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<?php
// $Id$
/**
* @file
* Install, update and uninstall functions for the field module.
*/
/**
* Implements hook_schema().
*/
function field_schema() {
// Static (meta) tables.
$schema['field_config'] = array(
'fields' => array(
'id' => array(
'type' => 'serial',
'not null' => TRUE,
'description' => 'The primary identifier for a field',
),
'field_name' => array(
'type' => 'varchar',
'length' => 32,
'not null' => TRUE,
'description' => 'The name of this field. Non-deleted field names are unique, but multiple deleted fields can have the same name.',
),
'type' => array(
'type' => 'varchar',
'length' => 128,
'not null' => TRUE,
'description' => 'The type of this field.',
),
'module' => array(
'type' => 'varchar',
'length' => 128,
'not null' => TRUE,
'default' => '',
'description' => 'The module that implements the field type.',
),
'active' => array(
'type' => 'int',
'size' => 'tiny',
'not null' => TRUE,
'default' => 0,
'description' => 'Boolean indicating whether the module that implements the field type is enabled.',
),
'storage_type' => array(
'type' => 'varchar',
'length' => 128,
'not null' => TRUE,
'description' => 'The storage backend for the field.',
),
'storage_module' => array(
'type' => 'varchar',
'length' => 128,
'not null' => TRUE,
'default' => '',
'description' => 'The module that implements the storage backend.',
),
'storage_active' => array(
'type' => 'int',
'size' => 'tiny',
'not null' => TRUE,
'default' => 0,
'description' => 'Boolean indicating whether the module that implements the storage backend is enabled.',
),
'locked' => array(
'type' => 'int',
'size' => 'tiny',
'not null' => TRUE,
'default' => 0,
'description' => '@TODO',
),
'data' => array(
'type' => 'blob',
'size' => 'big',
'not null' => TRUE,
'serialize' => TRUE,
'description' => 'Serialized data containing the field properties that do not warrant a dedicated column.',
),
'cardinality' => array(
'type' => 'int',
'size' => 'tiny',
'not null' => TRUE,
'default' => 0,
),
'translatable' => array(
'type' => 'int',
'size' => 'tiny',
'not null' => TRUE,
'default' => 0,
),
'deleted' => array(
'type' => 'int',
'size' => 'tiny',
'not null' => TRUE,
'default' => 0,
),
),
'primary key' => array('id'),
'indexes' => array(
'field_name' => array('field_name'),
// Used by field_read_fields().
'active' => array('active'),
'storage_active' => array('storage_active'),
'deleted' => array('deleted'),
// Used by field_modules_disabled().
'module' => array('module'),
'storage_module' => array('storage_module'),
// Used by field_associate_fields().
'type' => array('type'),
'storage_type' => array('storage_type'),
),
);
$schema['field_config_instance'] = array(
'fields' => array(
'id' => array(
'type' => 'serial',
'not null' => TRUE,
'description' => 'The primary identifier for a field instance',
),
'field_id' => array(
'type' => 'int',
'not null' => TRUE,
'description' => 'The identifier of the field attached by this instance',
),
'field_name' => array(
'type' => 'varchar',
'length' => 32,
'not null' => TRUE,
'default' => ''
),
'entity_type' => array(
'type' => 'varchar',
'length' => 32,
'not null' => TRUE,
'default' => ''
),
'bundle' => array(
'type' => 'varchar',
'length' => 128,
'not null' => TRUE,
'default' => ''
),
'data' => array(
'type' => 'blob',
'size' => 'big',
'not null' => TRUE,
'serialize' => TRUE,
),
'deleted' => array(
'type' => 'int',
'size' => 'tiny',
'not null' => TRUE,
'default' => 0,
),
),
'primary key' => array('id'),
'indexes' => array(
// Used by field_delete_instance().
'field_name_bundle' => array('field_name', 'entity_type', 'bundle'),
// Used by field_read_instances().
