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<?php
/*
* $Id: Pgsql.php 6498 2009-10-13 04:56:16Z jwage $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.phpdoctrine.org>.
*/
/**
* Doctrine_Export_Pgsql
*
* @package Doctrine
* @subpackage Export
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
* @author Lukas Smith <smith@pooteeweet.org> (PEAR MDB2 library)
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.phpdoctrine.org
* @since 1.0
* @version $Revision: 6498 $
*/
class Doctrine_Export_Pgsql extends Doctrine_Export
{
public $tmpConnectionDatabase = 'postgres';
/**
* createDatabaseSql
*
* @param string $name
* @return void
*/
public function createDatabaseSql($name)
{
$query = 'CREATE DATABASE ' . $this->conn->quoteIdentifier($name);
return $query;
}
/**
* drop an existing database
*
* @param string $name name of the database that should be dropped
* @throws PDOException
* @access public
*/
public function dropDatabaseSql($name)
{
$query = 'DROP DATABASE ' . $this->conn->quoteIdentifier($name);
return $query;
}
/**
* getAdvancedForeignKeyOptions
* Return the FOREIGN KEY query section dealing with non-standard options
* as MATCH, INITIALLY DEFERRED, ON UPDATE, ...
*
* @param array $definition foreign key definition
* @return string
* @access protected
*/
public function getAdvancedForeignKeyOptions(array $definition)
{
$query = '';
if (isset($definition['match'])) {
$query .= ' MATCH ' . $definition['match'];
}
if (isset($definition['onUpdate'])) {
$query .= ' ON UPDATE ' . $definition['onUpdate'];
}
if (isset($definition['onDelete'])) {
$query .= ' ON DELETE ' . $definition['onDelete'];
}
if (isset($definition['deferrable'])) {
$query .= ' DEFERRABLE';
} else {
$query .= ' NOT DEFERRABLE';
}
if (isset($definition['deferred'])) {
$query .= ' INITIALLY DEFERRED';
} else {
$query .= ' INITIALLY IMMEDIATE';
}
return $query;
}
/**
* generates the sql for altering an existing table on postgresql
*
* @param string $name name of the table that is intended to be changed.
* @param array $changes associative array that contains the details of each type *
* @param boolean $check indicates whether the function should just check if the DBMS driver
* can perform the requested table alterations if the value is true or
* actually perform them otherwise.
* @see Doctrine_Export::alterTable()
* @return array
*/
public function alterTableSql($name, array $changes, $check = false)
{
foreach ($changes as $changeName => $change) {
switch ($changeName) {
case 'add':
case 'remove':
case 'change':
case 'name':
case 'rename':
break;
default:
throw new Doctrine_Export_Exception('change type "' . $changeName . '\" not yet supported');
}
}
if ($check) {
return true;
}
$sql = array();
if (isset($changes['add']) && is_array($changes['add'])) {
foreach ($changes['add'] as $fieldName => $field) {
$query = 'ADD ' . $this->getDeclaration($fieldName, $field);
$sql[] = 'ALTER TABLE ' . $name . ' ' . $query;
}
}
if (isset($changes['remove']) && is_array($changes['remove'])) {
foreach ($changes['remove'] as $fieldName => $field) {
$fieldName = $this->conn->quoteIdentifier($fieldName, true);
$query = 'DROP ' . $fieldName;
$sql[] = 'ALTER TABLE ' . $name . ' ' . $query;
}
}
if (isset($changes['change']) && is_array($changes['change'])) {
foreach ($changes['change'] as $fieldName => $field) {
$fieldName = $this->conn->quoteIdentifier($fieldName, true);
if (isset($field['type'])) {
$serverInfo = $this->conn->getServerVersion();
if (is_array($serverInfo) && $serverInfo['major'] < 8) {
throw new Doctrine_Export_Exception('changing column type for "'.$field['type'].'\" requires PostgreSQL 8.0 or above');
}
$query = 'ALTER ' . $fieldName . ' TYPE ' . $this->conn->datatype->getTypeDeclaration($field['definition']);
$sql[] = 'ALTER TABLE ' . $name . ' ' . $query;
}
if (array_key_exists('default', $field)) {
$query = 'ALTER ' . $fieldName . ' SET DEFAULT ' . $this->conn->quote($field['definition']['default'], $field['definition']['type']);
$sql[] = 'ALTER TABLE ' . $name . ' ' . $query;
}
if ( ! empty($field['notnull'])) {
$query = 'ALTER ' . $fieldName . ' ' . ($field['definition']['notnull'] ? 'SET' : 'DROP') . ' NOT NULL';
$sql[] = 'ALTER TABLE ' . $name . ' ' . $query;
}
}
}
if (isset($changes['rename']) && is_array($changes['rename'])) {
foreach ($changes['rename'] as $fieldName => $field) {
$fieldName = $this->conn->quoteIdentifier($fieldName, true);
$sql[] = 'ALTER TABLE ' . $name . ' RENAME COLUMN ' . $fieldName . ' TO ' . $this->conn->quoteIdentifier($field['name'], true);
}
}
$name = $this->conn->quoteIdentifier($name, true);
if (isset($changes['name'])) {
$changeName = $this->conn->quoteIdentifier($changes['name'], true);
$sql[] = 'ALTER TABLE ' . $name . ' RENAME TO ' . $changeName;
}
return $sql;
}
/**
* alter an existing table
*
* @param string $name name of the table that is intended to be changed.
* @param array $changes associative array that contains the details of each type
* of change that is intended to be performed. The types of
* changes that are currently supported are defined as follows:
*
* name
*
* New name for the table.
