phpOMS/DataStorage/Database/Mapper/DeleteMapper.php

257 lines
8.3 KiB
PHP

<?php
/**
* Orange Management
*
* PHP Version 8.0
*
* @package phpOMS\DataStorage\Database\Mapper
* @copyright Dennis Eichhorn
* @license OMS License 1.0
* @version 1.0.0
* @link https://orange-management.org
*/
declare(strict_types=1);
namespace phpOMS\DataStorage\Database\Mapper;
use phpOMS\DataStorage\Database\Exception\InvalidMapperException;
use phpOMS\DataStorage\Database\Query\Builder;
/**
* Delete mapper (DELETE).
*
* @todo: allow to define where clause if no object is loaded yet
*
* @package phpOMS\DataStorage\Database\Mapper
* @license OMS License 1.0
* @link https://orange-management.org
* @since 1.0.0
*/
class DeleteMapper extends DataMapperAbstract
{
public function delete() : self
{
$this->type = MapperType::DELETE;
return $this;
}
public function execute(...$options) : mixed
{
switch($this->type) {
case MapperType::DELETE:
return $this->executeDelete(...$options);
default:
return null;
}
}
public function executeDelete(mixed $obj) : mixed
{
if ($obj === null) {
$obj = $this->mapper::get()->execute(); // todo: pass where conditions to read mapper
}
$refClass = new \ReflectionClass($obj);
$objId = $this->mapper::getObjectId($obj, $refClass);
if (empty($objId)) {
return null;
}
$this->mapper::removeInitialized(static::class, $objId);
$this->deleteHasMany($refClass, $obj, $objId);
$this->deleteModel($obj, $objId, $refClass);
return $objId;
}
private function deleteModel(object $obj, mixed $objId, \ReflectionClass $refClass = null) : void
{
$query = new Builder($this->db);
$query->delete()
->from($this->mapper::TABLE)
->where($this->mapper::TABLE . '.' . $this->mapper::PRIMARYFIELD, '=', $objId);
$refClass = $refClass ?? new \ReflectionClass($obj);
$properties = $refClass->getProperties();
foreach ($properties as $property) {
$propertyName = $property->getName();
if (isset($this->mapper::HAS_MANY[$propertyName])) {
continue;
}
if (!($isPublic = $property->isPublic())) {
$property->setAccessible(true);
}
/**
* @todo Orange-Management/phpOMS#233
* On delete the relations and relation tables need to be deleted first
* The exception is of course the belongsTo relation.
*/
foreach ($this->mapper::COLUMNS as $key => $column) {
$value = $isPublic ? $obj->{$propertyName} : $property->getValue($obj);
if (isset($this->mapper::OWNS_ONE[$propertyName])
&& $column['internal'] === $propertyName
) {
$this->deleteOwnsOne($propertyName, $value);
break;
} elseif (isset($this->mapper::BELONGS_TO[$propertyName])
&& $column['internal'] === $propertyName
) {
$this->deleteBelongsTo($propertyName, $value);
break;
}
}
if (!$isPublic) {
$property->setAccessible(false);
}
}
$sth = $this->db->con->prepare($query->toSql());
if ($sth !== false) {
$sth->execute();
}
}
private function deleteBelongsTo(string $propertyName, mixed $obj) : mixed
{
if (!\is_object($obj)) {
return $obj;
}
/** @var class-string<DataMapperFactory> $mapper */
$mapper = $this->mapper::BELONGS_TO[$propertyName]['mapper'];
/** @var self $relMapper */
$relMapper = $this->createRelationMapper($mapper::delete(db: $this->db), $propertyName);
$relMapper->depth = $this->depth + 1;
return $relMapper->execute($obj);
}
private function deleteOwnsOne(string $propertyName, mixed $obj) : mixed
{
if (!\is_object($obj)) {
return $obj;
}
/** @var class-string<DataMapperFactory> $mapper */
$mapper = $this->mapper::OWNS_ONE[$propertyName]['mapper'];
/**
* @todo Orange-Management/phpOMS#??? [p:low] [t:question] [d:expert]
* Deleting a owned one object is not recommended since it can be owned by something else?
* Or does owns one mean that nothing else can have a relation to this model?
*/
/** @var self $relMapper */
$relMapper = $this->createRelationMapper($mapper::delete(db: $this->db), $propertyName);
$relMapper->depth = $this->depth + 1;
return $relMapper->execute($obj);
}
private function deleteHasMany(\ReflectionClass $refClass, object $obj, mixed $objId) : void
{
if (empty($this->with) || empty($this->mapper::HAS_MANY)) {
return;
}
foreach ($this->mapper::HAS_MANY as $propertyName => $rel) {
if (!isset($this->mapper::HAS_MANY[$propertyName]['mapper'])) {
throw new InvalidMapperException();
}
if (isset($rel['column']) || !isset($this->with[$propertyName])) {
continue;
}
$property = $refClass->getProperty($propertyName);
if (!($isPublic = $property->isPublic())) {
$property->setAccessible(true);
$values = $property->getValue($obj);
$property->setAccessible(false);
} else {
$values = $obj->{$propertyName};
}
if (!\is_array($values)) {
// conditionals
continue;
}
/** @var class-string<DataMapperFactory> $mapper */
$mapper = $this->mapper::HAS_MANY[$propertyName]['mapper'];
$objsIds = [];
$relReflectionClass = !empty($values) ? new \ReflectionClass(\reset($values)) : null;
foreach ($values as $key => &$value) {
if (!\is_object($value)) {
// Is scalar => already in database
$objsIds[$key] = $value;
continue;
}
$primaryKey = $mapper::getObjectId($value, $relReflectionClass);
// already in db
if (!empty($primaryKey)) {
$objsIds[$key] = $mapper::delete(db: $this->db)->execute($value);
continue;
}
/**
* @todo Orange-Management/phpOMS#233
* On delete the relations and relation tables need to be deleted first
* The exception is of course the belongsTo relation.
*/
}
$this->deleteRelationTable($propertyName, $objsIds, $objId);
}
}
public function deleteRelation(string $member, mixed $id1, mixed $id2) : bool
{
if (!isset($this->mapper::HAS_MANY[$member]) || !isset($this->mapper::HAS_MANY[$member]['external'])) {
return false;
}
$this->mapper::removeInitialized(static::class, $id1);
$this->deleteRelationTable($member, \is_array($id2) ? $id2 : [$id2], $id1);
return true;
}
public function deleteRelationTable(string $propertyName, array $objsIds, mixed $objId) : void
{
if (empty($objsIds)
|| $this->mapper::HAS_MANY[$propertyName]['table'] === $this->mapper::TABLE
|| $this->mapper::HAS_MANY[$propertyName]['table'] === $this->mapper::HAS_MANY[$propertyName]['mapper']::TABLE
) {
return;
}
foreach ($objsIds as $src) {
$relQuery = new Builder($this->db);
$relQuery->delete()
->from($this->mapper::HAS_MANY[$propertyName]['table'])
->where($this->mapper::HAS_MANY[$propertyName]['table'] . '.' . $this->mapper::HAS_MANY[$propertyName]['external'], '=', $src)
->where($this->mapper::HAS_MANY[$propertyName]['table'] . '.' . $this->mapper::HAS_MANY[$propertyName]['self'], '=', $objId, 'and');
$sth = $this->db->con->prepare($relQuery->toSql());
if ($sth !== false) {
$sth->execute();
}
}
}
}