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<?php
// $Id$
/**
 * Implementation of hook_install().
 */
function field_install() {
  drupal_install_schema('field');
}


/**
 * Implementation of hook_uninstall().
 */
function field_uninstall() {
  drupal_uninstall_schema('field');
}

/**
 * Implementation of hook_enable().
 */
function field_enable() {
  // Make sure old data is emptied out of the caches, since it
  // may no longer be valid since the module was last enabled,
  // especially if not all the same field modules are enabled
  // as before. Especially needed during updates.
  module_load_include('inc', 'field', 'field.crud');
  module_load_include('inc', 'field', 'field.info');
  cache_clear_all('*', 'cache_field', TRUE);
  field_cache_clear(TRUE);
}

/**
 * Implementation of hook_disable().
 */
function field_disable() {
  // Make sure old data is emptied out of the caches, since it
  // may no longer be valid when the module is re-enabled.
  module_load_include('inc', 'field', 'field.crud');
  cache_clear_all('*', 'cache_field', TRUE);
  field_cache_clear(TRUE);
}

/**
 * Implementation of hook_schema.
 */
function field_schema() {
  // Static (meta) tables.
  $schema['field_config'] = array(
    'fields' => array(
      'field_name' => array(
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE,
        'description' => 'The name of this field',
      ),
      'type' => array(
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'description' => 'The type of this field, coming from a field module',
      ),
      'locked' => array(
        'type' => 'int',
        'size' => 'tiny',
        'not null' => TRUE,
        'default' => 0,
        'description' => '@TODO',
      ),
      'settings' => array(
        'type' => 'text',
        'size' => 'medium',
        'not null' => TRUE,
        'serialize' => TRUE,
        'description' => 'Field specific settings, for example maximum length',
      ),
      'module' => array(
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => '',
      ),
      'cardinality' => array(
        'type' => 'int',
        'size' => 'tiny',
        'not null' => TRUE,
          'default' => 0,
      ),
      'active' => array(
        'type' => 'int',
        'size' => 'tiny',
        'not null' => TRUE,
          'default' => 0,
      ),
      'deleted' => array(
        'type' => 'int',
        'size' => 'tiny',
        'not null' => TRUE,
        'default' => 0,
      ),
    ),
    'primary key' => array('field_name'),
    'indexes' => array(
      // used by field_read_fields
      'active_deleted' => array('active', 'deleted'),
      // used by field_modules_disabled
      'module' => array('module'),
      // used by field_associate_fields
      'type' => array('type'),
    ),
  );
  $schema['field_config_instance'] = array(
    'fields' => array(
      'field_name'        => array('type' => 'varchar', 'length' => 32, 'not null' => TRUE, 'default' => ''),
      'bundle'            => array('type' => 'varchar', 'length' => 128, 'not null' => TRUE, 'default' => ''),
      'widget_type'       => array('type' => 'varchar', 'length' => 128, 'not null' => TRUE, 'default' => ''),
      'widget_module'     => array('type' => 'varchar', 'length' => 128, 'not null' => TRUE, 'default' => ''),
      'widget_active' => array(
        'type' => 'int',
        'size' => 'tiny',
        'not null' => TRUE,
        'default' => 0,
      ),
      'data' => array(
        'type' => 'text',
        'size' => 'medium',
        'not null' => TRUE,
        'serialize' => TRUE,
      ),
      'weight' => array(
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
      'deleted' => array(
        'type' => 'int',
        'size' => 'tiny',
        'not null' => TRUE,
        'default' => 0,
      ),
    ),
    'primary key' => array('field_name', 'bundle'),
    'indexes' => array(
      // used by field_read_instances
      'widget_active_deleted' => array('widget_active', 'deleted'),
      // used by field_modules_disabled
      'widget_module' => array('widget_module'),
      // used by field_associate_fields
      'widget_type' => array('widget_type'),
    ),
  );
  $schema['cache_field'] = drupal_get_schema_unprocessed('system', 'cache');

  return $schema;
}