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MySQLDatabase.php
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MySQLDatabase.php
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<?php
/**
* MySQL connector class.
*
* Supported indexes for {@link requireTable()}:
*
* @package framework
* @subpackage model
*/
class MySQLDatabase extends SS_Database {
/**
* Connection to the DBMS.
* @var resource
*/
private $dbConn;
/**
* True if we are connected to a database.
* @var boolean
*/
private $active;
/**
* The name of the database.
* @var string
*/
private $database;
private static $connection_charset = null;
private $supportsTransactions = true;
/**
* Sets the character set for the MySQL database connection.
*
* The character set connection should be set to 'utf8' for SilverStripe version 2.4.0 and
* later.
*
* However, sites created before version 2.4.0 should leave this unset or data that isn't 7-bit
* safe will be corrupted. As such, the installer comes with this set in mysite/_config.php by
* default in versions 2.4.0 and later.
*/
public static function set_connection_charset($charset = 'utf8') {
self::$connection_charset = $charset;
}
/**
* Connect to a MySQL database.
* @param array $parameters An map of parameters, which should include:
* - server: The server, eg, localhost
* - username: The username to log on with
* - password: The password to log on with
* - database: The database to connect to
* - timezone: (optional) The timezone offset. For example: +12:00, "Pacific/Auckland", or "SYSTEM"
*/
public function __construct($parameters) {
$this->dbConn = new MySQLi($parameters['server'], $parameters['username'], $parameters['password']);
if($this->dbConn->connect_error) {
$this->databaseError("Couldn't connect to MySQL database | " . $this->dbConn->connect_error);
}
$this->query("SET sql_mode = 'ANSI'");
if(self::$connection_charset) {
$this->dbConn->set_charset(self::$connection_charset);
}
$this->active = $this->dbConn->select_db($parameters['database']);
$this->database = $parameters['database'];
if(isset($parameters['timezone'])) $this->query(sprintf("SET SESSION time_zone = '%s'", $parameters['timezone']));
}
/**
* Not implemented, needed for PDO
*/
public function getConnect($parameters) {
return null;
}
/**
* Returns true if this database supports collations
* @return boolean
*/
public function supportsCollations() {
return true;
}
public function supportsTimezoneOverride() {
return true;
}
/**
* Get the version of MySQL.
* @return string
*/
public function getVersion() {
return $this->dbConn->server_info;
}
/**
* Get the database server, namely mysql.
* @return string
*/
public function getDatabaseServer() {
return "mysql";
}
public function query($sql, $errorLevel = E_USER_ERROR) {
if(isset($_REQUEST['previewwrite']) && in_array(strtolower(substr($sql,0,strpos($sql,' '))), array('insert','update','delete','replace'))) {
Debug::message("Will execute: $sql");
return;
}
if(isset($_REQUEST['showqueries']) && Director::isDev(true)) {
$starttime = microtime(true);
}
$handle = $this->dbConn->query($sql);
if(isset($_REQUEST['showqueries']) && Director::isDev(true)) {
$endtime = round(microtime(true) - $starttime,4);
Debug::message("\n$sql\n{$endtime}ms\n", false);
}
if(!$handle && $errorLevel) $this->databaseError("Couldn't run query: $sql | " . $this->dbConn->error, $errorLevel);
return new MySQLQuery($this, $handle);
}
public function getGeneratedID($table) {
return $this->dbConn->insert_id;
}
public function isActive() {
return $this->active ? true : false;
}
public function createDatabase() {
$this->query("CREATE DATABASE \"$this->database\"");
$this->query("USE \"$this->database\"");
$this->tableList = $this->fieldList = $this->indexList = null;
$this->active = $this->dbConn->select_db($this->database);
return $this->active;
}
/**
* Drop the database that this object is currently connected to.
* Use with caution.
*/
public function dropDatabase() {
$this->dropDatabaseByName($this->database);
}
/**
* Drop the database that this object is currently connected to.
* Use with caution.
*/
public function dropDatabaseByName($dbName) {
$this->query("DROP DATABASE \"$dbName\"");
}
/**
* Returns the name of the currently selected database
*/
public function currentDatabase() {
return $this->database;
}
/**
* Switches to the given database.