'deleted' => array('deleted'),
),
);
$schema['cache_field'] = drupal_get_schema_unprocessed('system', 'cache');
return $schema;
}
/**
* Utility function: create a field by writing directly to the database.
*
* This function is valid for a database schema version 7000.
*
* @ingroup update-api-6.x-to-7.x
*/
function _update_7000_field_create_field(&$field) {
// Merge in default values.`
$field += array(
'entity_types' => array(),
'cardinality' => 1,
'translatable' => FALSE,
'locked' => FALSE,
'settings' => array(),
'indexes' => array(),
'deleted' => 0,
'active' => 1,
);
// Set storage.
$field['storage'] = array(
'type' => 'field_sql_storage',
'settings' => array(),
'module' => 'field_sql_storage',
'active' => 1,
);
// The serialized 'data' column contains everything from $field that does not
// have its own column and is not automatically populated when the field is
// read.
$data = $field;
unset($data['columns'], $data['field_name'], $data['type'], $data['active'], $data['module'], $data['storage_type'], $data['storage_active'], $data['storage_module'], $data['locked'], $data['cardinality'], $data['deleted']);
// Additionally, do not save the 'bundles' property populated by
// field_info_field().
unset($data['bundles']);
// Write the field to the database.
$record = array(
'field_name' => $field['field_name'],
'type' => $field['type'],
'module' => $field['module'],
'active' => (int) $field['active'],
'storage_type' => $field['storage']['type'],
'storage_module' => $field['storage']['module'],
'storage_active' => (int) $field['storage']['active'],
'locked' => (int) $field['locked'],
'data' => serialize($data),
'cardinality' => $field['cardinality'],
'translatable' => (int) $field['translatable'],
'deleted' => (int) $field['deleted'],
);
// We don't use drupal_write_record() here because it depends on the schema.
$field['id'] = db_insert('field_config')
->fields($record)
->execute();
// Create storage for this field, the field module is not guaranteed to be
// loaded at this point.
module_load_install($field['module']);
$schema = (array) module_invoke($field['module'], 'field_schema', $field);
$schema += array('columns' => array(), 'indexes' => array());
// 'columns' are hardcoded in the field type.
$field['columns'] = $schema['columns'];
// 'indexes' can be both hardcoded in the field type, and specified in the
// incoming $field definition.
$field['indexes'] += $schema['indexes'];
field_sql_storage_field_storage_create_field($field);
}
/**
* Utility function: create a field instance directly to the database.
*
* This function is valid for a database schema version 7000.
*
* @ingroup update-api-6.x-to-7.x
*/
function _update_7000_field_create_instance($field, &$instance) {
// Merge in defaults.
$instance += array(
'field_id' => $field['id'],
'field_name' => $field['field_name'],
'deleted' => 0,
);
// The serialized 'data' column contains everything from $instance that does
// not have its own column and is not automatically populated when the
// instance is read.
$data = $instance;
unset($data['id'], $data['field_id'], $data['field_name'], $data['entity_type'], $data['bundle'], $data['deleted']);
$record = array(
'field_id' => $instance['field_id'],
'field_name' => $instance['field_name'],
'entity_type' => $instance['entity_type'],
'bundle' => $instance['bundle'],
'data' => serialize($data),
'deleted' => (int) $instance['deleted'],
);
$instance['id'] = db_insert('field_config_instance')
->fields($record)
->execute();
}
/**
* @defgroup field-updates-6.x-to-7.x Field updates from 6.x to 7.x
* @{
*/
/**
* Field update version placeholder.
*/
function field_update_7000() {
// _update_7000_field_create_field() is supposed to create fields according
// to the structure of fields after running field_update_7000(). So this
// function needs to exist but as field is a new module in Drupal 7, it
// does not need to do anything.
}
/**
* @} End of "defgroup field-updates-6.x-to-7.x"
*/
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