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<?php |
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/** |
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* This class handles database search. (MySQL) |
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* |
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* @name ElkArte Forum |
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* @copyright ElkArte Forum contributors |
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* @license BSD http://opensource.org/licenses/BSD-3-Clause |
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* |
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* @version 1.1 |
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* |
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*/ |
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/** |
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* MySQL implementation of DbSearch |
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*/ |
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class DbSearch_MySQL implements DbSearch |
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{ |
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/** |
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* This instance of the search |
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* @var DbSearch_MySQL |
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*/ |
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private static $_search = null; |
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/** |
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* This method will tell you whether this database type supports this search type. |
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* |
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* @param string $search_type |
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*/ |
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public function search_support($search_type) |
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{ |
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$supported_types = array('fulltext'); |
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return in_array($search_type, $supported_types); |
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} |
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/** |
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* Execute the appropriate query for the search. |
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* |
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* @param string $identifier |
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* @param string $db_string |
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* @param mixed[] $db_values |
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* @param resource|null $connection |
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*/ |
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public function search_query($identifier, $db_string, $db_values = array(), $connection = null) |
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{ |
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$db = database(); |
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// Simply delegate to the database adapter method. |
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return $db->query($identifier, $db_string, $db_values, $connection); |
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} |
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/** |
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* Returns some basic info about the {db_prefix}messages table |
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* Used in ManageSearch.controller.php in the page to select the index method |
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*/ |
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public function membersTableInfo() |
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{ |
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global $db_prefix; |
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$db = database(); |
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$table_info = array(); |
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View Code Duplication |
if (preg_match('~^`(.+?)`\.(.+?)$~', $db_prefix, $match) !== 0) |
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$request = $db->query('', ' |
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SHOW TABLE STATUS |
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FROM {string:database_name} |
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LIKE {string:table_name}', |
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array( |
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'database_name' => '`' . strtr($match[1], array('`' => '')) . '`', |
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'table_name' => str_replace('_', '\_', $match[2]) . 'messages', |
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) |
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); |
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else |
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$request = $db->query('', ' |
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SHOW TABLE STATUS |
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LIKE {string:table_name}', |
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array( |
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'table_name' => str_replace('_', '\_', $db_prefix) . 'messages', |
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) |
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); |
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View Code Duplication |
if ($request !== false && $db->num_rows($request) == 1) |
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{ |
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// Only do this if the user has permission to execute this query. |
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$row = $db->fetch_assoc($request); |
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$table_info['data_length'] = $row['Data_length']; |
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$table_info['index_length'] = $row['Index_length']; |
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$table_info['fulltext_length'] = $row['Index_length']; |
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$db->free_result($request); |
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} |
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// Now check the custom index table, if it exists at all. |
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View Code Duplication |
if (preg_match('~^`(.+?)`\.(.+?)$~', $db_prefix, $match) !== 0) |
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$request = $db->query('', ' |
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SHOW TABLE STATUS |
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FROM {string:database_name} |
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LIKE {string:table_name}', |
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array( |
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'database_name' => '`' . strtr($match[1], array('`' => '')) . '`', |
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'table_name' => str_replace('_', '\_', $match[2]) . 'log_search_words', |
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) |
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); |
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else |
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$request = $db->query('', ' |
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SHOW TABLE STATUS |
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LIKE {string:table_name}', |
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array( |
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'table_name' => str_replace('_', '\_', $db_prefix) . 'log_search_words', |
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) |
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); |
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View Code Duplication |
if ($request !== false && $db->num_rows($request) == 1) |
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{ |
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// Only do this if the user has permission to execute this query. |
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$row = $db->fetch_assoc($request); |
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$table_info['index_length'] += $row['Data_length'] + $row['Index_length']; |
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$table_info['custom_index_length'] = $row['Data_length'] + $row['Index_length']; |
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$db->free_result($request); |
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} |
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return $table_info; |
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} |
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/** |
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* Method for the custom word index table. |
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* |
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* @param string $size |
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*/ |
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public function create_word_search($size) |
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{ |
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$db = database(); |
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if ($size == 'small') |
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$size = 'smallint(5)'; |
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elseif ($size == 'medium') |
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$size = 'mediumint(8)'; |
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else |
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$size = 'int(10)'; |
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$db->query('', ' |
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CREATE TABLE {db_prefix}log_search_words ( |
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id_word {raw:size} unsigned NOT NULL default {string:string_zero}, |
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id_msg int(10) unsigned NOT NULL default {string:string_zero}, |
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PRIMARY KEY (id_word, id_msg) |
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) ENGINE=InnoDB', |
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array( |
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'string_zero' => '0', |
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'size' => $size, |
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) |
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); |
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} |
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/** |
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* Static method that allows to retrieve or create an instance of this class. |
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*/ |
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public static function db_search() |
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{ |
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if (is_null(self::$_search)) |
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{ |
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self::$_search = new self(); |
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} |
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return self::$_search; |
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} |
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} |
elkarte /
Elkarte
