mirror of
https://github.com/cytopia/devilbox.git
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868 lines
23 KiB
PHP
868 lines
23 KiB
PHP
<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* holds the database index class
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*
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* @package PhpMyAdmin
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*/
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namespace PMA\libraries;
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use PMA\libraries\URL;
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use PMA\libraries\Sanitize;
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/**
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* Index manipulation class
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*
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* @package PhpMyAdmin
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* @since phpMyAdmin 3.0.0
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*/
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class Index
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{
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const PRIMARY = 1;
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const UNIQUE = 2;
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const INDEX = 4;
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const SPATIAL = 8;
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const FULLTEXT = 16;
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/**
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* Class-wide storage container for indexes (caching, singleton)
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*
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* @var array
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*/
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private static $_registry = array();
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/**
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* @var string The name of the schema
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*/
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private $_schema = '';
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/**
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* @var string The name of the table
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*/
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private $_table = '';
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/**
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* @var string The name of the index
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*/
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private $_name = '';
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/**
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* Columns in index
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*
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* @var array
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*/
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private $_columns = array();
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/**
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* The index method used (BTREE, HASH, RTREE).
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*
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* @var string
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*/
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private $_type = '';
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/**
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* The index choice (PRIMARY, UNIQUE, INDEX, SPATIAL, FULLTEXT)
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*
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* @var string
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*/
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private $_choice = '';
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/**
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* Various remarks.
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*
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* @var string
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*/
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private $_remarks = '';
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/**
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* Any comment provided for the index with a COMMENT attribute when the
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* index was created.
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*
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* @var string
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*/
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private $_comment = '';
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/**
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* @var integer 0 if the index cannot contain duplicates, 1 if it can.
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*/
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private $_non_unique = 0;
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/**
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* Indicates how the key is packed. NULL if it is not.
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*
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* @var string
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*/
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private $_packed = null;
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/**
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* Block size for the index
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*
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* @var int
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*/
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private $_key_block_size = null;
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/**
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* Parser option for the index
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*
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* @var string
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*/
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private $_parser = null;
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/**
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* Constructor
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*
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* @param array $params parameters
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*/
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public function __construct($params = array())
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{
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$this->set($params);
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}
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/**
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* Creates(if not already created) and returns the corresponding Index object
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*
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* @param string $schema database name
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* @param string $table table name
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* @param string $index_name index name
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*
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* @return Index corresponding Index object
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*/
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static public function singleton($schema, $table, $index_name = '')
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{
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Index::_loadIndexes($table, $schema);
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if (! isset(Index::$_registry[$schema][$table][$index_name])) {
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$index = new Index;
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if (strlen($index_name) > 0) {
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$index->setName($index_name);
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Index::$_registry[$schema][$table][$index->getName()] = $index;
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}
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return $index;
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} else {
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return Index::$_registry[$schema][$table][$index_name];
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}
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}
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/**
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* returns an array with all indexes from the given table
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*
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* @param string $table table
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* @param string $schema schema
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*
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* @return Index[] array of indexes
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*/
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static public function getFromTable($table, $schema)
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{
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Index::_loadIndexes($table, $schema);
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if (isset(Index::$_registry[$schema][$table])) {
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return Index::$_registry[$schema][$table];
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} else {
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return array();
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}
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}
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/**
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* Returns an array with all indexes from the given table of the requested types
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*
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* @param string $table table
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* @param string $schema schema
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* @param int $choices choices
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*
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* @return Index[] array of indexes
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*/
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static public function getFromTableByChoice($table, $schema, $choices = 31)
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{
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$indexes = array();
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foreach (self::getFromTable($table, $schema) as $index) {
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if (($choices & Index::PRIMARY)
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&& $index->getChoice() == 'PRIMARY'
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) {
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$indexes[] = $index;
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}
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if (($choices & Index::UNIQUE)
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&& $index->getChoice() == 'UNIQUE'
