mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
fe0a640c39
API CHANGE: db/build now no longer notifies you of changes which haven't actually happened. git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@69303 467b73ca-7a2a-4603-9d3b-597d59a354a9
662 lines
20 KiB
PHP
662 lines
20 KiB
PHP
<?php
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/**
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* MySQL connector class.
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* @package sapphire
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* @subpackage model
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*/
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class MySQLDatabase extends Database {
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/**
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* Connection to the DBMS.
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* @var resource
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*/
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private $dbConn;
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/**
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* True if we are connected to a database.
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* @var boolean
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*/
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private $active;
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/**
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* The name of the database.
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* @var string
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*/
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private $database;
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/**
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* Connect to a MySQL database.
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* @param array $parameters An map of parameters, which should include:
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* - server: The server, eg, localhost
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* - username: The username to log on with
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* - password: The password to log on with
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* - database: The database to connect to
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*/
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public function __construct($parameters) {
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$this->dbConn = mysql_connect($parameters['server'], $parameters['username'], $parameters['password']);
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$this->active = mysql_select_db($parameters['database'], $this->dbConn);
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$this->database = $parameters['database'];
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if(!$this->dbConn) {
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$this->databaseError("Couldn't connect to MySQL database");
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}
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$this->query("SET sql_mode = 'ANSI'");
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parent::__construct();
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}
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/**
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* Not implemented, needed for PDO
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*/
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public function getConnect($parameters) {
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return null;
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}
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/**
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* Returns true if this database supports collations
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* @return boolean
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*/
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public function supportsCollations() {
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return $this->getVersion() >= 4.1;
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}
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/**
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* The version of MySQL.
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* @var float
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*/
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private $mysqlVersion;
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/**
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* Get the version of MySQL.
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* @return float
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*/
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public function getVersion() {
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if(!$this->mysqlVersion) {
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$this->mysqlVersion = (float)substr(trim(ereg_replace("([A-Za-z-])", "", $this->query("SELECT VERSION()")->value())), 0, 3);
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}
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return $this->mysqlVersion;
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}
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/**
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* Get the database server, namely mysql.
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* @return string
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*/
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public function getDatabaseServer() {
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return "mysql";
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}
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public function query($sql, $errorLevel = E_USER_ERROR) {
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if(isset($_REQUEST['previewwrite']) && in_array(strtolower(substr($sql,0,strpos($sql,' '))), array('insert','update','delete','replace'))) {
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Debug::message("Will execute: $sql");
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return;
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}
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if(isset($_REQUEST['showqueries'])) {
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$starttime = microtime(true);
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}
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$handle = mysql_query($sql, $this->dbConn);
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if(isset($_REQUEST['showqueries'])) {
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$endtime = round(microtime(true) - $starttime,4);
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Debug::message("\n$sql\n{$endtime}ms\n", false);
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}
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if(!$handle && $errorLevel) $this->databaseError("Couldn't run query: $sql | " . mysql_error($this->dbConn), $errorLevel);
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return new MySQLQuery($this, $handle);
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}
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public function getGeneratedID($table) {
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return mysql_insert_id($this->dbConn);
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}
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/**
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* OBSOLETE: Get the ID for the next new record for the table.
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*
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* @var string $table The name od the table.
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* @return int
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*/
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public function getNextID($table) {
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user_error('getNextID is OBSOLETE (and will no longer work properly)', E_USER_WARNING);
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$result = $this->query("SELECT MAX(ID)+1 FROM \"$table\"")->value();
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return $result ? $result : 1;
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}
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public function isActive() {
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return $this->active ? true : false;
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}
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public function createDatabase() {
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$this->query("CREATE DATABASE $this->database");
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$this->query("USE $this->database");
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$this->tableList = $this->fieldList = $this->indexList = null;
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if(mysql_select_db($this->database, $this->dbConn)) {
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$this->active = true;
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return true;
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}
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}
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/**
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* Drop the database that this object is currently connected to.
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* Use with caution.
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*/
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public function dropDatabase() {
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$this->query("DROP DATABASE $this->database");
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}
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/**
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* Returns the name of the currently selected database
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*/
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public function currentDatabase() {
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return $this->database;
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}
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/**
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* Switches to the given database.
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* If the database doesn't exist, you should call createDatabase() after calling selectDatabase()
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*/
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public function selectDatabase($dbname) {
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$this->database = $dbname;
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if($this->databaseExists($this->database)) {
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if(mysql_select_db($this->database, $this->dbConn)) $this->active = true;
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}
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$this->tableList = $this->fieldList = $this->indexList = null;
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}
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/**
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* Returns true if the named database exists.