* If the database doesn't exist, you should call createDatabase() after calling selectDatabase()
*/
public function selectDatabase($dbname) {
$this->database = $dbname;
$this->tableList = $this->fieldList = $this->indexList = null;
$this->active = false;
if($this->databaseExists($this->database)) {
$this->active = $this->dbConn->select_db($this->database);
}
return $this->active;
}
/**
* Returns true if the named database exists.
*/
public function databaseExists($name) {
$SQL_name = Convert::raw2sql($name);
return $this->query("SHOW DATABASES LIKE '$SQL_name'")->value() ? true : false;
}
/**
* Returns a column
*/
public function allDatabaseNames() {
return $this->query("SHOW DATABASES")->column();
}
/**
* Create a new table.
* @param $tableName The name of the table
* @param $fields A map of field names to field types
* @param $indexes A map of indexes
* @param $options An map of additional options. The available keys are as follows:
* - 'MSSQLDatabase'/'MySQLDatabase'/'PostgreSQLDatabase' - database-specific options such as "engine" for MySQL.
* - 'temporary' - If true, then a temporary table will be created
* @return The table name generated. This may be different from the table name, for example with temporary tables.
*/
public function createTable($table, $fields = null, $indexes = null, $options = null, $advancedOptions = null) {
$fieldSchemas = $indexSchemas = "";
if(!empty($options[get_class($this)])) {
$addOptions = $options[get_class($this)];
} elseif(!empty($options[get_parent_class($this)])) {
$addOptions = $options[get_parent_class($this)];
} else {
$addOptions = "ENGINE=InnoDB";
}
if(!isset($fields['ID'])) $fields['ID'] = "int(11) not null auto_increment";
if($fields) foreach($fields as $k => $v) $fieldSchemas .= "\"$k\" $v,\n";
if($indexes) foreach($indexes as $k => $v) $indexSchemas .= $this->getIndexSqlDefinition($k, $v) . ",\n";
// Switch to "CREATE TEMPORARY TABLE" for temporary tables
$temporary = empty($options['temporary']) ? "" : "TEMPORARY";
$this->query("CREATE $temporary TABLE \"$table\" (
$fieldSchemas
$indexSchemas
primary key (ID)
) {$addOptions}");
return $table;
}
/**
* Alter a table's schema.
* @param $table The name of the table to alter
* @param $newFields New fields, a map of field name => field schema
* @param $newIndexes New indexes, a map of index name => index type
* @param $alteredFields Updated fields, a map of field name => field schema
* @param $alteredIndexes Updated indexes, a map of index name => index type
* @param $alteredOptions
*/
public function alterTable($tableName, $newFields = null, $newIndexes = null, $alteredFields = null, $alteredIndexes = null, $alteredOptions = null, $advancedOptions = null) {
if($this->isView($tableName)) {
DB::alteration_message(
sprintf("Table %s not changed as it is a view", $tableName),
"changed"
);
return;
}
$fieldSchemas = $indexSchemas = "";
$alterList = array();
if($newFields) foreach($newFields as $k => $v) $alterList[] .= "ADD \"$k\" $v";
if($newIndexes) foreach($newIndexes as $k => $v) $alterList[] .= "ADD " . $this->getIndexSqlDefinition($k, $v);
if($alteredFields) foreach($alteredFields as $k => $v) $alterList[] .= "CHANGE \"$k\" \"$k\" $v";
if($alteredIndexes) foreach($alteredIndexes as $k => $v) {
$alterList[] .= "DROP INDEX \"$k\"";
$alterList[] .= "ADD ". $this->getIndexSqlDefinition($k, $v);
}
if($alteredOptions && isset($alteredOptions[get_class($this)])) {
if(!isset($this->indexList[$tableName])) {
$this->indexList[$tableName] = $this->indexList($tableName);
}
$skip = false;
foreach($this->indexList[$tableName] as $index) {
if(strpos($index, 'fulltext ') === 0) {
$skip = true;
break;
}
}
if($skip) {
DB::alteration_message(
sprintf("Table %s options not changed to %s due to fulltextsearch index", $tableName, $alteredOptions[get_class($this)]),
"changed"
);
} else {
$this->query(sprintf("ALTER TABLE \"%s\" %s", $tableName, $alteredOptions[get_class($this)]));
DB::alteration_message(
sprintf("Table %s options changed: %s", $tableName, $alteredOptions[get_class($this)]),
"changed"
);
}
}
$alterations = implode(",\n", $alterList);
$this->query("ALTER TABLE \"$tableName\" $alterations");
}
public function isView($tableName) {
$info = $this->query("SHOW /*!50002 FULL*/ TABLES LIKE '$tableName'")->record();
return $info && strtoupper($info['Table_type']) == 'VIEW';
}
public function renameTable($oldTableName, $newTableName) {
$this->query("ALTER TABLE \"$oldTableName\" RENAME \"$newTableName\"");
}
/**
* Checks a table's integrity and repairs it if necessary.
