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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
*/
/**
* Defines a class that represents an xPDOObject within a transportable package.
*
* @package xpdo
* @subpackage transport
*/
/**
* Represents an xPDOObject within an {@link xPDOTransport} package.
*
* @package xpdo
* @subpackage transport
*/
class xPDOObjectVehicle extends xPDOVehicle {
public $class = 'xPDOObjectVehicle';
/**
* Retrieve an xPDOObject instance represented in this vehicle.
*
* This method returns the main object contained in the payload, but you can optionally specify
* a related_objects node within the payload to retrieve a specific dependent object.
*/
public function get(& $transport, $options = array (), $element = null) {
$object = null;
$element = parent :: get($transport, $options, $element);
if (isset ($element['class']) && isset ($element['object'])) {
$vClass = $element['class'];
if (!empty ($element['package'])) {
$pkgPrefix = $element['package'];
$pkgKeys = array_keys($transport->xpdo->packages);
if ($pkgFound = in_array($pkgPrefix, $pkgKeys)) {
$pkgPrefix = '';
}
elseif ($pos = strpos($pkgPrefix, '.')) {
$prefixParts = explode('.', $pkgPrefix);
$prefix = '';
foreach ($prefixParts as $prefixPart) {
$prefix .= $prefixPart;
$pkgPrefix = substr($pkgPrefix, $pos +1);
if ($pkgFound = in_array($prefix, $pkgKeys))
break;
$prefix .= '.';
$pos = strpos($pkgPrefix, '.');
}
if (!$pkgFound)
$pkgPrefix = $element['package'];
}
$vClass = (!empty ($pkgPrefix) ? $pkgPrefix . '.' : '') . $vClass;
}
$object = $transport->xpdo->newObject($vClass);
if (is_object($object) && $object instanceof xPDOObject) {
$options = array_merge($options, $element);
$setKeys = false;
if (isset ($options[xPDOTransport::PRESERVE_KEYS])) {
$setKeys = (boolean) $options[xPDOTransport::PRESERVE_KEYS];
}
$object->fromJSON($element['object'], '', $setKeys, true);
}
}
return $object;
}
/**
* Install the xPDOObjects represented by vehicle into the transport host.
*/
public function install(& $transport, $options) {
$parentObj = null;
$parentMeta = null;
$installed = $this->_installObject($transport, $options, $this->payload, $parentObj, $parentMeta);
return $installed;
}
/**
* Install a single xPDOObject from the vehicle payload.
*
* @param xPDOTransport $transport The host xPDOTransport instance.
* @param array $options Any optional attributes to apply to the installation.
* @param array $element A node of the payload representing the object to install.
* @param xPDOObject &$parentObject A reference to the object serving as a parent to the one
* being installed.
* @param array $fkMeta The foreign key relationship data that defines the relationship with the
* parentObject.
*/
protected function _installObject(& $transport, $options, $element, & $parentObject, $fkMeta) {
$saved = false;
$preExistingMode = xPDOTransport::PRESERVE_PREEXISTING;
$upgrade = false;
$exists = false;
/** @var xPDOObject $object */
$object = $this->get($transport, $options, $element);
if (is_object($object) && $object instanceof xPDOObject) {
$vOptions = array_merge($options, $element);
$vClass = $vOptions['class'];
if ($transport->xpdo->getDebug() === true)
$transport->xpdo->log(xPDO::LOG_LEVEL_DEBUG, "Installing Vehicle: " . print_r($vOptions, true));
if ($parentObject !== null && $fkMeta !== null) {
if ($fkMeta['owner'] == 'local') {
if ($object->get($fkMeta['foreign']) !== $parentObject->get($fkMeta['local'])) {
$object->set($fkMeta['foreign'], $parentObject->get($fkMeta['local']));
}
}
}
$preserveKeys = !empty ($vOptions[xPDOTransport::PRESERVE_KEYS]);
$upgrade = !empty ($vOptions[xPDOTransport::UPDATE_OBJECT]);
