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- <?php
- /**
- * @file
- * Install, update and uninstall functions for the search module.
- */
- /**
- * Implements hook_uninstall().
- */
- function search_uninstall() {
- variable_del('minimum_word_size');
- variable_del('overlap_cjk');
- variable_del('search_cron_limit');
- variable_del('search_logging');
- }
- /**
- * Implements hook_schema().
- */
- function search_schema() {
- $schema['search_dataset'] = array(
- 'description' => 'Stores items that will be searched.',
- 'fields' => array(
- 'sid' => array(
- 'type' => 'int',
- 'unsigned' => TRUE,
- 'not null' => TRUE,
- 'default' => 0,
- 'description' => 'Search item ID, e.g. node ID for nodes.',
- ),
- 'type' => array(
- 'type' => 'varchar',
- 'length' => 16,
- 'not null' => TRUE,
- 'description' => 'Type of item, e.g. node.',
- ),
- 'data' => array(
- 'type' => 'text',
- 'not null' => TRUE,
- 'size' => 'big',
- 'description' => 'List of space-separated words from the item.',
- ),
- 'reindex' => array(
- 'type' => 'int',
- 'unsigned' => TRUE,
- 'not null' => TRUE,
- 'default' => 0,
- 'description' => 'Set to force node reindexing.',
- ),
- ),
- 'primary key' => array('sid', 'type'),
- );
- $schema['search_index'] = array(
- 'description' => 'Stores the search index, associating words, items and scores.',
- 'fields' => array(
- 'word' => array(
- 'type' => 'varchar',
- 'length' => 50,
- 'not null' => TRUE,
- 'default' => '',
- 'description' => 'The {search_total}.word that is associated with the search item.',
- ),
- 'sid' => array(
- 'type' => 'int',
- 'unsigned' => TRUE,
- 'not null' => TRUE,
- 'default' => 0,
- 'description' => 'The {search_dataset}.sid of the searchable item to which the word belongs.',
- ),
- 'type' => array(
- 'type' => 'varchar',
- 'length' => 16,
- 'not null' => TRUE,
- 'description' => 'The {search_dataset}.type of the searchable item to which the word belongs.',
- ),
- 'score' => array(
- 'type' => 'float',
- 'not null' => FALSE,
- 'description' => 'The numeric score of the word, higher being more important.',
- ),
- ),
- 'indexes' => array(
- 'sid_type' => array('sid', 'type'),
- ),
- 'foreign keys' => array(
- 'search_dataset' => array(
- 'table' => 'search_dataset',
- 'columns' => array(
- 'sid' => 'sid',
- 'type' => 'type',
- ),
- ),
- ),
- 'primary key' => array('word', 'sid', 'type'),
- );
- $schema['search_total'] = array(
- 'description' => 'Stores search totals for words.',
- 'fields' => array(
- 'word' => array(
- 'description' => 'Primary Key: Unique word in the search index.',
- 'type' => 'varchar',
- 'length' => 50,
- 'not null' => TRUE,
- 'default' => '',
- ),
- 'count' => array(
- 'description' => "The count of the word in the index using Zipf's law to equalize the probability distribution.",
- 'type' => 'float',
- 'not null' => FALSE,
- ),
- ),
- 'primary key' => array('word'),
- );
- $schema['search_node_links'] = array(
- 'description' => 'Stores items (like nodes) that link to other nodes, used to improve search scores for nodes that are frequently linked to.',
- 'fields' => array(
- 'sid' => array(
- 'type' => 'int',
- 'unsigned' => TRUE,
- 'not null' => TRUE,
- 'default' => 0,
- 'description' => 'The {search_dataset}.sid of the searchable item containing the link to the node.',
- ),
- 'type' => array(
- 'type' => 'varchar',
- 'length' => 16,
- 'not null' => TRUE,
- 'default' => '',
- 'description' => 'The {search_dataset}.type of the searchable item containing the link to the node.',
- ),
- 'nid' => array(
- 'type' => 'int',
- 'unsigned' => TRUE,
- 'not null' => TRUE,
- 'default' => 0,
- 'description' => 'The {node}.nid that this item links to.',
- ),
- 'caption' => array(
- 'type' => 'text',
- 'size' => 'big',
- 'not null' => FALSE,
- 'description' => 'The text used to link to the {node}.nid.',
- ),
- ),
- 'primary key' => array('sid', 'type', 'nid'),
- 'indexes' => array(
- 'nid' => array('nid'),
- ),
- );
- return $schema;
- }
- /**
- * Replace unique keys in 'search_dataset' and 'search_index' by primary keys.
- */
- function search_update_7000() {
- db_drop_unique_key('search_dataset', 'sid_type');
- $dataset_type_spec = array(
- 'type' => 'varchar',
- 'length' => 16,
- 'not null' => TRUE,
- 'description' => 'Type of item, e.g. node.',
- );
- db_change_field('search_dataset', 'type', 'type', $dataset_type_spec);
- db_add_primary_key('search_dataset', array('sid', 'type'));
- db_drop_index('search_index', 'word');
- db_drop_unique_key('search_index', 'word_sid_type');
- $index_type_spec = array(
- 'type' => 'varchar',
- 'length' => 16,
- 'not null' => TRUE,
- 'description' => 'The {search_dataset}.type of the searchable item to which the word belongs.',
- );
- db_change_field('search_index', 'type', 'type', $index_type_spec);
- db_add_primary_key('search_index', array('word', 'sid', 'type'));
- }
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