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) {
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$indexes[] = $index;
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}
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if (($choices & Index::INDEX)
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&& $index->getChoice() == 'INDEX'
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) {
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$indexes[] = $index;
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}
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if (($choices & Index::SPATIAL)
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&& $index->getChoice() == 'SPATIAL'
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) {
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$indexes[] = $index;
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}
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if (($choices & Index::FULLTEXT)
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&& $index->getChoice() == 'FULLTEXT'
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) {
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$indexes[] = $index;
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}
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}
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return $indexes;
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}
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/**
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* return primary if set, false otherwise
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*
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* @param string $table table
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* @param string $schema schema
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*
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* @return mixed primary index or false if no one exists
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*/
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static public function getPrimary($table, $schema)
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{
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Index::_loadIndexes($table, $schema);
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if (isset(Index::$_registry[$schema][$table]['PRIMARY'])) {
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return Index::$_registry[$schema][$table]['PRIMARY'];
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} else {
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return false;
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}
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}
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/**
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* Load index data for table
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*
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* @param string $table table
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* @param string $schema schema
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*
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* @return boolean whether loading was successful
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*/
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static private function _loadIndexes($table, $schema)
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{
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if (isset(Index::$_registry[$schema][$table])) {
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return true;
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}
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$_raw_indexes = $GLOBALS['dbi']->getTableIndexes($schema, $table);
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foreach ($_raw_indexes as $_each_index) {
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$_each_index['Schema'] = $schema;
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$keyName = $_each_index['Key_name'];
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if (! isset(Index::$_registry[$schema][$table][$keyName])) {
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$key = new Index($_each_index);
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Index::$_registry[$schema][$table][$keyName] = $key;
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} else {
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$key = Index::$_registry[$schema][$table][$keyName];
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}
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$key->addColumn($_each_index);
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}
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return true;
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}
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/**
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* Add column to index
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*
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* @param array $params column params
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*
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* @return void
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*/
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public function addColumn($params)
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{
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if (isset($params['Column_name'])
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&& strlen($params['Column_name']) > 0
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) {
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$this->_columns[$params['Column_name']] = new IndexColumn($params);
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}
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}
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/**
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* Adds a list of columns to the index
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*
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* @param array $columns array containing details about the columns
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*
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* @return void
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*/
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public function addColumns($columns)
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{
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$_columns = array();
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if (isset($columns['names'])) {
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// coming from form
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// $columns[names][]
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// $columns[sub_parts][]
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foreach ($columns['names'] as $key => $name) {
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$sub_part = isset($columns['sub_parts'][$key])
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? $columns['sub_parts'][$key] : '';
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$_columns[] = array(
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'Column_name' => $name,
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'Sub_part' => $sub_part,
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);
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}
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} else {
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// coming from SHOW INDEXES
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// $columns[][name]
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// $columns[][sub_part]
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// ...
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$_columns = $columns;
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}
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foreach ($_columns as $column) {
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$this->addColumn($column);
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}
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}
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/**
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* Returns true if $column indexed in this index
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*
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* @param string $column the column
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*
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* @return boolean true if $column indexed in this index
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*/
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public function hasColumn($column)
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{
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return isset($this->_columns[$column]);
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}
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/**
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* Sets index details
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*
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* @param array $params index details
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*
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* @return void
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*/
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public function set($params)
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{
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if (isset($params['columns'])) {
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$this->addColumns($params['columns']);
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}
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if (isset($params['Schema'])) {
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$this->_schema = $params['Schema'];
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}
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if (isset($params['Table'])) {
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$this->_table = $params['Table'];
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}
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if (isset($params['Key_name'])) {
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$this->_name = $params['Key_name'];
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}
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if (isset($params['Index_type'])) {
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$this->_type = $params['Index_type'];
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}
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if (isset($params['Comment'])) {
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$this->_remarks = $params['Comment'];
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}
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if (isset($params['Index_comment'])) {
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$this->_comment = $params['Index_comment'];
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}
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if (isset($params['Non_unique'])) {
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$this->_non_unique = $params['Non_unique'];
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}
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if (isset($params['Packed'])) {
