788 lines
24 KiB
PHP
788 lines
24 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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* PostgreSqlPlatform.
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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 PostgreSqlPlatform extends AbstractPlatform
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{
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/**
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* Constructor.
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* Creates a new PostgreSqlPlatform.
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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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* Returns the md5 sum of a field.
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*
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* Note: Not SQL92, but common functionality
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*
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* md5() works with the default PostgreSQL 8 versions.
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*
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* If you are using PostgreSQL 7.x or older you need
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* to make sure that the digest procedure is installed.
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* If you use RPMS (Redhat and Mandrake) install the postgresql-contrib
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* package. You must then install the procedure by running this shell command:
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* <code>
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* psql [dbname] < /usr/share/pgsql/contrib/pgcrypto.sql
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* </code>
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* You should make sure you run this as the postgres user.
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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 getMd5Expression($column)
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{
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if ($this->_version > 7) {
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return 'MD5(' . $column . ')';
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} else {
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return 'encode(digest(' . $column .', md5), hex)';
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}
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}
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/**
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* Returns part of a string.
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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 the target $value the string or the string column.
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* @param int $from extract from this characeter.
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* @param int $len extract this amount of characters.
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* @return string sql that extracts part of a string.
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* @override
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*/
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public function getSubstringExpression($value, $from, $len = null)
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{
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if ($len === null) {
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return 'SUBSTR(' . $value . ', ' . $from . ')';
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} else {
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return 'SUBSTR(' . $value . ', ' . $from . ', ' . $len . ')';
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}
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}
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/**
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* PostgreSQLs AGE(<timestamp1> [, <timestamp2>]) function.
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*
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* @param string $timestamp1 timestamp to subtract from NOW()
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* @param string $timestamp2 optional; if given: subtract arguments
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* @return string
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*/
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public function getAgeExpression($timestamp1, $timestamp2 = null)
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{
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if ( $timestamp2 == null ) {
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return 'AGE(' . $timestamp1 . ')';
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}
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return 'AGE(' . $timestamp1 . ', ' . $timestamp2 . ')';
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}
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/**
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* PostgreSQLs DATE_PART( <text>, <time> ) function.
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*
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* @param string $text what to extract
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* @param string $time timestamp or interval to extract from
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* @return string
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*/
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public function getDatePartExpression($text, $time)
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{
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return 'DATE_PART(' . $text . ', ' . $time . ')';
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}
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/**
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* PostgreSQLs TO_CHAR( <time>, <text> ) function.
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*
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* @param string $time timestamp or interval
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* @param string $text how to the format the output
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* @return string
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*/
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public function getToCharExpression($time, $text)
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{
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return 'TO_CHAR(' . $time . ', ' . $text . ')';
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}
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/**
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* Returns the SQL string to return the current system date and time.
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*
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* @return string
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*/
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public function getNowExpression()
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{
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return 'LOCALTIMESTAMP(0)';
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}
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/**
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* regexp
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*
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* @return string the regular expression operator
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* @override
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*/
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public function getRegexpExpression()
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{
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return 'SIMILAR TO';
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}
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/**
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* return string to call a function to get random value inside an SQL statement
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*
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* @return return string to generate float between 0 and 1
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* @access public
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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 'RANDOM()';
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}
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/**
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* build a pattern matching string
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*
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* EXPERIMENTAL
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*
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* WARNING: this function is experimental and may change signature at
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* any time until labelled as non-experimental
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*
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* @access public
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*
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* @param array $pattern even keys are strings, odd are patterns (% and _)
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* @param string $operator optional pattern operator (LIKE, ILIKE and maybe others in the future)
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* @param string $field optional field name that is being matched against
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* (might be required when emulating ILIKE)
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*
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* @return string SQL pattern
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* @override
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*/
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public function getMatchPatternExpression($pattern, $operator = null, $field = null)
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{
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$match = '';
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if ( ! is_null($operator)) {
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$field = is_null($field) ? '' : $field.' ';
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$operator = strtoupper($operator);
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switch ($operator) {
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// case insensitive
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case 'ILIKE':
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$match = $field.'ILIKE ';
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break;
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// case sensitive
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case 'LIKE':
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$match = $field.'LIKE ';
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break;
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default:
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throw DoctrineException::operatorNotSupported($operator);
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}
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}
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$match.= "'";
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foreach ($pattern as $key => $value) {
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if ($key % 2) {
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$match.= $value;
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} else {
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$match.= $this->conn->escapePattern($this->conn->escape($value));
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}
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}
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$match.= "'";
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$match.= $this->patternEscapeString();
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return $match;
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}
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/**
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* parses a literal boolean value and returns
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* proper sql equivalent
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*
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* @param string $value boolean value to be parsed
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* @return string parsed boolean value
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*/
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/*public function parseBoolean($value)
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{
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return $value;
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}*/
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/**
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* Whether the platform supports sequences.
