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Theodotos Andreou 2018-01-14 13:10:16 +00:00
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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'));
}