432 lines
13 KiB
PHP
432 lines
13 KiB
PHP
<?php
|
|
/*
|
|
* $Id$
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* This software consists of voluntary contributions made by many individuals
|
|
* and is licensed under the LGPL. For more information, see
|
|
* <http://www.doctrine-project.org>.
|
|
*/
|
|
|
|
namespace Doctrine\DBAL\Platforms;
|
|
|
|
use Doctrine\DBAL\DBALException;
|
|
|
|
/**
|
|
* The SqlitePlatform class describes the specifics and dialects of the SQLite
|
|
* database platform.
|
|
*
|
|
* @since 2.0
|
|
* @author Roman Borschel <roman@code-factory.org>
|
|
* @author Benjamin Eberlei <kontakt@beberlei.de>
|
|
* @todo Rename: SQLitePlatform
|
|
*/
|
|
class SqlitePlatform extends AbstractPlatform
|
|
{
|
|
/**
|
|
* returns the regular expression operator
|
|
*
|
|
* @return string
|
|
* @override
|
|
*/
|
|
public function getRegexpExpression()
|
|
{
|
|
return 'RLIKE';
|
|
}
|
|
|
|
/**
|
|
* Return string to call a variable with the current timestamp inside an SQL statement
|
|
* There are three special variables for current date and time.
|
|
*
|
|
* @return string sqlite function as string
|
|
* @override
|
|
*/
|
|
public function getNowExpression($type = 'timestamp')
|
|
{
|
|
switch ($type) {
|
|
case 'time':
|
|
return 'time(\'now\')';
|
|
case 'date':
|
|
return 'date(\'now\')';
|
|
case 'timestamp':
|
|
default:
|
|
return 'datetime(\'now\')';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Trim a string, leading/trailing/both and with a given char which defaults to space.
|
|
*
|
|
* @param string $str
|
|
* @param int $pos
|
|
* @param string $char
|
|
* @return string
|
|
*/
|
|
public function getTrimExpression($str, $pos = self::TRIM_UNSPECIFIED, $char = false)
|
|
{
|
|
$trimFn = '';
|
|
$trimChar = ($char != false) ? (', ' . $char) : '';
|
|
|
|
if ($pos == self::TRIM_LEADING) {
|
|
$trimFn = 'LTRIM';
|
|
} else if($pos == self::TRIM_TRAILING) {
|
|
$trimFn = 'RTRIM';
|
|
} else {
|
|
$trimFn = 'TRIM';
|
|
}
|
|
|
|
return $trimFn . '(' . $str . $trimChar . ')';
|
|
}
|
|
|
|
/**
|
|
* return string to call a function to get a substring inside an SQL statement
|
|
*
|
|
* Note: Not SQL92, but common functionality.
|
|
*
|
|
* SQLite only supports the 2 parameter variant of this function
|
|
*
|
|
* @param string $value an sql string literal or column name/alias
|
|
* @param integer $position where to start the substring portion
|
|
* @param integer $length the substring portion length
|
|
* @return string SQL substring function with given parameters
|
|
* @override
|
|
*/
|
|
public function getSubstringExpression($value, $position, $length = null)
|
|
{
|
|
if ($length !== null) {
|
|
return 'SUBSTR(' . $value . ', ' . $position . ', ' . $length . ')';
|
|
}
|
|
return 'SUBSTR(' . $value . ', ' . $position . ', LENGTH(' . $value . '))';
|
|
}
|
|
|
|
/**
|
|
* returns the position of the first occurrence of substring $substr in string $str
|
|
*
|
|
* @param string $substr literal string to find
|
|
* @param string $str literal string
|
|
* @param int $pos position to start at, beginning of string by default
|
|
* @return integer
|
|
*/
|
|
public function getLocateExpression($str, $substr, $startPos = false)
|
|
{
|
|
if ($startPos == false) {
|
|
return 'LOCATE('.$str.', '.$substr.')';
|
|
} else {
|
|
return 'LOCATE('.$str.', '.$substr.', '.$startPos.')';
|
|
}
|
|
}
|
|
|
|
protected function _getTransactionIsolationLevelSQL($level)
|
|
{
|
|
switch ($level) {
|
|
case \Doctrine\DBAL\Connection::TRANSACTION_READ_UNCOMMITTED:
|
|
return 0;
|
|
case \Doctrine\DBAL\Connection::TRANSACTION_READ_COMMITTED:
|
|
case \Doctrine\DBAL\Connection::TRANSACTION_REPEATABLE_READ:
|
|
case \Doctrine\DBAL\Connection::TRANSACTION_SERIALIZABLE:
|
|
return 1;
|
|
default:
|
|
return parent::_getTransactionIsolationLevelSQL($level);
|
|
}
|
|
}
|
|
|
|
public function getSetTransactionIsolationSQL($level)
|
|
{
|
|
return 'PRAGMA read_uncommitted = ' . $this->_getTransactionIsolationLevelSQL($level);
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function prefersIdentityColumns()
|
|
{
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getBooleanTypeDeclarationSQL(array $field)
|
|
{
|
|
return 'BOOLEAN';
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getIntegerTypeDeclarationSQL(array $field)
|
|
{
|
|
return $this->_getCommonIntegerTypeDeclarationSQL($field);
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getBigIntTypeDeclarationSQL(array $field)
|
|
{
|
|
return $this->_getCommonIntegerTypeDeclarationSQL($field);
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getTinyIntTypeDeclarationSql(array $field)
|
|
{
|
|
return $this->_getCommonIntegerTypeDeclarationSQL($field);
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getSmallIntTypeDeclarationSQL(array $field)
|
|
{
|
|
return $this->_getCommonIntegerTypeDeclarationSQL($field);
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getMediumIntTypeDeclarationSql(array $field)
|
|
{
|
|
return $this->_getCommonIntegerTypeDeclarationSQL($field);
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getDateTimeTypeDeclarationSQL(array $fieldDeclaration)
|
|
{
|
|
return 'DATETIME';
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getDateTypeDeclarationSQL(array $fieldDeclaration)
|
|
{
|
|
return 'DATE';
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getTimeTypeDeclarationSQL(array $fieldDeclaration)
|
|
{
|
|
return 'TIME';
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
protected function _getCommonIntegerTypeDeclarationSQL(array $columnDef)
|
|
{
|
|
$autoinc = ! empty($columnDef['autoincrement']) ? ' AUTOINCREMENT' : '';
|
|
$pk = ! empty($columnDef['primary']) && ! empty($autoinc) ? ' PRIMARY KEY' : '';
|
|
|
|
return 'INTEGER' . $pk . $autoinc;
|
|
}
|
|
|
|
/**
|
|
* create a new table
|
|
*
|
|
* @param string $name Name of the database that should be created
|
|
* @param array $fields Associative array that contains the definition of each field of the new table
|
|
* The indexes of the array entries are the names of the fields of the table an
|
|
* the array entry values are associative arrays like those that are meant to be
|
|
* passed with the field definitions to get[Type]Declaration() functions.
|
|
* array(
|
|
* 'id' => array(
|
|
* 'type' => 'integer',
|
|
* 'unsigned' => 1
|
|
* 'notnull' => 1
|
|
* 'default' => 0
|
|
* ),
|
|
* 'name' => array(
|
|
* 'type' => 'text',
|
|
* 'length' => 12
|
|
* ),
|
|
* 'password' => array(
|
|
* 'type' => 'text',
|
|
* 'length' => 12
|
|
* )
|
|
* );
|
|
* @param array $options An associative array of table options:
|
|
*
|
|
* @return void
|
|
* @override
|
|
*/
|
|
protected function _getCreateTableSQL($name, array $columns, array $options = array())
|
|
{
|
|
$queryFields = $this->getColumnDeclarationListSQL($columns);
|
|
|
|
$autoinc = false;
|
|
foreach($columns as $field) {
|
|
if (isset($field['autoincrement']) && $field['autoincrement']) {
|
|
$autoinc = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( ! $autoinc && isset($options['primary']) && ! empty($options['primary'])) {
|
|
$keyColumns = array_unique(array_values($options['primary']));
|
|
$keyColumns = array_map(array($this, 'quoteIdentifier'), $keyColumns);
|
|
$queryFields.= ', PRIMARY KEY('.implode(', ', $keyColumns).')';
|
|
}
|
|
|
|