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*/
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public function databaseExists($name) {
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$SQL_name = Convert::raw2sql($name);
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return $this->query("SHOW DATABASES LIKE '$SQL_name'")->value() ? true : false;
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}
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public function createTable($tableName, $fields = null, $indexes = null) {
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$fieldSchemas = $indexSchemas = "";
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if($fields) foreach($fields as $k => $v) $fieldSchemas .= "\"$k\" $v,\n";
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if($indexes) foreach($indexes as $k => $v) $fieldSchemas .= $this->getIndexSqlDefinition($k, $v) . ",\n";
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$this->query("CREATE TABLE \"$tableName\" (
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ID int(11) not null auto_increment,
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$fieldSchemas
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$indexSchemas
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primary key (ID)
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) TYPE=MyISAM");
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}
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/**
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* Alter a table's schema.
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* @param $table The name of the table to alter
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* @param $newFields New fields, a map of field name => field schema
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* @param $newIndexes New indexes, a map of index name => index type
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* @param $alteredFields Updated fields, a map of field name => field schema
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* @param $alteredIndexes Updated indexes, a map of index name => index type
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*/
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public function alterTable($tableName, $newFields = null, $newIndexes = null, $alteredFields = null, $alteredIndexes = null) {
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$fieldSchemas = $indexSchemas = "";
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if($newFields) foreach($newFields as $k => $v) $alterList[] .= "ADD \"$k\" $v";
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if($newIndexes) foreach($newIndexes as $k => $v) $alterList[] .= "ADD " . $this->getIndexSqlDefinition($k, $v);
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if($alteredFields) foreach($alteredFields as $k => $v) $alterList[] .= "CHANGE \"$k\" \"$k\" $v";
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if($alteredIndexes) foreach($alteredIndexes as $k => $v) {
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$alterList[] .= "DROP INDEX \"$k\"";
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$alterList[] .= "ADD ". $this->getIndexSqlDefinition($k, $v);
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}
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$alterations = implode(",\n", $alterList);
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$this->query("ALTER TABLE \"$tableName\" " . $alterations);
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}
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public function renameTable($oldTableName, $newTableName) {
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$this->query("ALTER TABLE \"$oldTableName\" RENAME \"$newTableName\"");
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}
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/**
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* Checks a table's integrity and repairs it if necessary.
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* @var string $tableName The name of the table.
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* @return boolean Return true if the table has integrity after the method is complete.
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*/
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public function checkAndRepairTable($tableName) {
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if(!$this->runTableCheckCommand("CHECK TABLE \"$tableName\"")) {
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Database::alteration_message("Table $tableName: repaired","repaired");
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return $this->runTableCheckCommand("REPAIR TABLE \"$tableName\" USE_FRM");
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} else {
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return true;
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}
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}
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/**
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* Helper function used by checkAndRepairTable.
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* @param string $sql Query to run.
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* @return boolean Returns if the query returns a successful result.
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*/
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protected function runTableCheckCommand($sql) {
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$testResults = $this->query($sql);
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foreach($testResults as $testRecord) {
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if(strtolower($testRecord['Msg_text']) != 'ok') {
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return false;
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}
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}
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return true;
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}
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public function createField($tableName, $fieldName, $fieldSpec) {
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$this->query("ALTER TABLE \"$tableName\" ADD \"$fieldName\" $fieldSpec");
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}
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/**
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* Change the database type of the given field.
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* @param string $tableName The name of the tbale the field is in.
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* @param string $fieldName The name of the field to change.
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* @param string $fieldSpec The new field specification
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*/
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public function alterField($tableName, $fieldName, $fieldSpec) {
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$this->query("ALTER TABLE \"$tableName\" CHANGE \"$fieldName\" \"$fieldName\" $fieldSpec");
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}
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/**
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* Change the database column name of the given field.
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*
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* @param string $tableName The name of the tbale the field is in.
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* @param string $oldName The name of the field to change.
