<?php
/*
* $Id$
*
* 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.com>.
*/
Doctrine::autoload('Doctrine_Export');
/**
* Doctrine_Export_Sqlite
*
* @package Doctrine
* @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
* @category Object Relational Mapping
* @link www.phpdoctrine.com
* @since 1.0
* @version $Revision$
*/
class Doctrine_Export_Sqlite extends Doctrine_Export
{
/**
* 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 $definition associative array that defines properties of the index to be created.
* Currently, only one property named FIELDS is supported. This property
* is also an associative with the names of the index fields as array
* indexes. Each entry of this array is set to another type of associative
* array that specifies properties of the index that are specific to
* each field.
*
* Currently, only the sorting property is supported. It should be used
* to define the sorting direction of the index. It may be set to either
* ascending or descending.
*
* Not all DBMS support index sorting direction configuration. The DBMS
* drivers of those that do not support it ignore this property. Use the
* function support() to determine whether the DBMS driver can manage indexes.
* Example
* array(
* 'fields' => array(
* 'user_name' => array(
* 'sorting' => 'ascending'
* ),
* 'last_login' => array()
* )
* )
* @throws PDOException
* @return void
*/
public function createIndexSql($table, $name, array $definition)
{
$table = $this->conn->quoteIdentifier($table, true);
$name = $this->conn->getIndexName($name);
$query = 'CREATE INDEX ' . $name . ' ON ' . $table;
$query .= ' (' . $this->getIndexFieldDeclarationList($definition['fields']) . ')';
return $query;
}
/**
* getIndexFieldDeclarationList
* Obtain DBMS specific SQL code portion needed to set an index
* declaration to be used in statements like CREATE TABLE.
*
* @return string
*/
public function getIndexFieldDeclarationList(array $fields)
{
$declFields = array();
foreach ($fields as $fieldName => $field) {
$fieldString = $fieldName;
if (is_array($field)) {
if (isset($field['sorting'])) {
$sort = strtoupper($field['sorting']);
switch ($sort) {
case 'ASC':
case 'DESC':
$fieldString .= ' ' . $sort;
break;
default:
throw new Doctrine_Export_Exception('Unknown index sorting option given.');
}
}
} else {
$fieldString = $field;
}
$declFields[] = $fieldString;
}
return implode(', ', $declFields);
}
/**
* create a new table
*
* @param string $name Name of the database that should be created
* @param array $fields Associative array that contains the definition of each field of the new table
* The indexes of the array entries are the names of the fields of the table an
* the array entry values are associative arrays like those that are meant to be
* passed with the field definitions to get[Type]Declaration() functions.
* array(
* 'id' => array(
* 'type' => 'integer',
* 'unsigned' => 1
* 'notnull' => 1
* 'default' => 0
* ),
* 'name' => array(
* 'type' => 'text',
* 'length' => 12
* ),
* 'password' => array(
* 'type' => 'text',
* 'length' => 12
* )
* );
* @param array $options An associative array of table options:
*
* @return void
*/
public function createTable($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);
$autoinc = false;
foreach($fields as $field) {
if(isset($field['autoincrement']) && $field['autoincrement']) {
$autoinc = true;
break;
}
}
if ( ! $autoinc && isset($options['primary']) && ! empty($options['primary'])) {
$queryFields.= ', PRIMARY KEY('.implode(', ', array_values($options['primary'])).')';
}
// sqlite doesn't support foreign key declaration but it parses those anyway
$fk = array();
if (isset($options['foreignKeys']) && ! empty($options['foreignKeys'])) {
foreach ($options['foreignKeys'] as $definition) {
//$queryFields .= ', ' . $this->getForeignKeyDeclaration($definition);
if (isset($definition['onDelete'])) {
$fk[] = $definition;
}
}
}
if (isset($options['indexes']) && ! empty($options['indexes'])) {
foreach ($options['indexes'] as $index => $definition) {
$queryFields .= ', ' . $this->getIndexDeclaration($index, $definition);
}
}
$name = $this->conn->quoteIdentifier($name, true);
$query = 'CREATE TABLE ' . $name . ' (' . $queryFields . ')';
try {
if ( ! empty($fk)) {
$this->conn->beginTransaction();
}
$ret = $this->conn->exec($query);
if ( ! empty($fk)) {
foreach ($fk as $definition) {
$query = 'CREATE TRIGGER doctrine_' . $name . '_cscd_delete '
. 'AFTER DELETE ON ' . $name . ' FOR EACH ROW '
. 'BEGIN '
. 'DELETE FROM ' . $definition['foreignTable'] . ' WHERE ';
$local = (array) $definition['local'];
foreach((array) $definition['foreign'] as $k => $field) {
$query .= $field . ' = old.' . $local[$k] . ';';
}
$query .= 'END;';
$this->conn->exec($query);
}
$this->conn->commit();
}
} catch(Doctrine_Exception $e) {
$this->conn->rollback();
throw $e;
}
}
/**
* create sequence
*
* @param string $seqName name of the sequence to be created
* @param string $start start value of the sequence; default is 1
* @return boolean
*/
public function createSequence($seqName, $start = 1)
{
$sequenceName = $this->conn->quoteIdentifier($this->conn->getSequenceName($seqName), true);
$seqcolName = $this->conn->quoteIdentifier($this->conn->getAttribute(Doctrine::ATTR_SEQCOL_NAME), true);
$query = 'CREATE TABLE ' . $sequenceName . ' (' . $seqcolName . ' INTEGER PRIMARY KEY DEFAULT 0 NOT NULL)';
$this->conn->exec($query);
if ($start == 1) {
return true;
}
try {
$this->conn->exec('INSERT INTO ' . $sequenceName . ' (' . $seqcolName . ') VALUES (' . ($start-1) . ')');
return true;
} catch(Doctrine_Connection_Exception $e) {
// Handle error
try {
$result = $db->exec('DROP TABLE ' . $sequenceName);
} catch(Doctrine_Connection_Exception $e) {
throw new Doctrine_Export_Exception('could not drop inconsistent sequence table');
}
}
throw new Doctrine_Export_Exception('could not create sequence table');
}
/**
* drop existing sequence
*
* @param string $seq_name name of the sequence to be dropped
* @return boolean
*/
public function dropSequence($seq_name)
{
$sequenceName = $this->conn->quoteIdentifier($this->conn->getSequenceName($seq_name), true);
return $this->conn->exec('DROP TABLE ' . $sequenceName);
}
}