feat: update metadata at field metadata

Signed-off-by: Otavio Santana <otaviopolianasantana@gmail.com>

jnosql-mapping/jnosql-mapping-reflection/src/test/java/org/eclipse/jnosql/mapping/reflection/DefaultFieldMetadataTest.java

@@ -16,12 +16,14 @@
 
 import org.assertj.core.api.Assertions;
 import jakarta.nosql.AttributeConverter;
+import org.assertj.core.api.SoftAssertions;
 import org.eclipse.jnosql.mapping.metadata.ClassConverter;
 import org.eclipse.jnosql.mapping.metadata.EntityMetadata;
 import org.eclipse.jnosql.mapping.metadata.FieldMetadata;
 import org.eclipse.jnosql.mapping.reflection.entities.Person;
 import org.eclipse.jnosql.mapping.reflection.entities.MoneyConverter;
 import org.eclipse.jnosql.mapping.reflection.entities.Person;
+import org.eclipse.jnosql.mapping.reflection.entities.UDTEntity;
 import org.eclipse.jnosql.mapping.reflection.entities.Worker;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -61,4 +63,33 @@ void shouldCreateNewInstanceConverter(){
         AttributeConverter<Object, Object> result = fieldMetadata.newConverter().orElseThrow();
         assertThat(result).isNotNull().isInstanceOf(MoneyConverter.class);
     }
+
+    @Test
+    void shouldReturnEmptyUDTWithEmptyString() {
+        EntityMetadata entityMetadata = converter.apply(UDTEntity.class);
+        FieldMetadata name = entityMetadata.fieldMapping("empty").orElseThrow();
+        fieldMetadata = (DefaultFieldMetadata) name;
+        assertThat(fieldMetadata.udt()).isEmpty();
+    }
+
+    @Test
+    void shouldReturnEmptyUDTWithBlankString() {
+        EntityMetadata entityMetadata = converter.apply(UDTEntity.class);
+        FieldMetadata name = entityMetadata.fieldMapping("blank").orElseThrow();
+        fieldMetadata = (DefaultFieldMetadata) name;
+        assertThat(fieldMetadata.udt()).isEmpty();
+    }
+
+    @Test
+    void shouldReturnUDT() {
+        EntityMetadata entityMetadata = converter.apply(UDTEntity.class);
+        FieldMetadata name = entityMetadata.fieldMapping("udt").orElseThrow();
+        fieldMetadata = (DefaultFieldMetadata) name;
+
+        SoftAssertions.assertSoftly(soft -> {
+            soft.assertThat(fieldMetadata.udt()).isPresent();
+            soft.assertThat(fieldMetadata.udt().orElseThrow()).isEqualTo("sample");
+        });
+    }
+
 }

jnosql-mapping/jnosql-mapping-reflection/src/test/java/org/eclipse/jnosql/mapping/reflection/entities/UDTEntity.java

@@ -0,0 +1,37 @@
+/*
+ *  Copyright (c) 2024 Contributors to the Eclipse Foundation
+ *   All rights reserved. This program and the accompanying materials
+ *   are made available under the terms of the Eclipse Public License v1.0
+ *   and Apache License v2.0 which accompanies this distribution.
+ *   The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
+ *   and the Apache License v2.0 is available at http://www.opensource.org/licenses/apache2.0.php.
+ *
+ *   You may elect to redistribute this code under either of these licenses.
+ *
+ *   Contributors:
+ *
+ *   Otavio Santana
+ */
+package org.eclipse.jnosql.mapping.reflection.entities;
+
+
+import jakarta.nosql.Column;
+import jakarta.nosql.Entity;
+import jakarta.nosql.Id;
+
+@Entity
+public class UDTEntity {
+
+    @Id
+    private String id;
+
+    @Column(udt = "")
+    private String empty;
+
+    @Column(udt = "   ")
+    private String blank;
+
+
+    @Column(udt = "sample")
+    private String udt;
+}