233 lines
7.4 KiB
Plaintext
233 lines
7.4 KiB
Plaintext
<?php
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/**
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* @file
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* Install, update and uninstall functions for the uuid module.
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*/
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define('UUID_UPGRADE_VAR', 'uuid_upgrade_in_progress');
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/**
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* Include some helper functions for the Entity API.
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*/
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module_load_include('inc', 'uuid', 'uuid.entity');
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/**
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* Helper function that returns a schema field definition for UUID fields.
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*
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* @see uuid_schema_alter()
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* @see uuid_install()
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*/
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function uuid_schema_field_definition() {
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return array(
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'type' => 'char',
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'length' => 36,
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'not null' => TRUE,
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'default' => '',
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'description' => 'The Universally Unique Identifier.',
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);
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}
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/**
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* Implements of hook_schema_alter().
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*/
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function uuid_schema_alter(&$schema = array()) {
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$field = uuid_schema_field_definition();
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foreach (uuid_get_core_entity_info() as $entity_type => $info) {
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$schema[$info['base table']]['fields'][$info['entity keys']['uuid']] = $field;
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if (!empty($info['revision table']) && !empty($info['entity keys']['revision uuid'])) {
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$schema[$info['revision table']]['fields'][$info['entity keys']['revision uuid']] = $field;
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}
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}
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}
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/**
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* Implements hook_install().
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*/
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function uuid_install() {
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_uuid_install_uuid_fields();
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uuid_sync_all();
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}
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/**
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* Install the 'uuid' and 'vuuid' fields into Drupal core entity tables where needed.
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*
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* IMPORTANT: This function is called both at install and update time. If this method
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* is modified to add additional fields in the future, the update strategy must be
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* considered. See the comment in uuid_update_7102.
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*/
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function _uuid_install_uuid_fields() {
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$field = uuid_schema_field_definition();
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foreach (uuid_get_core_entity_info() as $entity_type => $info) {
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if (!db_field_exists($info['base table'], $info['entity keys']['uuid'])) {
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db_add_field($info['base table'], $info['entity keys']['uuid'], $field);
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db_add_index($info['base table'], $info['entity keys']['uuid'], array($info['entity keys']['uuid']));
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}
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if (!empty($info['revision table']) && !empty($info['entity keys']['revision uuid'])) {
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if (!db_field_exists($info['revision table'], $info['entity keys']['revision uuid'])) {
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db_add_field($info['revision table'], $info['entity keys']['revision uuid'], $field);
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db_add_index($info['revision table'], $info['entity keys']['revision uuid'], array($info['entity keys']['revision uuid']));
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}
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}
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}
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}
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/**
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* Implements hook_uninstall().
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*/
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function uuid_uninstall() {
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foreach (uuid_get_core_entity_info() as $entity_type => $info) {
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if (db_field_exists($info['base table'], $info['entity keys']['uuid'])) {
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db_drop_field($info['base table'], $info['entity keys']['uuid']);
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db_drop_index($info['base table'], $info['entity keys']['uuid']);
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}
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if (!empty($info['revision table']) && !empty($info['entity keys']['revision uuid'])) {
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if (db_field_exists($info['revision table'], $info['entity keys']['revision uuid'])) {
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db_drop_field($info['revision table'], $info['entity keys']['revision uuid']);
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db_drop_index($info['revision table'], $info['entity keys']['revision uuid']);
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}
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}
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}
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}
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/**
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* Implements hook_modules_installed().
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*/
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function uuid_modules_installed($modules) {
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// Run the installation hook. This makes sure that the schema for all
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// supported core entity types is set correct.
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uuid_install();
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}
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/**
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* Create uuid_vocabulary and uuid_term_data tables.
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*/
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function uuid_update_6001() {
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$ret = array();
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db_create_table($ret, 'uuid_vocabulary', uuid_table_schema('vocabulary', 'vid'));
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db_create_table($ret, 'uuid_term_data', uuid_table_schema('term_data', 'tid'));
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return $ret;
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}
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/**
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* For each of out tables, drop the indexe on the UUID column and add a unique
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* key on that column.
