Add concordance list for ownership status

src/MDConcOwnershipStatus.php

@@ -0,0 +1,41 @@
+<?PHP
+/**
+ * Constains lists for resolving literal ownership status to the expected names.
+ *
+ * @author Joshua Ramon Enslin <joshua@museum-digital.de>
+ */
+declare(strict_types = 1);
+
+/**
+ * Provides lists for categorizing spelled out ownership status types.
+ */
+final class MDConcOwnershipStatus implements MDImporterConcordanceListInterface {
+
+    private const OWNERSHIP_TYPES_VERBOSE = [
+
+        // 0: No known entry type
+        "Geschenk" => "owned",
+        "Dauerleihgabe" => "permanent_loan",
+        "Kauf" => "owned",
+        "Fund" => "owned",
+        "Eigenleistung" => "owned",
+
+    ];
+
+    /**
+     * Require a function for getting the concordance target.
+     *
+     * @param string $input Input string.
+     *
+     * @return string
+     */
+    public static function getConcordanceTarget(string $input):string {
+
+        if (!isset(self::OWNERSHIP_TYPES_VERBOSE[$input])) {
+            throw new MDImporterMissingConcordance("Unknown ownership type: " . $input);
+        }
+
+        return self::OWNERSHIP_TYPES_VERBOSE[$input];
+
+    }
+}