$query[] = 'CREATE TABLE ' . $name . ' (' . $queryFields . ')';
|
|
|
|
if (isset($options['indexes']) && ! empty($options['indexes'])) {
|
|
foreach ($options['indexes'] as $index => $indexDef) {
|
|
$query[] = $this->getCreateIndexSQL($indexDef, $name);
|
|
}
|
|
}
|
|
if (isset($options['unique']) && ! empty($options['unique'])) {
|
|
foreach ($options['unique'] as $index => $indexDef) {
|
|
$query[] = $this->getCreateIndexSQL($indexDef, $name);
|
|
}
|
|
}
|
|
return $query;
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function getVarcharTypeDeclarationSQL(array $field)
|
|
{
|
|
if ( ! isset($field['length'])) {
|
|
if (array_key_exists('default', $field)) {
|
|
$field['length'] = $this->getVarcharMaxLength();
|
|
} else {
|
|
$field['length'] = false;
|
|
}
|
|
}
|
|
$length = ($field['length'] <= $this->getVarcharMaxLength()) ? $field['length'] : false;
|
|
$fixed = (isset($field['fixed'])) ? $field['fixed'] : false;
|
|
|
|
return $fixed ? ($length ? 'CHAR(' . $length . ')' : 'CHAR(255)')
|
|
: ($length ? 'VARCHAR(' . $length . ')' : 'TEXT');
|
|
}
|
|
|
|
public function getClobTypeDeclarationSQL(array $field)
|
|
{
|
|
return 'CLOB';
|
|
}
|
|
|
|
public function getListTableConstraintsSQL($table)
|
|
{
|
|
return "SELECT sql FROM sqlite_master WHERE type='index' AND tbl_name = '$table' AND sql NOT NULL ORDER BY name";
|
|
}
|
|
|
|
public function getListTableColumnsSQL($table)
|
|
{
|
|
return "PRAGMA table_info($table)";
|
|
}
|
|
|
|
public function getListTableIndexesSQL($table)
|
|
{
|
|
return "PRAGMA index_list($table)";
|
|
}
|
|
|
|
public function getListTablesSQL()
|
|
{
|
|
return "SELECT name FROM sqlite_master WHERE type = 'table' AND name != 'sqlite_sequence' "
|
|
. "UNION ALL SELECT name FROM sqlite_temp_master "
|
|
. "WHERE type = 'table' ORDER BY name";
|
|
}
|
|
|
|
public function getListViewsSQL($database)
|
|
{
|
|
return "SELECT name, sql FROM sqlite_master WHERE type='view' AND sql NOT NULL";
|
|
}
|
|
|
|
public function getCreateViewSQL($name, $sql)
|
|
{
|
|
return 'CREATE VIEW ' . $name . ' AS ' . $sql;
|
|
}
|
|
|
|
public function getDropViewSQL($name)
|
|
{
|
|
return 'DROP VIEW '. $name;
|
|
}
|
|
|
|
/**
|
|
* SQLite does support foreign key constraints, but only in CREATE TABLE statements...
|
|
* This really limits their usefulness and requires SQLite specific handling, so
|
|
* we simply say that SQLite does NOT support foreign keys for now...
|
|
*
|
|
* @return boolean FALSE
|
|
* @override
|
|
*/
|
|
public function supportsForeignKeyConstraints()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
public function supportsAlterTable()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Get the platform name for this instance
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getName()
|
|
{
|
|
return 'sqlite';
|
|
}
|
|
|
|
/**
|
|
* @inheritdoc
|
|
*/
|
|
public function getTruncateTableSQL($tableName, $cascade = false)
|
|
{
|
|
return 'DELETE FROM '.$tableName;
|
|
}
|
|
|
|
/**
|
|
* User-defined function for Sqlite that is used with PDO::sqliteCreateFunction()
|
|
*
|
|
* @param int|float $value
|
|
* @return float
|
|
*/
|
|
static public function udfSqrt($value)
|
|
{
|
|
return sqrt($value);
|
|
}
|
|
|
|
/**
|
|
* User-defined function for Sqlite that implements MOD(a, b)
|
|
*/
|
|
static public function udfMod($a, $b)
|
|
{
|
|
return ($a % $b);
|
|
}
|
|
|
|
/**
|
|
* @param string $str
|
|
* @param string $substr
|
|
* @param int $offset
|
|
*/
|
|
static public function udfLocate($str, $substr, $offset = 0)
|
|
{
|
|
$pos = strpos($str, $substr, $offset);
|
|
if ($pos !== false) {
|
|
return $pos+1;
|
|
}
|
|
return 0;
|
|
}
|
|
}
|