1813 lines
56 KiB
PHP
1813 lines
56 KiB
PHP
<?php
|
|
/**
|
|
* Microsoft SQL Server 2008+ connector class.
|
|
*
|
|
* <h2>Connecting using Windows</h2>
|
|
*
|
|
* If you've got your website running on Windows, it's highly recommended you
|
|
* use Microsoft SQL Server Driver for PHP "sqlsrv".
|
|
*
|
|
* A complete guide to installing a Windows IIS + PHP + SQL Server web stack can be
|
|
* found here: http://doc.silverstripe.org/installation-on-windows-server-manual-iis
|
|
*
|
|
* @see http://sqlsrvphp.codeplex.com/
|
|
*
|
|
* <h2>Connecting using Linux or Mac OS X</h2>
|
|
*
|
|
* The following commands assume you used the default package manager
|
|
* to install PHP with the operating system.
|
|
*
|
|
* Debian, and Ubuntu:
|
|
* <code>apt-get install php5-sybase</code>
|
|
*
|
|
* Fedora, CentOS and RedHat:
|
|
* <code>yum install php-mssql</code>
|
|
*
|
|
* Mac OS X (MacPorts):
|
|
* <code>port install php5-mssql</code>
|
|
*
|
|
* These packages will install the mssql extension for PHP, as well
|
|
* as FreeTDS, which will let you connect to SQL Server.
|
|
*
|
|
* More information available in the SilverStripe developer wiki:
|
|
* @see http://doc.silverstripe.org/modules:mssql
|
|
* @see http://doc.silverstripe.org/installation-on-windows-server-manual-iis
|
|
*
|
|
* References:
|
|
* @see http://freetds.org
|
|
*
|
|
* @package mssql
|
|
*/
|
|
class MSSQLDatabase extends SS_Database {
|
|
|
|
/**
|
|
* Connection to the DBMS.
|
|
* @var resource
|
|
*/
|
|
protected $dbConn;
|
|
|
|
/**
|
|
* True if we are connected to a database.
|
|
* @var boolean
|
|
*/
|
|
protected $active;
|
|
|
|
/**
|
|
* The name of the database.
|
|
* @var string
|
|
*/
|
|
protected $database;
|
|
|
|
/**
|
|
* If true, use the mssql_... functions.
|
|
* If false use the sqlsrv_... functions
|
|
*/
|
|
protected $mssql = null;
|
|
|
|
/**
|
|
* Stores the affected rows of the last query.
|
|
* Used by sqlsrv functions only, as sqlsrv_rows_affected
|
|
* accepts a result instead of a database handle.
|
|
*/
|
|
protected $lastAffectedRows;
|
|
|
|
/**
|
|
* Words that will trigger an error if passed to a SQL Server fulltext search
|
|
*/
|
|
public static $noiseWords = array('about', '1', 'after', '2', 'all', 'also', '3', 'an', '4', 'and', '5', 'another', '6', 'any', '7', 'are', '8', 'as', '9', 'at', '0', 'be', '$', 'because', 'been', 'before', 'being', 'between', 'both', 'but', 'by', 'came', 'can', 'come', 'could', 'did', 'do', 'does', 'each', 'else', 'for', 'from', 'get', 'got', 'has', 'had', 'he', 'have', 'her', 'here', 'him', 'himself', 'his', 'how', 'if', 'in', 'into', 'is', 'it', 'its', 'just', 'like', 'make', 'many', 'me', 'might', 'more', 'most', 'much', 'must', 'my', 'never', 'no', 'now', 'of', 'on', 'only', 'or', 'other', 'our', 'out', 'over', 're', 'said', 'same', 'see', 'should', 'since', 'so', 'some', 'still', 'such', 'take', 'than', 'that', 'the', 'their', 'them', 'then', 'there', 'these', 'they', 'this', 'those', 'through', 'to', 'too', 'under', 'up', 'use', 'very', 'want', 'was', 'way', 'we', 'well', 'were', 'what', 'when', 'where', 'which', 'while', 'who', 'will', 'with', 'would', 'you', 'your', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z');
|
|
|
|
/**
|
|
* Transactions will work with FreeTDS, but not entirely with sqlsrv driver on Windows with MARS enabled.
|
|
* TODO:
|
|
* - after the test fails with open transaction, the transaction should be rolled back,
|
|
* otherwise other tests will break claiming that transaction is still open.
|
|
* - figure out SAVEPOINTS
|
|
* - READ ONLY transactions
|
|
*/
|
|
protected $supportsTransactions = true;
|
|
|
|
/**
|
|
* Cached flag to determine if full-text is enabled. This is set by
|
|
* {@link MSSQLDatabase::fullTextEnabled()}
|
|
*
|
|
* @var boolean
|
|
*/
|
|
protected $fullTextEnabled = null;
|
|
|
|
/**
|
|
* Stores per-request cached constraint checks that come from the database.
|
|
* @var array
|
|
*/
|
|
protected static $cached_checks = array();
|
|
|
|
/**
|
|
* @ignore
|
|
*/
|
|
protected static $collation = null;
|
|
|
|
/**
|
|
* Set the default collation of the MSSQL nvarchar fields that we create.
|
|
* We don't apply this to the database as a whole, so that we can use unicode collations.
|
|
*/
|
|
public static function set_collation($collation) {
|
|
self::$collation = $collation;
|
|
}
|
|
|
|
/**
|
|
* Connect to a MS SQL database.
|
|
* @param array $parameters An map of parameters, which should include:
|
|
* - server: The server, eg, localhost
|
|
* - username: The username to log on with
|
|
* - password: The password to log on with
|
|
* - database: The database to connect to
|
|
*/
|
|
public function __construct($parameters) {
|
|
if(function_exists('mssql_connect')) {
|
|
$this->mssql = true;
|
|
} else if(function_exists('sqlsrv_connect')) {
|
|
$this->mssql = false;
|
|
} else {
|
|
user_error("Neither the mssql_connect() nor the sqlsrv_connect() functions are available. Please install the PHP native mssql module, or the Microsoft-provided sqlsrv module.", E_USER_ERROR);
|
|
}
|
|
|
|
if($this->mssql) {
|
|
// Switch to utf8 connection charset
|
|
ini_set('mssql.charset', 'utf8');
|
|
$this->dbConn = mssql_connect($parameters['server'], $parameters['username'], $parameters['password'], true);
|
|
} else {
|
|
// Disable default warnings as errors behaviour for sqlsrv to keep it in line with mssql functions
|
|
if(ini_get('sqlsrv.WarningsReturnAsErrors')) {
|
|
ini_set('sqlsrv.WarningsReturnAsErrors', 'Off');
|
|
}
|
|
|
|
$options = array(
|
|
'CharacterSet' => 'UTF-8',
|
|
'MultipleActiveResultSets' => true
|
|
);
|
|
if(!(defined('MSSQL_USE_WINDOWS_AUTHENTICATION') && MSSQL_USE_WINDOWS_AUTHENTICATION == true)) {
|
|
$options['UID'] = $parameters['username'];
|
|
$options['PWD'] = $parameters['password'];
|
|
}
|
|
|
|
$this->dbConn = sqlsrv_connect($parameters['server'], $options);
|
|
}
|
|
|
|
if(!$this->dbConn) {
|
|
$this->databaseError('Couldn\'t connect to SQL Server database');
|
|
} else {
|
|
$this->database = $parameters['database'];
|
|
$this->selectDatabase($this->database);
|
|
|
|
// Configure the connection
|
|
$this->query('SET QUOTED_IDENTIFIER ON');
|
|
$this->query('SET TEXTSIZE 2147483647');
|
|
}
|
|
}
|
|
|
|
public function __destruct() {
|
|
if(is_resource($this->dbConn)) {
|
|
if($this->mssql) {
|
|
mssql_close($this->dbConn);
|
|
} else {
|
|
sqlsrv_close($this->dbConn);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Checks whether the current SQL Server version has full-text
|
|
* support installed and full-text is enabled for this database.