if (!empty ($vOptions[xPDOTransport::UNIQUE_KEY])) {
$uniqueKey = $object->get($vOptions[xPDOTransport::UNIQUE_KEY]);
if (is_array($uniqueKey)) {
$criteria = array_combine($vOptions[xPDOTransport::UNIQUE_KEY], $uniqueKey);
} else {
$criteria = array (
$vOptions[xPDOTransport::UNIQUE_KEY] => $uniqueKey
);
}
}
elseif (isset ($vOptions['key_expr']) && isset ($vOptions['key_format'])) {
//TODO: implement ability to generate new keys
} else {
$pk = $object->getPK();
$nativeKey = $vOptions[xPDOTransport::NATIVE_KEY];
if (is_array($pk) && is_array($nativeKey)) {
$criteria = array_combine($pk, $nativeKey);
} elseif (is_string($pk) && is_scalar($nativeKey)) {
$criteria = array($pk => $nativeKey);
} else {
$criteria = $nativeKey;
$transport->xpdo->log(xPDO::LOG_LEVEL_WARN, 'The native key provided in the vehicle does not match the primary key field(s) for the object: ' . print_r($nativeKey, true));
}
}
if (!empty ($vOptions[xPDOTransport::PREEXISTING_MODE])) {
$preExistingMode = intval($vOptions[xPDOTransport::PREEXISTING_MODE]);
}
if ($this->validate($transport, $object, $vOptions)) {
if (!$this->_installRelated($transport, $object, $element, $options, 'foreign')) {
$transport->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Could not install related objects with foreign owned keys for vehicle object of class {$vClass}; criteria: " . print_r($criteria, true));
if ($transport->xpdo->getDebug() === true) $transport->xpdo->log(xPDO::LOG_LEVEL_DEBUG, 'Could not install related objects for vehicle: ' . print_r($vOptions, true));
} elseif (!empty($vOptions[xPDOTransport::UNIQUE_KEY])) {
$uniqueKey = $object->get($vOptions[xPDOTransport::UNIQUE_KEY]);
if (is_array($uniqueKey)) {
$criteria = array_combine($vOptions[xPDOTransport::UNIQUE_KEY], $uniqueKey);
} else {
$criteria = array (
$vOptions[xPDOTransport::UNIQUE_KEY] => $uniqueKey
);
}
} else {
$pk = $object->getPK();
$nativeKey = $object->get($pk);
if (is_array($pk) && is_array($nativeKey)) {
$criteria = array_combine($pk, $nativeKey);
} elseif (is_string($pk) && is_scalar($nativeKey)) {
$criteria = array($pk => $nativeKey);
} else {
$criteria = $nativeKey;
$transport->xpdo->log(xPDO::LOG_LEVEL_WARN, 'The native key provided in the vehicle does not match the primary key field(s) for the object: ' . print_r($nativeKey, true));
}
}
/** @var xPDOObject $obj */
if ($obj = $transport->xpdo->getObject($vClass, $criteria)) {
$exists = true;
if ($preExistingMode !== xPDOTransport::REMOVE_PREEXISTING) {
$transport->_preserved[$vOptions['guid']] = array (
'criteria' => $criteria,
'object' => $obj->toArray('', true)
);
}
if ($upgrade) {
$obj->fromArray($object->toArray('', true), '', false, true);
$object = $obj;
} else {
if (is_array($criteria)) {
$obj->fromArray($criteria, '', true);
}
$object = $obj;
}
}
elseif ($transport->xpdo->getDebug() === true) {
$transport->xpdo->log(xPDO::LOG_LEVEL_DEBUG, "Object for class {$vClass} not found; criteria: " . print_r($criteria, true));
}
if (!$exists || ($exists && $upgrade)) {
if ($transport->xpdo->getOption('dbtype') === 'sqlsrv' && !$exists && $preserveKeys) {
$transport->xpdo->exec("SET IDENTITY_INSERT {$transport->xpdo->getTableName($vClass)} ON");
}
$saved = $object->save();
if ($transport->xpdo->getOption('dbtype') === 'sqlsrv' && !$exists && $preserveKeys) {
$transport->xpdo->exec("SET IDENTITY_INSERT {$transport->xpdo->getTableName($vClass)} OFF");
}
if (!$saved) {
$transport->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Error saving vehicle object of class {$vClass}; criteria: " . print_r($criteria, true));
