Add exception mode to redirect from object-tag relation type to

object-event relation (generic, e.g. if the tag is actually a time)

exceptions/MDImporterTagRelationTypeIsEventType.php

@@ -0,0 +1,9 @@
+<?PHP
+declare(strict_types = 1);
+
+/**
+ * Exception thrown in case a name entered for the relation between tag
+ * and object is actually an event type.
+ */
+final class MDImporterTagRelationTypeIsEventType extends Exception {
+}

src/MDConcObjectTagRelTypes.php

@@ -23,6 +23,8 @@ final class MDConcObjectTagRelTypes implements MDImporterConcordanceListInterfac
         'description' => 'tag',
         'emotion' => 'tag',
         'atmosphäre' => 'tag',
+        'schlagwort hist.ereignis' => 'tag',
+        'schlagwort thema' => 'tag',
 
         "motive" => "display_subject",
         "motiv" => "display_subject",
@@ -36,6 +38,31 @@ final class MDConcObjectTagRelTypes implements MDImporterConcordanceListInterfac
 
     ];
 
+    // Maps to event type
+    private const RELATION_TYPES_MAPPED_TO_EVENTS = [
+        '\'datierung\'' => ['event_type' => 24, 'target_section' => 'time'],
+        'datierung' => ['event_type' => 24, 'target_section' => 'time'],
+        'schlagwort zeitraum' => ['event_type' => 24, 'target_section' => 'time'],
+    ];
+
+    /**
+     * Returns the mapped event type and event type target
+     * of a supposed tag-object relationship name.
+     *
+     * @param string $input Input string (relation type name).
+     *
+     * @return array{event_type: int, target_section: 'time'|'actor'|'place'}
+     */
+    public static function getMappedEventType(string $input):array {
+
+        if (isset(self::RELATION_TYPES_MAPPED_TO_EVENTS[strtolower($input)])) {
+            return self::RELATION_TYPES_MAPPED_TO_EVENTS[strtolower($input)];
+        }
+
+        throw new MDImporterMissingConcordance("Unknown object-tag relationship type: " . $input);
+
+    }
+
     /**
      * Require a function for getting the concordance target.
      *
@@ -52,6 +79,10 @@ final class MDConcObjectTagRelTypes implements MDImporterConcordanceListInterfac
             return self::RELATION_TYPE_NAMES[strtolower($input)];
         }
 
+        if (isset(self::RELATION_TYPES_MAPPED_TO_EVENTS[strtolower($input)])) {
+            throw new MDImporterTagRelationTypeIsEventType("Tag-object relationship type is signifies not tags, but an event component.");
+        }
+
         throw new MDImporterMissingConcordance("Unknown object-tag relationship type: " . $input);
 
     }