taxonomy_schema

Implements hook_schema().

File

modules/taxonomy/taxonomy.install, line 25

Install, update and uninstall functions for the taxonomy module.

Code

function taxonomy_schema() {
  $schema['taxonomy_term_data'] = array(
    'description' => 'Stores term information.', 
    'fields' => array(
      'tid' => array(
        'type' => 'serial', 
        'unsigned' => TRUE, 
        'not null' => TRUE, 
        'description' => 'Primary Key: Unique term ID.',
      ), 
      'vid' => array(
        'type' => 'int', 
        'unsigned' => TRUE, 
        'not null' => TRUE, 
        'default' => 0, 
        'description' => 'The {taxonomy_vocabulary}.vid of the vocabulary to which the term is assigned.',
      ), 
      'name' => array(
        'type' => 'varchar', 
        'length' => 255, 
        'not null' => TRUE, 
        'default' => '', 
        'description' => 'The term name.', 
        'translatable' => TRUE,
      ), 
      'description' => array(
        'type' => 'text', 
        'not null' => FALSE, 
        'size' => 'big', 
        'description' => 'A description of the term.', 
        'translatable' => TRUE,
      ), 
      'format' => array(
        'type' => 'varchar', 
        'length' => 255, 
        'not null' => FALSE, 
        'description' => 'The {filter_format}.format of the description.',
      ), 
      'weight' => array(
        'type' => 'int', 
        'not null' => TRUE, 
        'default' => 0, 
        'description' => 'The weight of this term in relation to other terms.',
      ),
    ), 
    'primary key' => array('tid'), 
    'foreign keys' => array(
      'vocabulary' => array(
        'table' => 'taxonomy_vocabulary', 
        'columns' => array('vid' => 'vid'),
      ),
    ), 
    'indexes' => array(
      'taxonomy_tree' => array('vid', 'weight', 'name'), 
      'vid_name' => array('vid', 'name'), 
      'name' => array('name'),
    ),
  );

  $schema['taxonomy_term_hierarchy'] = array(
    'description' => 'Stores the hierarchical relationship between terms.', 
    'fields' => array(
      'tid' => array(
        'type' => 'int', 
        'unsigned' => TRUE, 
        'not null' => TRUE, 
        'default' => 0, 
        'description' => 'Primary Key: The {taxonomy_term_data}.tid of the term.',
      ), 
      'parent' => array(
        'type' => 'int', 
        'unsigned' => TRUE, 
        'not null' => TRUE, 
        'default' => 0, 
        'description' => "Primary Key: The {taxonomy_term_data}.tid of the term's parent. 0 indicates no parent.",
      ),
    ), 
    'indexes' => array(
      'parent' => array('parent'),
    ), 
    'foreign keys' => array(
      'taxonomy_term_data' => array(
        'table' => 'taxonomy_term_data', 
        'columns' => array('tid' => 'tid'),
      ),
    ), 
    'primary key' => array('tid', 'parent'),
  );

  $schema['taxonomy_vocabulary'] = array(
    'description' => 'Stores vocabulary information.', 
    'fields' => array(
      'vid' => array(
        'type' => 'serial', 
        'unsigned' => TRUE, 
        'not null' => TRUE, 
        'description' => 'Primary Key: Unique vocabulary ID.',
      ), 
      'name' => array(
        'type' => 'varchar', 
        'length' => 255, 
        'not null' => TRUE, 
        'default' => '', 
        'description' => 'Name of the vocabulary.', 
        'translatable' => TRUE,
      ), 
      'machine_name' => array(
        'type' => 'varchar', 
        'length' => 255, 
        'not null' => TRUE, 
        'default' => '', 
        'description' => 'The vocabulary machine name.',
      ), 
      'description' => array(
        'type' => 'text', 
        'not null' => FALSE, 
        'size' => 'big', 
        'description' => 'Description of the vocabulary.', 
        'translatable' => TRUE,
      ), 
      'hierarchy' => array(
        'type' => 'int', 
        'unsigned' => TRUE, 
        'not null' => TRUE, 
        'default' => 0, 
        'size' => 'tiny', 
        'description' => 'The type of hierarchy allowed within the vocabulary. (0 = disabled, 1 = single, 2 = multiple)',
      ), 
      'module' => array(
        'type' => 'varchar', 
        'length' => 255, 
        'not null' => TRUE, 
        'default' => '', 
        'description' => 'The module which created the vocabulary.',
      ), 
      'weight' => array(
        'type' => 'int', 
        'not null' => TRUE, 
        'default' => 0, 
        'description' => 'The weight of this vocabulary in relation to other vocabularies.',
      ),
    ), 
    'primary key' => array('vid'), 
    'indexes' => array(
      'list' => array('weight', 'name'),
    ), 
    'unique keys' => array(
      'machine_name' => array('machine_name'),
    ),
  );

  $schema['taxonomy_index'] = array(
    'description' => 'Maintains denormalized information about node/term relationships.', 
    'fields' => array(
      'nid' => array(
        'description' => 'The {node}.nid this record tracks.', 
        'type' => 'int', 
        'unsigned' => TRUE, 
        'not null' => TRUE, 
        'default' => 0,
      ), 
      'tid' => array(
        'description' => 'The term ID.', 
        'type' => 'int', 
        'unsigned' => TRUE, 
        'not null' => TRUE, 
        'default' => 0,
      ), 
      'sticky' => array(
        'description' => 'Boolean indicating whether the node is sticky.', 
        'type' => 'int', 
        'not null' => FALSE, 
        'default' => 0, 
        'size' => 'tiny',
      ), 
      'created' => array(
        'description' => 'The Unix timestamp when the node was created.', 
        'type' => 'int', 
        'not null' => TRUE, 
        'default' => 0,
      ),
    ), 
    'indexes' => array(
      'term_node' => array('tid', 'sticky', 'created'), 
      'nid' => array('nid'),
    ), 
    'foreign keys' => array(
      'tracked_node' => array(
        'table' => 'node', 
        'columns' => array('nid' => 'nid'),
      ), 
      'term' => array(
        'table' => 'taxonomy_term_data', 
        'columns' => array('tid' => 'tid'),
      ),
    ),
  );

  return $schema;
}