* @var string $tableName The name of the table.
* @return boolean Return true if the table has integrity after the method is complete.
*/
public function checkAndRepairTable($tableName) {
if(!$this->runTableCheckCommand("CHECK TABLE \"$tableName\"")) {
if($this->runTableCheckCommand("CHECK TABLE \"".strtolower($tableName)."\"")){
DB::alteration_message("Table $tableName: renamed from lowercase","repaired");
return $this->renameTable(strtolower($tableName),$tableName);
}
DB::alteration_message("Table $tableName: repaired","repaired");
return $this->runTableCheckCommand("REPAIR TABLE \"$tableName\" USE_FRM");
} else {
return true;
}
}
/**
* Helper function used by checkAndRepairTable.
* @param string $sql Query to run.
* @return boolean Returns if the query returns a successful result.
*/
protected function runTableCheckCommand($sql) {
$testResults = $this->query($sql);
foreach($testResults as $testRecord) {
if(strtolower($testRecord['Msg_text']) != 'ok') {
return false;
}
}
return true;
}
public function createField($tableName, $fieldName, $fieldSpec) {
$this->query("ALTER TABLE \"$tableName\" ADD \"$fieldName\" $fieldSpec");
}
/**
* Change the database type of the given field.
* @param string $tableName The name of the tbale the field is in.
* @param string $fieldName The name of the field to change.
* @param string $fieldSpec The new field specification
*/
public function alterField($tableName, $fieldName, $fieldSpec) {
$this->query("ALTER TABLE \"$tableName\" CHANGE \"$fieldName\" \"$fieldName\" $fieldSpec");
}
/**
* Change the database column name of the given field.
*
* @param string $tableName The name of the tbale the field is in.
* @param string $oldName The name of the field to change.
* @param string $newName The new name of the field
*/
public function renameField($tableName, $oldName, $newName) {
$fieldList = $this->fieldList($tableName);
if(array_key_exists($oldName, $fieldList)) {
$this->query("ALTER TABLE \"$tableName\" CHANGE \"$oldName\" \"$newName\" " . $fieldList[$oldName]);
}
}
private static $_cache_collation_info = array();
public function fieldList($table) {
$fields = DB::query("SHOW FULL FIELDS IN \"$table\"");
foreach($fields as $field) {
// ensure that '' is converted to \' in field specification (mostly for the benefit of ENUM values)
$fieldSpec = str_replace('\'\'', '\\\'', $field['Type']);
if(!$field['Null'] || $field['Null'] == 'NO') {
$fieldSpec .= ' not null';
}
if($field['Collation'] && $field['Collation'] != 'NULL') {
// Cache collation info to cut down on database traffic
if(!isset(self::$_cache_collation_info[$field['Collation']])) {
self::$_cache_collation_info[$field['Collation']] = DB::query("SHOW COLLATION LIKE '$field[Collation]'")->record();
}
$collInfo = self::$_cache_collation_info[$field['Collation']];
$fieldSpec .= " character set $collInfo[Charset] collate $field[Collation]";
}
if($field['Default'] || $field['Default'] === "0") {
if(is_numeric($field['Default']))
$fieldSpec .= " default " . Convert::raw2sql($field['Default']);
else
$fieldSpec .= " default '" . Convert::raw2sql($field['Default']) . "'";
}
if($field['Extra']) $fieldSpec .= " $field[Extra]";
$fieldList[$field['Field']] = $fieldSpec;
}
return $fieldList;
}
/**
* Create an index on a table.
*
* @param string $tableName The name of the table.
* @param string $indexName The name of the index.
* @param string $indexSpec The specification of the index, see {@link SS_Database::requireIndex()} for more details.
*/
public function createIndex($tableName, $indexName, $indexSpec) {
$this->query("ALTER TABLE \"$tableName\" ADD " . $this->getIndexSqlDefinition($indexName, $indexSpec));
}
/**
* This takes the index spec which has been provided by a class (ie static $indexes = blah blah)
* and turns it into a proper string.