|
|
*
|
|
* @return boolean
|
|
*/
|
|
public function fullTextEnabled() {
|
|
if($this->fullTextEnabled === null) {
|
|
$isInstalled = (boolean) DB::query("SELECT fulltextserviceproperty('isfulltextinstalled')")->value();
|
|
$enabledForDb = (boolean) DB::query("
|
|
SELECT is_fulltext_enabled
|
|
FROM sys.databases
|
|
WHERE name = '$this->database'
|
|
")->value();
|
|
$this->fullTextEnabled = (boolean) ($isInstalled && $enabledForDb);
|
|
}
|
|
return $this->fullTextEnabled;
|
|
}
|
|
|
|
/**
|
|
* Throw a database error
|
|
*/
|
|
function databaseError($message, $errorLevel = E_USER_ERROR) {
|
|
if(!$this->mssql) {
|
|
$errorMessages = array();
|
|
$errors = sqlsrv_errors();
|
|
if ($errors) foreach($errors as $error) {
|
|
$errorMessages[] = $error['message'];
|
|
}
|
|
$message .= ": \n" . implode("; ",$errorMessages);
|
|
}
|
|
|
|
return parent::databaseError($message, $errorLevel);
|
|
}
|
|
|
|
/**
|
|
* This will set up the full text search capabilities.
|
|
*/
|
|
function createFullTextCatalog() {
|
|
$result = $this->fullTextCatalogExists();
|
|
if(!$result) $this->query('CREATE FULLTEXT CATALOG "ftCatalog" AS DEFAULT;');
|
|
}
|
|
|
|
/**
|
|
* Check that a fulltext catalog has been created yet.
|
|
* @return boolean
|
|
*/
|
|
public function fullTextCatalogExists() {
|
|
return (bool) $this->query("SELECT name FROM sys.fulltext_catalogs WHERE name = 'ftCatalog';")->value();
|
|
}
|
|
|
|
/**
|
|
* Sleep until the catalog has been fully rebuilt. This is a busy wait designed for situations
|
|
* when you need to be sure the index is up to date - for example in unit tests.
|
|
*
|
|
* TODO: move this to Database class? Can we assume this will be useful for all databases?
|
|
* Also see the wrapper functions "waitUntilIndexingFinished" in SearchFormTest and TranslatableSearchFormTest
|
|
*
|
|
* @param int $maxWaitingTime Time in seconds to wait for the database.
|
|
*/
|
|
function waitUntilIndexingFinished($maxWaitingTime = 15) {
|
|
if($this->fullTextEnabled()) {
|
|
$this->query("EXEC sp_fulltext_catalog 'ftCatalog', 'Rebuild';");
|
|
|
|
// Busy wait until it's done updating, but no longer than 15 seconds.
|
|
$start = time();
|
|
while(time()-$start<$maxWaitingTime) {
|
|
$status = $this->query("EXEC sp_help_fulltext_catalogs 'ftCatalog';")->first();
|
|
|
|
if (isset($status['STATUS']) && $status['STATUS']==0) {
|
|
// Idle!
|
|
break;
|
|
}
|
|
sleep(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Not implemented, needed for PDO
|
|
*/
|
|
public function getConnect($parameters) {
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Returns true if this database supports collations
|
|
* @return boolean
|
|
*/
|
|
public function supportsCollations() {
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Get the version of MSSQL.
|
|
* @return string
|
|
*/
|
|
public function getVersion() {
|
|
return trim($this->query("SELECT CONVERT(char(15), SERVERPROPERTY('ProductVersion'))")->value());
|
|
}
|
|
|
|
/**
|
|
* Get the database server, namely mssql.
|
|
* @return string
|
|
*/
|
|
public function getDatabaseServer() {
|
|
return "mssql";
|
|
}
|
|
|
|
public function query($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'])) {
|
|
$starttime = microtime(true);
|
|
}
|
|
|
|
$error = '';
|
|
if($this->mssql) {
|
|
$handle = mssql_query($sql, $this->dbConn);
|
|
$error = mssql_get_last_message();
|
|
} else {
|
|
$handle = sqlsrv_query($this->dbConn, $sql);
|
|
if($handle) $this->lastAffectedRows = sqlsrv_rows_affected($handle);
|
|
if(function_exists('sqlsrv_errors')) {
|
|
$errInfo = sqlsrv_errors();
|
|
if($errInfo) {
|
|
foreach($errInfo as $info) {
|
|
$error .= implode(', ', array($info['SQLSTATE'], $info['code'], $info['message']));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if(isset($_REQUEST['showqueries'])) {
|
|
$endtime = round(microtime(true) - $starttime,4);
|
|
Debug::message("\n$sql\n{$endtime}ms\n", false);
|
|
}
|
|
|
|
if(!$handle && $errorLevel) $this->databaseError("Couldn't run query ($error): $sql", $errorLevel);
|
|
return new MSSQLQuery($this, $handle, $this->mssql);
|
|
}
|
|
|
|
public function getGeneratedID($table) {
|
|
return $this->query("SELECT IDENT_CURRENT('$table')")->value();
|
|
}
|
|
|
|
/**
|
|
* MSSQL stores the primary key column with an internal identifier,
|
|
* so a lookup needs to be done to determine it.
|
|
*
|
|
* @param string $tableName Name of table with primary key column "ID"
|
|
* @return string Internal identifier for primary key
|
|
*/
|
|
function getPrimaryKey($tableName){
|
|
$indexes=DB::query("EXEC sp_helpindex '$tableName';");
|
|
$indexName = '';
|
|
foreach($indexes as $index) {
|
|
if($index['index_keys'] == 'ID') {
|
|
$indexName = $index['index_name'];
|
|
break;
|
|
}
|
|
}
|
|
|
|
return $indexName;
|
|
}
|
|
|
|
function getIdentityColumn($tableName) {
|
|
return $this->query("
|
|
SELECT
|
|
TABLE_NAME + '.' + COLUMN_NAME,
|
|
TABLE_NAME
|
|
FROM
|
|
INFORMATION_SCHEMA.COLUMNS
|
|
WHERE
|
|
TABLE_SCHEMA = 'dbo' AND
|
|
COLUMNPROPERTY(object_id(TABLE_NAME), COLUMN_NAME, 'IsIdentity') = 1 AND
|
|
TABLE_NAME = '$tableName'
|
|
")->value();
|
|
}
|
|
|
|
public function isActive() {
|
|
return $this->active ? true : false;
|
|
}
|
|
|
|
/**
|
|
* Create the database that is currently selected.
|
|
*/
|
|
public function createDatabase() {
|
|
$this->query("CREATE DATABASE \"$this->database\"");
|
|
$this->selectDatabase($this->database);
|
|
}
|
|
|
|
/**
|
|
* Drop the database that this object is currently connected to.
|
|
* Use with caution.
|
|
*/
|
|
public function dropDatabase() {
|
|
$db = $this->database;
|
|
$this->selectDatabase('master');
|
|
$this->query("DROP DATABASE \"$db\"");
|
|
$this->active = false;
|
|
}
|
|
|
|
/**
|
|
* Drop the given database name.
|
|
* Use with caution.
|
|
* @param string $name Database name to drop
|
|
*/
|
|
public function dropDatabaseByName($name) {
|
|
$this->query("DROP DATABASE \"$name\"");
|
|
}
|
|
|
|
/**
|
|
* 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()
|
|
*
|
|
* @param string $dbname The database name to switch to
|
|
*/
|
|
public function selectDatabase($dbname) {
|
|
$this->database = $dbname;
|
|
|
|
if($this->databaseExists($this->database)) {
|
|
if($this->mssql) {
|
|
if(mssql_select_db($this->database, $this->dbConn)) {
|
|
$this->active = true;
|
|
}
|
|
} else {
|
|
$this->query("USE \"$this->database\"");
|
|
$this->active = true;
|
|
}
|
|
}
|
|
|
|
$this->tableList = $this->fieldList = $this->indexList = $this->fullTextEnabled = null;
|
|
}
|
|
|
|
/**
|
|
* Check if the given database exists from {@link allDatabaseNames()}.
|
|
* @param string $name Name of database to check exists
|
|
* @return boolean
|
|
*/
|
|
public function databaseExists($name) {
|
|
$databases = $this->allDatabaseNames();
|
|
foreach($databases as $dbname) {
|
|
if($dbname == $name) return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Return all databases names from the server.
|
|
* @return array
|
|
*/
|
|
public function allDatabaseNames() {
|
|
return $this->query('SELECT NAME FROM sys.sysdatabases')->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 $options An map of additional options. The available keys are as follows:
|
|
* - 'MSSQLDatabase'/'MySQLDatabase'/'PostgreSQLDatabase' - database-specific options such as "engine" for MySQL.
|
|
* - 'temporary' - If true, then a temporary table will be created
|
|
* @return The table name generated. This may be different from the table name, for example with temporary tables.
