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<?php
/*
* Copyright 2010-2013 by MODX, LLC.
*
* This file is part of xPDO.
*
* xPDO is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* xPDO is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* xPDO; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
* Suite 330, Boston, MA 02111-1307 USA
*/
/**
* The SQLite implementation of the xPDOManager class.
*
* @package xpdo
* @subpackage om.sqlite
*/
/**
* Include the parent {@link xPDOManager} class.
*/
require_once (dirname(dirname(__FILE__)) . '/xpdomanager.class.php');
/**
* Provides SQLite data source management for an xPDO instance.
*
* These are utility functions that only need to be loaded under special
* circumstances, such as creating tables, adding indexes, altering table
* structures, etc. xPDOManager class implementations are specific to a
* database driver and this instance is implemented for SQLite.
*
* @package xpdo
* @subpackage om.sqlite
*/
class xPDOManager_sqlite extends xPDOManager {
public function createSourceContainer($dsnArray = null, $username= null, $password= null, $containerOptions= array ()) {
$created = false;
if ($this->xpdo->getConnection(array(xPDO::OPT_CONN_MUTABLE => true))) {
$this->xpdo->log(xPDO::LOG_LEVEL_WARN, 'SQLite does not support source container creation');
if ($dsnArray === null) $dsnArray = xPDO::parseDSN($this->xpdo->getOption('dsn'));
if (is_array($dsnArray)) {
try {
$dbfile = $dsnArray['dbname'];
$created = !file_exists($dbfile);
} catch (Exception $e) {
$this->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Error creating source container: " . $e->getMessage());
}
}
}
return $created;
}
public function removeSourceContainer($dsnArray = null, $username= null, $password= null) {
$removed= false;
if ($this->xpdo->getConnection(array(xPDO::OPT_CONN_MUTABLE => true))) {
if ($dsnArray === null) $dsnArray = xPDO::parseDSN($this->xpdo->getOption('dsn'));
if (is_array($dsnArray)) {
try {
$dbfile = $dsnArray['dbname'];
if (file_exists($dbfile)) {
$removed = unlink($dbfile);
if (!$removed) {
$this->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Could not remove source container");
}
} else {
$removed= true;
}
} catch (Exception $e) {
$this->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Could not remove source container: " . $e->getMessage());
}
}
}
return $removed;
}
public function removeObjectContainer($className) {
$removed= false;
if ($this->xpdo->getConnection(array(xPDO::OPT_CONN_MUTABLE => true))) {
$instance= $this->xpdo->newObject($className);
if ($instance) {
$sql= 'DROP TABLE ' . $this->xpdo->getTableName($className);
$removed= $this->xpdo->exec($sql);
if ($removed === false && $this->xpdo->errorCode() !== '' && $this->xpdo->errorCode() !== PDO::ERR_NONE) {
$this->xpdo->log(xPDO::LOG_LEVEL_ERROR, 'Could not drop table ' . $className . "\nSQL: {$sql}\nERROR: " . print_r($this->xpdo->pdo->errorInfo(), true));
} else {
$removed= true;
$this->xpdo->log(xPDO::LOG_LEVEL_INFO, 'Dropped table' . $className . "\nSQL: {$sql}\n");
}
}
}
return $removed;
}
public function createObjectContainer($className) {
$created= false;
if ($this->xpdo->getConnection(array(xPDO::OPT_CONN_MUTABLE => true))) {
$instance= $this->xpdo->newObject($className);
if ($instance) {
$tableName= $this->xpdo->getTableName($className);
$existsStmt = $this->xpdo->query("SELECT COUNT(*) FROM {$tableName}");
if ($existsStmt && $existsStmt->fetchAll()) {
return true;
}
$tableMeta= $this->xpdo->getTableMeta($className);
$sql= 'CREATE TABLE ' . $tableName . ' (';
$fieldMeta = $this->xpdo->getFieldMeta($className, true);
$nativeGen = false;
$columns = array();
while (list($key, $meta)= each($fieldMeta)) {
$columns[] = $this->getColumnDef($className, $key, $meta);
if (array_key_exists('generated', $meta) && $meta['generated'] == 'native') $nativeGen = true;
}
$sql .= implode(', ', $columns);
$indexes = $this->xpdo->getIndexMeta($className);
$createIndices = array();
$tableConstraints = array();
if (!empty ($indexes)) {
foreach ($indexes as $indexkey => $indexdef) {
$indexkey = $this->xpdo->literal($instance->_table) . '_' . $indexkey;
$indexType = ($indexdef['primary'] ? 'PRIMARY KEY' : ($indexdef['unique'] ? 'UNIQUE' : 'INDEX'));
$index = $indexdef['columns'];
if (is_array($index)) {
$indexset= array ();
foreach ($index as $indexmember => $indexmemberdetails) {
$indexMemberDetails = $this->xpdo->escape($indexmember);
$indexset[]= $indexMemberDetails;
}
$indexset= implode(',', $indexset);
if (!empty($indexset)) {
switch ($indexType) {
case 'UNIQUE':
