631 lines
19 KiB
PHP
631 lines
19 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.doctrine-project.org>.
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*/
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namespace Doctrine\DBAL\Platforms;
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use Doctrine\DBAL\Schema\TableDiff;
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/**
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* OraclePlatform.
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*
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* @since 2.0
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* @author Roman Borschel <roman@code-factory.org>
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* @author Lukas Smith <smith@pooteeweet.org> (PEAR MDB2 library)
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* @author Benjamin Eberlei <kontakt@beberlei.de>
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*/
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class OraclePlatform extends AbstractPlatform
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{
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/**
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* Constructor.
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*/
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public function __construct()
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{
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parent::__construct();
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}
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/**
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* return string to call a function to get a substring inside an SQL statement
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*
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* Note: Not SQL92, but common functionality.
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*
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* @param string $value an sql string literal or column name/alias
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* @param integer $position where to start the substring portion
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* @param integer $length the substring portion length
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* @return string SQL substring function with given parameters
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* @override
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*/
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public function getSubstringExpression($value, $position, $length = null)
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{
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if ($length !== null) {
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return "SUBSTR($value, $position, $length)";
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}
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return "SUBSTR($value, $position)";
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}
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/**
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* Return string to call a variable with the current timestamp inside an SQL statement
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* There are three special variables for current date and time:
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* - CURRENT_TIMESTAMP (date and time, TIMESTAMP type)
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* - CURRENT_DATE (date, DATE type)
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* - CURRENT_TIME (time, TIME type)
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*
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* @return string to call a variable with the current timestamp
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* @override
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*/
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public function getNowExpression($type = 'timestamp')
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{
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switch ($type) {
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case 'date':
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case 'time':
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case 'timestamp':
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default:
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return 'TO_CHAR(CURRENT_TIMESTAMP, \'YYYY-MM-DD HH24:MI:SS\')';
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}
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}
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/**
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* random
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*
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* @return string an oracle SQL string that generates a float between 0 and 1
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* @override
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*/
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public function getRandomExpression()
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{
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return 'dbms_random.value';
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}
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/**
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* Returns global unique identifier
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*
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* @return string to get global unique identifier
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* @override
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*/
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public function getGuidExpression()
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{
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return 'SYS_GUID()';
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}
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/**
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* Gets the SQL used to create a sequence that starts with a given value
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* and increments by the given allocation size.
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*
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* Need to specifiy minvalue, since start with is hidden in the system and MINVALUE <= START WITH.
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* Therefore we can use MINVALUE to be able to get a hint what START WITH was for later introspection
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* in {@see listSequences()}
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*
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* @param \Doctrine\DBAL\Schema\Sequence $sequence
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* @throws DoctrineException
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*/
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public function getCreateSequenceSql(\Doctrine\DBAL\Schema\Sequence $sequence)
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{
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return 'CREATE SEQUENCE ' . $sequence->getName() .
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' START WITH ' . $sequence->getInitialValue() .
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' MINVALUE ' . $sequence->getInitialValue() .
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' INCREMENT BY ' . $sequence->getAllocationSize();
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}
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/**
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* {@inheritdoc}
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*
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* @param string $sequenceName
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* @override
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*/
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public function getSequenceNextValSql($sequenceName)
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{
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return 'SELECT ' . $sequenceName . '.nextval FROM DUAL';
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}
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/**
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* {@inheritdoc}
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*
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* @param integer $level
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* @override
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*/
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public function getSetTransactionIsolationSql($level)
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{
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return 'SET TRANSACTION ISOLATION LEVEL ' . $this->_getTransactionIsolationLevelSql($level);
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}
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protected function _getTransactionIsolationLevelSql($level)
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{
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switch ($level) {
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case \Doctrine\DBAL\Connection::TRANSACTION_READ_UNCOMMITTED:
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return 'READ UNCOMMITTED';
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case \Doctrine\DBAL\Connection::TRANSACTION_READ_COMMITTED:
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return 'READ COMMITTED';
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case \Doctrine\DBAL\Connection::TRANSACTION_REPEATABLE_READ:
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case \Doctrine\DBAL\Connection::TRANSACTION_SERIALIZABLE:
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return 'SERIALIZABLE';
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default:
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return parent::_getTransactionIsolationLevelSql($level);
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}
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}
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/**
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* @override
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*/
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public function getBooleanTypeDeclarationSql(array $field)
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{
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return 'NUMBER(1)';
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}
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/**
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* @override
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*/
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public function getIntegerTypeDeclarationSql(array $field)
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{
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return 'NUMBER(10)';
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}
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/**
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* @override
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*/
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public function getBigIntTypeDeclarationSql(array $field)
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{
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return 'NUMBER(20)';
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}
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/**
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* @override
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*/
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public function getSmallIntTypeDeclarationSql(array $field)
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{
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return 'NUMBER(5)';
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}
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/**
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* @override
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*/
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public function getDateTimeTypeDeclarationSql(array $fieldDeclaration)
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{
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return 'TIMESTAMP(0) WITH TIME ZONE';
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}
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/**
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* @override
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*/
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public function getDateTypeDeclarationSql(array $fieldDeclaration)
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{
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return 'DATE';
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}
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/**
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* @override
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*/
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public function getTimeTypeDeclarationSql(array $fieldDeclaration)
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{
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return 'DATE';
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}
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/**
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* @override
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*/
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protected function _getCommonIntegerTypeDeclarationSql(array $columnDef)
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{
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return '';
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}
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/**
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* Gets the SQL snippet used to declare a VARCHAR column on the Oracle platform.
