<?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\Common\DoctrineException;
/**
* The MySqlPlatform provides the behavior, features and SQL dialect of the
* MySQL database platform.
*
* @since 2.0
* @author Roman Borschel <roman@code-factory.org>
*/
class MySqlPlatform extends AbstractPlatform
{
/**
* Creates a new MySqlPlatform instance.
*/
public function __construct()
{
parent::__construct();
}
/**
* 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';
}
/**
* return string to call a function to get random value inside an SQL statement
*
* @return string to generate float between 0 and 1
*/
public function getRandomExpression()
{
return 'RAND()';
}
/**
* Builds a pattern matching string.
*
* EXPERIMENTAL
*
* WARNING: this function is experimental and may change signature at
* any time until labelled as non-experimental.
*
* @param array $pattern even keys are strings, odd are patterns (% and _)
* @param string $operator optional pattern operator (LIKE, ILIKE and maybe others in the future)
* @param string $field optional field name that is being matched against
* (might be required when emulating ILIKE)
*
* @return string SQL pattern
* @override
*/
public function getMatchPatternExpression($pattern, $operator = null, $field = null)
{
$match = '';
if ( ! is_null($operator)) {
$field = is_null($field) ? '' : $field.' ';
$operator = strtoupper($operator);
switch ($operator) {
// case insensitive
case 'ILIKE':
$match = $field.'LIKE ';
break;
// case sensitive
case 'LIKE':
$match = $field.'LIKE BINARY ';
break;
default:
throw DoctrineException::updateMe('not a supported operator type:'. $operator);
}
}
$match.= "'";
foreach ($pattern as $key => $value) {
if ($key % 2) {
$match .= $value;
} else {
$match .= $this->conn->escapePattern($this->conn->escape($value));
}
}
$match.= "'";
$match.= $this->patternEscapeString();
return $match;
}
/**
* Returns global unique identifier
*
* @return string to get global unique identifier
* @override
*/
public function getGuidExpression()
{
return 'UUID()';
}
/**
* 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) $args) . ')';
}
public function getListDatabasesSql()
{
return 'SHOW DATABASES';
}
public function getListSequencesSql($database)
{
$query = 'SHOW TABLES';
if ( ! is_null($database)) {
$query .= ' FROM ' . $this->quoteIdentifier($database);
}
return $query;
}
public function getListTableConstraintsSql($table)
{
return 'SHOW INDEX FROM ' . $this->quoteIdentifier($table);
}
public function getListTableIndexesSql($table)
{
return 'SHOW INDEX FROM ' . $this->quoteIdentifier($table);
}
public function getListUsersSql()
{
return "SELECT * FROM mysql.user WHERE user != '' GROUP BY user";
}
public function getListViewsSql($database = null)
{
if (is_null($database)) {
return 'SELECT * FROM information_schema.VIEWS';
} else {
return "SHOW FULL TABLES FROM " . $database . " WHERE Table_type = 'VIEW'";
}
}
public function getListTableForeignKeysSql($table, $database = null)
{
$sql = "SELECT column_name, REFERENCED_TABLE_NAME, REFERENCED_COLUMN_NAME FROM information_schema.key_column_usage WHERE 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 . ')' : 'TEXT');
}
public function getClobDeclarationSql(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';
}
/**
* Obtain DBMS specific SQL code portion needed to set the CHARACTER SET
* of a field declaration to be used in statements like CREATE TABLE.
*
* @param string $charset name of the charset
* @return string DBMS specific SQL code portion needed to set the CHARACTER SET
* of a field declaration.
*/
public function getCharsetFieldDeclaration($charset)
{
return 'CHARACTER SET ' . $charset;
}
/**
* @override
*/
public function getDateTimeTypeDeclarationSql(array $fieldDeclaration)
{
return 'DATETIME';
}
/**
* @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 ' . $collation;
}
/**
* Whether the platform prefers identity columns for ID generation.
* MySql prefers "autoincrement" identity columns since sequences can only
* be emulated with a table.
*
* @return boolean
* @override
*/
public function prefersIdentityColumns()
{
return true;
}
/**
* Whether the platform supports identity columns.
* MySql supports this through AUTO_INCREMENT columns.