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$this->_packed = $params['Packed'];
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}
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if (isset($params['Index_choice'])) {
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$this->_choice = $params['Index_choice'];
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} else {
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if ('PRIMARY' == $this->_name) {
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$this->_choice = 'PRIMARY';
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} elseif ('FULLTEXT' == $this->_type) {
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$this->_choice = 'FULLTEXT';
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$this->_type = '';
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} elseif ('SPATIAL' == $this->_type) {
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$this->_choice = 'SPATIAL';
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$this->_type = '';
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} elseif ('0' == $this->_non_unique) {
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$this->_choice = 'UNIQUE';
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} else {
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$this->_choice = 'INDEX';
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}
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}
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if (isset($params['Key_block_size'])) {
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$this->_key_block_size = $params['Key_block_size'];
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}
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if (isset($params['Parser'])) {
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$this->_parser = $params['Parser'];
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}
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}
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/**
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* Returns the number of columns of the index
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*
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* @return integer the number of the columns
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*/
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public function getColumnCount()
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{
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return count($this->_columns);
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}
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/**
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* Returns the index comment
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*
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* @return string index comment
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*/
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public function getComment()
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{
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return $this->_comment;
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}
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/**
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* Returns index remarks
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*
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* @return string index remarks
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*/
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public function getRemarks()
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{
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return $this->_remarks;
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}
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/**
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* Return the key block size
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*
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* @return number
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*/
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public function getKeyBlockSize()
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{
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return $this->_key_block_size;
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}
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/**
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* Return the parser
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*
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* @return string
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*/
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public function getParser()
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{
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return $this->_parser;
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}
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/**
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* Returns concatenated remarks and comment
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*
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* @return string concatenated remarks and comment
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*/
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public function getComments()
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{
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$comments = $this->getRemarks();
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if (strlen($comments) > 0) {
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$comments .= "\n";
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}
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$comments .= $this->getComment();
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return $comments;
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}
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/**
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* Returns index type (BTREE, HASH, RTREE)
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*
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* @return string index type
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*/
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public function getType()
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{
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return $this->_type;
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}
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/**
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* Returns index choice (PRIMARY, UNIQUE, INDEX, SPATIAL, FULLTEXT)
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*
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* @return string index choice
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*/
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public function getChoice()
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{
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return $this->_choice;
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}
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/**
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* Return a list of all index choices
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*
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* @return string[] index choices
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*/
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static public function getIndexChoices()
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{
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return array(
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'PRIMARY',
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'INDEX',
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'UNIQUE',
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'SPATIAL',
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'FULLTEXT',
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);
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}
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/**
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* Returns a lit of all index types
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*
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* @return string[] index types
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*/
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static public function getIndexTypes()
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{
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return array(
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'BTREE',
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'HASH'
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);
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}
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/**
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* Returns HTML for the index choice selector
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*
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* @param boolean $edit_table whether this is table editing
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*
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* @return string HTML for the index choice selector
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*/
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public function generateIndexChoiceSelector($edit_table)
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{
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$html_options = '<select name="index[Index_choice]"'
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. ' id="select_index_choice" '
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. ($edit_table ? 'disabled="disabled"' : '') . '>';
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foreach (Index::getIndexChoices() as $each_index_choice) {
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if ($each_index_choice === 'PRIMARY'
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&& $this->_choice !== 'PRIMARY'
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&& Index::getPrimary($this->_table, $this->_schema)
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) {
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// skip PRIMARY if there is already one in the table
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continue;
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}
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$html_options .= '<option value="' . $each_index_choice . '"'
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. (($this->_choice == $each_index_choice)
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? ' selected="selected"'
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: '')
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. '>' . $each_index_choice . '</option>' . "\n";
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}
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$html_options .= '</select>';
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return $html_options;
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}
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/**
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* Returns HTML for the index type selector
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*
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* @return string HTML for the index type selector