|
|
*/
|
|
public function createTable($tableName, $fields = null, $indexes = null, $options = null, $advancedOptions = null) {
|
|
$fieldSchemas = $indexSchemas = "";
|
|
if($fields) foreach($fields as $k => $v) $fieldSchemas .= "\"$k\" $v,\n";
|
|
|
|
// Temporary tables start with "#" in MSSQL-land
|
|
if(!empty($options['temporary'])) {
|
|
// Randomize the temp table name to avoid conflicts in the tempdb table which derived databases share
|
|
$tableName = "#$tableName" . '-' . rand(1000000, 9999999);
|
|
}
|
|
|
|
$this->query("CREATE TABLE \"$tableName\" (
|
|
$fieldSchemas
|
|
primary key (\"ID\")
|
|
);");
|
|
|
|
//we need to generate indexes like this: CREATE INDEX IX_vault_to_export ON vault (to_export);
|
|
//This needs to be done AFTER the table creation, so we can set up the fulltext indexes correctly
|
|
if($indexes) foreach($indexes as $k => $v) {
|
|
$indexSchemas .= $this->getIndexSqlDefinition($tableName, $k, $v) . "\n";
|
|
}
|
|
|
|
if($indexSchemas) $this->query($indexSchemas);
|
|
|
|
return $tableName;
|
|
}
|
|
|
|
/**
|
|
* 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 $alteredIndexes Updated indexes, a map of index name => index type
|
|
*/
|
|
public function alterTable($tableName, $newFields = null, $newIndexes = null, $alteredFields = null, $alteredIndexes = null, $alteredOptions=null, $advancedOptions=null) {
|
|
$alterList = array();
|
|
$indexList = $this->indexList($tableName);
|
|
|
|
// drop any fulltext indexes that exist on the table before altering the structure
|
|
if($this->fullTextIndexExists($tableName)) {
|
|
$alterList[] = "\nDROP FULLTEXT INDEX ON \"$tableName\";";
|
|
}
|
|
|
|
if($newFields) foreach($newFields as $k => $v) $alterList[] = "ALTER TABLE \"$tableName\" ADD \"$k\" $v";
|
|
|
|
if($alteredFields) foreach($alteredFields as $k => $v) $alterList[] = $this->alterTableAlterColumn($tableName, $k, $v, $indexList);
|
|
if($alteredIndexes) foreach($alteredIndexes as $k => $v) $alterList[] = $this->getIndexSqlDefinition($tableName, $k, $v);
|
|
if($newIndexes) foreach($newIndexes as $k => $v) $alterList[] = $this->getIndexSqlDefinition($tableName, $k, $v);
|
|
|
|
if($alterList) {
|
|
foreach($alterList as $alteration) {
|
|
if($alteration != '') {
|
|
$this->query($alteration);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Given the table and column name, retrieve the constraint name for that column
|
|
* in the table.
|
|
*/
|
|
public function getConstraintName($tableName, $columnName) {
|
|
return $this->query("
|
|
SELECT CONSTRAINT_NAME
|
|
FROM INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE
|
|
WHERE TABLE_NAME = '$tableName' AND COLUMN_NAME = '$columnName'
|
|
")->value();
|
|
}
|
|
|
|
/**
|
|
* Given a table and column name, return a check constraint clause for that column in
|
|
* the table.
|
|
*
|
|
* This is an expensive query, so it is cached per-request and stored by table. The initial
|
|
* call for a table that has not been cached will query all columns and store that
|
|
* so subsequent calls are fast.
|
|
*
|
|
* @param string $tableName Table name column resides in
|
|
* @param string $columnName Column name the constraint is for
|
|
* @return string The check string
|
|
*/
|
|
public function getConstraintCheckClause($tableName, $columnName) {
|
|
if(isset(self::$cached_checks[$tableName])) {
|
|
if(!isset(self::$cached_checks[$tableName][$columnName])) self::$cached_checks[$tableName][$columnName] = null;
|
|
return self::$cached_checks[$tableName][$columnName];
|
|
}
|
|
|
|
$checks = array();
|
|
foreach($this->query("
|
|
SELECT CAST(CHECK_CLAUSE AS TEXT) AS CHECK_CLAUSE, COLUMN_NAME
|
|
FROM INFORMATION_SCHEMA.CHECK_CONSTRAINTS AS CC
|
|
INNER JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE AS CCU ON CCU.CONSTRAINT_NAME = CC.CONSTRAINT_NAME
|
|
WHERE TABLE_NAME = '$tableName'
|
|
") as $record) {
|
|
$checks[$record['COLUMN_NAME']] = $record['CHECK_CLAUSE'];
|
|
}
|
|
|
|
self::$cached_checks[$tableName] = $checks;
|
|
if(!isset(self::$cached_checks[$tableName][$columnName])) self::$cached_checks[$tableName][$columnName] = null;
|
|
|
|
return self::$cached_checks[$tableName][$columnName];
|
|
}
|
|
|
|
/**
|
|
* Return the name of the default constraint applied to $tableName.$colName.
|
|
* Will return null if no such constraint exists
|
|
*/
|
|
protected function defaultConstraintName($tableName, $colName) {
|
|
return $this->query("SELECT s.name --default name
|
|
FROM sys.sysobjects s
|
|
join sys.syscolumns c ON s.parent_obj = c.id
|
|
WHERE s.xtype = 'd'
|
|
and c.cdefault = s.id
|
|
and parent_obj= OBJECT_ID('$tableName')
|
|
and c.name = '$colName'")->value();
|
|
}
|
|
|
|
|
|
/**
|
|
* Get enum values from a constraint check clause.
|
|
* @param string $clause Check clause to parse values from
|
|
* @return array Enum values
|
|
*/
|
|
protected function enumValuesFromCheckClause($clause) {
|
|
$segments = preg_split('/ +OR *\[/i', $clause);
|
|
$constraints = array();
|
|
foreach($segments as $segment) {
|
|
$bits = preg_split('/ *= */', $segment);
|
|
for($i = 1; $i < sizeof($bits); $i += 2) {
|
|
array_unshift($constraints, substr(rtrim($bits[$i], ')'), 1, -1));
|
|
|
|
}
|
|
}
|
|
return $constraints;
|
|
}
|
|
|
|
/*
|
|
* Creates an ALTER expression for a column in MS SQL
|
|
*
|
|
* @param $tableName Name of the table to be altered
|
|
* @param $colName Name of the column to be altered
|
|
* @param $colSpec String which contains conditions for a column
|
|
* @return string
|
|
*/
|
|
protected function alterTableAlterColumn($tableName, $colName, $colSpec, $indexList){
|
|
|
|
// First, we split the column specifications into parts
|
|
// TODO: this returns an empty array for the following string: int(11) not null auto_increment
|
|
// on second thoughts, why is an auto_increment field being passed through?
|
|
$pattern = '/^([\w()]+)\s?((?:not\s)?null)?\s?(default\s[\w\']+)?\s?(check\s?[\w()\'",\s]+)?$/i';
|
|
$matches=Array();
|
|
preg_match($pattern, $colSpec, $matches);
|
|
|
|
// drop the index if it exists
|
|
$alterCol='';
|
|
$indexName = isset($indexList[$colName]['indexname']) ? $indexList[$colName]['indexname'] : null;
|
|
if($indexName && $colName != 'ID') {
|
|
$alterCol = "\nDROP INDEX \"$indexName\" ON \"$tableName\";";
|
|
}
|
|
|
|
$prefix="ALTER TABLE \"" . $tableName . "\" ";
|
|
|
|
// Remove the old default prior to adjusting the column.
|
|
if($defaultConstraintName = $this->defaultConstraintName($tableName, $colName)) {
|
|
$alterCol .= ";\n$prefix DROP CONSTRAINT \"$defaultConstraintName\"";
|
|
}
|
|
|
|
if(isset($matches[1])) {
|
|
//We will prevent any changes being made to the ID column. Primary key indexes will have a fit if we do anything here.
|
|
if($colName!='ID'){
|
|
|
|
// SET null / not null
|
|
if(!empty($matches[2])) $alterCol .= ";\n$prefix ALTER COLUMN \"$colName\" $matches[1] $matches[2]";
|
|
else $alterCol .= ";\n$prefix ALTER COLUMN \"$colName\" $matches[1]";
|
|
|
|
// Add a default back
|
|
if(!empty($matches[3])) $alterCol .= ";\n$prefix ADD $matches[3] FOR \"$colName\"";
|
|
|
|
// SET check constraint (The constraint HAS to be dropped)
|
|
if(!empty($matches[4])) {
|
|
$constraint = $this->getConstraintName($tableName, $colName);
|
|
if($constraint) {
|
|
$alterCol .= ";\n$prefix DROP CONSTRAINT {$constraint}";
|
|
}
|
|
|
|
//NOTE: 'with nocheck' seems to solve a few problems I've been having for modifying existing tables.
