364 lines
12 KiB
PHP
364 lines
12 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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* @todo Doc
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*/
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/*private function _createLimitSubquery($query, $limit, $offset, $column = null)
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{
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$limit = (int) $limit;
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$offset = (int) $offset;
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if (preg_match('/^\s*SELECT/i', $query)) {
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if ( ! preg_match('/\sFROM\s/i', $query)) {
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$query .= " FROM dual";
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}
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if ($limit > 0) {
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$max = $offset + $limit;
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$column = $column === null ? '*' : $column;
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if ($offset > 0) {
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$min = $offset + 1;
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$query = 'SELECT b.'.$column.' FROM ('.
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'SELECT a.*, ROWNUM AS doctrine_rownum FROM ('
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. $query . ') a '.
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') b '.
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'WHERE doctrine_rownum BETWEEN ' . $min . ' AND ' . $max;
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} else {
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$query = 'SELECT a.'.$column.' FROM (' . $query .') a WHERE ROWNUM <= ' . $max;
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}
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}
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}
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return $query;
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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, $length)";
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return "SUBSTR($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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* Obtain DBMS specific SQL code portion needed to declare an text type
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* field to be used in statements like CREATE TABLE.
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*
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* @param array $field associative array with the name of the properties
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* of the field being declared as array indexes. Currently, the types
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* of supported field properties are as follows:
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*
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* length
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* Integer value that determines the maximum length of the text
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* field. If this argument is missing the field should be
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* declared to have the longest length allowed by the DBMS.
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*
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* default
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* Text value to be used as default for this field.
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*
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* notnull
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* Boolean flag that indicates whether this field is constrained
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* to not be set to null.
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* @return string DBMS specific SQL code portion that should be used to
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* declare the specified field.
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* @override
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*/
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/*public function getNativeDeclaration(array $field)
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{
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if ( ! isset($field['type'])) {
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throw \Doctrine\Common\DoctrineException::updateMe('Missing column type.');
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}
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switch ($field['type']) {
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case 'string':
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case 'array':
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case 'object':
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case 'gzip':
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case 'char':
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case 'varchar':
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$length = !empty($field['length'])
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? $field['length'] : 16777215; // TODO: $this->conn->options['default_text_field_length'];
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$fixed = ((isset($field['fixed']) && $field['fixed']) || $field['type'] == 'char') ? true : false;
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return $fixed ? 'CHAR('.$length.')' : 'VARCHAR2('.$length.')';
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case 'clob':
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return 'CLOB';
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case 'blob':
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return 'BLOB';
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case 'integer':
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case 'enum':
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case 'int':
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if ( ! empty($field['length'])) {
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return 'NUMBER('.$field['length'].')';
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}
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return 'INT';
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case 'boolean':
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return 'NUMBER(1)';
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case 'date':
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case 'time':
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case 'timestamp':
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return 'DATE';
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case 'float':
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case 'double':
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return 'NUMBER';
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case 'decimal':
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$scale = !empty($field['scale']) ? $field['scale'] : $this->conn->getAttribute(Doctrine::ATTR_DECIMAL_PLACES);
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return 'NUMBER(*,'.$scale.')';
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default:
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}
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throw \Doctrine\Common\DoctrineException::updateMe('Unknown field type \'' . $field['type'] . '\'.');
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}*/
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/**
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* Maps a native array description of a field to a doctrine datatype and length
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*
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* @param array $field native field description
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* @return array containing the various possible types, length, sign, fixed
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* @throws Doctrine_DataDict_Oracle_Exception
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* @override
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*/
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/*public function getPortableDeclaration(array $field)
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{
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if ( ! isset($field['data_type'])) {
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throw \Doctrine\Common\DoctrineException::updateMe('Native oracle definition must have a data_type key specified');
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}
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$dbType = strtolower($field['data_type']);
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$type = array();
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$length = $unsigned = $fixed = null;
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if ( ! empty($field['data_length'])) {
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$length = $field['data_length'];
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}
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if ( ! isset($field['column_name'])) {
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$field['column_name'] = '';
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}
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switch ($dbType) {
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case 'integer':
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case 'pls_integer':
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case 'binary_integer':
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$type[] = 'integer';
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if ($length == '1') {
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$type[] = 'boolean';
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if (preg_match('/^(is|has)/', $field['column_name'])) {
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$type = array_reverse($type);
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}
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}
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break;
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case 'varchar':
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case 'varchar2':
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case 'nvarchar2':
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$fixed = false;
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case 'char':
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case 'nchar':
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$type[] = 'string';
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if ($length == '1') {
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$type[] = 'boolean';
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if (preg_match('/^(is|has)/', $field['column_name'])) {
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$type = array_reverse($type);
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}
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}
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if ($fixed !== false) {
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$fixed = true;
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}
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break;
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case 'date':
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case 'timestamp':
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$type[] = 'timestamp';
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$length = null;
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break;
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case 'float':
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$type[] = 'float';
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break;
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case 'number':
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if ( ! empty($field['data_scale'])) {
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$type[] = 'decimal';
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} else {
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$type[] = 'integer';
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if ($length == '1') {
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$type[] = 'boolean';
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if (preg_match('/^(is|has)/', $field['column_name'])) {
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$type = array_reverse($type);
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}
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}
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}
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break;
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case 'long':
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$type[] = 'string';
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case 'clob':
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case 'nclob':
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$type[] = 'clob';
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break;
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case 'blob':
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case 'raw':
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case 'long raw':
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case 'bfile':
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$type[] = 'blob';
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$length = null;
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break;
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case 'rowid':
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case 'urowid':
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default:
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throw \Doctrine\Common\DoctrineException::updateMe('unknown database attribute type: ' . $dbType);
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}
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return array('type' => $type,
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'length' => $length,
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'unsigned' => $unsigned,
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'fixed' => $fixed);
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}*/
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/**
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* {@inheritdoc}
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*
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* @return string
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* @override
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*/
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public function getCreateSequenceSql($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 'ALTER SESSION ISOLATION LEVEL ' . $this->_getTransactionIsolationLevelSql($level);
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}
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/**
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* Enter description here...
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*
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* @param integer $level
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* @override
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*/
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protected function _getTransactionIsolationLevelSql($level)
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{
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switch ($level) {
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case Doctrine_DBAL_Connection::TRANSACTION_READ_UNCOMMITTED:
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return 'READ COMMITTED';
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case Doctrine_DBAL_Connection::TRANSACTION_READ_COMMITTED:
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case Doctrine_DBAL_Connection::TRANSACTION_REPEATABLE_READ:
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case Doctrine_DBAL_Connection::TRANSACTION_SERIALIZABLE:
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return 'SERIALIZABLE';
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default:
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return parent::_getTransactionIsolationLevelSql($level);
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}
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}
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/**
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* 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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} |