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*
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* @params array $field
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* @override
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*/
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public function getVarcharTypeDeclarationSql(array $field)
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{
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if ( ! isset($field['length'])) {
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if (array_key_exists('default', $field)) {
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$field['length'] = $this->getVarcharMaxLength();
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} else {
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$field['length'] = false;
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}
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}
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$length = ($field['length'] <= $this->getVarcharMaxLength()) ? $field['length'] : false;
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$fixed = (isset($field['fixed'])) ? $field['fixed'] : false;
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return $fixed ? ($length ? 'CHAR(' . $length . ')' : 'CHAR(2000)')
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: ($length ? 'VARCHAR2(' . $length . ')' : 'VARCHAR2(4000)');
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}
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/** @override */
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public function getClobTypeDeclarationSql(array $field)
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{
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return 'CLOB';
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}
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public function getListDatabasesSql()
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{
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return 'SELECT username FROM all_users';
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}
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public function getListFunctionsSql()
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{
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return "SELECT name FROM sys.user_source WHERE line = 1 AND type = 'FUNCTION'";
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}
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public function getListSequencesSql($database)
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{
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return "SELECT sequence_name, min_value, increment_by FROM sys.all_sequences ".
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"WHERE SEQUENCE_OWNER = '".strtoupper($database)."'";
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}
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/**
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*
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* @param string $table
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* @param array $columns
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* @param array $options
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* @return array
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*/
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protected function _getCreateTableSql($table, array $columns, array $options = array())
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{
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$indexes = isset($options['indexes']) ? $options['indexes'] : array();
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$options['indexes'] = array();
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$sql = parent::_getCreateTableSql($table, $columns, $options);
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foreach ($columns as $name => $column) {
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if (isset($column['sequence'])) {
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$sql[] = $this->getCreateSequenceSql($column['sequence'], 1);
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}
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if (isset($column['autoincrement']) && $column['autoincrement'] ||
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(isset($column['autoinc']) && $column['autoinc'])) {
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$sql = array_merge($sql, $this->getCreateAutoincrementSql($name, $table));
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}
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}
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if (isset($indexes) && ! empty($indexes)) {
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foreach ($indexes as $indexName => $index) {
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$sql[] = $this->getCreateIndexSql($index, $table);
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}
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}
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return $sql;
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}
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/**
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* @license New BSD License
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* @link http://ezcomponents.org/docs/api/trunk/DatabaseSchema/ezcDbSchemaOracleReader.html
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* @param string $table
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* @return string
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*/
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public function getListTableIndexesSql($table)
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{
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$table = strtoupper($table);
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return "SELECT uind.index_name AS name, " .
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" uind.index_type AS type, " .
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" decode( uind.uniqueness, 'NONUNIQUE', 0, 'UNIQUE', 1 ) AS is_unique, " .
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" uind_col.column_name AS column_name, " .
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" uind_col.column_position AS column_pos, " .
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" (SELECT ucon.constraint_type FROM user_constraints ucon WHERE ucon.constraint_name = uind.index_name) AS is_primary ".
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"FROM user_indexes uind, user_ind_columns uind_col " .
