[FINNA-3637] Add new function creeateComponentPartEntry

src/RecordManager/Base/Record/AbstractRecord.php

@@ -596,4 +596,17 @@ protected function validateDate($dateString)
         }
         return '';
     }
+
+    /**
+     * Create data from values obtained from a component part.
+     * Each record format handles component parts differently.
+     *
+     * @param array $data Component part data
+     *
+     * @return array Array containing values to merge
+     */
+    protected function createComponentPartEntry(array $data): array
+    {
+        return [];
+    }
 }

src/RecordManager/Base/Record/Marc.php

@@ -1692,6 +1692,34 @@ protected function getBuildingFieldSpec(): array
         return $buildingFields;
     }
 
+    /**
+     * Create data from a component values.
+     * Returns component part as a field for Marc.
+     *
+     * @param array $data Component part data
+     *
+     * @return array Array containing values to merge
+     */
+    protected function createComponentPartEntry(array $data): array
+    {
+        $newField = [
+            'subfields' => [
+                ['a' => $data['_id']],
+            ],
+        ];
+        if ($data['title']) {
+            $newField['subfields'][] = ['b' => $data['title']];
+        }
+        if ($data['authors']) {
+            $newField['subfields'][] = ['c' => array_shift($data['authors'])];
+            foreach ($data['authors'] as $author) {
+                $newField['subfields'][] = ['d' => $author];
+            }
+        }
+
+        return $newField;
+    }
+
     /**
      * Get alternate titles
      *