if ($transport->xpdo->getDebug() === true) $transport->xpdo->log(xPDO::LOG_LEVEL_DEBUG, "Error saving vehicle object: " . print_r($vOptions, true));
}
} else {
$transport->xpdo->log(xPDO::LOG_LEVEL_INFO, "Skipping vehicle object of class {$vClass} (data object exists and cannot be upgraded); criteria: " . print_r($criteria, true));
if ($transport->xpdo->getDebug() === true) $transport->xpdo->log(xPDO::LOG_LEVEL_DEBUG, 'Skipping vehicle object (data object exists and cannot be upgraded): ' . print_r($vOptions, true));
}
if (($saved || $exists)) {
if ($parentObject !== null && $fkMeta !== null) {
if ($fkMeta['owner'] == 'foreign') {
if ($object->get($fkMeta['foreign']) !== $parentObject->get($fkMeta['local'])) {
$parentObject->set($fkMeta['local'], $object->get($fkMeta['foreign']));
}
}
}
}
if (($saved || $exists) && !$this->_installRelated($transport, $object, $element, $options, 'local')) {
$transport->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Could not install related objects with locally owned keys for vehicle object of class {$vClass}; criteria: " . print_r($criteria, true));
if ($transport->xpdo->getDebug() === true) $transport->xpdo->log(xPDO::LOG_LEVEL_DEBUG, 'Could not install related objects for vehicle: ' . print_r($vOptions, true));
}
if ($parentObject === null && !$this->resolve($transport, $object, $vOptions)) {
$transport->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Could not resolve vehicle for object of class {$vClass}; criteria: " . print_r($criteria, true));
if ($transport->xpdo->getDebug() === true) $transport->xpdo->log(xPDO::LOG_LEVEL_DEBUG, 'Could not resolve vehicle: ' . print_r($vOptions, true));
}
} else {
$transport->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Could not validate vehicle object of class {$vClass}; criteria: " . print_r($criteria, true));
if ($transport->xpdo->getDebug() === true) $transport->xpdo->log(xPDO::LOG_LEVEL_DEBUG, 'Could not validate vehicle object: ' . print_r($vOptions, true));
}
} else {
$transport->xpdo->log(xPDO::LOG_LEVEL_ERROR, 'Could not load vehicle!');
}
return ($saved || ($exists && !$upgrade));
}
/**
* Installs a related object from the vehicle.
*
* @param xPDOTransport &$transport
* @param xPDOObject &$parent
* @param array $element
* @param array $options
* @return bool
*/
public function _installRelated(& $transport, & $parent, $element, $options, $owner = '') {
$installed = true;
if (is_object($parent) && isset ($element[xPDOTransport::RELATED_OBJECTS]) && is_array($element[xPDOTransport::RELATED_OBJECTS])) {
foreach ($element[xPDOTransport::RELATED_OBJECTS] as $rAlias => $rVehicles) {
$rMeta = $parent->getFKDefinition($rAlias);
if ($rMeta) {
if (!empty($owner) && $owner !== $rMeta['owner']) continue;
$rOptions = $options;
if (isset($element[xPDOTransport::RELATED_OBJECT_ATTRIBUTES])) {
if (isset($element[xPDOTransport::RELATED_OBJECT_ATTRIBUTES][$rAlias])) {
$rOptions = array_merge($rOptions, $element[xPDOTransport::RELATED_OBJECT_ATTRIBUTES][$rAlias]);
} elseif (isset($element[xPDOTransport::RELATED_OBJECT_ATTRIBUTES][$rMeta['class']])) {
$rOptions = array_merge($rOptions, $element[xPDOTransport::RELATED_OBJECT_ATTRIBUTES][$rMeta['class']]);
}
}
foreach ($rVehicles as $rKey => $rVehicle) {
$installed = $this->_installObject($transport, $rOptions, $rVehicle, $parent, $rMeta);
}
}
}
}
return $installed;
}
/**
* Uninstalls vehicle artifacts from the transport host.
*/
public function uninstall(& $transport, $options) {
$parentObj = null;
$parentMeta = null;
return $this->_uninstallObject($transport, $options, $this->payload, $parentObj, $parentMeta);
}
/**
* Uninstall the xPDOObjects represented by a vehicle element from the transport host.
