<?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,
Doctrine\DBAL\Schema\TableDiff;
/**
* The MySqlPlatform provides the behavior, features and SQL dialect of the
* MySQL database platform. This platform represents a MySQL 5.0 or greater platform that
* uses the InnoDB storage engine.
*
* @since 2.0
* @author Roman Borschel <roman@code-factory.org>
* @author Benjamin Eberlei <kontakt@beberlei.de>
* @todo Rename: MySQLPlatform
*/
class MySqlPlatform extends AbstractPlatform
{
/**
* Gets the character used for identifier quoting.
*
* @return string
* @override
*/
public function getIdentifierQuoteCharacter()
{
return '`';
}
/**
* Returns the regular expression operator.
*
* @return string
* @override
*/
public function getRegexpExpression()
{
return 'RLIKE';
}
/**
* Returns global unique identifier
*
* @return string to get global unique identifier
* @override
*/
public function getGuidExpression()
{
return 'UUID()';
}
/**
* 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(' . $substr . ', ' . $str . ')';
} else {
return 'LOCATE(' . $substr . ', ' . $str . ', '.$startPos.')';
}
}
/**
* Returns a series of strings concatinated
*
* concat() accepts an arbitrary number of parameters. Each parameter
* must contain an expression or an array with expressions.
*
* @param string|array(string) strings that will be concatinated.
* @override
*/
public function getConcatExpression()
{
$args = func_get_args();
return 'CONCAT(' . join(', ', (array) $args) . ')';
}
public function getListDatabasesSQL()
{
return 'SHOW DATABASES';
}
public function getListTableConstraintsSQL($table)
{
return 'SHOW INDEX FROM ' . $table;
}
public function getListTableIndexesSQL($table)
{
return 'SHOW INDEX FROM ' . $table;
}
public function getListViewsSQL($database)
{
return "SELECT * FROM information_schema.VIEWS WHERE TABLE_SCHEMA = '".$database."'";
}
public function getListTableForeignKeysSQL($table, $database = null)
{
$sql = "SELECT DISTINCT k.`CONSTRAINT_NAME`, k.`COLUMN_NAME`, k.`REFERENCED_TABLE_NAME`, ".
"k.`REFERENCED_COLUMN_NAME` /*!50116 , c.update_rule, c.delete_rule */ ".
"FROM information_schema.key_column_usage k /*!50116 ".
"INNER JOIN information_schema.referential_constraints c ON k.`CONSTRAINT_NAME` = c.constraint_name AND ".
" c.constraint_name = k.constraint_name AND ".
" c.table_name = '$table' */ WHERE k.table_name = '$table'";
if ( ! is_null($database)) {
$sql .= " AND table_schema = '$database'";
}
$sql .= " AND `REFERENCED_COLUMN_NAME` is not NULL";
return $sql;
}
public function getCreateViewSQL($name, $sql)
{
return 'CREATE VIEW ' . $name . ' AS ' . $sql;
}
public function getDropViewSQL($name)
{
return 'DROP VIEW '. $name;
}
/**
* Gets the SQL snippet used to declare a VARCHAR column on the MySql platform.
*
* @params array $field
*/
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 . ')' : 'VARCHAR(255)');
}
/** @override */
public function getClobTypeDeclarationSQL(array $field)
{
if ( ! empty($field['length'])) {
$length = $field['length'];
if ($length <= 255) {
return 'TINYTEXT';
} else if ($length <= 65532) {
return 'TEXT';
} else if ($length <= 16777215) {
return 'MEDIUMTEXT';
}
}
return 'LONGTEXT';
}
/**
* @override
*/
public function getDateTimeTypeDeclarationSQL(array $fieldDeclaration)
{
if (isset($fieldDeclaration['version']) && $fieldDeclaration['version'] == true) {
return 'TIMESTAMP';
} else {
return 'DATETIME';
}
}
/**
* @override
*/
public function getDateTypeDeclarationSQL(array $fieldDeclaration)
{
return 'DATE';
}
/**
* @override
*/
public function getTimeTypeDeclarationSQL(array $fieldDeclaration)
{
return 'TIME';
}
/**
* @override
*/
public function getBooleanTypeDeclarationSQL(array $field)
{
return 'TINYINT(1)';
}
/**
* Obtain DBMS specific SQL code portion needed to set the COLLATION
* of a field declaration to be used in statements like CREATE TABLE.
*
* @param string $collation name of the collation
* @return string DBMS specific SQL code portion needed to set the COLLATION
* of a field declaration.