|
|
$alterCol .= ";\n$prefix WITH NOCHECK ADD CONSTRAINT \"{$tableName}_{$colName}_check\" $matches[4]";
|
|
}
|
|
}
|
|
}
|
|
|
|
return isset($alterCol) ? $alterCol : '';
|
|
}
|
|
|
|
public function renameTable($oldTableName, $newTableName) {
|
|
$this->query("EXEC sp_rename \"$oldTableName\", \"$newTableName\"");
|
|
}
|
|
|
|
/**
|
|
* Checks a table's integrity and repairs it if necessary.
|
|
* NOTE: MSSQL does not appear to support any vacuum or optimise commands
|
|
*
|
|
* @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) {
|
|
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) {
|
|
$this->query("EXEC sp_rename @objname = '$tableName.$oldName', @newname = '$newName', @objtype = 'COLUMN'");
|
|
}
|
|
|
|
public function fieldList($table) {
|
|
//This gets us more information than we need, but I've included it all for the moment....
|
|
$fieldRecords = $this->query("SELECT ordinal_position, column_name, data_type, column_default,
|
|
is_nullable, character_maximum_length, numeric_precision, numeric_scale, collation_name
|
|
FROM information_schema.columns WHERE table_name = '$table'
|
|
ORDER BY ordinal_position;");
|
|
|
|
// Cache the records from the query - otherwise a lack of multiple active result sets
|
|
// will cause subsequent queries to fail in this method
|
|
$fields = array();
|
|
$output = array();
|
|
foreach($fieldRecords as $record) {
|
|
$fields[] = $record;
|
|
}
|
|
|
|
foreach($fields as $field) {
|
|
// Update the data_type field to be a complete column definition string for use by
|
|
// SS_Database::requireField()
|
|
switch($field['data_type']){
|
|
case 'bigint':
|
|
case 'numeric':
|
|
case 'float':
|
|
case 'bit':
|
|
if($field['data_type'] != 'bigint' && $sizeSuffix = $field['numeric_precision']) {
|
|
$field['data_type'] .= "($sizeSuffix)";
|
|
}
|
|
|
|
if($field['is_nullable'] == 'YES') {
|
|
$field['data_type'] .= ' null';
|
|
} else {
|
|
$field['data_type'] .= ' not null';
|
|
}
|
|
if($field['column_default']) {
|
|
$default=substr($field['column_default'], 2, -2);
|
|
$field['data_type'] .= " default $default";
|
|
}
|
|
break;
|
|
|
|
case 'decimal':
|
|
if($field['numeric_precision']) {
|
|
$sizeSuffix = $field['numeric_precision'] . ',' . $field['numeric_scale'];
|
|
$field['data_type'] .= "($sizeSuffix)";
|
|
}
|
|
|
|
if($field['is_nullable'] == 'YES') {
|
|
$field['data_type'] .= ' null';
|
|
} else {
|
|
$field['data_type'] .= ' not null';
|
|
}
|
|
if($field['column_default']) {
|
|
$default=substr($field['column_default'], 2, -2);
|
|
$field['data_type'] .= " default $default";
|
|
}
|
|
break;
|
|
|
|
case 'nvarchar':
|
|
case 'varchar':
|
|
//Check to see if there's a constraint attached to this column:
|
|
$clause = $this->getConstraintCheckClause($table, $field['column_name']);
|
|
if($clause) {
|
|
$constraints = $this->enumValuesFromCheckClause($clause);
|
|
$default=substr($field['column_default'], 2, -2);
|
|
$field['data_type'] = $this->enum(array(
|
|
'default' => $default,
|
|
'name' => $field['column_name'],
|
|
'enums' => $constraints,
|
|
'table' => $table
|
|
));
|
|
break;
|
|
}
|
|
|
|
default:
|
|
$sizeSuffix = $field['character_maximum_length'];
|
|
if($sizeSuffix == '-1') $sizeSuffix = 'max';
|
|
if($sizeSuffix) {
|
|
$field['data_type'] .= "($sizeSuffix)";
|
|
}
|
|
|
|
if($field['is_nullable'] == 'YES') {
|
|
$field['data_type'] .= ' null';
|
|
} else {
|
|
$field['data_type'] .= ' not null';
|
|
}
|
|
if($field['column_default']) {
|
|
$default=substr($field['column_default'], 2, -2);
|
|
$field['data_type'] .= " default '$default'";
|
|
}
|
|
}
|
|
$output[$field['column_name']]=$field;
|
|
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
*
|
|
* This is a stub function. Postgres caches the fieldlist results.
|
|
*
|
|
* @param string $tableName
|
|
*
|
|
* @return boolean
|
|
*/
|
|
function clear_cached_fieldlist($tableName=false){
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Create an index on a table.
|
|
* @param string $tableName The name of the table.
|
|
* @param string $indexName The name of the index.
|
|
* @param string $indexSpec The specification of the index, see SS_Database::requireIndex() for more details.
|
|
*/
|
|
public function createIndex($tableName, $indexName, $indexSpec) {
|
|
$this->query($this->getIndexSqlDefinition($tableName, $indexName, $indexSpec));
|
|
}
|
|
|
|
/**
|
|
* This takes the index spec which has been provided by a class (ie static $indexes = blah blah)
|
|
* and turns it into a proper string.
|
|
* Some indexes may be arrays, such as fulltext and unique indexes, and this allows database-specific
|
|
* arrays to be created.
|
|
*/
|
|
public function convertIndexSpec($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;
|
|
}
|
|
}
|
|
|
|
return $indexSpec;
|
|
}
|
|
|
|
/**
|
|
* Return SQL for dropping and recreating an index
|
|
*/
|
|
protected function getIndexSqlDefinition($tableName, $indexName, $indexSpec) {
|
|
$index = 'ix_' . $tableName . '_' . $indexName;
|
|
$drop = "IF EXISTS (SELECT name FROM sys.indexes WHERE name = '$index') DROP INDEX $index ON \"" . $tableName . "\";";
|
|
|
|
if(!is_array($indexSpec)) {
|
|
$indexSpec=trim($indexSpec, '()');
|
|
$bits=explode(',', $indexSpec);
|
|
$indexes="\"" . implode("\",\"", $bits) . "\"";
|
|
|
|
return "$drop CREATE INDEX $index ON \"" . $tableName . "\" (" . $indexes . ");";
|
|
} else {
|
|
// create a type-specific index
|
|
if($indexSpec['type'] == 'fulltext') {
|
|
if($this->fullTextEnabled()) {
|
|
// enable fulltext on this table
|
|
$this->createFullTextCatalog();
|
|
$primary_key = $this->getPrimaryKey($tableName);
|
|
|
|
$query = '';
|
|
if($primary_key) {
|
|
$query .= "CREATE FULLTEXT INDEX ON \"$tableName\" ({$indexSpec['value']}) KEY INDEX $primary_key WITH CHANGE_TRACKING AUTO;";
|
|
}
|
|
|
|
return $query;
|
|
}
|
|
}
|
|
|
|
if($indexSpec['type'] == 'unique') {
|
|
if(!is_array($indexSpec['value'])) $columns = preg_split('/ *, */', trim($indexSpec['value']));
|
|
else $columns = $indexSpec['value'];
|
|
$SQL_columnList = '"' . implode('", "', $columns) . '"';
|
|
|
|
return "$drop CREATE UNIQUE INDEX $index ON \"" . $tableName . "\" ($SQL_columnList);";
|
|
}
|
|
}
|
|
}
|
|
|
|
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 $indexSpec The specification of the index, see SS_Database::requireIndex() for more details.
|
|
*/
|
|
public function alterIndex($tableName, $indexName, $indexSpec) {
|
|
$indexSpec = trim($indexSpec);
|
|
if($indexSpec[0] != '(') {
|
|
list($indexType, $indexFields) = explode(' ',$indexSpec,2);
|
|
} else {
|
|
$indexFields = $indexSpec;
|
|
}
|
|
|
|
if(!$indexType) {
|
|
$indexType = "index";
|
|
}
|
|
|
|
$this->query("DROP INDEX $indexName ON $tableName;");
|
|
$this->query("ALTER TABLE \"$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) {
|
|
$indexes = DB::query("EXEC sp_helpindex '$table';");
|
|
$prefix = '';
|
|
$indexList = array();
|
|
|
|
foreach($indexes as $index) {
|
|
if(strpos($index['index_description'], 'unique') !== false) {
|
|
$prefix='unique ';
|
|
}
|
|
|
|
$key = str_replace(', ', ',', $index['index_keys']);
|
|
$indexList[$key]['indexname'] = $index['index_name'];
|
|
$indexList[$key]['spec'] = $prefix . '(' . $key . ')';
|
|
}
|
|
|
|
// Now we need to check to see if we have any fulltext indexes attached to this table:
|
|
if($this->fullTextEnabled()) {
|
|
$result = DB::query('EXEC sp_help_fulltext_columns;');
|
|
$columns = '';
|
|
foreach($result as $row) {
|
|
if($row['TABLE_NAME'] == $table) {
|
|
$columns .= $row['FULLTEXT_COLUMN_NAME'] . ',';
|
|
}
|
|
}
|
|
|
|
if($columns!=''){
|
|
$columns=trim($columns, ',');
|
|
$indexList['SearchFields']['indexname'] = 'SearchFields';
|
|
$indexList['SearchFields']['spec'] = 'fulltext (' . $columns . ')';
|
|
}
|
|
}
|
|
|
|
return $indexList;
|
|
}
|
|
|
|
/**
|
|
* Returns a list of all the tables in the database.