*/
public function _uninstallObject(& $transport, $options, $element, & $parentObject, $fkMeta) {
$uninstalled = false;
$removed = false;
$uninstallObject = true;
$upgrade = false;
$preExistingMode = xPDOTransport::PRESERVE_PREEXISTING;
$object = $this->get($transport, $options, $element);
if (is_object($object) && $object instanceof xPDOObject) {
$vOptions = array_merge($options, $element);
$vClass = $vOptions['class'];
$upgrade = !empty($vOptions[xPDOTransport::UPDATE_OBJECT]);
$preserveKeys = !empty ($vOptions[xPDOTransport::PRESERVE_KEYS]);
if (!empty ($vOptions[xPDOTransport::UNIQUE_KEY])) {
$uniqueKey = $object->get($vOptions[xPDOTransport::UNIQUE_KEY]);
if (is_array($uniqueKey)) {
$criteria = array_combine($vOptions[xPDOTransport::UNIQUE_KEY], $uniqueKey);
} else {
$criteria = array (
$vOptions[xPDOTransport::UNIQUE_KEY] => $uniqueKey
);
}
} else {
$criteria = $vOptions[xPDOTransport::NATIVE_KEY];
}
if (!empty ($vOptions[xPDOTransport::PREEXISTING_MODE])) {
$preExistingMode = intval($vOptions[xPDOTransport::PREEXISTING_MODE]);
}
if ($this->validate($transport, $object, $vOptions)) {
$uninstalled = true;
if (isset($vOptions[xPDOTransport::UNINSTALL_OBJECT])) {
$uninstallObject = !empty($vOptions[xPDOTransport::UNINSTALL_OBJECT]);
}
$exists = false;
if ($obj = $transport->xpdo->getObject($vClass, $criteria)) {
$exists = true;
$object = $obj;
}
if ($exists) {
if ($uninstallObject && $upgrade && (!isset ($transport->_preserved[$vOptions['guid']]) || $preExistingMode === xPDOTransport::REMOVE_PREEXISTING)) {
$removed = $object->remove();
if (!$removed) {
$uninstalled = false;
$transport->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Error removing vehicle object of class {$vClass}; criteria: " . print_r($criteria, true));
if ($transport->xpdo->getDebug() === true) $transport->xpdo->log(xPDO::LOG_LEVEL_DEBUG, 'Error removing vehicle object: ' . print_r($vOptions, true));
}
}
if ($upgrade && $preExistingMode === xPDOTransport::RESTORE_PREEXISTING) {
if (isset ($transport->_preserved[$vOptions['guid']])) {
$preserved = $transport->_preserved[$vOptions['guid']]['object'];
$object->fromArray($preserved, '', true, true);
$restored = $object->save();
if (!$restored) {
$transport->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Error restoring preserved object of class {$vClass}: " . print_r($transport->_preserved[$vOptions['guid']], true));
}
}
}
} else {
$transport->xpdo->log(xPDO::LOG_LEVEL_WARN, 'Skipping ' . $vClass . ' object (data object does not exist and cannot be removed): ' . print_r($criteria, true));
}
if (!$this->_uninstallRelated($transport, $object, $element, $options)) {
$transport->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Could not uninstall related objects for vehicle object of class {$vClass}; criteria: " . print_r($criteria, true));
if ($transport->xpdo->getDebug() === true) $transport->xpdo->log(xPDO::LOG_LEVEL_DEBUG, 'Could not uninstall related objects for vehicle: ' . print_r($vOptions, true));
}
if ($parentObject === null && !$this->resolve($transport, $object, $vOptions)) {
$transport->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Could not resolve vehicle for object of class {$vClass}; criteria: " . print_r($criteria, true));
if ($transport->xpdo->getDebug() === true) $transport->xpdo->log(xPDO::LOG_LEVEL_DEBUG, 'Could not resolve vehicle: ' . print_r($vOptions, true));
}
} else {
$transport->xpdo->log(xPDO::LOG_LEVEL_ERROR, "Could not validate vehicle object of class {$vClass}; criteria: " . print_r($criteria, true));
if ($transport->xpdo->getDebug() === true) $transport->xpdo->log(xPDO::LOG_LEVEL_DEBUG, 'Could not validate vehicle object: ' . print_r($vOptions, true));
}
} else {
$transport->xpdo->log(xPDO::LOG_LEVEL_ERROR, 'Problem instantiating object from vehicle');
if ($transport->xpdo->getDebug() === true) $transport->xpdo->log(xPDO::LOG_LEVEL_DEBUG, 'Problem instantiating object from vehicle: ' . print_r(array_merge($options, $element), true));
}
return $uninstalled;
}
/**
* Uninstalls related objects from the vehicle.
*/
public function _uninstallRelated(& $transport, & $parent, $element, $options) {
$uninstalled = true;
if (is_object($parent) && isset ($element[xPDOTransport::RELATED_OBJECTS]) && is_array($element[xPDOTransport::RELATED_OBJECTS])) {
$uninstalled = false;
foreach ($element[xPDOTransport::RELATED_OBJECTS] as $rAlias => $rVehicles) {
$parentClass = $parent->_class;
$rMeta = $transport->xpdo->getFKDefinition($parentClass, $rAlias);
if ($rMeta) {
$results = array();
foreach ($rVehicles as $rKey => $rVehicle) {
$results[] = $this->_uninstallObject($transport, $options, $rVehicle, $parent, $rMeta);
}
$uninstalled = (array_search(false, $results) === false);
}
}
}
return $uninstalled;
}
/**
* Put an xPDOObject representation into a transport package.
