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<?php
namespace LeanCloud;
use LeanCloud\Operation\IOperation;
use LeanCloud\Operation\SetOperation;
use LeanCloud\Operation\DeleteOperation;
use LeanCloud\Operation\ArrayOperation;
use LeanCloud\Operation\IncrementOperation;
class LeanObject {
public static $PRESERVED_KEYS = array("objectId", "updatedAt", "createdAt");
private static $_registeredClasses = array();
private $_className;
private $_data;
private $_operationSet;
private $_saveOption;
public function __construct($className=null, $objectId=null) {
$class = get_called_class();
$name = static::getRegisteredClassName();
$className = $className ? $className : $name;
if (!$className || ($class !== __CLASS__ && $className !== $name)) {
throw new \InvalidArgumentException(
"className is invalid.");
}
$this->_className = $className;
$this->_data = array();
$this->_operationSet = array();
$this->_data["objectId"] = $objectId;
}
public static function create($className, $objectId=null) {
if (isset(self::$_registeredClasses[$className])) {
return new self::$_registeredClasses[$className]($className,
$objectId);
} else {
return new LeanObject($className, $objectId);
}
}
public static function registerClass() {
if (isset(static::$className)) {
$class = get_called_class();
$name = static::$className;
if (isset(self::$_registeredClasses[$name])) {
$prevClass = self::$_registeredClasses[$name];
if ($class !== $prevClass) {
throw new \RuntimeException("className '$name' " .
"has already been registered.");
}
} else {
self::$_registeredClasses[static::$className] = get_called_class();
}
} else {
throw new \RuntimeException("Cannot register class without " .
"::className.");
}
}
private static function getRegisteredClassName() {
return array_search(get_called_class(), self::$_registeredClasses);
}
public function getClassName() {
return $this->_className;
}
public function disableBeforeHook() {
$this->_set("__before",
Client::signHook("__before_for_{$this->getClassName()}",
round(microtime(true) * 1000)));
}
public function disableAfterHook() {
$this->_set("__after",
Client::signHook("__after_for_{$this->getClassName()}",
round(microtime(true) * 1000)));
}
public function getPointer() {
if (!$this->getObjectId()) {
throw new \RuntimeException("LeanObject without ID cannot " .
"be serialized.");
}
return array(
"__type" => "Pointer",
"className" => $this->getClassName(),
"objectId" => $this->getObjectId(),
);
}
public function toJSON() {
$out = $this->toFullJSON();
unset($out["__type"]);
unset($out["className"]);
return $out;
}
public function toFullJSON($seen=array()) {
$out = array();
forEach($this->_data as $key => $val) {
$out[$key] = Client::encode($val, "toFullJSON", $seen);
}
$out["__type"] = "Object";
$out["className"] = $this->getClassName();
return $out;
}
public function getObjectId() {
return $this->get("objectId");
}
public function getCreatedAt() {
return $this->get("createdAt");
}
public function getUpdatedAt() {
return $this->get("updatedAt");
}
private function _set($key, $val) {
if ($key === "ACL" &&
!($val instanceof ACL)) {
throw new RuntimeException("Invalid ACL.");
}
if (!($val instanceof IOperation)) {
$val = new SetOperation($key, $val);
}
$this->_applyOperation($val);
return $this;
}
public function set($key, $val) {
if (in_array($key, self::$PRESERVED_KEYS)) {