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* Postgres has native support for sequences.
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*
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* @return boolean
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*/
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public function supportsSequences()
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{
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return true;
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}
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/**
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* Whether the platform supports database schemas.
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*
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* @return boolean
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*/
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public function supportsSchemas()
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{
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return true;
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}
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/**
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* Whether the platform supports identity columns.
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* Postgres supports these through the SERIAL keyword.
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*
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* @return boolean
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*/
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public function supportsIdentityColumns()
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{
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return true;
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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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public function getListDatabasesSql()
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{
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return 'SELECT datname FROM pg_database';
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}
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public function getListFunctionsSql()
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{
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return "SELECT
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proname
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FROM
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pg_proc pr, pg_type tp
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WHERE
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tp.oid = pr.prorettype
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AND pr.proisagg = FALSE
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AND tp.typname <> 'trigger'
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AND pr.pronamespace IN
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(SELECT oid FROM pg_namespace
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WHERE nspname NOT LIKE 'pg_%' AND nspname != 'information_schema')";
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}
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public function getListSequencesSql($database)
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{
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return "SELECT
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relname
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FROM
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pg_class
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WHERE relkind = 'S' AND relnamespace IN
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(SELECT oid FROM pg_namespace
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WHERE nspname NOT LIKE 'pg_%' AND nspname != 'information_schema')";
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}
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public function getListTablesSql()
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{
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return "SELECT
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c.relname AS table_name
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FROM pg_class c, pg_user u
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WHERE c.relowner = u.usesysid
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AND c.relkind = 'r'
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AND NOT EXISTS (SELECT 1 FROM pg_views WHERE viewname = c.relname)
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AND c.relname !~ '^(pg_|sql_)'
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UNION
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SELECT c.relname AS table_name
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FROM pg_class c
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WHERE c.relkind = 'r'
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AND NOT EXISTS (SELECT 1 FROM pg_views WHERE viewname = c.relname)
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AND NOT EXISTS (SELECT 1 FROM pg_user WHERE usesysid = c.relowner)
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AND c.relname !~ '^pg_'";
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}
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public function getListViewsSql()
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{
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return 'SELECT viewname, definition FROM pg_views';
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}
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public function getListTriggersSql($table = null)
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{
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$sql = 'SELECT trg.tgname AS trigger_name
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FROM pg_trigger trg,
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pg_class tbl
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WHERE trg.tgrelid = tbl.oid';
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if ( ! is_null($table)) {
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$sql .= " AND tbl.relname = " . $table;
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}
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return $sql;
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}
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public function getListUsersSql()
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{
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return 'SELECT usename, passwd FROM pg_user';
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}
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public function getListTableForeignKeysSql($table, $database = null)
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{
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return "SELECT r.conname, pg_catalog.pg_get_constraintdef(r.oid, true) as condef
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FROM pg_catalog.pg_constraint r
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WHERE r.conrelid =
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(
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SELECT c.oid
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FROM pg_catalog.pg_class c
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LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
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WHERE c.relname = '" . $table . "' AND pg_catalog.pg_table_is_visible(c.oid)
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)
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AND r.contype = 'f'";
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}
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public function getCreateViewSql($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 '. $name;
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}
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public function getListTableConstraintsSql($table)
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{
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return "SELECT
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relname
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FROM
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pg_class
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WHERE oid IN (
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SELECT indexrelid
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FROM pg_index, pg_class
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WHERE pg_class.relname = '$table'
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AND pg_class.oid = pg_index.indrelid
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AND (indisunique = 't' OR indisprimary = 't')