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* @param string $newName The new name of the field
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*/
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public function renameField($tableName, $oldName, $newName) {
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$fieldList = $this->fieldList($tableName);
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if(array_key_exists($oldName, $fieldList)) {
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$this->query("ALTER TABLE \"$tableName\" CHANGE \"$oldName\" \"$newName\" " . $fieldList[$oldName]);
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}
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}
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public function fieldList($table) {
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$fields = DB::query("SHOW FULL FIELDS IN \"$table\"");
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foreach($fields as $field) {
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$fieldSpec = $field['Type'];
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if(!$field['Null'] || $field['Null'] == 'NO') {
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$fieldSpec .= ' not null';
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}
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if($field['Collation'] && $field['Collation'] != 'NULL') {
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$collInfo = DB::query("SHOW COLLATION LIKE '$field[Collation]'")->record();
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$fieldSpec .= " character set $collInfo[Charset] collate $field[Collation]";
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}
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if($field['Default'] || $field['Default'] === "0") {
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if(is_numeric($field['Default']))
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$fieldSpec .= " default " . addslashes($field['Default']);
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else
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$fieldSpec .= " default '" . addslashes($field['Default']) . "'";
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}
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if($field['Extra']) $fieldSpec .= " $field[Extra]";
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$fieldList[$field['Field']] = $fieldSpec;
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}
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return $fieldList;
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}
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/**
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* Create an index on a table.
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* @param string $tableName The name of the table.
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* @param string $indexName The name of the index.
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* @param string $indexSpec The specification of the index, see Database::requireIndex() for more details.
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*/
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public function createIndex($tableName, $indexName, $indexSpec) {
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$this->query("ALTER TABLE \"$tableName\" ADD " . $this->getIndexSqlDefinition($indexName, $indexSpec));
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}
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/*
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* This takes the index spec which has been provided by a class (ie static $indexes = blah blah)
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* and turns it into a proper string.
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* Some indexes may be arrays, such as fulltext and unique indexes, and this allows database-specific
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* arrays to be created.
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*/
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public function convertIndexSpec($indexSpec){
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if(is_array($indexSpec)){
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//Here we create a db-specific version of whatever index we need to create.
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switch($indexSpec['type']){
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case 'fulltext':
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$indexSpec='fulltext (' . str_replace(' ', '', $indexSpec['value']) . ')';
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break;
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case 'unique':
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$indexSpec='unique (' . $indexSpec['value'] . ')';
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break;
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}
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}
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return $indexSpec;
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}
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protected function getIndexSqlDefinition($indexName, $indexSpec) {
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$indexSpec=$this->convertIndexSpec($indexSpec);
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$indexSpec = trim($indexSpec);
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if($indexSpec[0] != '(') list($indexType, $indexFields) = explode(' ',$indexSpec,2);
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else $indexFields = $indexSpec;
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if(!isset($indexType)) {
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$indexType = "index";
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}
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return "$indexType \"$indexName\" $indexFields";
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}
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/**
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* Alter an index on a table.
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* @param string $tableName The name of the table.
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* @param string $indexName The name of the index.
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* @param string $indexSpec The specification of the index, see Database::requireIndex() for more details.
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*/
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public function alterIndex($tableName, $indexName, $indexSpec) {
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$indexSpec=$this->convertIndexSpec($indexSpec);
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$indexSpec = trim($indexSpec);
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if($indexSpec[0] != '(') {
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list($indexType, $indexFields) = explode(' ',$indexSpec,2);
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} else {
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$indexFields = $indexSpec;
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}
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if(!$indexType) {
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$indexType = "index";
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}
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$this->query("ALTER TABLE \"$tableName\" DROP INDEX \"$indexName\"");
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$this->query("ALTER TABLE \"$tableName\" ADD $indexType \"$indexName\" $indexFields");
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}
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/**
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* Return the list of indexes in a table.
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* @param string $table The table name.
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* @return array
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*/
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public function indexList($table) {
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$indexes = DB::query("SHOW INDEXES IN \"$table\"");
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foreach($indexes as $index) {
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$groupedIndexes[$index['Key_name']]['fields'][$index['Seq_in_index']] = $index['Column_name'];
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if($index['Index_type'] == 'FULLTEXT') {
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$groupedIndexes[$index['Key_name']]['type'] = 'fulltext ';
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} else if(!$index['Non_unique']) {
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$groupedIndexes[$index['Key_name']]['type'] = 'unique ';
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} else {
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$groupedIndexes[$index['Key_name']]['type'] = '';
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}
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}
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foreach($groupedIndexes as $index => $details) {
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ksort($details['fields']);
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$indexList[$index] = $details['type'] . '(' . implode(',',$details['fields']) . ')';
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}
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return $indexList;
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}
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/**
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* Returns a list of all the tables in the database.
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* Table names will all be in lowercase.