*
* add
*
* Associative array with the names of fields to be added as
* indexes of the array. The value of each entry of the array
* should be set to another associative array with the properties
* of the fields to be added. The properties of the fields should
* be the same as defined by the Metabase parser.
*
*
* remove
*
* Associative array with the names of fields to be removed as indexes
* of the array. Currently the values assigned to each entry are ignored.
* An empty array should be used for future compatibility.
*
* rename
*
* Associative array with the names of fields to be renamed as indexes
* of the array. The value of each entry of the array should be set to
* another associative array with the entry named name with the new
* field name and the entry named Declaration that is expected to contain
* the portion of the field declaration already in DBMS specific SQL code
* as it is used in the CREATE TABLE statement.
*
* change
*
* Associative array with the names of the fields to be changed as indexes
* of the array. Keep in mind that if it is intended to change either the
* name of a field and any other properties, the change array entries
* should have the new names of the fields as array indexes.
*
* The value of each entry of the array should be set to another associative
* array with the properties of the fields to that are meant to be changed as
* array entries. These entries should be assigned to the new values of the
* respective properties. The properties of the fields should be the same
* as defined by the Metabase parser.
*
* Example
* array(
* 'name' => 'userlist',
* 'add' => array(
* 'quota' => array(
* 'type' => 'integer',
* 'unsigned' => 1
* )
* ),
* 'remove' => array(
* 'file_limit' => array(),
* 'time_limit' => array()
* ),
* 'change' => array(
* 'name' => array(
* 'length' => '20',
* 'definition' => array(
* 'type' => 'text',
* 'length' => 20,
* ),
* )
* ),
* 'rename' => array(
* 'sex' => array(
* 'name' => 'gender',
* 'definition' => array(
* 'type' => 'text',
* 'length' => 1,
* 'default' => 'M',
* ),
* )
* )
* )
*
* @param boolean $check indicates whether the function should just check if the DBMS driver
* can perform the requested table alterations if the value is true or
* actually perform them otherwise.
* @throws Doctrine_Connection_Exception
* @return boolean
*/
public function alterTable($name, array $changes, $check = false)
{
$sql = $this->alterTableSql($name, $changes, $check);
foreach ($sql as $query) {
$this->conn->exec($query);
}
return true;
}
/**
* return RDBMS specific create sequence statement
*
* @throws Doctrine_Connection_Exception if something fails at database level
* @param string $seqName name of the sequence to be created
* @param string $start start value of the sequence; default is 1
* @param array $options An associative array of table options:
* array(
* 'comment' => 'Foo',
* 'charset' => 'utf8',
* 'collate' => 'utf8_unicode_ci',
* );
* @return string
*/
public function createSequenceSql($sequenceName, $start = 1, array $options = array())
{
$sequenceName = $this->conn->quoteIdentifier($this->conn->formatter->getSequenceName($sequenceName), true);
return 'CREATE SEQUENCE ' . $sequenceName . ' INCREMENT 1' .
($start < 1 ? ' MINVALUE ' . $start : '') . ' START ' . $start;
}
/**
* drop existing sequence
*
* @param string $sequenceName name of the sequence to be dropped
*/
public function dropSequenceSql($sequenceName)
{
$sequenceName = $this->conn->quoteIdentifier($this->conn->formatter->getSequenceName($sequenceName), true);
return 'DROP SEQUENCE ' . $sequenceName;
}
/**
* Creates a table.
*
* @param unknown_type $name
* @param array $fields
* @param array $options
* @return unknown
*/
public function createTableSql($name, array $fields, array $options = array())
{
if ( ! $name) {
throw new Doctrine_Export_Exception('no valid table name specified');
}
if (empty($fields)) {
throw new Doctrine_Export_Exception('no fields specified for table ' . $name);
}
$queryFields = $this->getFieldDeclarationList($fields);
if (isset($options['primary']) && ! empty($options['primary'])) {
$keyColumns = array_values($options['primary']);
$keyColumns = array_map(array($this->conn, 'quoteIdentifier'), $keyColumns);
$queryFields .= ', PRIMARY KEY(' . implode(', ', $keyColumns) . ')';
}
$query = 'CREATE TABLE ' . $this->conn->quoteIdentifier($name, true) . ' (' . $queryFields;
if ($check = $this->getCheckDeclaration($fields)) {
$query .= ', ' . $check;
}
if (isset($options['checks']) && $check = $this->getCheckDeclaration($options['checks'])) {
$query .= ', ' . $check;
}
$query .= ')';
$sql[] = $query;
if (isset($options['indexes']) && ! empty($options['indexes'])) {
foreach($options['indexes'] as $index => $definition) {
$sql[] = $this->createIndexSql($name, $index, $definition);
}
}
if (isset($options['foreignKeys'])) {
foreach ((array) $options['foreignKeys'] as $k => $definition) {
if (is_array($definition)) {
$sql[] = $this->createForeignKeySql($name, $definition);
}
}
}
return $sql;
}
/**
* Get the stucture of a field into an array.
*
* @param string $table name of the table on which the index is to be created
* @param string $name name of the index to be created
* @param array $definition associative array that defines properties of the index to be created.
* @see Doctrine_Export::createIndex()
* @return string
*/
public function createIndexSql($table, $name, array $definition)
{
$query = parent::createIndexSql($table, $name, $definition);
if (isset($definition['where'])) {
return $query . ' WHERE ' . $definition['where'];
}
return $query;
}
}
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