* Some indexes may be arrays, such as fulltext and unique indexes, and this allows database-specific
* arrays to be created. See {@link requireTable()} for details on the index format.
*
* @see http://dev.mysql.com/doc/refman/5.0/en/create-index.html
*
* @param string|array $indexSpec
* @return string MySQL compatible ALTER TABLE syntax
*/
public function convertIndexSpec($indexSpec){
if(is_array($indexSpec)){
//Here we create a db-specific version of whatever index we need to create.
switch($indexSpec['type']){
case 'fulltext':
$indexSpec='fulltext (' . str_replace(' ', '', $indexSpec['value']) . ')';
break;
case 'unique':
$indexSpec='unique (' . $indexSpec['value'] . ')';
break;
case 'btree':
case 'index':
$indexSpec='using btree (' . $indexSpec['value'] . ')';
break;
case 'hash':
$indexSpec='using hash (' . $indexSpec['value'] . ')';
break;
}
}
return $indexSpec;
}
/**
* @param string $indexName
* @param string|array $indexSpec See {@link requireTable()} for details
* @return string MySQL compatible ALTER TABLE syntax
*/
protected function getIndexSqlDefinition($indexName, $indexSpec=null) {
$indexSpec=$this->convertIndexSpec($indexSpec);
$indexSpec = trim($indexSpec);
if($indexSpec[0] != '(') list($indexType, $indexFields) = explode(' ',$indexSpec,2);
else $indexFields = $indexSpec;
if(!isset($indexType))
$indexType = "index";
if($indexType=='using')
return "index \"$indexName\" using $indexFields";
else {
return "$indexType \"$indexName\" $indexFields";
}
}
/**
* MySQL does not need any transformations done on the index that's created, so we can just return it as-is
*/
public function getDbSqlDefinition($tableName, $indexName, $indexSpec){
return $indexName;
}
/**
* Alter an index on a table.
* @param string $tableName The name of the table.
* @param string $indexName The name of the index.
* @param string $indexSpec The specification of the index, see {@link SS_Database::requireIndex()} for more details.
*/
public function alterIndex($tableName, $indexName, $indexSpec) {
$indexSpec=$this->convertIndexSpec($indexSpec);
$indexSpec = trim($indexSpec);
if($indexSpec[0] != '(') {
list($indexType, $indexFields) = explode(' ',$indexSpec,2);
} else {
$indexFields = $indexSpec;
}
if(!$indexType) {
$indexType = "index";
}
$this->query("ALTER TABLE \"$tableName\" DROP INDEX \"$indexName\"");
$this->query("ALTER TABLE \"$tableName\" ADD $indexType \"$indexName\" $indexFields");
}
/**
* Return the list of indexes in a table.
* @param string $table The table name.
* @return array
*/
public function indexList($table) {
$indexes = DB::query("SHOW INDEXES IN \"$table\"");
$groupedIndexes = array();
$indexList = array();
foreach($indexes as $index) {
$groupedIndexes[$index['Key_name']]['fields'][$index['Seq_in_index']] = $index['Column_name'];
if($index['Index_type'] == 'FULLTEXT') {
$groupedIndexes[$index['Key_name']]['type'] = 'fulltext ';
} else if(!$index['Non_unique']) {
$groupedIndexes[$index['Key_name']]['type'] = 'unique ';
} else if($index['Index_type'] =='HASH') {
$groupedIndexes[$index['Key_name']]['type'] = 'hash ';
} else if($index['Index_type'] =='RTREE') {
$groupedIndexes[$index['Key_name']]['type'] = 'rtree ';
} else {
$groupedIndexes[$index['Key_name']]['type'] = '';
}
}
if($groupedIndexes) {
foreach($groupedIndexes as $index => $details) {
ksort($details['fields']);
$indexList[$index] = $details['type'] . '("' . implode('","',$details['fields']) . '")';
}
}
return $indexList;
}
/**
* Returns a list of all the tables in the database.
* @return array
*/
public function tableList() {
$tables = array();
foreach($this->query("SHOW TABLES") as $record) {
$table = reset($record);
$tables[strtolower($table)] = $table;
}
return $tables;
}
/**
* Return the number of rows affected by the previous operation.