|
|
* Table names will all be in lowercase.
|
|
* @return array
|
|
*/
|
|
public function tableList() {
|
|
$tables = array();
|
|
foreach($this->query("EXEC sp_tables @table_owner = 'dbo';") as $record) {
|
|
$tables[strtolower($record['TABLE_NAME'])] = $record['TABLE_NAME'];
|
|
}
|
|
return $tables;
|
|
}
|
|
|
|
/**
|
|
* Empty the given table of all contents.
|
|
*/
|
|
public function clearTable($table) {
|
|
$this->query("TRUNCATE TABLE \"$table\"");
|
|
}
|
|
|
|
/**
|
|
* Return the number of rows affected by the previous operation.
|
|
* @return int
|
|
*/
|
|
public function affectedRows() {
|
|
if($this->mssql) {
|
|
return mssql_rows_affected($this->dbConn);
|
|
} else {
|
|
return $this->lastAffectedRows;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return a boolean type-formatted string
|
|
* We use 'bit' so that we can do numeric-based comparisons
|
|
*
|
|
* @params array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function boolean($values) {
|
|
$default = ($values['default']) ? '1' : '0';
|
|
return 'bit not null default ' . $default;
|
|
}
|
|
|
|
/**
|
|
* Return a date type-formatted string.
|
|
*
|
|
* @params array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function date($values) {
|
|
return 'date null';
|
|
}
|
|
|
|
/**
|
|
* Return a decimal type-formatted string
|
|
*
|
|
* @params array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function decimal($values) {
|
|
// Avoid empty strings being put in the db
|
|
if($values['precision'] == '') {
|
|
$precision = 1;
|
|
} else {
|
|
$precision = $values['precision'];
|
|
}
|
|
|
|
$defaultValue = '0';
|
|
if(isset($values['default']) && is_numeric($values['default'])) {
|
|
$defaultValue = $values['default'];
|
|
}
|
|
|
|
return 'decimal(' . $precision . ') not null default ' . $defaultValue;
|
|
}
|
|
|
|
/**
|
|
* Return a enum type-formatted string
|
|
*
|
|
* @params array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function enum($values) {
|
|
// Enums are a bit different. We'll be creating a varchar(255) with a constraint of all the
|
|
// usual enum options.
|
|
// NOTE: In this one instance, we are including the table name in the values array
|
|
|
|
$maxLength = max(array_map('strlen', $values['enums']));
|
|
|
|
return "varchar($maxLength) not null default '" . $values['default']
|
|
. "' check(\"" . $values['name'] . "\" in ('" . implode("','", $values['enums'])
|
|
. "'))";
|
|
}
|
|
|
|
/**
|
|
* @todo Make this work like {@link MySQLDatabase::set()}
|
|
*/
|
|
public function set($values) {
|
|
return $this->enum($values);
|
|
}
|
|
|
|
/**
|
|
* Return a float type-formatted string.
|
|
*
|
|
* @params array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function float($values) {
|
|
return 'float not null default ' . $values['default'];
|
|
}
|
|
|
|
/**
|
|
* Return a int type-formatted string
|
|
*
|
|
* @params array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function int($values) {
|
|
//We'll be using an 8 digit precision to keep it in line with the serial8 datatype for ID columns
|
|
return 'numeric(8) not null default ' . (int) $values['default'];
|
|
}
|
|
|
|
/**
|
|
* Return a datetime type-formatted string
|
|
* For MS SQL, we simply return the word 'timestamp', no other parameters are necessary
|
|
*
|
|
* @params array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function ss_datetime($values) {
|
|
return 'datetime null';
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
$collation = self::$collation ? " COLLATE " . self::$collation : "";
|
|
return "nvarchar(max)$collation null";
|
|
}
|
|
|
|
/**
|
|
* Return a time type-formatted string.
|
|
*
|
|
* @params array $values Contains a tokenised list of info about this data type
|
|
* @return string
|
|
*/
|
|
public function time($values){
|
|
return 'time null';
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
$collation = self::$collation ? " COLLATE " . self::$collation : "";
|
|
return "nvarchar(" . $values['precision'] . ")$collation null";
|
|
}
|
|
|
|
/**
|
|
* Return a 4 digit numeric type.
|
|
* @return string
|
|
*/
|
|
public function year($values) {
|
|
return 'numeric(4)';
|
|
}
|
|
|
|
/**
|
|
* This returns the column which is the primary key for each table
|
|
* In Postgres, it is a SERIAL8, which is the equivalent of an auto_increment
|
|
*
|
|
* @return string
|
|
*/
|
|
function IdColumn($asDbValue=false, $hasAutoIncPK=true){
|
|
if($asDbValue)
|
|
return 'bigint not null';
|
|
else {
|
|
if($hasAutoIncPK)
|
|
return 'bigint identity(1,1)';
|
|
else return 'bigint not null';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the SQL command to get all the tables in this database
|
|
*/
|
|
function allTablesSQL(){
|
|
return "SELECT \"name\" FROM \"sys\".\"tables\";";
|
|
}
|
|
|
|
/**
|
|
* Returns true if this table exists
|
|
* @todo Make a proper implementation
|
|
*/
|
|
function hasTable($tableName) {
|
|
$SQL_tableName = Convert::raw2sql($tableName);
|
|
$value = DB::query("SELECT table_name FROM information_schema.tables WHERE table_name = '$SQL_tableName'")->value();
|
|
return (bool)$value;
|
|
}
|
|
|
|
/**
|
|
* Returns the values of the given enum field
|
|
* NOTE: Experimental; introduced for db-abstraction and may changed before 2.4 is released.
|
|
*/
|
|
public function enumValuesForField($tableName, $fieldName) {
|
|
$classes = array();
|
|
|
|
// Get the enum of all page types from the SiteTree table
|
|
$clause = $this->getConstraintCheckClause($tableName, $fieldName);
|
|
if($clause) {
|
|
$classes = $this->enumValuesFromCheckClause($clause);
|
|
}
|
|
|
|
return $classes;
|
|
}
|
|
|
|
/**
|
|
* SQL Server uses CURRENT_TIMESTAMP for the current date/time.
|
|
*/
|
|
function now() {
|
|
return 'CURRENT_TIMESTAMP';
|
|
}
|
|
|
|
/**
|
|
* Returns the database-specific version of the random() function
|
|
*/
|
|
function random(){
|
|
return 'RAND()';
|
|
}
|
|
|
|
/**
|
|
* This is a lookup table for data types.
|
|
*
|
|
* For instance, MSSQL uses 'BIGINT', while MySQL uses 'UNSIGNED'
|
|
* and PostgreSQL uses 'INT'.
|
|
*/
|
|
function dbDataType($type){
|
|
$values = array(
|
|
'unsigned integer'=>'BIGINT'
|
|
);
|
|
if(isset($values[$type])) return $values[$type];
|
|
else return '';
|
|
}
|
|
|
|
/**
|
|
* Convert a SQLQuery object into a SQL statement.
|
|
*
|
|
* Needs to be overloaded from {@link Database} because MSSQL has
|
|
* a very specific way of limiting results from a query.