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"WHERE uind.index_name = uind_col.index_name AND uind_col.table_name = '$table' ORDER BY uind_col.column_position ASC";
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}
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public function getListTablesSql()
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{
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return 'SELECT * FROM sys.user_tables';
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}
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public function getListUsersSql()
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{
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return 'SELECT * FROM all_users';
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}
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public function getListViewsSql()
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{
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return 'SELECT view_name FROM sys.user_views';
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}
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public function getCreateViewSql($name, $sql)
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{
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return 'CREATE VIEW ' . $name . ' AS ' . $sql;
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}
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public function getDropViewSql($name)
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{
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return 'DROP VIEW '. $name;
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}
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public function getCreateAutoincrementSql($name, $table, $start = 1)
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{
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$table = strtoupper($table);
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$sql = array();
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$indexName = $table . '_AI_PK';
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$definition = array(
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'primary' => true,
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'columns' => array($name => true),
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);
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$idx = new \Doctrine\DBAL\Schema\Index($indexName, array($name), true, true);
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$sql[] = 'DECLARE
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constraints_Count NUMBER;
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BEGIN
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SELECT COUNT(CONSTRAINT_NAME) INTO constraints_Count FROM USER_CONSTRAINTS WHERE TABLE_NAME = \''.$table.'\' AND CONSTRAINT_TYPE = \'P\';
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IF constraints_Count = 0 OR constraints_Count = \'\' THEN
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EXECUTE IMMEDIATE \''.$this->getCreateConstraintSql($idx, $table).'\';
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END IF;
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END;';
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$sequenceName = $table . '_SEQ';
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$sequence = new \Doctrine\DBAL\Schema\Sequence($sequenceName, $start);
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$sql[] = $this->getCreateSequenceSql($sequence);
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$triggerName = $table . '_AI_PK';
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$sql[] = 'CREATE TRIGGER ' . $triggerName . '
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BEFORE INSERT
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ON ' . $table . '
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FOR EACH ROW
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DECLARE
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last_Sequence NUMBER;
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last_InsertID NUMBER;
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BEGIN
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SELECT ' . $sequenceName . '.NEXTVAL INTO :NEW.' . $name . ' FROM DUAL;
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IF (:NEW.' . $name . ' IS NULL OR :NEW.'.$name.' = 0) THEN
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SELECT ' . $sequenceName . '.NEXTVAL INTO :NEW.' . $name . ' FROM DUAL;
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ELSE
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SELECT NVL(Last_Number, 0) INTO last_Sequence
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FROM User_Sequences
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WHERE Sequence_Name = \'' . $sequenceName . '\';
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SELECT :NEW.' . $name . ' INTO last_InsertID FROM DUAL;
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WHILE (last_InsertID > last_Sequence) LOOP
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SELECT ' . $sequenceName . '.NEXTVAL INTO last_Sequence FROM DUAL;
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END LOOP;
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END IF;
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END;';
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return $sql;
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}
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public function getDropAutoincrementSql($table)
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{
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$table = strtoupper($table);
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$trigger = $table . '_AI_PK';
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if ($trigger) {
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$sql[] = 'DROP TRIGGER ' . $trigger;
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$sql[] = $this->getDropSequenceSql($table.'_SEQ');
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$indexName = $table . '_AI_PK';
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$sql[] = $this->getDropConstraintSql($indexName, $table);
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}
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return $sql;
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}
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public function getListTableForeignKeysSql($table)
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{
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$table = strtoupper($table);
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return "SELECT rel.constraint_name, rel.position, col.column_name AS local_column, ".
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" rel.table_name, rel.column_name AS foreign_column, cc.delete_rule ".
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"FROM (user_tab_columns col ".
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"JOIN user_cons_columns con ".
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" ON col.table_name = con.table_name ".
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" AND col.column_name = con.column_name ".
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"JOIN user_constraints cc ".
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" ON con.constraint_name = cc.constraint_name ".
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"JOIN user_cons_columns rel ".
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" ON cc.r_constraint_name = rel.constraint_name ".
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" AND con.position = rel.position) ".
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"WHERE cc.constraint_type = 'R' AND col.table_name = '".$table."'";
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}
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public function getListTableConstraintsSql($table)
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{
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$table = strtoupper($table);
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return 'SELECT * FROM user_constraints WHERE table_name = \'' . $table . '\'';
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}
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public function getListTableColumnsSql($table)
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{
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$table = strtoupper($table);
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return "SELECT * FROM all_tab_columns WHERE table_name = '" . $table . "' ORDER BY column_name";
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}
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|
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/**
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*
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* @param \Doctrine\DBAL\Schema\Sequence $sequence
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* @return string
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*/
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public function getDropSequenceSql($sequence)
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{
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if ($sequence instanceof \Doctrine\DBAL\Schema\Sequence) {
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$sequence = $sequence->getName();
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}
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return 'DROP SEQUENCE ' . $sequence;
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}
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public function getDropDatabaseSql($database)
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{
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return 'DROP USER ' . $database . ' CASCADE';
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}
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|
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/**
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* Gets the sql statements for altering an existing table.
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*
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* The method returns an array of sql statements, since some platforms need several statements.
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*
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* @param string $diff->name name of the table that is intended to be changed.
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* @param array $changes associative array that contains the details of each type *
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* @param boolean $check indicates whether the function should just check if the DBMS driver
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* can perform the requested table alterations if the value is true or
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* actually perform them otherwise.