*
* @return boolean
* @override
*/
public function supportsIdentityColumns()
{
return true;
}
/**
* Whether the platform supports savepoints. MySql does not.
*
* @return boolean
* @override
*/
public function supportsSavepoints()
{
return false;
}
public function getShowDatabasesSql()
{
return 'SHOW DATABASES';
}
public function getListTablesSql()
{
return 'SHOW TABLES';
}
public function getListTableColumnsSql($table)
{
return 'DESCRIBE ' . $this->quoteIdentifier($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 ' . $this->quoteIdentifier($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 ' . $this->quoteIdentifier($name);
}
/**
* 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 $options An associative array of table options:
* array(
* 'comment' => 'Foo',
* 'charset' => 'utf8',
* 'collate' => 'utf8_unicode_ci',
* 'type' => 'innodb',
* );
*
* @return void
* @override
*/
public function getCreateTableSql($name, array $fields, array $options = array())
{
if ( ! $name) {
throw DoctrineException::updateMe('no valid table name specified');
}
if (empty($fields)) {
throw DoctrineException::updateMe('no fields specified for table "'.$name.'"');
}
$queryFields = $this->getColumnDeclarationListSql($fields);
// build indexes for all foreign key fields (needed in MySQL!!)
if (isset($options['foreignKeys'])) {
foreach ($options['foreignKeys'] as $fk) {
$local = $fk['local'];
$found = false;
if (isset($options['indexes'])) {
foreach ($options['indexes'] as $definition) {
if (is_string($definition['fields'])) {
// Check if index already exists on the column
$found = ($local == $definition['fields']);
} else if (in_array($local, $definition['fields']) && count($definition['fields']) === 1) {
// Index already exists on the column
$found = true;
}
}
}
if (isset($options['primary']) && !empty($options['primary']) &&
in_array($local, $options['primary'])) {
// field is part of the PK and therefore already indexed
$found = true;
}
if ( ! $found) {
$options['indexes'][$local] = array('fields' => array($local => array()));
}
}
}
// add all indexes
if (isset($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']));
$keyColumns = array_map(array($this, 'quoteIdentifier'), $keyColumns);
$queryFields .= ', PRIMARY KEY(' . implode(', ', $keyColumns) . ')';
}
$query = 'CREATE ';
if (!empty($options['temporary'])) {
$query .= 'TEMPORARY ';
}
$query.= 'TABLE ' . $this->quoteIdentifier($name, true) . ' (' . $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'];
}
}
$type = false;
// get the type of the table
if (isset($options['type'])) {
$type = $options['type'];
}/* else {
$type = $this->getAttribute(Doctrine::ATTR_DEFAULT_TABLE_TYPE);
}*/
if ($type) {
$optionStrings[] = 'ENGINE = ' . $type;
}
if ( ! empty($optionStrings)) {
$query.= ' '.implode(' ', $optionStrings);
}
$sql[] = $query;
if (isset($options['foreignKeys'])) {
foreach ((array) $options['foreignKeys'] as $k => $definition) {
if (is_array($definition)) {
$sql[] = $this->getCreateForeignKeySql($name, $definition);
}
}
}
return $sql;
}
/**
* Gets the SQL to alter an existing table.
*
* @param string $name The name of the table that is intended to be changed.
* @param array $changes Associative array that contains the details of each type
* of change that is intended to be performed. The types of
* changes that are currently supported are defined as follows:
*
* name
*
* New name for the table.
*
* add
*
* Associative array with the names of fields to be added as
* indexes of the array. The value of each entry of the array
* should be set to another associative array with the properties
* of the fields to be added. The properties of the fields should
* be the same as defined by the Metabase parser.
*
*
* remove
*
* Associative array with the names of fields to be removed as indexes
* of the array. Currently the values assigned to each entry are ignored.
* An empty array should be used for future compatibility.
*
* rename
*
* Associative array with the names of fields to be renamed as indexes
* of the array. The value of each entry of the array should be set to
* another associative array with the entry named name with the new
* field name and the entry named Declaration that is expected to contain
* the portion of the field declaration already in DBMS specific SQL code
* as it is used in the CREATE TABLE statement.
*
* change
*
* Associative array with the names of the fields to be changed as indexes
* of the array. Keep in mind that if it is intended to change either the
* name of a field and any other properties, the change array entries
* should have the new names of the fields as array indexes.