$createIndices[$indexkey] = "CREATE UNIQUE INDEX {$this->xpdo->escape($indexkey)} ON {$tableName} ({$indexset})";
break;
case 'INDEX':
$createIndices[$indexkey] = "CREATE INDEX {$this->xpdo->escape($indexkey)} ON {$tableName} ({$indexset})";
break;
case 'PRIMARY KEY':
if ($nativeGen) break;
$tableConstraints[]= "{$indexType} ({$indexset})";
break;
default:
$tableConstraints[]= "CONSTRAINT {$this->xpdo->escape($indexkey)} {$indexType} ({$indexset})";
break;
}
}
}
}
}
if (!empty($tableConstraints)) {
$sql .= ', ' . implode(', ', $tableConstraints);
}
$sql .= ")";
$created= $this->xpdo->exec($sql);
if ($created === false && $this->xpdo->errorCode() !== '' && $this->xpdo->errorCode() !== PDO::ERR_NONE) {
$this->xpdo->log(xPDO::LOG_LEVEL_ERROR, 'Could not create table ' . $tableName . "\nSQL: {$sql}\nERROR: " . print_r($this->xpdo->errorInfo(), true));
} else {
$created= true;
$this->xpdo->log(xPDO::LOG_LEVEL_INFO, 'Created table ' . $tableName . "\nSQL: {$sql}\n");
}
if ($created === true && !empty($createIndices)) {
foreach ($createIndices as $createIndexKey => $createIndex) {
$indexCreated = $this->xpdo->exec($createIndex);
if ($indexCreated === false && $this->xpdo->errorCode() !== '' && $this->xpdo->errorCode() !== PDO::ERR_NONE) {
$this->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Could not create index {$createIndexKey}: {$createIndex} " . print_r($this->xpdo->errorInfo(), true));
} else {
$this->xpdo->log(xPDO::LOG_LEVEL_INFO, "Created index {$createIndexKey} on {$tableName}: {$createIndex}");
}
}
}
}
}
return $created;
}
public function alterObjectContainer($className, array $options = array()) {
if ($this->xpdo->getConnection(array(xPDO::OPT_CONN_MUTABLE => true))) {
// TODO: Implement alterObjectContainer() method.
}
}
public function addConstraint($class, $name, array $options = array()) {
if ($this->xpdo->getConnection(array(xPDO::OPT_CONN_MUTABLE => true))) {
// TODO: Implement addConstraint() method.
}
}
public function addField($class, $name, array $options = array()) {
$result = false;
if ($this->xpdo->getConnection(array(xPDO::OPT_CONN_MUTABLE => true))) {
$className = $this->xpdo->loadClass($class);
if ($className) {
$meta = $this->xpdo->getFieldMeta($className, true);
if (is_array($meta) && array_key_exists($name, $meta)) {
$colDef = $this->getColumnDef($className, $name, $meta[$name]);
if (!empty($colDef)) {
$sql = "ALTER TABLE {$this->xpdo->getTableName($className)} ADD COLUMN {$colDef}";
if ($this->xpdo->exec($sql) !== false) {
$result = true;
} else {
$this->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Error adding field {$class}->{$name}: " . print_r($this->xpdo->errorInfo(), true), '', __METHOD__, __FILE__, __LINE__);
}
} else {
$this->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Error adding field {$class}->{$name}: Could not get column definition");
}
} else {
$this->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Error adding field {$class}->{$name}: No metadata defined");
}
}
}
return $result;
}
public function addIndex($class, $name, array $options = array()) {
$result = false;
if ($this->xpdo->getConnection(array(xPDO::OPT_CONN_MUTABLE => true))) {
$className = $this->xpdo->loadClass($class);
if ($className) {
$meta = $this->xpdo->getIndexMeta($className);
if (is_array($meta) && array_key_exists($name, $meta)) {
$indexType = ($meta[$name]['unique'] ? 'UNIQUE INDEX' : 'INDEX');
$idxDef = $this->getIndexDef($className, $name, $meta[$name]);
if (!empty($idxDef)) {
$sql = "CREATE {$indexType} ON {$this->xpdo->getTableName($className)} ({$idxDef})";
if ($this->xpdo->exec($sql) !== false) {
$result = true;
} else {
$this->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Error adding index {$name} to {$class}: " . print_r($this->xpdo->errorInfo(), true), '', __METHOD__, __FILE__, __LINE__);
}
} else {
$this->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Error adding index {$name} to {$class}: Could not get index definition");
}
} else {
$this->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Error adding index {$name} to {$class}: No metadata defined");
}
}
}
return $result;
}
public function alterField($class, $name, array $options = array()) {
$result = false;
if ($this->xpdo->getConnection(array(xPDO::OPT_CONN_MUTABLE => true))) {
// TODO: Implement alterField() method somehow, no support in sqlite for altering existing columns
}
return $result;
}
public function removeConstraint($class, $name, array $options = array()) {
$result = false;
if ($this->xpdo->getConnection(array(xPDO::OPT_CONN_MUTABLE => true))) {
// TODO: Implement removeConstraint() method.
