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<?php
/*
* $Id: Sqlite.php 6484 2009-10-12 17:40:41Z 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_Sqlite
*
* @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: 6484 $
*/
class Doctrine_Export_Sqlite extends Doctrine_Export
{
/**
* dropDatabase
*
* drop an existing database
*
* @param string $databaseFile Path of the database that should be dropped
* @throws Doctrine_Export_Exception if the database file does not exist
* @throws Doctrine_Export_Exception if something failed during the removal of the database file
* @return void
*/
public function dropDatabase($databaseFile)
{
if ( ! @file_exists($databaseFile)) {
throw new Doctrine_Export_Exception('database does not exist');
}
$result = @unlink($databaseFile);
if ( ! $result) {
throw new Doctrine_Export_Exception('could not remove the database file');
}
}
/**
* createDatabase
*
* Create sqlite database file
*
* @param string $databaseFile Path of the database that should be dropped
* @return void
*/
public function createDatabase($databaseFile)
{
return new PDO('sqlite:' . $databaseFile);
}
/**
* 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)
{
$name = $this->conn->formatter->getIndexName($name);
$name = $this->conn->quoteIdentifier($name);
$type = '';
if (isset($definition['type'])) {
switch (strtolower($definition['type'])) {
case 'unique':
$type = strtoupper($definition['type']) . ' ';
break;
default:
throw new Doctrine_Export_Exception(
'Unknown type ' . $definition['type'] . ' for index ' . $name . ' in table ' . $table
);
}
}
$query = 'CREATE ' . $type . '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 = $this->conn->quoteIdentifier($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 = $this->conn->quoteIdentifier($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 $options An associative array of table options:
*
* @return void
*/
public function createTableSql($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);
$autoinc = false;
foreach($fields as $field) {
if (isset($field['autoincrement']) && $field['autoincrement'] ||
(isset($field['autoinc']) && $field['autoinc'])) {
$autoinc = true;
break;
}
}
if ( ! $autoinc && isset($options['primary']) && ! empty($options['primary'])) {
$keyColumns = array_values($options['primary']);
$keyColumns = array_map(array($this->conn, 'quoteIdentifier'), $keyColumns);
$queryFields.= ', PRIMARY KEY('.implode(', ', $keyColumns).')';
}
$name = $this->conn->quoteIdentifier($name, true);
$sql = 'CREATE TABLE ' . $name . ' (' . $queryFields;
if ($check = $this->getCheckDeclaration($fields)) {
$sql .= ', ' . $check;
}
if (isset($options['checks']) && $check = $this->getCheckDeclaration($options['checks'])) {
$sql .= ', ' . $check;
}
$sql .= ')';
$query[] = $sql;
if (isset($options['indexes']) && ! empty($options['indexes'])) {
foreach ($options['indexes'] as $index => $definition) {
$query[] = $this->createIndexSql($name, $index, $definition);
}
}
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['feferred'])) {
$query .= ' INITIALLY DEFERRED';
} else {
$query .= ' INITIALLY IMMEDIATE';
}
return $query;
}
/**
* create sequence
*
* @param string $seqName name of the sequence to be created
* @param string $start start value of the sequence; default is 1
* @param array $options An associative array of table options:
* array(
* 'comment' => 'Foo',
* 'charset' => 'utf8',
* 'collate' => 'utf8_unicode_ci',
* );
* @return boolean
*/
public function createSequence($seqName, $start = 1, array $options = array())
{
$sequenceName = $this->conn->quoteIdentifier($this->conn->formatter->getSequenceName($seqName), true);
$seqcolName = $this->conn->quoteIdentifier($this->conn->getAttribute(Doctrine_Core::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 $sequenceName name of the sequence to be dropped
* @return string
*/
public function dropSequenceSql($sequenceName)
{
$sequenceName = $this->conn->quoteIdentifier($this->conn->formatter->getSequenceName($sequenceName), true);
return 'DROP TABLE ' . $sequenceName;
}
public function alterTableSql($name, array $changes, $check = false)
{
if ( ! $name) {
throw new Doctrine_Export_Exception('no valid table name specified');
}
foreach ($changes as $changeName => $change) {
switch ($changeName) {
case 'add':
case 'change':
case 'rename':
case 'name':
break;
default:
throw new Doctrine_Export_Exception('change type "' . $changeName . '" not yet supported');
}
}
if ($check) {
return true;
}
$query = '';
if ( ! empty($changes['name'])) {
$change_name = $this->conn->quoteIdentifier($changes['name']);
$query .= 'RENAME TO ' . $change_name;
}
if ( ! empty($changes['add']) && is_array($changes['add'])) {
foreach ($changes['add'] as $fieldName => $field) {
if ($query) {
$query.= ', ';
}
$query.= 'ADD ' . $this->getDeclaration($fieldName, $field);
}
}
$rename = array();
if ( ! empty($changes['rename']) && is_array($changes['rename'])) {
foreach ($changes['rename'] as $fieldName => $field) {
$rename[$field['name']] = $fieldName;
}
}
if ( ! empty($changes['change']) && is_array($changes['change'])) {
foreach ($changes['change'] as $fieldName => $field) {
if ($query) {
$query.= ', ';
}
if (isset($rename[$fieldName])) {
$oldFieldName = $rename[$fieldName];
unset($rename[$fieldName]);
} else {
$oldFieldName = $fieldName;
}
$oldFieldName = $this->conn->quoteIdentifier($oldFieldName, true);
$query .= 'CHANGE ' . $oldFieldName . ' '
. $this->getDeclaration($fieldName, $field['definition']);
}
}
if ( ! empty($rename) && is_array($rename)) {
foreach ($rename as $renameName => $renamedField) {
if ($query) {
$query.= ', ';
}
$field = $changes['rename'][$renamedField];
$renamedField = $this->conn->quoteIdentifier($renamedField, true);
$query .= 'CHANGE ' . $renamedField . ' '
. $this->getDeclaration($field['name'], $field['definition']);
}
}
if ( ! $query) {
return false;
}
$name = $this->conn->quoteIdentifier($name, true);
return 'ALTER TABLE ' . $name . ' ' . $query;
}
/**
* createForeignKey
*
* Sqlite does not support foreign keys so we are not even going to do anything if this function is called
* to avoid any sql errors if a user tries to use this on sqlite
*
* @param string $table name of the table on which the foreign key is to be created
* @param array $definition associative array that defines properties of the foreign key to be created.
* @return string
*/
public function createForeignKey($table, array $definition)
{
return false;
}
}
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