|
|
*
|
|
* @param SQLQuery
|
|
* @return string SQL text
|
|
*/
|
|
public function sqlQueryToString(SQLQuery $query) {
|
|
// get the limit and offset
|
|
$limit = '';
|
|
$offset = '0';
|
|
$text = '';
|
|
$suffixText = '';
|
|
$nestedQuery = false;
|
|
|
|
if(is_array($query->getLimit())) {
|
|
$limitArr = $query->getLimit();
|
|
if(isset($limitArr['limit'])) $limit = $limitArr['limit'];
|
|
if(isset($limitArr['start'])) $offset = $limitArr['start'];
|
|
} else if(preg_match('/^([0-9]+) offset ([0-9]+)$/i', trim($query->getLimit()), $matches)) {
|
|
$limit = $matches[1];
|
|
$offset = $matches[2];
|
|
} else {
|
|
//could be a comma delimited string
|
|
$bits = explode(',', $query->getLimit());
|
|
if(sizeof($bits) > 1) {
|
|
list($offset, $limit) = $bits;
|
|
} else {
|
|
$limit = $bits[0];
|
|
}
|
|
}
|
|
|
|
// DELETE queries
|
|
if($query->getDelete()) {
|
|
$text = 'DELETE ';
|
|
} else {
|
|
$distinct = $query->getDistinct() ? 'DISTINCT ' : '';
|
|
// If there's a limit but no offset, just use 'TOP X'
|
|
// rather than the more complex sub-select method
|
|
if ($limit != 0 && $offset == 0) {
|
|
$text = "SELECT $distinct TOP $limit";
|
|
|
|
// If there's a limit and an offset, then we need to do a subselect
|
|
} else if($limit && $offset) {
|
|
if($query->getOrderBy()) {
|
|
$orderByClause = $this->sqlOrderByToString($query->getOrderBy());
|
|
$rowNumber = "ROW_NUMBER() OVER ($orderByClause) AS Number";
|
|
} else {
|
|
$selects = $query->getSelect();
|
|
$firstCol = reset($selects);
|
|
$rowNumber = "ROW_NUMBER() OVER (ORDER BY $firstCol) AS Number";
|
|
}
|
|
$text = "SELECT * FROM (SELECT $distinct$rowNumber, ";
|
|
$suffixText .= ") AS Numbered WHERE Number BETWEEN " . ($offset+1) ." AND " . ($offset+$limit)
|
|
. " ORDER BY Number";
|
|
$nestedQuery = true;
|
|
|
|
// Otherwise a simple query
|
|
} else {
|
|
$text = "SELECT $distinct";
|
|
}
|
|
|
|
// Now add the columns to be selected
|
|
// strip off the SELECT text as it gets done above instead
|
|
$text .= trim(str_replace('SELECT' , '', $this->sqlSelectToString($query->getSelect())));
|
|
}
|
|
|
|
if($query->getFrom()) $text .= $this->sqlFromToString($query->getFrom());
|
|
if($query->getWhere()) $text .= $this->sqlWhereToString($query->getWhere(), $query->getConnective());
|
|
|
|
// these clauses only make sense in SELECT queries, not DELETE
|
|
if(!$query->getDelete()) {
|
|
if($query->getGroupBy()) $text .= $this->sqlGroupByToString($query->getGroupBy());
|
|
if($query->getHaving()) $text .= $this->sqlHavingToString($query->getHaving());
|
|
if($query->getOrderBy() && !$nestedQuery) $text .= $this->sqlOrderByToString($query->getOrderBy());
|
|
}
|
|
|
|
// $suffixText is used by the nested queries to create an offset limit
|
|
if($suffixText) $text .= $suffixText;
|
|
|
|
return $text;
|
|
}
|
|
|
|
/**
|
|
* Escapes a value with specific escape characters specific to the MSSQL.
|
|
* @param string $value String to escape
|
|
* @return string Escaped string
|
|
*/
|
|
function addslashes($value){
|
|
$value=str_replace("'","''",$value);
|
|
$value=str_replace("\0","[NULL]",$value);
|
|
|
|
return $value;
|
|
}
|
|
|
|
/**
|
|
* This changes the index name depending on database requirements.
|
|
* MSSQL requires underscores to be replaced with commas.
|
|
*/
|
|
function modifyIndex($index) {
|
|
return str_replace('_', ',', $index);
|
|
}
|
|
|
|
/**
|
|
* The core search engine configuration.
|
|
* Picks up the fulltext-indexed tables from the database and executes search on all of them.
|
|
* Results are obtained as ID-ClassName pairs which is later used to reconstruct the DataObjectSet.
|
|
*
|
|
* @param array classesToSearch computes all descendants and includes them. Check is done via WHERE clause.
|
|
* @param string $keywords Keywords as a space separated string
|
|
* @return object DataObjectSet of result pages
|
|
*/
|
|
public function searchEngine($classesToSearch, $keywords, $start, $pageLength, $sortBy = "Relevance DESC", $extraFilter = "", $booleanSearch = false, $alternativeFileFilter = "", $invertedMatch = false) {
|
|
if(isset($objects)) $results = new ArrayList($objects);
|
|
else $results = new ArrayList();
|
|
|
|
if (!$this->fullTextEnabled()) return $results;
|
|
if (!in_array(substr($sortBy, 0, 9), array('"Relevanc', 'Relevance'))) user_error("Non-relevance sort not supported.", E_USER_ERROR);
|
|
|
|
$allClassesToSearch = array();
|
|
foreach ($classesToSearch as $class) {
|
|
$allClassesToSearch = array_merge($allClassesToSearch, ClassInfo::dataClassesFor($class));
|
|
}
|
|
$allClassesToSearch = array_unique($allClassesToSearch);
|
|
|
|
//Get a list of all the tables and columns we'll be searching on:
|
|
$fulltextColumns = DB::query('EXEC sp_help_fulltext_columns');
|
|
$queries = array();
|
|
|
|
// Sort the columns back into tables.
|
|
$tables = array();
|
|
foreach($fulltextColumns as $column) {
|
|
// Skip extension tables.
|
|
if(substr($column['TABLE_NAME'], -5)=='_Live' || substr($column['TABLE_NAME'], -9)=='_versions') continue;
|
|
|
|
// Add the column to table.
|
|
$table = &$tables[$column['TABLE_NAME']];
|
|
if (!$table) $table = array($column['FULLTEXT_COLUMN_NAME']);
|
|
else array_push($table, $column['FULLTEXT_COLUMN_NAME']);
|
|
}
|
|
|
|
// Create one query per each table, $columns not used. We want just the ID and the ClassName of the object from this query.
|
|
foreach($tables as $tableName=>$columns){
|
|
$baseClass = ClassInfo::baseDataClass($tableName);
|
|
|
|
$join = $this->fullTextSearchMSSQL($tableName, $keywords);
|
|
if (!$join) return $results; // avoid "Null or empty full-text predicate"
|
|
|
|
// Check if we need to add ShowInSearch
|
|
$where = null;
|
|
if(strpos($tableName, 'SiteTree') === 0) {
|
|
$where = array("\"$tableName\".\"ShowInSearch\"!=0");
|
|
} elseif(strpos($tableName, 'File') === 0) {
|
|
// File.ShowInSearch was added later, keep the database driver backwards compatible
|
|
// by checking for its existence first
|
|
$fields = $this->fieldList($tableName);
|
|
if(array_key_exists('ShowInSearch', $fields)) {
|
|
$where = array("\"$tableName\".\"ShowInSearch\"!=0");
|
|
}
|
|
}
|
|
|
|
$queries[$tableName] = DataList::create($tableName)->where($where, '')->dataQuery()->query();
|
|
$queries[$tableName]->setOrderBy(array());
|
|
|
|
// Join with CONTAINSTABLE, a full text searcher that includes relevance factor
|
|
$queries[$tableName]->setFrom(array("\"$tableName\" INNER JOIN $join AS \"ft\" ON \"$tableName\".\"ID\"=\"ft\".\"KEY\""));
|
|
// Join with the base class if needed, as we want to test agains the ClassName
|
|
if ($tableName != $baseClass) {
|
|
$queries[$tableName]->setFrom("INNER JOIN \"$baseClass\" ON \"$baseClass\".\"ID\"=\"$tableName\".\"ID\"");
|
|
}
|
|
|
|
$queries[$tableName]->setSelect(array("\"$tableName\".\"ID\""));
|
|
$queries[$tableName]->selectField("'$tableName'", 'Source');
|
|
$queries[$tableName]->selectField('Rank', 'Relevance');
|
|
if ($extraFilter) {
|
|
$queries[$tableName]->addWhere($extraFilter);
|
|
}
|
|
if (count($allClassesToSearch)) {
|
|
$queries[$tableName]->addWhere("\"$baseClass\".\"ClassName\" IN ('".implode($allClassesToSearch, "', '")."')");
|
|
}
|
|
// Reset the parameters that would get in the way
|
|
|
|
}
|
|
|
|
// Generate SQL
|
|
$querySQLs = array();
|
|
foreach($queries as $query) {
|
|
$querySQLs[] = $query->sql();
|
|
}
|
|
|
|
// Unite the SQL
|
|
$fullQuery = implode(" UNION ", $querySQLs) . " ORDER BY $sortBy";
|
|
|
|
// Perform the search
|
|
$result = DB::query($fullQuery);
|
|
|
|
// Regenerate DataObjectSet - watch out, numRecords doesn't work on sqlsrv driver on Windows.