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)";
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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/ezcDbSchemaPgsqlReader.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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return "SELECT relname, pg_index.indisunique, pg_index.indisprimary,
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pg_index.indkey, pg_index.indrelid
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FROM pg_class, pg_index
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WHERE oid IN (
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SELECT indexrelid
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FROM pg_index, pg_class
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WHERE pg_class.relname='$table' AND pg_class.oid=pg_index.indrelid
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) AND pg_index.indexrelid = oid";
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}
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public function getListTableColumnsSql($table)
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{
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return "SELECT
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a.attnum,
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a.attname AS field,
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t.typname AS type,
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format_type(a.atttypid, a.atttypmod) AS complete_type,
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a.attnotnull AS isnotnull,
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(SELECT 't'
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FROM pg_index
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WHERE c.oid = pg_index.indrelid
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AND pg_index.indkey[0] = a.attnum
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AND pg_index.indisprimary = 't'
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) AS pri,
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(SELECT pg_attrdef.adsrc
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FROM pg_attrdef
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WHERE c.oid = pg_attrdef.adrelid
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AND pg_attrdef.adnum=a.attnum
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) AS default
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FROM pg_attribute a, pg_class c, pg_type t
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WHERE c.relname = '$table'
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AND a.attnum > 0
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AND a.attrelid = c.oid
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AND a.atttypid = t.oid
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ORDER BY a.attnum";
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}
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/**
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* create a new database
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*
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* @param string $name name of the database that should be created
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* @throws PDOException
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* @return void
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* @override
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*/
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public function getCreateDatabaseSql($name)
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{
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return 'CREATE DATABASE ' . $name;
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}
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/**
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* drop an existing database
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*
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* @param string $name name of the database that should be dropped
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* @throws PDOException
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* @access public
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*/
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public function getDropDatabaseSql($name)
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{
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return 'DROP DATABASE ' . $name;
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}
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|
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/**
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* getAdvancedForeignKeyOptions
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* Return the FOREIGN KEY query section dealing with non-standard options
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* as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
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*
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* @param \Doctrine\DBAL\Schema\ForeignKeyConstraint $foreignKey foreign key definition
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* @return string
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* @override
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*/
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public function getAdvancedForeignKeyOptionsSql(\Doctrine\DBAL\Schema\ForeignKeyConstraint $foreignKey)
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{
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$query = '';
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if ($foreignKey->hasOption('match')) {
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$query .= ' MATCH ' . $foreignKey->getOption('match');
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}
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$query .= parent::getAdvancedForeignKeyOptionsSql($foreignKey);
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if ($foreignKey->hasOption('deferrable') && $foreignKey->getOption('deferrable') !== false) {
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$query .= ' DEFERRABLE';
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} else {
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$query .= ' NOT DEFERRABLE';
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}
|
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if ($foreignKey->hasOption('feferred') && $foreignKey->getOption('feferred') !== false) {
|
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$query .= ' INITIALLY DEFERRED';
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} else {
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$query .= ' INITIALLY IMMEDIATE';
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}
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return $query;
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}
|
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|
|
/**
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|
* generates the sql for altering an existing table on postgresql
|
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*
|
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* @param string $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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|
* @see Doctrine_Export::alterTable()
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|
* @return array
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|
* @override
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|
*/
|
|
public function getAlterTableSql(TableDiff $diff)
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|
{
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$sql = array();
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|
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foreach ($diff->addedColumns as $column) {
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$query = 'ADD ' . $this->getColumnDeclarationSql($column->getName(), $column->toArray());
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$sql[] = 'ALTER TABLE ' . $diff->name . ' ' . $query;
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}
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|
|
|
foreach ($diff->removedColumns as $column) {
|
|
$query = 'DROP ' . $column->getName();
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|
$sql[] = 'ALTER TABLE ' . $diff->name . ' ' . $query;
|
|
}
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|
|
|
foreach ($diff->changedColumns AS $columnDiff) {
|
|
$oldColumnName = $columnDiff->oldColumnName;
|
|
$column = $columnDiff->column;
|
|
|
|
if ($columnDiff->hasChanged('type')) {
|
|
$type = $column->getType();
|
|
|
|
// here was a server version check before, but DBAL API does not support this anymore.