*
* This implementation supports the inclusion of related objects. Simply instantiate the related
* objects that you want to include in the vehicle on the main object, and set
* xPDOTransport::RELATED_OBJECTS => true in your attributes.
*/
public function put(& $transport, & $object, $attributes = array ()) {
parent :: put($transport, $object, $attributes);
if (is_object($object)) {
if (!isset ($this->payload['package'])) {
if ($object instanceof xPDOObject) {
$packageName = $object->_package;
} else {
$packageName = '';
}
$this->payload['package'] = $packageName;
}
if ($object instanceof xPDOObject) {
$nativeKey = $object->getPrimaryKey();
$this->payload['object'] = $object->toJSON('', true);
$this->payload['native_key'] = $nativeKey;
$this->payload['signature'] = md5($this->payload['class'] . '_' . $this->payload['guid']);
if (isset ($this->payload[xPDOTransport::RELATED_OBJECTS]) && !empty ($this->payload[xPDOTransport::RELATED_OBJECTS])) {
$relatedObjects = array ();
foreach ($object->_relatedObjects as $rAlias => $related) {
if (is_array($related)) {
foreach ($related as $rKey => $rObj) {
if (!isset ($relatedObjects[$rAlias]))
$relatedObjects[$rAlias] = array ();
$guid = md5(uniqid(rand(), true));
$relatedObjects[$rAlias][$guid] = array ();
$this->_putRelated($transport, $rAlias, $rObj, $relatedObjects[$rAlias][$guid]);
}
}
elseif (is_object($related)) {
if (!isset ($relatedObjects[$rAlias]))
$relatedObjects[$rAlias] = array ();
$guid = md5(uniqid(rand(), true));
$relatedObjects[$rAlias][$guid] = array ();
$this->_putRelated($transport, $rAlias, $related, $relatedObjects[$rAlias][$guid]);
}
}
if (!empty ($relatedObjects))
$this->payload['related_objects'] = $relatedObjects;
}
}
elseif (is_object($object)) {
$this->payload['object'] = $transport->xpdo->toJSON(get_object_vars($object));
$this->payload['native_key'] = $this->payload['guid'];
$this->payload['signature'] = md5($this->payload['class'] . '_' . $this->payload['guid']);
}
}
}
/**
* Recursively put related objects into the vehicle.
*
* @access protected
* @param xPDOTransport $transport The host xPDOTransport instance.
* @param string $alias The alias representing the relation to the parent object.
* @param xPDOObject &$object A reference to the dependent object being added into the vehicle.
* @param array $payloadElement An element of the payload to place the dependent object in.
*/
protected function _putRelated(& $transport, $alias, & $object, & $payloadElement) {
if (is_array($payloadElement)) {
if (is_object($object) && $object instanceof xPDOObject) {
if (isset ($this->payload['related_object_attributes'][$alias]) && is_array($this->payload['related_object_attributes'][$alias])) {
$payloadElement = array_merge($payloadElement, $this->payload['related_object_attributes'][$alias]);
}
elseif (isset ($this->payload['related_object_attributes'][$object->_class]) && is_array($this->payload['related_object_attributes'][$object->_class])) {
$payloadElement = array_merge($payloadElement, $this->payload['related_object_attributes'][$object->_class]);
}
$payloadElement['class'] = $object->_class;
$nativeKey = $object->getPrimaryKey();
$payloadElement['object'] = $object->toJSON('', true);
$payloadElement['guid'] = md5(uniqid(rand(), true));
$payloadElement['native_key'] = $nativeKey;
$payloadElement['signature'] = md5($object->_class . '_' . $payloadElement['guid']);
$relatedObjects = array ();
foreach ($object->_relatedObjects as $rAlias => $related) {
if (is_array($related)) {
foreach ($related as $rKey => $rObj) {
if (!isset ($relatedObjects[$rAlias]))
$relatedObjects[$rAlias] = array ();
$guid = md5(uniqid(rand(), true));
$relatedObjects[$rAlias][$guid] = array ();
$this->_putRelated($transport, $rAlias, $rObj, $relatedObjects[$rAlias][$guid]);
}
}
elseif (is_object($related)) {
if (!isset ($relatedObjects[$rAlias]))
$relatedObjects[$rAlias] = array ();
$guid = md5(uniqid(rand(), true));
$relatedObjects[$rAlias][$guid] = array ();
$this->_putRelated($transport, $rAlias, $related, $relatedObjects[$rAlias][$guid]);
}
}
if (!empty ($relatedObjects))
$payloadElement['related_objects'] = $relatedObjects;
}
}
}
}