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*/
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public function generateIndexTypeSelector()
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{
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$types = array("" => "--");
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foreach (Index::getIndexTypes() as $type) {
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$types[$type] = $type;
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}
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return Util::getDropdown(
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"index[Index_type]", $types,
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$this->_type, "select_index_type"
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);
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}
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/**
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* Returns how the index is packed
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*
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* @return string how the index is packed
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*/
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public function getPacked()
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{
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return $this->_packed;
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}
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|
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/**
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* Returns 'No' if the index is not packed,
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* how the index is packed if packed
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*
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* @return string
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*/
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public function isPacked()
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{
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if (null === $this->_packed) {
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return __('No');
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}
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return htmlspecialchars($this->_packed);
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}
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|
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/**
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* Returns integer 0 if the index cannot contain duplicates, 1 if it can
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*
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* @return integer 0 if the index cannot contain duplicates, 1 if it can
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*/
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public function getNonUnique()
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{
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return $this->_non_unique;
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}
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|
|
/**
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* Returns whether the index is a 'Unique' index
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*
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* @param boolean $as_text whether to output should be in text
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*
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* @return mixed whether the index is a 'Unique' index
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*/
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public function isUnique($as_text = false)
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{
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if ($as_text) {
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$r = array(
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'0' => __('Yes'),
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'1' => __('No'),
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);
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} else {
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$r = array(
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'0' => true,
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'1' => false,
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);
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}
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return $r[$this->_non_unique];
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}
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|
|
/**
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* Returns the name of the index
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*
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* @return string the name of the index
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*/
|
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public function getName()
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{
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return $this->_name;
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}
|
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|
|
/**
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|
* Sets the name of the index
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*
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* @param string $name index name
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*
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* @return void
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*/
|
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public function setName($name)
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{
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$this->_name = (string) $name;
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}
|
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|
|
/**
|
|
* Returns the columns of the index
|
|
*
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* @return IndexColumn[] the columns of the index
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|
*/
|
|
public function getColumns()
|
|
{
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return $this->_columns;
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}
|
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/**
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* Show index data
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*
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* @param string $table The table name
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* @param string $schema The schema name
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* @param boolean $print_mode Whether the output is for the print mode
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*
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* @return string HTML for showing index
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*
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* @access public
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*/
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static public function getHtmlForIndexes($table, $schema, $print_mode = false)
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{
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$indexes = Index::getFromTable($table, $schema);
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$no_indexes_class = count($indexes) > 0 ? ' hide' : '';
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$no_indexes = "<div class='no_indexes_defined$no_indexes_class'>";
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$no_indexes .= Message::notice(__('No index defined!'))->getDisplay();
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$no_indexes .= '</div>';
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if (! $print_mode) {
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$r = '<fieldset class="index_info">';
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$r .= '<legend id="index_header">' . __('Indexes');
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$r .= Util::showMySQLDocu('optimizing-database-structure');
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$r .= '</legend>';
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$r .= $no_indexes;
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if (count($indexes) < 1) {
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$r .= '</fieldset>';
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return $r;
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}
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$r .= Index::findDuplicates($table, $schema);
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} else {
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$r = '<h3>' . __('Indexes') . '</h3>';
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$r .= $no_indexes;
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if (count($indexes) < 1) {
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return $r;
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}
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}
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$r .= '<table id="table_index">';
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$r .= '<thead>';
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$r .= '<tr>';
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if (! $print_mode) {
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$r .= '<th colspan="2" class="print_ignore">' . __('Action') . '</th>';
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}
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$r .= '<th>' . __('Keyname') . '</th>';
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$r .= '<th>' . __('Type') . '</th>';
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$r .= '<th>' . __('Unique') . '</th>';
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$r .= '<th>' . __('Packed') . '</th>';
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$r .= '<th>' . __('Column') . '</th>';
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$r .= '<th>' . __('Cardinality') . '</th>';
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$r .= '<th>' . __('Collation') . '</th>';
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$r .= '<th>' . __('Null') . '</th>';
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$r .= '<th>' . __('Comment') . '</th>';
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$r .= '</tr>';
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$r .= '</thead>';
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$r .= '<tbody>';
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foreach ($indexes as $index) {
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$row_span = ' rowspan="' . $index->getColumnCount() . '" ';
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$r .= '<tr class="noclick" >';
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if (! $print_mode) {
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$this_params = $GLOBALS['url_params'];
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$this_params['index'] = $index->getName();
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$r .= '<td class="edit_index print_ignore';
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$r .= ' ajax';
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$r .= '" ' . $row_span . '>'