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*/
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function uuid_update_6002() {
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$ret = array();
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foreach (uuid_schema() as $table => $schema) {
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db_drop_index($ret, $table, $table . '_uuid_idx');
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db_add_unique_key($ret, $table, $table . '_uuid_key', array('uuid'));
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}
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return $ret;
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}
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/**
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* Create uuid_comment table.
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*/
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function uuid_update_6003() {
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$ret = array();
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db_create_table($ret, 'uuid_comments', uuid_table_schema('comments', 'cid'));
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return $ret;
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}
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/**
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* Fix the column definitions for uuid columns in all tables
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* to use the more efficient char spec.
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*/
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function uuid_update_6004() {
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$ret = array();
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// Use what's in uuid_table_schema in order to be consistent.
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$tables = uuid_schema();
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$spec = $tables['uuid_node']['fields']['uuid'];
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foreach ($tables as $tablename => $schema) {
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if (db_table_exists($tablename)) {
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db_change_field($ret, $tablename, 'uuid', 'uuid', $spec);
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}
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}
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return $ret;
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}
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/**
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* Modify existing uuid_node_revisions table to support revision deletion, and
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* add in as much legacy data as possible.
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*/
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function uuid_update_6005() {
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$ret = array();
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if (db_table_exists('uuid_node_revisions')) {
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// Use what's already defined in uuid schema in order to be consistent.
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$schema = uuid_schema();
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$spec = $schema['uuid_node_revisions']['fields']['nid'];
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db_add_field($ret, 'uuid_node_revisions', 'nid', $spec);
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// Add node ids to the new column, for revisions that exist, but now have a
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// default value of 0 in uuid_node_revisions.
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$result = db_query('SELECT nr.nid, nr.vid FROM {node_revisions} AS nr LEFT JOIN {uuid_node_revisions} AS unr ON unr.vid=nr.vid WHERE unr.nid=%d', 0);
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while ($item = db_fetch_object($result)) {
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$ret[] = update_sql('UPDATE {uuid_node_revisions} SET nid=' . (int) $item->nid . ' WHERE vid=' . (int) $item->vid);
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}
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// Add uuid_node_revision rows for rows that don't exist, but should.
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$result = db_query('SELECT nr.nid, nr.vid FROM {node_revisions} AS nr LEFT JOIN {uuid_node_revisions} AS unr ON unr.vid=nr.vid WHERE unr.nid IS NULL');
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while ($item = db_fetch_object($result)) {
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$ret[] = update_sql(sprintf("INSERT INTO {uuid_node_revisions} (vid, uuid, nid) VALUES(%d, '%s', %d)", $item->vid, uuid_uuid(), $item->nid));
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}
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// Delete any orphaned revision vid, uuid pairs.
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$ret[] = update_sql('DELETE FROM {uuid_node_revisions} WHERE nid=0');
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}
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return $ret;
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}
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/**
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* Remove old variables.
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*/
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function uuid_update_7100() {
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$types = array(
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'nodes',
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'users',
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'taxonomy',
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'comments',
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);
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foreach ($types as $type) {
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variable_del('uuid_automatic_for_' . $type);
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}
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return array();
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}
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/**
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* Clear cache for installations that used alpha1. Modules that previously was
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* enabled in uuid_update_7100() doesn't exist anymore.
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*/
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function uuid_update_7101() {
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drupal_flush_all_caches();
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}
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/**
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* Insure that the uuid and vuuid fields are added where needed.
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*
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* Note that update 7102 calls _uuid_install_uuid_fields(), which is an
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* idempotent function. If _uuid_install_uuid_fields() is changed at some
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* point in the future (but remains idempotent), then some uuid users
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* will have run update 7102, and some will not. A new uuid_update_7103()
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* function would would therefore be necessary to update all users to
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* the latest schema. At the same time, uuid_update_7102() could become
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* an empty function, as it would not be necessary to call _uuid_install_uuid_fields()
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* twice.
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*/
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function uuid_update_7102() {
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// If the user have disabled the UUID module during upgrade (as UPGRADE.txt
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// instructs), some functions will be missing. So include the module file.
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module_load_include('module', 'uuid', 'uuid');
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_uuid_install_uuid_fields();
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uuid_sync_all();
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}
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