*
* The value of each entry of the array should be set to another associative
* array with the properties of the fields to that are meant to be changed as
* array entries. These entries should be assigned to the new values of the
* respective properties. The properties of the fields should be the same
* as defined by the Metabase parser.
*
* Example
* array(
* 'name' => 'userlist',
* 'add' => array(
* 'quota' => array(
* 'type' => 'integer',
* 'unsigned' => 1
* )
* ),
* 'remove' => array(
* 'file_limit' => array(),
* 'time_limit' => array()
* ),
* 'change' => array(
* 'name' => array(
* 'length' => '20',
* 'definition' => array(
* 'type' => 'text',
* 'length' => 20,
* ),
* )
* ),
* 'rename' => array(
* 'sex' => array(
* 'name' => 'gender',
* 'definition' => array(
* 'type' => 'text',
* 'length' => 1,
* 'default' => 'M',
* ),
* )
* )
* )
*
* @param boolean $check indicates whether the function should just check if the DBMS driver
* can perform the requested table alterations if the value is true or
* actually perform them otherwise.
* @return boolean
* @override
*/
public function getAlterTableSql($name, array $changes, $check = false)
{
if ( ! $name) {
throw DoctrineException::updateMe('no valid table name specified');
}
foreach ($changes as $changeName => $change) {
switch ($changeName) {
case 'add':
case 'remove':
case 'change':
case 'rename':
case 'name':
break;
default:
throw DoctrineException::updateMe('change type "' . $changeName . '" not yet supported');
}
}
if ($check) {
return true;
}
$query = '';
if ( ! empty($changes['name'])) {
$change_name = $this->quoteIdentifier($changes['name']);
$query .= 'RENAME TO ' . $change_name;
}
if ( ! empty($changes['add']) && is_array($changes['add'])) {
foreach ($changes['add'] as $fieldName => $field) {
if ($query) {
$query.= ', ';
}
$query.= 'ADD ' . $this->getColumnDeclarationSql($fieldName, $field);
}
}
if ( ! empty($changes['remove']) && is_array($changes['remove'])) {
foreach ($changes['remove'] as $fieldName => $field) {
if ($query) {
$query .= ', ';
}
$fieldName = $this->quoteIdentifier($fieldName);
$query .= 'DROP ' . $fieldName;
}
}
$rename = array();
if ( ! empty($changes['rename']) && is_array($changes['rename'])) {
foreach ($changes['rename'] as $fieldName => $field) {
$rename[$field['name']] = $fieldName;
}
}
if ( ! empty($changes['change']) && is_array($changes['change'])) {
foreach ($changes['change'] as $fieldName => $field) {
if ($query) {
$query.= ', ';
}
if (isset($rename[$fieldName])) {
$oldFieldName = $rename[$fieldName];
unset($rename[$fieldName]);
} else {
$oldFieldName = $fieldName;
}
$oldFieldName = $this->quoteIdentifier($oldFieldName, true);
$query .= 'CHANGE ' . $oldFieldName . ' '
. $this->getColumnDeclarationSql($fieldName, $field['definition']);
}
}
if ( ! empty($rename) && is_array($rename)) {
foreach ($rename as $renameName => $renamedField) {
if ($query) {
$query.= ', ';
}
$field = $changes['rename'][$renamedField];
$renamedField = $this->quoteIdentifier($renamedField, true);
$query .= 'CHANGE ' . $renamedField . ' '
. $this->getColumnDeclarationSql($field['name'], $field['definition']);
}
}
if ( ! $query) {
return false;
}
$name = $this->quoteIdentifier($name, true);
return 'ALTER TABLE ' . $name . ' ' . $query;
}
/**
* Get the stucture of a field into an array
*
* @author Leoncx
* @param string $table name of the table on which the index is to be created
* @param string $name name of the index to be created
* @param array $definition associative array that defines properties of the index to be created.
* Currently, only one property named FIELDS is supported. This property
* is also an associative with the names of the index fields as array
* indexes. Each entry of this array is set to another type of associative
* array that specifies properties of the index that are specific to
* each field.
*
* Currently, only the sorting property is supported. It should be used
* to define the sorting direction of the index. It may be set to either
* ascending or descending.