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. ' <a class="';
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$r .= 'ajax';
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$r .= '" href="tbl_indexes.php' . URL::getCommon($this_params)
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. '">' . Util::getIcon('b_edit.png', __('Edit')) . '</a>'
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. '</td>' . "\n";
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$this_params = $GLOBALS['url_params'];
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if ($index->getName() == 'PRIMARY') {
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$this_params['sql_query'] = 'ALTER TABLE '
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. Util::backquote($table)
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. ' DROP PRIMARY KEY;';
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$this_params['message_to_show']
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= __('The primary key has been dropped.');
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$js_msg = Sanitize::jsFormat($this_params['sql_query']);
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} else {
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$this_params['sql_query'] = 'ALTER TABLE '
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. Util::backquote($table) . ' DROP INDEX '
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. Util::backquote($index->getName()) . ';';
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$this_params['message_to_show'] = sprintf(
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__('Index %s has been dropped.'), htmlspecialchars($index->getName())
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);
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$js_msg = Sanitize::jsFormat($this_params['sql_query']);
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}
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$r .= '<td ' . $row_span . ' class="print_ignore">';
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$r .= '<input type="hidden" class="drop_primary_key_index_msg"'
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. ' value="' . $js_msg . '" />';
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$r .= ' <a class="drop_primary_key_index_anchor';
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$r .= ' ajax';
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$r .= '" href="sql.php' . URL::getCommon($this_params)
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. '" >'
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. Util::getIcon('b_drop.png', __('Drop')) . '</a>'
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. '</td>' . "\n";
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}
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if (! $print_mode) {
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$r .= '<th ' . $row_span . '>'
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. htmlspecialchars($index->getName())
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. '</th>';
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} else {
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$r .= '<td ' . $row_span . '>'
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. htmlspecialchars($index->getName())
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. '</td>';
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}
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$r .= '<td ' . $row_span . '>';
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$type = $index->getType();
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if (! empty($type)) {
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$r .= htmlspecialchars($type);
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} else {
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$r .= htmlspecialchars($index->getChoice());
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}
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$r .= '</td>';
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$r .= '<td ' . $row_span . '>' . $index->isUnique(true) . '</td>';
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$r .= '<td ' . $row_span . '>' . $index->isPacked() . '</td>';
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foreach ($index->getColumns() as $column) {
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if ($column->getSeqInIndex() > 1) {
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$r .= '<tr class="noclick" >';
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}
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$r .= '<td>' . htmlspecialchars($column->getName());
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if ($column->getSubPart()) {
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$r .= ' (' . htmlspecialchars($column->getSubPart()) . ')';
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}
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$r .= '</td>';
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$r .= '<td>'
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. htmlspecialchars($column->getCardinality())
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. '</td>';
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$r .= '<td>'
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. htmlspecialchars($column->getCollation())
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. '</td>';
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$r .= '<td>'
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. htmlspecialchars($column->getNull(true))
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. '</td>';
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if ($column->getSeqInIndex() == 1
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) {
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$r .= '<td ' . $row_span . '>'
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. htmlspecialchars($index->getComments()) . '</td>';
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}
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$r .= '</tr>';
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} // end foreach $index['Sequences']
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} // end while
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$r .= '</tbody>';
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$r .= '</table>';
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if (! $print_mode) {
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$r .= '</fieldset>';
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}
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return $r;
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}
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/**
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* Gets the properties in an array for comparison purposes
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*
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* @return array an array containing the properties of the index
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*/
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public function getCompareData()
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{
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$data = array(
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// 'Non_unique' => $this->_non_unique,
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'Packed' => $this->_packed,
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'Index_choice' => $this->_choice,
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);
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foreach ($this->_columns as $column) {
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$data['columns'][] = $column->getCompareData();
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}
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return $data;
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}
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/**
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* Function to check over array of indexes and look for common problems
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*
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* @param string $table table name
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* @param string $schema schema name
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*
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* @return string Output HTML
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* @access public
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*/
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static public function findDuplicates($table, $schema)
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{
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$indexes = Index::getFromTable($table, $schema);
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$output = '';
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// count($indexes) < 2:
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// there is no need to check if there less than two indexes
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if (count($indexes) < 2) {
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return $output;
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}
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// remove last index from stack and ...
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while ($while_index = array_pop($indexes)) {
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// ... compare with every remaining index in stack
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foreach ($indexes as $each_index) {
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if ($each_index->getCompareData() !== $while_index->getCompareData()
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) {
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continue;
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}
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// did not find any difference
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// so it makes no sense to have this two equal indexes
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$message = Message::notice(
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__(
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'The indexes %1$s and %2$s seem to be equal and one of them '
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. 'could possibly be removed.'
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)
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);
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$message->addParam($each_index->getName());
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$message->addParam($while_index->getName());
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$output .= $message->getDisplay();
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// there is no need to check any further indexes if we have already
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// found that this one has a duplicate
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continue 2;
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}
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}
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return $output;
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}
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}
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