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* @return array
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*/
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public function getAlterTableSql(TableDiff $diff)
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{
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$sql = array();
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$fields = array();
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foreach ($diff->addedColumns AS $column) {
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$fields[] = $this->getColumnDeclarationSql($column->getName(), $column->toArray());
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}
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if (count($fields)) {
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$sql[] = 'ALTER TABLE ' . $diff->name . ' ADD (' . implode(', ', $fields) . ')';
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}
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|
|
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$fields = array();
|
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foreach ($diff->changedColumns AS $columnDiff) {
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$column = $columnDiff->column;
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$fields[] = $column->getName(). ' ' . $this->getColumnDeclarationSql('', $column->toArray());
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}
|
|
if (count($fields)) {
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$sql[] = 'ALTER TABLE ' . $diff->name . ' MODIFY (' . implode(', ', $fields) . ')';
|
|
}
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|
|
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foreach ($diff->renamedColumns AS $oldColumnName => $column) {
|
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$sql[] = 'ALTER TABLE ' . $diff->name . ' RENAME COLUMN ' . $oldColumnName .' TO ' . $column->getName();
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}
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|
|
|
$fields = array();
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foreach ($diff->removedColumns AS $column) {
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$fields[] = $column->getName();
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}
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if (count($fields)) {
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$sql[] = 'ALTER TABLE ' . $diff->name . ' DROP COLUMN ' . implode(', ', $fields);
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}
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if ($diff->newName !== false) {
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$sql[] = 'ALTER TABLE ' . $diff->name . ' RENAME TO ' . $diff->newName;
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}
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$sql = array_merge($sql, $this->_getAlterTableIndexForeignKeySql($diff));
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return $sql;
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}
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|
|
|
/**
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|
* Whether the platform prefers sequences for ID generation.
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|
*
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|
* @return boolean
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|
*/
|
|
public function prefersSequences()
|
|
{
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return true;
|
|
}
|
|
|
|
/**
|
|
* Get the platform name for this instance
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getName()
|
|
{
|
|
return 'oracle';
|
|
}
|
|
|
|
/**
|
|
* Adds an driver-specific LIMIT clause to the query
|
|
*
|
|
* @param string $query query to modify
|
|
* @param integer $limit limit the number of rows
|
|
* @param integer $offset start reading from given offset
|
|
* @return string the modified query
|
|
*/
|
|
public function modifyLimitQuery($query, $limit, $offset = null)
|
|
{
|
|
$limit = (int) $limit;
|
|
$offset = (int) $offset;
|
|
if (preg_match('/^\s*SELECT/i', $query)) {
|
|
if ( ! preg_match('/\sFROM\s/i', $query)) {
|
|
$query .= " FROM dual";
|
|
}
|
|
if ($limit > 0) {
|
|
$max = $offset + $limit;
|
|
$column = '*';
|
|
if ($offset > 0) {
|
|
$min = $offset + 1;
|
|
$query = 'SELECT b.'.$column.' FROM ('.
|
|
'SELECT a.*, ROWNUM AS doctrine_rownum FROM ('
|
|
. $query . ') a '.
|
|
') b '.
|
|
'WHERE doctrine_rownum BETWEEN ' . $min . ' AND ' . $max;
|
|
} else {
|
|
$query = 'SELECT a.'.$column.' FROM (' . $query .') a WHERE ROWNUM <= ' . $max;
|
|
}
|
|
}
|
|
}
|
|
return $query;
|
|
}
|
|
|
|
/**
|
|
* Gets the character casing of a column in an SQL result set of this platform.
|
|
*
|
|
* Oracle returns all column names in SQL result sets in uppercase.
|
|
*
|
|
* @param string $column The column name for which to get the correct character casing.
|
|
* @return string The column name in the character casing used in SQL result sets.
|
|
*/
|
|
public function getSqlResultCasing($column)
|
|
{
|
|
return strtoupper($column);
|
|
}
|
|
|
|
public function getCreateTemporaryTableSnippetSql()
|
|
{
|
|
return "CREATE GLOBAL TEMPORARY TABLE";
|
|
}
|
|
|
|
public function getDateTimeFormatString()
|
|
{
|
|
return 'Y-m-d H:i:sP';
|
|
}
|
|
|
|
public function fixSchemaElementName($schemaElementName)
|
|
{
|
|
if (strlen($schemaElementName) > 30) {
|
|
// Trim it
|
|
return substr($schemaElementName, 0, 30);
|
|
}
|
|
return $schemaElementName;
|
|
}
|
|
|
|
/**
|
|
* Maximum length of any given databse identifier, like tables or column names.
|
|
*
|
|
* @return int
|
|
*/
|
|
public function getMaxIdentifierLength()
|
|
{
|
|
return 30;
|
|
}
|
|
|
|
/**
|
|
* Whether the platform supports sequences.
|
|
*
|
|
* @return boolean
|
|
*/
|
|
public function supportsSequences()
|
|
{
|
|
return true;
|
|
}
|
|
|
|
public function supportsForeignKeyOnUpdate()
|
|
{
|
|
return false;
|
|
}
|
|
}
|