DB Entities, SQL Update

core/Objects/DatabaseEntity/DatabaseEntity.class.php

@@ -0,0 +1,75 @@
+<?php
+
+namespace Objects\DatabaseEntity;
+
+use Driver\Logger\Logger;
+use Driver\SQL\Condition\Condition;
+use Driver\SQL\SQL;
+
+abstract class DatabaseEntity {
+
+  private static array $handlers = [];
+  private ?int $id;
+
+  public function __construct() {
+    $this->id = null;
+  }
+
+  public static function find(SQL $sql, int $id): ?DatabaseEntity {
+    $handler = self::getHandler();
+    return $handler->fetchOne($sql, $id);
+  }
+
+  public static function findAll(SQL $sql, ?Condition $condition): ?array {
+    $handler = self::getHandler();
+    return $handler->fetchMultiple($sql, $condition);
+  }
+
+  public function save(SQL $sql): bool {
+    $handler = self::getHandler();
+    $res = $handler->insertOrUpdate($sql, $this);
+    if ($res === false) {
+      return false;
+    } else if ($this->id === null) {
+      $this->id = $res;
+    }
+
+    return true;
+  }
+
+  public function delete(SQL $sql): bool {
+    $handler = self::getHandler();
+    if ($this->id === null) {
+      $className = $handler->getReflection()->getName();
+      (new Logger("DatabaseEntity", $sql))->error("Cannot delete entity of class '$className' without id");
+      return false;
+    }
+
+    return $handler->delete($sql, $this->id);
+  }
+
+  public static function getHandler($obj_or_class = null): DatabaseEntityHandler {
+
+    if (!$obj_or_class) {
+      $obj_or_class = get_called_class();
+    }
+
+    if (!($obj_or_class instanceof \ReflectionClass)) {
+      $class = new \ReflectionClass($obj_or_class);
+    } else {
+      $class = $obj_or_class;
+    }
+
+    $handler = self::$handlers[$class->getShortName()] ?? null;
+    if (!$handler) {
+      $handler = new DatabaseEntityHandler($class);
+      self::$handlers[$class->getShortName()] = $handler;
+    }
+
+    return $handler;
+  }
+
+  public function getId(): ?int {
+    return $this->id;
+  }
+}