451 lines
14 KiB
PHP
451 lines
14 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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/**
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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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*/
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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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* @param string $sequenceName
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* @param integer $start
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* @param integer $allocationSize
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* @return string The SQL.
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*/
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public function getCreateSequenceSql($sequenceName, $start = 1, $allocationSize = 1)
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{
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return 'CREATE SEQUENCE ' . $this->quoteIdentifier($sequenceName)
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. ' START WITH ' . $start . ' INCREMENT BY ' . $allocationSize;
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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 ' . $this->quoteIdentifier($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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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 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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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(' . $length . ')' : 'VARCHAR2(4000)');
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}
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public function getListDatabasesSql()
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{
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return 'SELECT username FROM sys.dba_users';
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}
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public function getListFunctionsSql()
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{
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return "SELECT name FROM sys.user_source WHERE line = 1 AND type = 'FUNCTION'";
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}
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public function getCreateTableSql($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 => $definition) {
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// create nonunique indexes, as they are a part od CREATE TABLE DDL
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if ( ! isset($definition['type']) ||
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(isset($definition['type']) && strtolower($definition['type']) != 'unique')) {
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$sql[] = $this->getCreateIndexSql($table, $indexName, $definition);
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}
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}
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}
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return $sql;
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}
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public function getListTableIndexesSql($table)
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{
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return "SELECT * FROM user_indexes"
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. " WHERE table_name = '" . strtoupper($table) . "'";
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}
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public function getListTablesSql()
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{
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return 'SELECT * FROM sys.user_tables';
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}
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public function getListUsersSql()
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{
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return 'SELECT * FROM sys.dba_users';
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}
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public function getListViewsSql()
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{
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return 'SELECT view_name FROM sys.user_views';
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}
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public function getCreateViewSql($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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'fields' => array($name => true),
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);
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$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($table, $indexName, $definition).'\';
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END IF;
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END;';
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$sequenceName = $table . '_SEQ';
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$sql[] = $this->getCreateSequenceSql($sequenceName, $start);
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$triggerName = $this->quoteIdentifier($table . '_AI_PK', true);
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$table = $this->quoteIdentifier($table, true);
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$name = $this->quoteIdentifier($name, true);
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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 ' . $this->quoteIdentifier($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 ' . $this->quoteIdentifier($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 ' . $this->quoteIdentifier($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[] = $this->getDropConstraintSql($table, $indexName);
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}
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return $sql;
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}
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public function getListTableConstraintsSql($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 = '" . $table . "' ORDER BY column_name";
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}
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public function getDropSequenceSql($sequenceName)
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{
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return 'DROP SEQUENCE ' . $this->quoteIdentifier($sequenceName);
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}
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public function getDropDatabaseSql($database)
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{
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return 'DROP USER ' . $database . ' CASCADE';
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}
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public function getAlterTableSql($name, array $changes, $check = false)
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{
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if ( ! $name) {
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throw DoctrineException::updateMe('no valid table name specified');
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}
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foreach ($changes as $changeName => $change) {
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switch ($changeName) {
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case 'add':
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case 'remove':
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case 'change':
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case 'name':
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case 'rename':
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break;
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default:
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throw \Doctrine\Common\DoctrineException::updateMe('change type "' . $changeName . '" not yet supported');
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}
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}
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if ($check) {
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return false;
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}
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$name = $this->quoteIdentifier($name);
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if ( ! empty($changes['add']) && is_array($changes['add'])) {
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$fields = array();
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foreach ($changes['add'] as $fieldName => $field) {
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$fields[] = $this->getColumnDeclarationSql($fieldName, $field);
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}
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$sql[] = 'ALTER TABLE ' . $name . ' ADD (' . implode(', ', $fields) . ')';
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}
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if ( ! empty($changes['change']) && is_array($changes['change'])) {
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$fields = array();
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foreach ($changes['change'] as $fieldName => $field) {
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$fields[] = $fieldName. ' ' . $this->getColumnDeclarationSql('', $field['definition']);
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}
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$sql[] = 'ALTER TABLE ' . $name . ' MODIFY (' . implode(', ', $fields) . ')';
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}
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if ( ! empty($changes['rename']) && is_array($changes['rename'])) {
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foreach ($changes['rename'] as $fieldName => $field) {
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$sql[] = 'ALTER TABLE ' . $name . ' RENAME COLUMN ' . $this->quoteIdentifier($fieldName)
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. ' TO ' . $this->quoteIdentifier($field['name']);
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}
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}
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if ( ! empty($changes['remove']) && is_array($changes['remove'])) {
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$fields = array();
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foreach ($changes['remove'] as $fieldName => $field) {
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$fields[] = $this->quoteIdentifier($fieldName);
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}
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$sql[] = 'ALTER TABLE ' . $name . ' DROP COLUMN ' . implode(', ', $fields);
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}
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if ( ! empty($changes['name'])) {
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$changeName = $this->quoteIdentifier($changes['name']);
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$sql[] = 'ALTER TABLE ' . $name . ' RENAME TO ' . $changeName;
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}
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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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*/
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public function prefersSequences()
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{
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return true;
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}
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/**
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* Get the platform name for this instance
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*
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* @return string
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*/
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public function getName()
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{
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return 'oracle';
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}
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} |