|
|
$query = 'ALTER ' . $oldColumnName . ' TYPE ' . $type->getSqlDeclaration($column->toArray(), $this);
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$sql[] = 'ALTER TABLE ' . $diff->name . ' ' . $query;
|
|
}
|
|
if ($columnDiff->hasChanged('default')) {
|
|
$query = 'ALTER ' . $oldColumnName . ' SET ' . $this->getDefaultValueDeclarationSql($column->toArray());
|
|
$sql[] = 'ALTER TABLE ' . $diff->name . ' ' . $query;
|
|
}
|
|
if ($columnDiff->hasChanged('notnull')) {
|
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$query = 'ALTER ' . $oldColumnName . ' ' . ($column->getNotNull() ? 'SET' : 'DROP') . ' NOT NULL';
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$sql[] = 'ALTER TABLE ' . $diff->name . ' ' . $query;
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}
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|
}
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|
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|
foreach ($diff->renamedColumns as $oldColumnName => $column) {
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|
$sql[] = 'ALTER TABLE ' . $diff->name . ' RENAME COLUMN ' . $oldColumnName . ' TO ' . $column->getName();
|
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}
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|
|
|
if ($diff->newName !== false) {
|
|
$sql[] = 'ALTER TABLE ' . $diff->name . ' RENAME TO ' . $diff->newName;
|
|
}
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|
|
|
$sql = array_merge($sql, $this->_getAlterTableIndexForeignKeySql($diff));
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|
|
|
return $sql;
|
|
}
|
|
|
|
/**
|
|
* Gets the SQL to create a sequence on this platform.
|
|
*
|
|
* @param \Doctrine\DBAL\Schema\Sequence $sequence
|
|
* @throws DoctrineException
|
|
*/
|
|
public function getCreateSequenceSql(\Doctrine\DBAL\Schema\Sequence $sequence)
|
|
{
|
|
return 'CREATE SEQUENCE ' . $sequence->getName() .
|
|
' INCREMENT BY ' . $sequence->getAllocationSize() .
|
|
' MINVALUE ' . $sequence->getInitialValue() .
|
|
' START ' . $sequence->getInitialValue();
|
|
}
|
|
|
|
/**
|
|
* Drop existing sequence
|
|
* @param \Doctrine\DBAL\Schema\Sequence $sequence
|
|
* @return string
|
|
*/
|
|
public function getDropSequenceSql($sequence)
|
|
{
|
|
if ($sequence instanceof \Doctrine\DBAL\Schema\Sequence) {
|
|
$sequence = $sequence->getName();
|
|
}
|
|
return 'DROP SEQUENCE ' . $sequence;
|
|
}
|
|
|
|
/**
|
|
* @param ForeignKeyConstraint|string $foreignKey
|
|
* @param Table|string $table
|
|
* @return string
|
|
*/
|
|
public function getDropForeignKeySql($foreignKey, $table)
|
|
{
|
|
return $this->getDropConstraintSql($foreignKey, $table);
|
|
}
|
|
|
|
/**
|
|
* Gets the SQL used to create a table.
|
|
*
|
|
* @param unknown_type $tableName
|
|
* @param array $columns
|
|
* @param array $options
|
|
* @return unknown
|
|
*/
|
|
protected function _getCreateTableSql($tableName, array $columns, array $options = array())
|
|
{
|
|
$queryFields = $this->getColumnDeclarationListSql($columns);
|
|
|
|
if (isset($options['primary']) && ! empty($options['primary'])) {
|
|
$keyColumns = array_unique(array_values($options['primary']));
|
|
$queryFields .= ', PRIMARY KEY(' . implode(', ', $keyColumns) . ')';
|
|
}
|
|
|
|
$query = 'CREATE TABLE ' . $tableName . ' (' . $queryFields . ')';
|
|
|
|
$sql[] = $query;
|
|
|
|
if (isset($options['indexes']) && ! empty($options['indexes'])) {
|
|
foreach ($options['indexes'] AS $index) {
|
|
$sql[] = $this->getCreateIndexSql($index, $tableName);
|
|
}
|
|
}
|
|
|
|
if (isset($options['foreignKeys'])) {
|
|
foreach ((array) $options['foreignKeys'] as $definition) {
|
|
$sql[] = $this->getCreateForeignKeySql($definition, $tableName);
|
|
}
|
|
}
|
|
|
|
return $sql;
|
|
}
|
|
|
|
/**
|
|
* Postgres wants boolean values converted to the strings 'true'/'false'.
