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