<?php
/**
 * @file
 * Provides field schema for interval field
 * @copyright Copyright(c) 2011 Rowlands Group
 * @license GPL v2+ http://www.fsf.org/licensing/licenses/gpl.html
 * @author Lee Rowlands leerowlands at rowlandsgroup dot com
 *
 */


/**
 * Implements hook_field_schema().
 *
 * Defines the database schema of the field, using the format used by the
 * Schema API.
 * @ingroup interval
 */
function interval_field_schema($field) {
  $columns = array(
    'interval' => array(
      'description'   => 'The number of multiples of the period',
      'type'          => 'int',
      'size'          => 'medium',
      'not null'      => TRUE,
      'default'       => 0
    ),
    'period' => array(
      'description'   => 'The period machine name',
      'type'          => 'varchar',
      'size'          => 'normal',
      'length'        => 20,
      'not null'      => TRUE,
      'default'       => 'day'
    ),
  );
  $indexes = array(
    'period' => array('period'),
    'interval' => array('interval'),
  );
  return array(
    'columns' => $columns,
    'indexes' => $indexes,
  );
}