* @return int
*/
public function affectedRows() {
return $this->dbConn->affected_rows;
}
public function databaseError($msg, $errorLevel = E_USER_ERROR) {
// try to extract and format query
if(preg_match('/Couldn\'t run query: ([^\|]*)\|\s*(.*)/', $msg, $matches)) {
$formatter = new SQLFormatter();
$msg = "Couldn't run query: \n" . $formatter->formatPlain($matches[1]) . "\n\n" . $matches[2];
}
user_error($msg, $errorLevel);
}
/**
* Return a boolean type-formatted string
*
* @param array $values Contains a tokenised list of info about this data type
* @return string
*/
public function boolean($values){
//For reference, this is what typically gets passed to this function:
//$parts=Array('datatype'=>'tinyint', 'precision'=>1, 'sign'=>'unsigned', 'null'=>'not null', 'default'=>$this->default);
//DB::requireField($this->tableName, $this->name, "tinyint(1) unsigned not null default '{$this->defaultVal}'");
return 'tinyint(1) unsigned not null default ' . (int)$values['default'];
}
/**
* Return a date type-formatted string
* For MySQL, we simply return the word 'date', no other parameters are necessary
*
* @param array $values Contains a tokenised list of info about this data type
* @return string
*/
public function date($values){
//For reference, this is what typically gets passed to this function:
//$parts=Array('datatype'=>'date');
//DB::requireField($this->tableName, $this->name, "date");
return 'date';
}
/**
* Return a decimal type-formatted string
*
* @param array $values Contains a tokenised list of info about this data type
* @return string
*/
public function decimal($values){
//For reference, this is what typically gets passed to this function:
//$parts=Array('datatype'=>'decimal', 'precision'=>"$this->wholeSize,$this->decimalSize");
//DB::requireField($this->tableName, $this->name, "decimal($this->wholeSize,$this->decimalSize)");
// Avoid empty strings being put in the db
if($values['precision'] == '') {
$precision = 1;
} else {
$precision = $values['precision'];
}
$defaultValue = '';
if(isset($values['default']) && is_numeric($values['default'])) {
$decs = strpos($precision, ',') !== false ? (int)substr($precision, strpos($precision, ',')+1) : 0;
$defaultValue = ' default ' . number_format($values['default'], $decs, '.', '');
}
return 'decimal(' . $precision . ') not null' . $defaultValue;
}
/**
* Return a enum type-formatted string
*
* @param array $values Contains a tokenised list of info about this data type
* @return string
*/
public function enum($values){
//For reference, this is what typically gets passed to this function:
//$parts=Array('datatype'=>'enum', 'enums'=>$this->enum, 'character set'=>'utf8', 'collate'=> 'utf8_general_ci', 'default'=>$this->default);
//DB::requireField($this->tableName, $this->name, "enum('" . implode("','", $this->enum) . "') character set utf8 collate utf8_general_ci default '{$this->default}'");
return 'enum(\'' . implode('\',\'', $values['enums']) . '\') character set utf8 collate utf8_general_ci default \'' . $values['default'] . '\'';
}
/**
* Return a set type-formatted string
*
* @param array $values Contains a tokenised list of info about this data type
* @return string
*/
public function set($values){
//For reference, this is what typically gets passed to this function:
//$parts=Array('datatype'=>'enum', 'enums'=>$this->enum, 'character set'=>'utf8', 'collate'=> 'utf8_general_ci', 'default'=>$this->default);
//DB::requireField($this->tableName, $this->name, "enum('" . implode("','", $this->enum) . "') character set utf8 collate utf8_general_ci default '{$this->default}'");
$default = empty($values['default']) ? '' : " default '$values[default]'";
return 'set(\'' . implode('\',\'', $values['enums']) . '\') character set utf8 collate utf8_general_ci' . $default;
}
/**
* Return a float type-formatted string
* For MySQL, we simply return the word 'date', no other parameters are necessary
*
* @param array $values Contains a tokenised list of info about this data type
* @return string
*/
public function float($values){
//For reference, this is what typically gets passed to this function:
//$parts=Array('datatype'=>'float');
//DB::requireField($this->tableName, $this->name, "float");
return 'float not null default ' . $values['default'];
}
/**
* Return a int type-formatted string
*
* @param 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
*
* @param array $values Contains a tokenised list of info about this data type
* @return string
*/
public function ss_datetime($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
*
* @param 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
*
* @param 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
*
* @param 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(' . $values['precision'] . ') character set utf8 collate utf8_general_ci';
}
/*
* Return the MySQL-proprietary 'Year' datatype
*/
public function year($values){
return 'year(4)';
}
/**
* This returns the column which is the primary key for each table
* In Postgres, it is a SERIAL8, which is the equivalent of an auto_increment
*
* @return string
*/
public function IdColumn(){
return 'int(11) not null auto_increment';
}
/**
* Returns the SQL command to get all the tables in this database
*/
public function allTablesSQL(){
return "SHOW TABLES;";
}
/**
* 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);
$classes = array();
foreach($matches[0] as $value) {
$classes[] = stripslashes(trim($value, "'"));
}
return $classes;
}
/**
* The core search engine, used by this class and its subclasses to do fun stuff.