*/
public function getCollationFieldDeclaration($collation)
{
return 'COLLATE ' . $collation;
}
/**
* Whether the platform prefers identity columns for ID generation.
* MySql prefers "autoincrement" identity columns since sequences can only
* be emulated with a table.
*
* @return boolean
* @override
*/
public function prefersIdentityColumns()
{
return true;
}
/**
* Whether the platform supports identity columns.
* MySql supports this through AUTO_INCREMENT columns.
*
* @return boolean
* @override
*/
public function supportsIdentityColumns()
{
return true;
}
/**
* Whether the platform supports savepoints. MySql does not.
*
* @return boolean
* @override
*/
public function supportsSavepoints()
{
return false;
}
public function getShowDatabasesSQL()
{
return 'SHOW DATABASES';
}
public function getListTablesSQL()
{
return 'SHOW FULL TABLES WHERE Table_type = "BASE TABLE"';
}
public function getListTableColumnsSQL($table)
{
return 'DESCRIBE ' . $table;
}
/**
* create a new database
*
* @param string $name name of the database that should be created
* @return string
* @override
*/
public function getCreateDatabaseSQL($name)
{
return 'CREATE DATABASE ' . $name;
}
/**
* drop an existing database
*
* @param string $name name of the database that should be dropped
* @return string
* @override
*/
public function getDropDatabaseSQL($name)
{
return 'DROP DATABASE ' . $name;
}
/**
* create a new table
*
* @param string $tableName Name of the database that should be created
* @param array $columns 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 $options An associative array of table options:
* array(
* 'comment' => 'Foo',
* 'charset' => 'utf8',
* 'collate' => 'utf8_unicode_ci',
* 'type' => 'innodb',
* );
*
* @return void
* @override
*/
protected function _getCreateTableSQL($tableName, array $columns, array $options = array())
{
$queryFields = $this->getColumnDeclarationListSQL($columns);
if (isset($options['uniqueConstraints']) && ! empty($options['uniqueConstraints'])) {
foreach ($options['uniqueConstraints'] as $index => $definition) {
$queryFields .= ', ' . $this->getUniqueConstraintDeclarationSQL($index, $definition);
}
}
// add all indexes
if (isset($options['indexes']) && ! empty($options['indexes'])) {
foreach($options['indexes'] as $index => $definition) {
$queryFields .= ', ' . $this->getIndexDeclarationSQL($index, $definition);
}
}
// attach all primary keys
if (isset($options['primary']) && ! empty($options['primary'])) {
$keyColumns = array_unique(array_values($options['primary']));
$queryFields .= ', PRIMARY KEY(' . implode(', ', $keyColumns) . ')';
}
$query = 'CREATE ';
if (!empty($options['temporary'])) {
$query .= 'TEMPORARY ';
}
$query.= 'TABLE ' . $tableName . ' (' . $queryFields . ')';
$optionStrings = array();
if (isset($options['comment'])) {
$optionStrings['comment'] = 'COMMENT = ' . $this->quote($options['comment'], 'text');
}
if (isset($options['charset'])) {
$optionStrings['charset'] = 'DEFAULT CHARACTER SET ' . $options['charset'];
if (isset($options['collate'])) {
$optionStrings['charset'] .= ' COLLATE ' . $options['collate'];
}
}
// get the type of the table
if (isset($options['engine'])) {
$optionStrings[] = 'ENGINE = ' . $engine;
} else {
// default to innodb
$optionStrings[] = 'ENGINE = InnoDB';
}
if ( ! empty($optionStrings)) {
$query.= ' '.implode(' ', $optionStrings);
}
$sql[] = $query;
if (isset($options['foreignKeys'])) {
foreach ((array) $options['foreignKeys'] as $definition) {
$sql[] = $this->getCreateForeignKeySQL($definition, $tableName);
}
}
return $sql;
}
/**
* Gets the SQL to alter an existing table.