|
|
$current = -1;
|
|
$objects = array();
|
|
foreach ($result as $row) {
|
|
$current++;
|
|
|
|
// Select a subset for paging
|
|
if ($current >= $start && $current < $start + $pageLength) {
|
|
$objects[] = DataObject::get_by_id($row['Source'], $row['ID']);
|
|
}
|
|
}
|
|
|
|
if(isset($objects)) $results = new ArrayList($objects);
|
|
else $results = new ArrayList();
|
|
$list = new PaginatedList($results);
|
|
$list->setPageStart($start);
|
|
$list->setPageLength($pageLength);
|
|
$list->setTotalItems($current+1);
|
|
return $list;
|
|
}
|
|
|
|
/**
|
|
* Allow auto-increment primary key editing on the given table.
|
|
* Some databases need to enable this specially.
|
|
* @param $table The name of the table to have PK editing allowed on
|
|
* @param $allow True to start, false to finish
|
|
*/
|
|
function allowPrimaryKeyEditing($table, $allow = true) {
|
|
$this->query("SET IDENTITY_INSERT \"$table\" " . ($allow ? "ON" : "OFF"));
|
|
}
|
|
|
|
/**
|
|
* Check if a fulltext index exists on a particular table name.
|
|
* @return boolean TRUE index exists | FALSE index does not exist | NULL no support
|
|
*/
|
|
function fulltextIndexExists($tableName) {
|
|
// Special case for no full text index support
|
|
if(!$this->fullTextEnabled()) return null;
|
|
|
|
return (bool) $this->query("
|
|
SELECT 1 FROM sys.fulltext_indexes i
|
|
JOIN sys.objects o ON i.object_id = o.object_id
|
|
WHERE o.name = '$tableName'
|
|
")->value();
|
|
}
|
|
|
|
/**
|
|
* Returns a SQL fragment for querying a fulltext search index
|
|
*
|
|
* @param $tableName specific - table name
|
|
* @param $keywords string The search query
|
|
* @param $fields array The list of field names to search on, or null to include all
|
|
*
|
|
* @returns null if keyword set is empty or the string with JOIN clause to be added to SQL query
|
|
*/
|
|
function fullTextSearchMSSQL($tableName, $keywords, $fields = null) {
|
|
// Make sure we are getting an array of fields
|
|
if (isset($fields) && !is_array($fields)) $fields = array($fields);
|
|
|
|
// Strip unfriendly characters, SQLServer "CONTAINS" predicate will crash on & and | and ignore others anyway.
|
|
if (function_exists('mb_ereg_replace')) {
|
|
$keywords = mb_ereg_replace('[^\w\s]', '', trim($keywords));
|
|
}
|
|
else {
|
|
$keywords = Convert::raw2sql(str_replace(array('&','|','!','"','\''), '', trim($keywords)));
|
|
}
|
|
|
|
// Remove stopwords, concat with ANDs
|
|
$keywords = explode(' ', $keywords);
|
|
$keywords = self::removeStopwords($keywords);
|
|
$keywords = implode(' AND ', $keywords);
|
|
|
|
if (!$keywords || trim($keywords)=='') return null;
|
|
|
|
if ($fields) $fieldNames = '"' . implode('", "', $fields) . '"';
|
|
else $fieldNames = "*";
|
|
|
|
return "CONTAINSTABLE(\"$tableName\", ($fieldNames), '$keywords')";
|
|
}
|
|
|
|
/**
|
|
* Remove stopwords that would kill a MSSQL full-text query
|
|
*
|
|
* @param array $keywords
|
|
*
|
|
* @return array $keywords with stopwords removed
|
|
*/
|
|
static public function removeStopwords($keywords) {
|
|
$goodKeywords = array();
|
|
foreach($keywords as $keyword) {
|
|
if (in_array($keyword, self::$noiseWords)) continue;
|
|
$goodKeywords[] = trim($keyword);
|
|
}
|
|
return $goodKeywords;
|
|
}
|
|
|
|
/**
|
|
* Does this database support transactions?
|
|
*/
|
|
public function supportsTransactions(){
|
|
return $this->supportsTransactions;
|
|
}
|
|
|
|
/**
|
|
* This is a quick lookup to discover if the database supports particular extensions
|
|
* Currently, MSSQL supports no extensions
|
|
*/
|
|
public function supportsExtensions($extensions=Array('partitions', 'tablespaces', 'clustering')){
|
|
if(isset($extensions['partitions']))
|
|
return false;
|
|
elseif(isset($extensions['tablespaces']))
|
|
return false;
|
|
elseif(isset($extensions['clustering']))
|
|
return false;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @deprecated Use transactionStart() (method required for 2.4.x)
|
|
*/
|
|
public function startTransaction($transaction_mode=false, $session_characteristics=false){
|
|
$this->transactionStart($transaction_mode, $session_characteristics);
|
|
}
|
|
|
|
/**
|
|
* Start transaction. READ ONLY not supported.
|
|
*/
|
|
public function transactionStart($transaction_mode=false, $session_characteristics=false){
|
|
if($this->mssql) {
|
|
DB::query('BEGIN TRANSACTION');
|
|
} else {
|
|
$result = sqlsrv_begin_transaction($this->dbConn);
|
|
if (!$result) $this->databaseError("Couldn't start the transaction.", E_USER_ERROR);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Create a savepoint that you can jump back to if you encounter problems
|
|
*/
|
|
public function transactionSavepoint($savepoint){
|
|
DB::query("SAVE TRANSACTION \"$savepoint\"");
|
|
}
|
|
|
|
/**
|
|
* Rollback or revert to a savepoint if your queries encounter problems
|
|
* If you encounter a problem at any point during a transaction, you may
|
|
* need to rollback that particular query, or return to a savepoint
|
|
*/
|
|
public function transactionRollback($savepoint=false){
|
|
if($savepoint) {
|
|
DB::query("ROLLBACK TRANSACTION \"$savepoint\"");
|
|
} else {
|
|
if($this->mssql) {
|
|
DB::query('ROLLBACK TRANSACTION');
|
|
} else {
|
|
$result = sqlsrv_rollback($this->dbConn);
|
|
if (!$result) $this->databaseError("Couldn't rollback the transaction.", E_USER_ERROR);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @deprecated Use transactionEnd() (method required for 2.4.x)
|
|
*/
|
|
public function endTransaction(){
|
|
$this->transactionEnd();
|
|
}
|
|
|
|
/**
|
|
* Commit everything inside this transaction so far
|
|
*/
|
|
public function transactionEnd(){
|
|
if($this->mssql) {
|
|
DB::query('COMMIT TRANSACTION');
|
|
} else {
|
|
$result = sqlsrv_commit($this->dbConn);
|
|
if (!$result) $this->databaseError("Couldn't commit the transaction.", E_USER_ERROR);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Overload the Database::prepStringForDB() method and include "N" prefix so unicode
|
|
* strings are saved to the database correctly.