|
|
*
|
|
* @param array $item
|
|
* @override
|
|
*/
|
|
public function convertBooleans($item)
|
|
{
|
|
if (is_array($item)) {
|
|
foreach ($item as $key => $value) {
|
|
if (is_bool($value) || is_numeric($item)) {
|
|
$item[$key] = ($value) ? 'true' : 'false';
|
|
}
|
|
}
|
|
} else {
|
|
if (is_bool($item) || is_numeric($item)) {
|
|
$item = ($item) ? 'true' : 'false';
|
|
}
|
|
}
|
|
return $item;
|
|
}
|
|
|
|
public function getSequenceNextValSql($sequenceName)
|
|
{
|
|
return "SELECT NEXTVAL('" . $sequenceName . "')";
|
|
}
|
|
|
|
public function getSetTransactionIsolationSql($level)
|
|
{
|
|
return 'SET SESSION CHARACTERISTICS AS TRANSACTION ISOLATION LEVEL '
|
|
. $this->_getTransactionIsolationLevelSql($level);
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getBooleanTypeDeclarationSql(array $field)
|
|
{
|
|
return 'BOOLEAN';
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getIntegerTypeDeclarationSql(array $field)
|
|
{
|
|
if ( ! empty($field['autoincrement'])) {
|
|
return 'SERIAL';
|
|
}
|
|
|
|
return 'INT';
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getBigIntTypeDeclarationSql(array $field)
|
|
{
|
|
if ( ! empty($field['autoincrement'])) {
|
|
return 'BIGSERIAL';
|
|
}
|
|
return 'BIGINT';
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getSmallIntTypeDeclarationSql(array $field)
|
|
{
|
|
return 'SMALLINT';
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getDateTimeTypeDeclarationSql(array $fieldDeclaration)
|
|
{
|
|
return 'TIMESTAMP(0) WITH TIME ZONE';
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getDateTypeDeclarationSql(array $fieldDeclaration)
|
|
{
|
|
return 'DATE';
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
public function getTimeTypeDeclarationSql(array $fieldDeclaration)
|
|
{
|
|
return 'TIME';
|
|
}
|
|
|
|
/**
|
|
* @override
|
|
*/
|
|
protected function _getCommonIntegerTypeDeclarationSql(array $columnDef)
|
|
{
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* Gets the SQL snippet used to declare a VARCHAR column on the MySql platform.
|
|
*
|
|
* @params array $field
|
|
* @override
|
|
*/
|
|
public function getVarcharTypeDeclarationSql(array $field)
|
|
{
|
|
if ( ! isset($field['length'])) {
|
|
if (array_key_exists('default', $field)) {
|
|
$field['length'] = $this->getVarcharMaxLength();
|
|
} else {
|
|
$field['length'] = false;
|
|
}
|
|
}
|
|
|
|
$length = ($field['length'] <= $this->getVarcharMaxLength()) ? $field['length'] : false;
|
|
$fixed = (isset($field['fixed'])) ? $field['fixed'] : false;
|
|
|
|
return $fixed ? ($length ? 'CHAR(' . $length . ')' : 'CHAR(255)')
|
|
: ($length ? 'VARCHAR(' . $length . ')' : 'TEXT');
|
|
}
|
|
|
|
/** @override */
|
|
public function getClobTypeDeclarationSql(array $field)
|
|
{
|
|
return 'TEXT';
|
|
}
|
|
|
|
/**
|
|
* Get the platform name for this instance
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getName()
|
|
{
|
|
return 'postgresql';
|
|
}
|
|
|
|
/**
|
|
* Gets the character casing of a column in an SQL result set.
|
|
*
|
|
* PostgreSQL returns all column names in SQL result sets in lowercase.
|
|
*
|
|
* @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 strtolower($column);
|
|
}
|
|
|
|
public function getDateTimeFormatString()
|
|
{
|
|
return 'Y-m-d H:i:sO';
|
|
}
|
|
|
|
/**
|
|
* Get the insert sql for an empty insert statement
|
|
*
|
|
* @param string $tableName
|
|
* @param string $identifierColumnName
|
|
* @return string $sql
|
|
*/
|
|
public function getEmptyIdentityInsertSql($quotedTableName, $quotedIdentifierColumnName)
|
|
{
|
|
return 'INSERT INTO ' . $quotedTableName . ' (' . $quotedIdentifierColumnName . ') VALUES (DEFAULT)';
|
|
}
|
|
}
|