function system_schema_cache_7054 in Drupal 7

The cache schema corresponding to system_update_7054.

Drupal 7 adds several new cache tables. Since they all have identical schema this helper function allows them to re-use the same definition, without relying on system_schema(), which may change with future updates.

6 calls to system_schema_cache_7054()

block_update_7006 in modules/block/block.install

Recreates cache_block table.

filter_update_7009 in modules/filter/filter.install

Converts fields that store serialized variables from text to blob.

image_update_7000 in modules/image/image.install

Install the schema for users upgrading from the contributed module.

system_update_7054 in modules/system/system.install

Remove {cache_*}.headers columns.

update_fix_d7_requirements in includes/update.inc

Perform Drupal 6.x to 7.x updates that are required for update.php to function properly.

... See full list

File

modules/system/system.install, line 1770

Install, update and uninstall functions for the system module.

Code

function system_schema_cache_7054() {
  return array(
    'description' => 'Generic cache table for caching things not separated out into their own tables. Contributed modules may also use this to store cached items.',
    'fields' => array(
      'cid' => array(
        'description' => 'Primary Key: Unique cache ID.',
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
      ),
      'data' => array(
        'description' => 'A collection of data to cache.',
        'type' => 'blob',
        'not null' => FALSE,
        'size' => 'big',
      ),
      'expire' => array(
        'description' => 'A Unix timestamp indicating when the cache entry should expire, or 0 for never.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
      'created' => array(
        'description' => 'A Unix timestamp indicating when the cache entry was created.',
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
      ),
      'serialized' => array(
        'description' => 'A flag to indicate whether content is serialized (1) or not (0).',
        'type' => 'int',
        'size' => 'small',
        'not null' => TRUE,
        'default' => 0,
      ),
    ),
    'indexes' => array(
      'expire' => array(
        'expire',
      ),
    ),
    'primary key' => array(
      'cid',
    ),
  );
}