Replace DiscriminatorMapMetadata::getField() to property

Author: SerafimArts

src/Mapping/Metadata/DiscriminatorMapMetadata.php

@@ -15,9 +15,11 @@ final class DiscriminatorMapMetadata extends Metadata
 {
     public function __construct(
         /**
+         * Gets discriminator field name.
+         *
          * @var non-empty-string
          */
-        private readonly string $field,
+        public readonly string $field,
         /**
          * @var array<non-empty-string, TypeMetadata>
          */
@@ -73,18 +75,6 @@ public function getMapping(): array
         return $this->map;
     }
 
-    /**
-     * Returns discriminator field name.
-     *
-     * @api
-     *
-     * @return non-empty-string
-     */
-    public function getField(): string
-    {
-        return $this->field;
-    }
-
     /**
      * Returns default mapping type for transformations that do not comply
      * with the specified mapping rules defined in {@see getMapping()}.

src/Type/ClassType/ClassTypeDenormalizer.php

@@ -136,7 +136,7 @@ private function castOverDiscriminator(DiscriminatorMapMetadata $map, array $val
         $default = $map->getDefaultType()
             ?->type;
 
-        $field = $map->getField();
+        $field = $map->field;
 
         // In case of discriminator field is missing
         if (!\array_key_exists($field, $value)) {

tests/Mapping/Metadata/DiscriminatorMapMetadataTest.php

@@ -16,7 +16,7 @@ final class DiscriminatorMapMetadataTest extends MetadataTestCase
     public function testBasics(): void
     {
         $m = new DiscriminatorMapMetadata('kind');
-        self::assertSame('kind', $m->getField());
+        self::assertSame('kind', $m->field);
         self::assertSame([], $m->getMapping());
         self::assertNull($m->getDefaultType());
         self::assertFalse($m->hasType('x'));