* Searches both SiteTree and File.
*
* @param string $keywords Keywords as a string.
*/
public function searchEngine($classesToSearch, $keywords, $start, $pageLength, $sortBy = "Relevance DESC", $extraFilter = "", $booleanSearch = false, $alternativeFileFilter = "", $invertedMatch = false) {
if(!class_exists('SiteTree')) throw new Exception('MySQLDatabase->searchEngine() requires "SiteTree" class');
if(!class_exists('File')) throw new Exception('MySQLDatabase->searchEngine() requires "File" class');
$fileFilter = '';
$keywords = Convert::raw2sql($keywords);
$htmlEntityKeywords = htmlentities($keywords, ENT_NOQUOTES, 'UTF-8');
$extraFilters = array('SiteTree' => '', 'File' => '');
if($booleanSearch) $boolean = "IN BOOLEAN MODE";
if($extraFilter) {
$extraFilters['SiteTree'] = " AND $extraFilter";
if($alternativeFileFilter) $extraFilters['File'] = " AND $alternativeFileFilter";
else $extraFilters['File'] = $extraFilters['SiteTree'];
}
// Always ensure that only pages with ShowInSearch = 1 can be searched
$extraFilters['SiteTree'] .= " AND ShowInSearch <> 0";
// File.ShowInSearch was added later, keep the database driver backwards compatible
// by checking for its existence first
$fields = $this->fieldList('File');
if(array_key_exists('ShowInSearch', $fields)) $extraFilters['File'] .= " AND ShowInSearch <> 0";
$limit = $start . ", " . (int) $pageLength;
$notMatch = $invertedMatch ? "NOT " : "";
if($keywords) {
$match['SiteTree'] = "
MATCH (Title, MenuTitle, Content, MetaDescription) AGAINST ('$keywords' $boolean)
+ MATCH (Title, MenuTitle, Content, MetaDescription) AGAINST ('$htmlEntityKeywords' $boolean)
";
$match['File'] = "MATCH (Filename, Title, Content) AGAINST ('$keywords' $boolean) AND ClassName = 'File'";
// We make the relevance search by converting a boolean mode search into a normal one
$relevanceKeywords = str_replace(array('*','+','-'),'',$keywords);
$htmlEntityRelevanceKeywords = str_replace(array('*','+','-'),'',$htmlEntityKeywords);
$relevance['SiteTree'] = "MATCH (Title, MenuTitle, Content, MetaDescription) AGAINST ('$relevanceKeywords') + MATCH (Title, MenuTitle, Content, MetaDescription) AGAINST ('$htmlEntityRelevanceKeywords')";
$relevance['File'] = "MATCH (Filename, Title, Content) AGAINST ('$relevanceKeywords')";
} else {
$relevance['SiteTree'] = $relevance['File'] = 1;
$match['SiteTree'] = $match['File'] = "1 = 1";
}
// Generate initial DataLists and base table names
$lists = array();
$baseClasses = array('SiteTree' => '', 'File' => '');
foreach($classesToSearch as $class) {
$lists[$class] = DataList::create($class)->where($notMatch . $match[$class] . $extraFilters[$class], "");
$baseClasses[$class] = '"'.$class.'"';
}
// Make column selection lists
$select = array(
'SiteTree' => array("ClassName","$baseClasses[SiteTree].\"ID\"","ParentID","Title","MenuTitle","URLSegment","Content","LastEdited","Created","Filename" => "_utf8''", "Name" => "_utf8''", "Relevance" => $relevance['SiteTree'], "CanViewType"),
'File' => array("ClassName","$baseClasses[File].\"ID\"","ParentID" => "_utf8''","Title","MenuTitle" => "_utf8''","URLSegment" => "_utf8''","Content","LastEdited","Created","Filename","Name", "Relevance" => $relevance['File'], "CanViewType" => "NULL"),
);
// Process and combine queries
$querySQLs = array();
$totalCount = 0;
foreach($lists as $class => $list) {
$query = $list->dataQuery()->query();
// There's no need to do all that joining
$query->setFrom(array(str_replace(array('"','`'), '', $baseClasses[$class]) => $baseClasses[$class]));