}
return $result;
}
public function removeField($class, $name, array $options = array()) {
$result = false;
if ($this->xpdo->getConnection(array(xPDO::OPT_CONN_MUTABLE => true))) {
// TODO: Implement removeField() method somehow, no support in sqlite for dropping existing columns
}
return $result;
}
public function removeIndex($class, $name, array $options = array()) {
$result = false;
if ($this->xpdo->getConnection(array(xPDO::OPT_CONN_MUTABLE => true))) {
$className = $this->xpdo->loadClass($class);
if ($className) {
$sql = "DROP INDEX {$this->xpdo->escape($name)}";
if ($this->xpdo->exec($sql) !== false) {
$result = true;
} else {
$this->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Error removing index {$name} from {$class}: " . print_r($this->xpdo->errorInfo(), true), '', __METHOD__, __FILE__, __LINE__);
}
}
}
return $result;
}
protected function getColumnDef($class, $name, $meta, array $options = array()) {
$pk = $this->xpdo->getPK($class);
$pktype = $this->xpdo->getPKType($class);
$dbtype= strtoupper($meta['dbtype']);
$precision= isset ($meta['precision']) && !preg_match('/ENUM/i', $dbtype) ? '(' . $meta['precision'] . ')' : '';
if (preg_match('/ENUM/i', $dbtype)) {
$dbtype= 'CHAR';
}
$notNull= !isset ($meta['null'])
? false
: ($meta['null'] === 'false' || empty($meta['null']));
$null= $notNull ? ' NOT NULL' : ' NULL';
$extra = '';
if (isset ($meta['index']) && $meta['index'] == 'pk' && !is_array($pk) && $pktype == 'integer' && isset ($meta['generated']) && $meta['generated'] == 'native') {
$extra= ' PRIMARY KEY AUTOINCREMENT';
$options['nativeGen'] = true;
$null= '';
}
if (empty ($extra) && isset ($meta['extra'])) {
$extra= ' ' . $meta['extra'];
}
$default= '';
if (array_key_exists('default', $meta)) {
$defaultVal= $meta['default'];
if ($defaultVal === null || strtoupper($defaultVal) === 'NULL' || in_array($this->xpdo->driver->getPhpType($dbtype), array('integer', 'float')) || (in_array($meta['phptype'], array('datetime', 'date', 'timestamp', 'time')) && in_array($defaultVal, array_merge($this->xpdo->driver->_currentTimestamps, $this->xpdo->driver->_currentDates, $this->xpdo->driver->_currentTimes)))) {
$default= ' DEFAULT ' . $defaultVal;
} else {
$default= ' DEFAULT \'' . $defaultVal . '\'';
}
}
$attributes= (isset ($meta['attributes'])) ? ' ' . $meta['attributes'] : '';
if (strpos(strtolower($attributes), 'unsigned') !== false) {
$result = $this->xpdo->escape($name) . ' ' . $dbtype . $precision . $attributes . $null . $default . $extra;
} else {
$result = $this->xpdo->escape($name) . ' ' . $dbtype . $precision . $null . $default . $attributes . $extra;
}
return $result;
}
protected function getIndexDef($class, $name, $meta, array $options = array()) {
$result = '';
$index = isset($meta['columns']) ? $meta['columns'] : null;
if (is_array($index)) {
$indexset= array ();
foreach ($index as $indexmember => $indexmemberdetails) {
$indexMemberDetails = $this->xpdo->escape($indexmember);
$indexset[]= $indexMemberDetails;
}
$result= implode(',', $indexset);
}
return $result;
}
}