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* @return array
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*/
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public function tableList() {
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$tables = array();
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foreach($this->query("SHOW TABLES") as $record) {
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$table = strtolower(reset($record));
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$tables[$table] = $table;
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}
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return $tables;
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}
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/**
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* Return the number of rows affected by the previous operation.
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* @return int
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*/
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public function affectedRows() {
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return mysql_affected_rows($this->dbConn);
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}
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function databaseError($msg, $errorLevel = E_USER_ERROR) {
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// try to extract and format query
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if(preg_match('/Couldn\'t run query: ([^\|]*)\|\s*(.*)/', $msg, $matches)) {
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$formatter = new SQLFormatter();
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$msg = "Couldn't run query: \n" . $formatter->formatPlain($matches[1]) . "\n\n" . $matches[2];
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}
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user_error($msg, $errorLevel);
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}
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/**
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* Return a boolean type-formatted string
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*
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* @params array $values Contains a tokenised list of info about this data type
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* @return string
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*/
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public function boolean($values){
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//For reference, this is what typically gets passed to this function:
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//$parts=Array('datatype'=>'tinyint', 'precision'=>1, 'sign'=>'unsigned', 'null'=>'not null', 'default'=>$this->default);
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//DB::requireField($this->tableName, $this->name, "tinyint(1) unsigned not null default '{$this->defaultVal}'");
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return 'tinyint(1) unsigned not null default ' . (int)$values['default'];
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}
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/**
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* Return a date type-formatted string
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* For MySQL, we simply return the word 'date', no other parameters are necessary
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*
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* @params array $values Contains a tokenised list of info about this data type
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* @return string
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*/
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public function date($values){
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//For reference, this is what typically gets passed to this function:
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//$parts=Array('datatype'=>'date');
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//DB::requireField($this->tableName, $this->name, "date");
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return 'date';
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}
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/**
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* Return a decimal type-formatted string
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*
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* @params array $values Contains a tokenised list of info about this data type
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* @return string
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*/
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public function decimal($values){
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//For reference, this is what typically gets passed to this function:
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//$parts=Array('datatype'=>'decimal', 'precision'=>"$this->wholeSize,$this->decimalSize");
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//DB::requireField($this->tableName, $this->name, "decimal($this->wholeSize,$this->decimalSize)");
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return 'decimal(' . (int)$values['precision'] . ')';
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}
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/**
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* Return a enum type-formatted string
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*
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* @params array $values Contains a tokenised list of info about this data type
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* @return string
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*/
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public function enum($values){
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//For reference, this is what typically gets passed to this function:
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//$parts=Array('datatype'=>'enum', 'enums'=>$this->enum, 'character set'=>'utf8', 'collate'=> 'utf8_general_ci', 'default'=>$this->default);
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//DB::requireField($this->tableName, $this->name, "enum('" . implode("','", $this->enum) . "') character set utf8 collate utf8_general_ci default '{$this->default}'");