*
* @param TableDiff $diff
* @return array
*/
public function getAlterTableSQL(TableDiff $diff)
{
$queryParts = array();
if ($diff->newName !== false) {
$queryParts[] = 'RENAME TO ' . $diff->newName;
}
foreach ($diff->addedColumns AS $fieldName => $column) {
$queryParts[] = 'ADD ' . $this->getColumnDeclarationSQL($column->getName(), $column->toArray());
}
foreach ($diff->removedColumns AS $column) {
$queryParts[] = 'DROP ' . $column->getName();
}
foreach ($diff->changedColumns AS $columnDiff) {
/* @var $columnDiff Doctrine\DBAL\Schema\ColumnDiff */
$column = $columnDiff->column;
$queryParts[] = 'CHANGE ' . ($columnDiff->oldColumnName) . ' '
. $this->getColumnDeclarationSQL($column->getName(), $column->toArray());
}
foreach ($diff->renamedColumns AS $oldColumnName => $column) {
$queryParts[] = 'CHANGE ' . $oldColumnName . ' '
. $this->getColumnDeclarationSQL($column->getName(), $column->toArray());
}
$sql = array();
if (count($queryParts) > 0) {
$sql[] = 'ALTER TABLE ' . $diff->name . ' ' . implode(", ", $queryParts);
}
$sql = array_merge($sql, $this->_getAlterTableIndexForeignKeySQL($diff));
return $sql;
}
/**
* Obtain DBMS specific SQL code portion needed to declare an integer type
* field to be used in statements like CREATE TABLE.
*
* @param string $name name the field to be declared.
* @param string $field associative array with the name of the properties
* of the field being declared as array indexes.
* Currently, the types of supported field
* properties are as follows:
*
* unsigned
* Boolean flag that indicates whether the field
* should be declared as unsigned integer if
* possible.
*
* default
* Integer value to be used as default for this
* field.
*
* notnull
* Boolean flag that indicates whether this field is
* constrained to not be set to null.
* @return string DBMS specific SQL code portion that should be used to
* declare the specified field.
* @override
*/
public function getIntegerTypeDeclarationSQL(array $field)
{
return 'INT' . $this->_getCommonIntegerTypeDeclarationSQL($field);
}
/** @override */
public function getBigIntTypeDeclarationSQL(array $field)
{
return 'BIGINT' . $this->_getCommonIntegerTypeDeclarationSQL($field);
}
/** @override */
public function getSmallIntTypeDeclarationSQL(array $field)
{
return 'SMALLINT' . $this->_getCommonIntegerTypeDeclarationSQL($field);
}
/** @override */
protected function _getCommonIntegerTypeDeclarationSQL(array $columnDef)
{
$autoinc = '';
if ( ! empty($columnDef['autoincrement'])) {
$autoinc = ' AUTO_INCREMENT';
}
$unsigned = (isset($columnDef['unsigned']) && $columnDef['unsigned']) ? ' UNSIGNED' : '';
return $unsigned . $autoinc;
}
/**
* Return the FOREIGN KEY query section dealing with non-standard options
* as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
*
* @param ForeignKeyConstraint $foreignKey
* @return string
* @override
*/
public function getAdvancedForeignKeyOptionsSQL(\Doctrine\DBAL\Schema\ForeignKeyConstraint $foreignKey)
{
$query = '';
if ($foreignKey->hasOption('match')) {
$query .= ' MATCH ' . $foreignKey->getOption('match');
}
$query .= parent::getAdvancedForeignKeyOptionsSQL($foreignKey);
return $query;
}
/**
* Gets the SQL to drop an index of a table.
*
* @param Index $index name of the index to be dropped
* @param string|Table $table name of table that should be used in method
* @override
*/
public function getDropIndexSQL($index, $table=null)
{
if($index instanceof \Doctrine\DBAL\Schema\Index) {
$index = $index->getName();
} else if(!is_string($index)) {
throw new \InvalidArgumentException('MysqlPlatform::getDropIndexSQL() expects $index parameter to be string or \Doctrine\DBAL\Schema\Index.');
}
if($table instanceof \Doctrine\DBAL\Schema\Table) {
$table = $table->getName();
} else if(!is_string($table)) {
throw new \InvalidArgumentException('MysqlPlatform::getDropIndexSQL() expects $table parameter to be string or \Doctrine\DBAL\Schema\Table.');
}
return 'DROP INDEX ' . $index . ' ON ' . $table;
}
/**
* Gets the SQL to drop a table.
*
* @param string $table The name of table to drop.
* @override
*/
public function getDropTableSQL($table)
{
if ($table instanceof \Doctrine\DBAL\Schema\Table) {
$table = $table->getName();
} else if(!is_string($table)) {
throw new \InvalidArgumentException('MysqlPlatform::getDropTableSQL() expects $table parameter to be string or \Doctrine\DBAL\Schema\Table.');
}
return 'DROP TABLE ' . $table;
}
public function getSetTransactionIsolationSQL($level)
{
return 'SET SESSION TRANSACTION ISOLATION LEVEL ' . $this->_getTransactionIsolationLevelSQL($level);
}
/**
* Get the platform name for this instance.
*
* @return string
*/
public function getName()
{
return 'mysql';
}
public function createsExplicitIndexForForeignKeys()
{
return true;
}
}