$query->setSelect($select[$class]);
$query->setOrderBy(array());
$querySQLs[] = $query->sql();
$totalCount += $query->unlimitedRowCount();
}
$fullQuery = implode(" UNION ", $querySQLs) . " ORDER BY $sortBy LIMIT $limit";
// Get records
$records = DB::query($fullQuery);
$objects = array();
foreach($records as $record) {
$objects[] = new $record['ClassName']($record);
}
$list = new PaginatedList(new ArrayList($objects));
$list->setPageStart($start);
$list->setPageLEngth($pageLength);
$list->setTotalItems($totalCount);
// The list has already been limited by the query above
$list->setLimitItems(false);
return $list;
}
/**
* MySQL uses NOW() to return the current date/time.
*/
public function now(){
return 'NOW()';
}
/*
* Returns the database-specific version of the random() function
*/
public function random(){
return 'RAND()';
}
/*
* This is a lookup table for data types.
* For instance, Postgres uses 'INT', while MySQL uses 'UNSIGNED'
* So this is a DB-specific list of equivilents.
*/
public function dbDataType($type){
$values=Array(
'unsigned integer'=>'UNSIGNED'
);
if(isset($values[$type]))
return $values[$type];
else return '';
}
/*
* This will return text which has been escaped in a database-friendly manner.
*/
public function addslashes($value){
return $this->dbConn->real_escape_string($value);
}
/*
* This changes the index name depending on database requirements.
* MySQL doesn't need any changes.
*/
public function modifyIndex($index){
return $index;
}
/**
* Returns a SQL fragment for querying a fulltext search index
* @param $fields array The list of field names to search on
* @param $keywords string The search query
* @param $booleanSearch A MySQL-specific flag to switch to boolean search
*/
public function fullTextSearchSQL($fields, $keywords, $booleanSearch = false) {
$boolean = $booleanSearch ? "IN BOOLEAN MODE" : "";
$fieldNames = '"' . implode('", "', $fields) . '"';
$SQL_keywords = Convert::raw2sql($keywords);
$SQL_htmlEntityKeywords = Convert::raw2sql(htmlentities($keywords, ENT_NOQUOTES, 'UTF-8'));
return "(MATCH ($fieldNames) AGAINST ('$SQL_keywords' $boolean) + MATCH ($fieldNames) AGAINST ('$SQL_htmlEntityKeywords' $boolean))";
}
/*
* Does this database support transactions?
*/
public function supportsTransactions(){
return $this->supportsTransactions;
}
/*
* This is a quick lookup to discover if the database supports particular extensions
* Currently, MySQL supports no extensions
*/
public function supportsExtensions($extensions=Array('partitions', 'tablespaces', 'clustering')){
if(isset($extensions['partitions']))
return false;
elseif(isset($extensions['tablespaces']))
return false;
elseif(isset($extensions['clustering']))
return false;
else
return false;
}
/*
* Start a prepared transaction
* See http://developer.postgresql.org/pgdocs/postgres/sql-set-transaction.html for details on transaction isolation options
*/
public function transactionStart($transaction_mode=false, $session_characteristics=false){
// This sets the isolation level for the NEXT transaction, not the current one.
if($transaction_mode) {
$this->query('SET TRANSACTION ' . $transaction_mode . ';');
}
$this->query('START TRANSACTION;');
if($session_characteristics) {
$this->query('SET SESSION TRANSACTION ' . $session_characteristics . ';');
}
}
/*
* Create a savepoint that you can jump back to if you encounter problems
*/
public function transactionSavepoint($savepoint){
$this->query("SAVEPOINT $savepoint;");
}
/*
* Rollback or revert to a savepoint if your queries encounter problems