X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=classes%2FManaged_DataObject.php;h=a69a957bcc0225bad8b4085312b1b73a53b9ea13;hb=c00b2ecc4b34c00c4a0cdd092c9346611d9157c0;hp=b324984b7f8e7512d4c8b77606654ca6b10b8ae2;hpb=45dc76de268f708bc7bf4e8bd1c6b1f2fd5eb033;p=quix0rs-gnu-social.git

diff --git a/classes/Managed_DataObject.php b/classes/Managed_DataObject.php
index b324984b7f..a69a957bcc 100644
--- a/classes/Managed_DataObject.php
+++ b/classes/Managed_DataObject.php
@@ -64,6 +64,11 @@ abstract class Managed_DataObject extends Memcached_DataObject
         return parent::pkeyGetClass(get_called_class(), $kv);
     }
 
+    static function pkeyCols()
+    {
+        return parent::pkeyColsClass(get_called_class());
+    }
+
     /**
      * Get multiple items from the database by key
      *
@@ -304,6 +309,53 @@ abstract class Managed_DataObject extends Memcached_DataObject
         return common_database_tablename($this->tableName());
     }
 
+    /**
+     * Returns an object by looking at the primary key column(s).
+     *
+     * Will require all primary key columns to be defined in an associative array
+     * and ignore any keys which are not part of the primary key.
+     *
+     * Will NOT accept NULL values as part of primary key.
+     *
+     * @param   array   $vals       Must match all primary key columns for the dataobject.
+     *
+     * @return  Managed_DataObject  of the get_called_class() type
+     * @throws  NoResultException   if no object with that primary key
+     */
+    static function getByPK(array $vals)
+    {
+        $classname = get_called_class();
+
+        $pkey = static::pkeyCols();
+        if (is_null($pkey)) {
+            throw new ServerException("Failed to get primary key columns for class '{$classname}'");
+        }
+
+        $object = new $classname();
+        foreach ($pkey as $col) {
+            if (!array_key_exists($col, $vals)) {
+                throw new ServerException("Missing primary key column '{$col}'");
+            } elseif (is_null($vals[$col])) {
+                throw new ServerException("NULL values not allowed in getByPK for column '{$col}'");
+            }
+            $object->$col = $vals[$col];
+        }
+        if (!$object->find(true)) {
+            throw new NoResultException($object);
+        }
+        return $object;
+    }
+
+    static function getByID($id)
+    {
+        if (empty($id)) {
+            throw new ServerException('Empty ID on lookup');
+        }
+        // getByPK throws exception if id is null
+        // or if the class does not have a single 'id' column as primary key
+        return static::getByPK(array('id' => $id));
+    }
+
     /**
      * Returns an ID, checked that it is set and reasonably valid
      *