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return 'enum(\'' . implode('\',\'', $values['enums']) . '\') character set utf8 collate utf8_general_ci default \'' . $values['default'] . '\'';
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}
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/**
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* Return a float type-formatted string
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* For MySQL, we simply return the word 'date', no other parameters are necessary
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*
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* @params array $values Contains a tokenised list of info about this data type
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* @return string
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*/
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public function float($values){
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//For reference, this is what typically gets passed to this function:
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//$parts=Array('datatype'=>'float');
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//DB::requireField($this->tableName, $this->name, "float");
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return 'float';
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}
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/**
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* Return a int type-formatted string
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*
|
|
* @params array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function int($values){
|
|
//For reference, this is what typically gets passed to this function:
|
|
//$parts=Array('datatype'=>'int', 'precision'=>11, 'null'=>'not null', 'default'=>(int)$this->default);
|
|
//DB::requireField($this->tableName, $this->name, "int(11) not null default '{$this->defaultVal}'");
|
|
|
|
return 'int(11) not null default ' . (int)$values['default'];
|
|
}
|
|
|
|
/**
|
|
* Return a datetime type-formatted string
|
|
* For MySQL, we simply return the word 'datetime', no other parameters are necessary
|
|
*
|
|
* @params array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function ssdatetime($values){
|
|
//For reference, this is what typically gets passed to this function:
|
|
//$parts=Array('datatype'=>'datetime');
|
|
//DB::requireField($this->tableName, $this->name, $values);
|
|
|
|
return 'datetime';
|
|
}
|
|
|
|
/**
|
|
* Return a text type-formatted string
|
|
*
|
|
* @params array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function text($values){
|
|
//For reference, this is what typically gets passed to this function:
|
|
//$parts=Array('datatype'=>'mediumtext', 'character set'=>'utf8', 'collate'=>'utf8_general_ci');
|
|
//DB::requireField($this->tableName, $this->name, "mediumtext character set utf8 collate utf8_general_ci");
|
|
|
|
return 'mediumtext character set utf8 collate utf8_general_ci';
|
|
}
|
|
|
|
/**
|
|
* Return a time type-formatted string
|
|
* For MySQL, we simply return the word 'time', no other parameters are necessary
|
|
*
|
|
* @params array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function time($values){
|
|
//For reference, this is what typically gets passed to this function:
|
|
//$parts=Array('datatype'=>'time');
|
|
//DB::requireField($this->tableName, $this->name, "time");
|
|
|
|
return 'time';
|
|
}
|
|
|
|
/**
|
|
* Return a varchar type-formatted string
|
|
*
|
|
* @params array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function varchar($values){
|
|
//For reference, this is what typically gets passed to this function:
|
|
//$parts=Array('datatype'=>'varchar', 'precision'=>$this->size, 'character set'=>'utf8', 'collate'=>'utf8_general_ci');
|
|
//DB::requireField($this->tableName, $this->name, "varchar($this->size) character set utf8 collate utf8_general_ci");
|
|
|
|
return 'varchar(' . $values['precision'] . ') character set utf8 collate utf8_general_ci';
|
|
}
|
|
|
|
/**
|
|
* Returns true if the given table is exists in the current database
|
|
* NOTE: Experimental; introduced for db-abstraction and may changed before 2.4 is released.
|
|
*/
|
|
public function hasTable($table) {
|
|
$SQL_table = Convert::raw2sql($table);
|
|
return (bool)($this->query("SHOW TABLES LIKE '$SQL_table'")->value());
|
|
}
|
|
|
|
/**
|
|
* Returns the values of the given enum field
|
|
* NOTE: Experimental; introduced for db-abstraction and may changed before 2.4 is released.
|
|
*/
|
|
public function enumValuesForField($tableName, $fieldName) {
|
|
// Get the enum of all page types from the SiteTree table
|
|
$classnameinfo = DB::query("DESCRIBE \"$tableName\" \"$fieldName\"")->first();
|
|
preg_match_all("/'[^,]+'/", $classnameinfo["Type"], $matches);
|
|
|
|
foreach($matches[0] as $value) {
|
|
$classes[] = trim($value, "'");
|
|
}
|
|
return $classes;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* A result-set from a MySQL database.
|
|
* @package sapphire
|
|
* @subpackage model
|
|
*/
|
|
class MySQLQuery extends Query {
|
|
/**
|
|
* The MySQLDatabase object that created this result set.
|
|
* @var MySQLDatabase
|
|
*/
|
|
private $database;
|
|
|
|
/**
|
|
* The internal MySQL handle that points to the result set.
|
|
* @var resource
|
|
*/
|
|
private $handle;
|
|
|
|
/**
|
|
* Hook the result-set given into a Query class, suitable for use by sapphire.
|
|
* @param database The database object that created this query.
|
|
* @param handle the internal mysql handle that is points to the resultset.
|
|
*/
|
|
public function __construct(MySQLDatabase $database, $handle) {
|
|
$this->database = $database;
|
|
$this->handle = $handle;
|
|
parent::__construct();
|
|
}
|
|
|
|
public function __destroy() {
|
|
mysql_free_result($this->handle);
|
|
}
|
|
|
|
public function seek($row) {
|
|
return mysql_data_seek($this->handle, $row);
|
|
}
|
|
|
|
public function numRecords() {
|
|
return mysql_num_rows($this->handle);
|
|
}
|
|
|
|
public function nextRecord() {
|
|
// Coalesce rather than replace common fields.
|
|
if($data = mysql_fetch_row($this->handle)) {
|
|
foreach($data as $columnIdx => $value) {
|
|
$columnName = mysql_field_name($this->handle, $columnIdx);
|
|
// $value || !$ouput[$columnName] means that the *last* occurring value is shown
|
|
// !$ouput[$columnName] means that the *first* occurring value is shown
|
|
if(isset($value) || !isset($output[$columnName])) {
|
|
$output[$columnName] = $value;
|
|
}
|
|
}
|
|
return $output;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
}
|
|
|
|
?>
|