throw new \RuntimeException("Preserved field could not be set.");
}
return $this->_set($key, $val);
}
public function setACL(ACL $acl) {
return $this->_set("ACL", $acl);
}
public function getACL() {
return $this->get("ACL");
}
public function delete($key) {
$this->_applyOperation(new DeleteOperation($key));
return $this;
}
public function get($key) {
if (!isset($this->_data[$key])) {
return null;
}
$val = $this->_data[$key];
if ($val instanceof Relation) {
return $this->getRelation($key);
}
return $this->_data[$key];
}
public function increment($key, $amount = 1) {
$this->_applyOperation(new IncrementOperation($key, $amount));
return $this;
}
private function _getPreviousOp($key) {
if (isset($this->_operationSet[$key])) {
return $this->_operationSet[$key];
}
return null;
}
private function _applyOperation($operation) {
$key = $operation->getKey();
$oldval = $this->get($key);
$newval = $operation->applyOn($oldval, $this);
if ($newval !== null) {
$this->_data[$key] = $newval;
} else if (isset($this->_data[$key])) {
unset($this->_data[$key]);
}
$prevOp = $this->_getPreviousOp($key);
$newOp = $prevOp ? $operation->mergeWith($prevOp) : $operation;
$this->_operationSet[$key] = $newOp;
}
public function addIn($key, $val) {
$this->_applyOperation(new ArrayOperation($key, array($val), "Add"));
return $this;
}
public function addUniqueIn($key, $val) {
$this->_applyOperation(new ArrayOperation($key,
array($val),
"AddUnique"));
return $this;
}
public function removeIn($key, $val) {
$this->_applyOperation(new ArrayOperation($key, array($val), "Remove"));
return $this;
}
public function hasData() {
$keys = array_keys($this->_data);
return $keys !== array("objectId");
}
public function isDirty() {
return !empty($this->_operationSet);
}
private function getSaveData() {
return Client::encode($this->_operationSet);
}
public function save($option=null) {
if (!$this->isDirty()) {return;}
if ($option) {
$this->_saveOption = $option;
}
try {
$result = self::saveAll(array($this));
} catch (BatchRequestError $batchRequestError) {
$err = $batchRequestError->getFirst();
if ($err)
throw new CloudException($err["error"], $err["code"]);
}
return $result;
}
private function _mergeData($data) {
forEach(array("createdAt", "updatedAt") as $key) {
if (isset($data[$key]) && is_string($data[$key])) {
$data[$key] = array("__type" => "Date",
"iso" => $data[$key]);
}
}
forEach($data as $key => $val) {
$this->_data[$key] = Client::decode($val, $key);
}
}
public function mergeAfterSave($data) {
$this->_operationSet = array();
$this->_mergeData($data);
}
public function mergeAfterFetch($data) {
forEach($data as $key => $val) {
if (isset($this->_operationSet[$key])) {
unset($this->_operationSet[$key]);
}
}
$this->_mergeData($data);
}
public function fetch() {
try {
static::fetchAll(array($this));
} catch (BatchRequestError $batchRequestError) {
$err = $batchRequestError->getFirst();
if ($err)
throw new CloudException($err["error"], $err["code"]);
}
}
public function fetchAll($objects) {
$batch = array();
forEach($objects as $obj) {
if (!$obj->getObjectId()) {
throw new \RuntimeException("Cannot fetch object without ID.");
}
$batch[$obj->getObjectId()] = $obj;
}
if (empty($batch)) { return; }
$requests = array();
$objects = array();
forEach($batch as $obj) {
$requests[] = array(
"path" => "/1.1/classes/{$obj->getClassName()}" .