*
* Not all DBMS support index sorting direction configuration. The DBMS
* drivers of those that do not support it ignore this property. Use the
* function supports() to determine whether the DBMS driver can manage indexes.
*
* Example
* array(
* 'fields' => array(
* 'user_name' => array(
* 'sorting' => 'ASC'
* 'length' => 10
* ),
* 'last_login' => array()
* )
* )
* @throws PDOException
* @return void
* @override
*/
public function getCreateIndexSql($table, $name, array $definition)
{
$table = $table;
$name = $this->quoteIdentifier($name);
$type = '';
if (isset($definition['type'])) {
switch (strtolower($definition['type'])) {
case 'fulltext':
case 'unique':
$type = strtoupper($definition['type']) . ' ';
break;
default:
throw DoctrineException::updateMe('Unknown index type ' . $definition['type']);
}
}
$query = 'CREATE ' . $type . 'INDEX ' . $name . ' ON ' . $table;
$query .= ' (' . $this->getIndexFieldDeclarationListSql($definition['fields']) . ')';
return $query;
}
/**
* 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;
}
/**
* Obtain DBMS specific SQL code portion needed to set an index
* declaration to be used in statements like CREATE TABLE.
*
* @param string $charset name of the index
* @param array $definition index definition
* @return string DBMS specific SQL code portion needed to set an index
* @override
*/
public function getIndexDeclarationSql($name, array $definition)
{
$type = '';
if (isset($definition['type'])) {
switch (strtolower($definition['type'])) {
case 'fulltext':
case 'unique':
$type = strtoupper($definition['type']) . ' ';
break;
default:
throw DoctrineException::updateMe('Unknown index type ' . $definition['type']);
}
}
if ( ! isset($definition['fields'])) {
throw DoctrineException::updateMe('No index columns given.');
}
if ( ! is_array($definition['fields'])) {
$definition['fields'] = array($definition['fields']);
}
$query = $type . 'INDEX ' . $this->quoteIdentifier($name);
$query .= ' (' . $this->getIndexFieldDeclarationListSql($definition['fields']) . ')';
return $query;
}
/**
* getIndexFieldDeclarationList
* Obtain DBMS specific SQL code portion needed to set an index
* declaration to be used in statements like CREATE TABLE.
*
* @return string
* @override
*/
public function getIndexFieldDeclarationListSql(array $fields)
{
$declFields = array();
foreach ($fields as $fieldName => $field) {
$fieldString = $this->quoteIdentifier($fieldName);
if (is_array($field)) {
if (isset($field['length'])) {
$fieldString .= '(' . $field['length'] . ')';
}
if (isset($field['sorting'])) {
$sort = strtoupper($field['sorting']);
switch ($sort) {
case 'ASC':
case 'DESC':
$fieldString .= ' ' . $sort;
break;
default:
throw DoctrineException::updateMe('Unknown index sorting option given.');
}
}
} else {
$fieldString = $this->quoteIdentifier($field);
}
$declFields[] = $fieldString;
}
return implode(', ', $declFields);
}
/**
* Return the FOREIGN KEY query section dealing with non-standard options
* as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
*
* @param array $definition
* @return string
* @override
*/
public function getAdvancedForeignKeyOptionsSql(array $definition)
{
$query = '';
if ( ! empty($definition['match'])) {
$query .= ' MATCH ' . $definition['match'];
}
if ( ! empty($definition['onUpdate'])) {
$query .= ' ON UPDATE ' . $this->getForeignKeyReferentialActionSql($definition['onUpdate']);
}
if ( ! empty($definition['onDelete'])) {
$query .= ' ON DELETE ' . $this->getForeignKeyReferentialActionSql($definition['onDelete']);
}
return $query;
}
/**
* Gets the SQL to drop an index of a table.
*
* @param string $table name of table that should be used in method
* @param string $name name of the index to be dropped
* @override
*/
public function getDropIndexSql($table, $name)
{
$table = $this->quoteIdentifier($table);
$name = $this->quoteIdentifier($name);
return 'DROP INDEX ' . $name . ' ON ' . $table;
}
/**
* Gets the SQL to drop a table.
*
* @param string $table The name of table to drop.
* @override
*/
public function getDropTableSql($table)
{
return 'DROP TABLE ' . $this->quoteIdentifier($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';
}
}