|
|
*
|
|
* @param string $string String to be encoded
|
|
* @return string Processed string ready for DB
|
|
*/
|
|
public function prepStringForDB($string) {
|
|
return "N'" . Convert::raw2sql($string) . "'";
|
|
}
|
|
|
|
/**
|
|
* Function to return an SQL datetime expression for MSSQL
|
|
* used for querying a datetime in a certain format
|
|
* @param string $date to be formated, can be either 'now', literal datetime like '1973-10-14 10:30:00' or field name, e.g. '"SiteTree"."Created"'
|
|
* @param string $format to be used, supported specifiers:
|
|
* %Y = Year (four digits)
|
|
* %m = Month (01..12)
|
|
* %d = Day (01..31)
|
|
* %H = Hour (00..23)
|
|
* %i = Minutes (00..59)
|
|
* %s = Seconds (00..59)
|
|
* %U = unix timestamp, can only be used on it's own
|
|
* @return string SQL datetime expression to query for a formatted datetime
|
|
*/
|
|
function formattedDatetimeClause($date, $format) {
|
|
preg_match_all('/%(.)/', $format, $matches);
|
|
foreach($matches[1] as $match) if(array_search($match, array('Y','m','d','H','i','s','U')) === false) user_error('formattedDatetimeClause(): unsupported format character %' . $match, E_USER_WARNING);
|
|
|
|
if(preg_match('/^now$/i', $date)) {
|
|
$date = "CURRENT_TIMESTAMP";
|
|
} else if(preg_match('/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}$/i', $date)) {
|
|
$date = "'$date.000'";
|
|
}
|
|
|
|
if($format == '%U') {
|
|
return "DATEDIFF(s, '1970-01-01 00:00:00', DATEADD(hour, DATEDIFF(hour, GETDATE(), GETUTCDATE()), $date))";
|
|
}
|
|
|
|
$trans = array(
|
|
'Y' => 'yy',
|
|
'm' => 'mm',
|
|
'd' => 'dd',
|
|
'H' => 'hh',
|
|
'i' => 'mi',
|
|
's' => 'ss',
|
|
);
|
|
|
|
$strings = array();
|
|
$buffer = $format;
|
|
while(strlen($buffer)) {
|
|
if(substr($buffer,0,1) == '%') {
|
|
$f = substr($buffer,1,1);
|
|
$flen = $f == 'Y' ? 4 : 2;
|
|
$strings[] = "RIGHT('0' + CAST(DATEPART({$trans[$f]},$date) AS VARCHAR), $flen)";
|
|
$buffer = substr($buffer, 2);
|
|
} else {
|
|
$pos = strpos($buffer, '%');
|
|
if($pos === false) {
|
|
$strings[] = $buffer;
|
|
$buffer = '';
|
|
} else {
|
|
$strings[] = "'".substr($buffer, 0, $pos)."'";
|
|
$buffer = substr($buffer, $pos);
|
|
}
|
|
}
|
|
}
|
|
|
|
return '(' . implode(' + ', $strings) . ')';
|
|
|
|
}
|
|
|
|
/**
|
|
* Function to return an SQL datetime expression for MSSQL.
|
|
* used for querying a datetime addition
|
|
* @param string $date, can be either 'now', literal datetime like '1973-10-14 10:30:00' or field name, e.g. '"SiteTree"."Created"'
|
|
* @param string $interval to be added, use the format [sign][integer] [qualifier], e.g. -1 Day, +15 minutes, +1 YEAR
|
|
* supported qualifiers:
|
|
* - years
|
|
* - months
|
|
* - days
|
|
* - hours
|
|
* - minutes
|
|
* - seconds
|
|
* This includes the singular forms as well
|
|
* @return string SQL datetime expression to query for a datetime (YYYY-MM-DD hh:mm:ss) which is the result of the addition
|
|
*/
|
|
function datetimeIntervalClause($date, $interval) {
|
|
$trans = array(
|
|
'year' => 'yy',
|
|
'month' => 'mm',
|
|
'day' => 'dd',
|
|
'hour' => 'hh',
|
|
'minute' => 'mi',
|
|
'second' => 'ss',
|
|
);
|
|
|
|
$singularinterval = preg_replace('/(year|month|day|hour|minute|second)s/i', '$1', $interval);
|
|
|
|
if(
|
|
!($params = preg_match('/([-+]\d+) (\w+)/i', $singularinterval, $matches)) ||
|
|
!isset($trans[strtolower($matches[2])])
|
|
) user_error('datetimeIntervalClause(): invalid interval ' . $interval, E_USER_WARNING);
|
|
|
|
if(preg_match('/^now$/i', $date)) {
|
|
$date = "CURRENT_TIMESTAMP";
|
|
} else if(preg_match('/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}$/i', $date)) {
|
|
$date = "'$date'";
|
|
}
|
|
|
|
return "CONVERT(VARCHAR, DATEADD(" . $trans[strtolower($matches[2])] . ", " . (int)$matches[1] . ", $date), 120)";
|
|
}
|
|
|
|
/**
|
|
* Function to return an SQL datetime expression for MSSQL.
|
|
* used for querying a datetime substraction
|
|
* @param string $date1, can be either 'now', literal datetime like '1973-10-14 10:30:00' or field name, e.g. '"SiteTree"."Created"'
|
|
* @param string $date2 to be substracted of $date1, can be either 'now', literal datetime like '1973-10-14 10:30:00' or field name, e.g. '"SiteTree"."Created"'
|
|
* @return string SQL datetime expression to query for the interval between $date1 and $date2 in seconds which is the result of the substraction
|
|
*/
|
|
function datetimeDifferenceClause($date1, $date2) {
|
|
|
|
if(preg_match('/^now$/i', $date1)) {
|
|
$date1 = "CURRENT_TIMESTAMP";
|
|
} else if(preg_match('/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}$/i', $date1)) {
|
|
$date1 = "'$date1'";
|
|
}
|
|
|
|
if(preg_match('/^now$/i', $date2)) {
|
|
$date2 = "CURRENT_TIMESTAMP";
|
|
} else if(preg_match('/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}$/i', $date2)) {
|
|
$date2 = "'$date2'";
|
|
}
|
|
|
|
return "DATEDIFF(s, $date2, $date1)";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* A result-set from a MSSQL database.
|
|
* @package sapphire
|
|
* @subpackage model
|
|
*/
|
|
class MSSQLQuery extends SS_Query {
|
|
|
|
/**
|
|
* The MSSQLDatabase object that created this result set.
|
|
* @var MSSQLDatabase
|
|
*/
|
|
private $database;
|
|
|
|
/**
|
|
* The internal MSSQL handle that points to the result set.
|
|
* @var resource
|
|
*/
|
|
private $handle;
|
|
|
|
/**
|
|
* If true, use the mssql_... functions.
|
|
* If false use the sqlsrv_... functions
|
|
*/
|
|
private $mssql = null;
|
|
|
|
/**
|
|
* 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 mssql handle that is points to the resultset.
|
|
*/
|
|
public function __construct(MSSQLDatabase $database, $handle, $mssql) {
|
|
$this->database = $database;
|
|
$this->handle = $handle;
|
|
$this->mssql = $mssql;
|
|
}
|
|
|
|
public function __destruct() {
|
|
if(is_resource($this->handle)) {
|
|
if($this->mssql) {
|
|
mssql_free_result($this->handle);
|
|
} else {
|
|
sqlsrv_free_stmt($this->handle);
|
|
}
|
|
}
|
|
}
|
|
|
|
public function seek($row) {
|
|
if(!is_resource($this->handle)) return false;
|
|
|
|
if($this->mssql) {
|
|
return mssql_data_seek($this->handle, $row);
|
|
} else {
|
|
user_error('MSSQLQuery::seek() not supported in sqlsrv', E_USER_WARNING);
|
|
}
|
|
}
|
|
|
|
public function numRecords() {
|
|
if(!is_resource($this->handle)) return false;
|
|
|
|
if($this->mssql) {
|
|
return mssql_num_rows($this->handle);
|
|
} else {
|
|
// WARNING: This will only work if the cursor type is scrollable!
|
|
if(function_exists('sqlsrv_num_rows')) {
|
|
return sqlsrv_num_rows($this->handle);
|
|
} else {
|
|
user_error('MSSQLQuery::numRecords() not supported in this version of sqlsrv', E_USER_WARNING);
|
|
}
|
|
}
|
|
}
|
|
|
|
public function nextRecord() {
|
|
if(!is_resource($this->handle)) return false;
|
|
|
|
if($this->mssql) {
|
|
if($row = mssql_fetch_row($this->handle)) {
|
|
foreach($row as $i => $value) {
|
|
$field = mssql_fetch_field($this->handle, $i);
|
|
|
|
// fix datetime formatting from format "Jan 1 2012 12:00:00:000AM" to "2012-01-01 12:00:00"
|
|
// strtotime doesn't understand this format, so we need to do some modification of the value first
|
|
if($field->type == 'datetime' && $value) {
|
|
$value = date('Y-m-d H:i:s', strtotime(preg_replace('/:[0-9][0-9][0-9]([ap]m)$/i', ' \\1', $value)));
|
|
}
|
|
|
|
if(isset($value) || !isset($data[$field->name])) {
|
|
$data[$field->name] = $value;
|
|
}
|
|
}
|
|
return $data;
|
|
}
|
|
} else {
|
|
if($data = sqlsrv_fetch_array($this->handle, SQLSRV_FETCH_ASSOC)) {
|
|
|
|
// special case for sqlsrv - date values are DateTime coming out of the sqlsrv drivers,
|
|
// so we convert to the usual Y-m-d H:i:s value!
|
|
foreach($data as $name => $value) {
|
|
if($value instanceof DateTime) $data[$name] = $value->format('Y-m-d H:i:s');
|
|
}
|
|
return $data;
|
|
} else {
|
|
// Free the handle if there are no more results - sqlsrv crashes if there are too many handles
|
|
sqlsrv_free_stmt($this->handle);
|
|
$this->handle = null;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
}
|