"/{$obj->getObjectId()}",
"method" => "GET"
);
$objects[] = $obj;
}
$sessionToken = User::getCurrentSessionToken();
$response = Client::batch($requests, $sessionToken);
$batchRequestError = new BatchRequestError();
forEach($objects as $i => $obj) {
if (isset($response[$i]["success"])) {
if (!empty($response[$i]["success"])) {
$obj->mergeAfterFetch($response[$i]["success"]);
} else {
$batchRequestError->add($requests[$i],
array("error" => "Object not found."));
}
}
}
if (!$batchRequestError->isEmpty()) {
throw $batchRequestError;
}
}
public function destroy() {
if (!$this->getObjectId()) {
return false;
}
try {
static::destroyAll(array($this));
} catch (BatchRequestError $batchRequestError) {
$err = $batchRequestError->getFirst();
if ($err)
throw new CloudException($err["error"], $err["code"]);
}
}
public function getQuery() {
return new Query($this->getClassName());
}
public function getRelation($key) {
$val = isset($this->_data[$key]) ? $this->_data[$key] : null;
if ($val) {
if ($val instanceof Relation) {
$val->setParentAndKey($this, $key);
return $val;
} else {
throw new \RuntimeException("Field {$key} is not relation.");
}
}
return new Relation($this, $key);
}
public static function traverse($value, &$seen, $func) {
if ($value instanceof LeanObject) {
if (!in_array($value, $seen)) {
$seen[] = $value;
static::traverse($value->_data, $seen, $func);
$func($value);
}
} else if (is_array($value)) {
forEach($value as $val) {
if (is_array($val)) {
static::traverse($val, $seen, $func);
} else if ($val instanceof LeanObject) {
static::traverse($val, $seen, $func);
} else {
$func($val);
}
}
} else {
$func($value);
}
}
public function findUnsavedChildren() {
$unsavedChildren = array();
$seen = array($this);
static::traverse($this->_data, $seen,
function($val) use (&$unsavedChildren) {
if (($val instanceof LeanObject) ||
($val instanceof File)) {
if ($val->isDirty()) {
$unsavedChildren[] = $val;
}
}
});
return $unsavedChildren;
}
public static function saveAll($objects) {
if (empty($objects)) { return; }
$unsavedChildren = array();
forEach($objects as $obj) {
$unsavedChildren = array_merge($unsavedChildren,
$obj->findUnsavedChildren());
}
$children = array();
forEach($unsavedChildren as $obj) {
if ($obj instanceof File) {
$obj->save();
} else if ($obj instanceof LeanObject) {
if (!in_array($obj, $children)) {
$children[] = $obj;
}
}
}
static::batchSave($children);
static::batchSave($objects);
}
private static function batchSave($objects, $batchSize=20) {
if (empty($objects)) { return; }
$batch = array();
$remaining = array();
$count = 0;
forEach($objects as $obj) {
if (!$obj->isDirty()) {
continue;
}
if ($count > $batchSize) {
$remaining[] = $obj;
$count++;
continue;
}
$count++;
$batch[] = $obj;
}
$path = "/1.1/classes";
$requests = array();
$objects = array();
forEach($batch as $obj) {
$req = array("body" => $obj->getSaveData());
if ($obj->getObjectId()) {
$req["method"] = "PUT";
$req["path"] = "{$path}/{$obj->getClassName()}" .
"/{$obj->getObjectId()}";
} else {
$req["method"] = "POST";
$req["path"] = "{$path}/{$obj->getClassName()}";
}
if ($obj->_saveOption) {
$req["params"] = $obj->_saveOption->encode();
}
$requests[] = $req;
$objects[] = $obj;
}
$sessionToken = User::getCurrentSessionToken();
$response = Client::batch($requests, $sessionToken);
forEach($objects as $i => $obj) {
if (isset($response[$i]["success"])) {
$obj->mergeAfterSave($response[$i]["success"]);
}
}
static::batchSave($remaining, $batchSize);
}
public static function destroyAll($objects) {
$batch = array();
forEach($objects as $obj) {
if (!$obj->getObjectId()) {
throw new \RuntimeException("Cannot destroy object without ID");
}
$batch[$obj->getObjectId()] = $obj;
}
if (empty($batch)) { return; }
$requests = array();
$objects = array();
forEach($batch as $obj) {
$requests[] = array(
"path" => "/1.1/classes/{$obj->getClassName()}" .
"/{$obj->getObjectId()}",
"method" => "DELETE"
);
$objects[] = $obj;
}
$sessionToken = User::getCurrentSessionToken();
$response = Client::batch($requests, $sessionToken);
}
}