEASONALITY_HISTORY_COLUMN_DATE, $SEASONALITY_HISTORY_COLUMN_WIND_DIRECTION, $SEASONALITY_HISTORY_COLUMN_WIND_SPEED_KNOTS, $SEASONALITY_HISTORY_COLUMN_GUST_SPEED_KNOTS, $SEASONALITY_HISTORY_COLUMN_VISIBILITY_MILES, $SEASONALITY_HISTORY_COLUMN_TEMPERATURE_C, $SEASONALITY_HISTORY_COLUMN_DEWPOINT_C, $SEASONALITY_HISTORY_COLUMN_PRESSURE_HPA, $SEASONALITY_HISTORY_COLUMN_RELATIVE_HUMIDITY

The individual column names in the history table.

$SEASONALITY_DB_STATUS_COLUMN_NEW_RECORDS_SINCE_VACUUM

The individual column names in the database status table.

$SEASONALITY_HISTORY_COLUMNS_REF

Reference to an array of the names of the history table columns, in database schema order.

$SEASONALITY_HISTORY_COLUMN_NUMBERS_BY_COLUMN_NAME_REF

Reference to a hash mapping from column numbers to history column names.

$SEASONALITY_HISTORY_COLUMN_NAMES_BY_COLUMN_NUMBER_REF

Reference to a hash mapping from history column names to column numbers.

Data Limits

$SEASONALITY_INVALID_DATA

The numeric value that is used to denote the data from the source is missing or invalid.

$SEASONALITY_ICAO_MINIMUM_LENGTH, $SEASONALITY_ICAO_MAXIMUM_LENGTH

The range of valid sizes for ICAOs.

$SEASONALITY_TEMPERATURE_MINIMUM, $SEASONALITY_TEMPERATURE_MAXIMUM

The range of valid temperatures, in °C.

$SEASONALITY_WIND_DIRECTION_MINIMUM, $SEASONALITY_WIND_DIRECTION_MAXIMUM

The range of valid wind directions, in compass degrees. -1 indicates "variable".

$SEASONALITY_WIND_SPEED_MINIMUM, $SEASONALITY_WIND_SPEED_MAXIMUM

The range of valid wind speeds, in knots.

$SEASONALITY_VISIBILITY_MINIMUM, $SEASONALITY_VISIBILITY_MAXIMUM

The range of valid visibilities, in miles.

$SEASONALITY_PRESSURE_MINIMUM, $SEASONALITY_PRESSURE_MAXIMUM

The range of valid atmospheric pressures, in millibars/heptopascals.

$SEASONALITY_RELATIVE_HUMIDITY_MINIMUM, $SEASONALITY_RELATIVE_HUMIDITY_MAXIMUM

The range of valid humidities, in percentages.

DIAGNOSTICS

None, since there's no subroutines in this module.

CONFIGURATION AND ENVIRONMENT

Mac::Apps::Seasonality::Constants requires no configuration files or environment variables.

DEPENDENCIES

Readonly

INCOMPATIBILITIES

None reported.

BUGS AND LIMITATIONS

No bugs have been reported.

Please report any bugs or feature requests to bug-mac-apps-seasonality-loadicaohistory@rt.cpan.org, or through the web interface at http://rt.cpan.org.

AUTHOR

Elliot Shank perl@galumph.com

LICENSE AND COPYRIGHT

Copyright ©2006-2008, Elliot Shank perl@galumph.com. All rights reserved.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.

DISCLAIMER OF WARRANTY

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