drupal/core/modules/menu_link/menu_link.install

<?php

/**
 * @file
 * Install, update and uninstall functions for the menu_link module.
 */

/**
 * Implements hook_schema().
 */
function menu_link_schema() {
  $schema['menu_links'] = array(
    'description' => 'Contains the individual links within a menu.',
    'fields' => array(
     'menu_name' => array(
        'description' => "The menu name. All links with the same menu name (such as 'tools') are part of the same menu.",
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE,
        'default' => '',
      ),
      'mlid' => array(
        'description' => 'The menu link ID (mlid) is the integer primary key.',
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'uuid' => array(
        'description' => 'Unique Key: Universally unique identifier for this entity.',
        'type' => 'varchar',
        'length' => 128,
        'not null' => FALSE,
      ),
      'machine_name' => array(
        'description' => 'Unique machine name: Optional human-readable ID for this link.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => FALSE,
      ),
      'plid' => array(
        'description' => 'The parent link ID (plid) is the mlid of the link above in the hierarchy, or zero if the link is at the top level in its menu.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'link_path' => array(
        'description' => 'The Drupal path or external path this link points to.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
      ),
      'langcode' => array(
        'description' => 'The {language}.langcode of this link.',
        'type' => 'varchar',
        'length' => 12,
        'not null' => TRUE,
        'default' => '',
      ),
      'link_title' => array(
        'description' => 'The text displayed for the link.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
      ),
      'options' => array(
        'description' => 'A serialized array of options to be passed to the url() or l() function, such as a query string or HTML attributes.',
        'type' => 'blob',
        'not null' => FALSE,
        'serialize' => TRUE,
      ),
      'module' => array(
        'description' => 'The name of the module that generated this link.',
        'type' => 'varchar',
        'length' => DRUPAL_EXTENSION_NAME_MAX_LENGTH,
        'not null' => TRUE,
        'default' => 'system',
      ),
      'hidden' => array(
        'description' => 'A flag for whether the link should be rendered in menus. (1 = a disabled menu item that may be shown on admin screens, -1 = a menu callback, 0 = a normal, visible link)',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small',
      ),
      'external' => array(
        'description' => 'A flag to indicate if the link points to a full URL starting with a protocol, like http:// (1 = external, 0 = internal).',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small',
      ),
      'has_children' => array(
        'description' => 'Flag indicating whether any links have this link as a parent (1 = children exist, 0 = no children).',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small',
      ),
      'expanded' => array(
        'description' => 'Flag for whether this link should be rendered as expanded in menus - expanded links always have their child links displayed, instead of only when the link is in the active trail (1 = expanded, 0 = not expanded)',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small',
      ),
      'weight' => array(
        'description' => 'Link weight among links in the same menu at the same depth.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
      'depth' => array(
        'description' => 'The depth relative to the top level. A link with plid == 0 will have depth == 1.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small',
      ),
      'customized' => array(
        'description' => 'A flag to indicate that the user has manually created or edited the link (1 = customized, 0 = not customized).',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small',
      ),
      'p1' => array(
        'description' => 'The first mlid in the materialized path. If N = depth, then pN must equal the mlid. If depth > 1 then p(N-1) must equal the plid. All pX where X > depth must equal zero. The columns p1 .. p9 are also called the parents.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'p2' => array(
        'description' => 'The second mlid in the materialized path. See p1.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'p3' => array(
        'description' => 'The third mlid in the materialized path. See p1.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'p4' => array(
        'description' => 'The fourth mlid in the materialized path. See p1.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'p5' => array(
        'description' => 'The fifth mlid in the materialized path. See p1.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'p6' => array(
        'description' => 'The sixth mlid in the materialized path. See p1.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'p7' => array(
        'description' => 'The seventh mlid in the materialized path. See p1.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'p8' => array(
        'description' => 'The eighth mlid in the materialized path. See p1.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'p9' => array(
        'description' => 'The ninth mlid in the materialized path. See p1.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'updated' => array(
        'description' => 'Flag that indicates that this link was generated during the update from Drupal 5.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'small',
      ),
      'route_name' => array(
        'description' => 'The machine name of a defined Symfony Route this menu item represents.',
        'type' => 'varchar',
        'length' => 255,
      ),
      'route_parameters' => array(
        'description' => 'Serialized array of route parameters of this menu link.',
        'type' => 'blob',
        'size' => 'big',
        'not null' => FALSE,
        'serialize' => TRUE,
      ),
    ),
    'indexes' => array(
      'path_menu' => array(array('link_path', 128), 'menu_name'),
      'menu_plid_expand_child' => array('menu_name', 'plid', 'expanded', 'has_children'),
      'menu_parents' => array('menu_name', 'p1', 'p2', 'p3', 'p4', 'p5', 'p6', 'p7', 'p8', 'p9'),
    ),
    'primary key' => array('mlid'),
  );

  return $schema;
}