Merge pull request #146 from domaframework/fix-embeddable-null-handling

Embeddable なオブジェクトが null の場合に更新系の処理が失敗する不具合を修正

Author: nakamura-to

src/main/java/org/seasar/doma/internal/jdbc/entity/PropertyField.java

@@ -81,6 +81,9 @@ public Object getValue(ENTITY entity) {
         AssertionUtil.assertNotNull(entity);
         Object value = entity;
         for (Field field : fields) {
+            if (value == null) {
+                break;
+            }
             value = getFieldValue(field, value);
         }
         return value;

src/test/java/org/seasar/doma/internal/jdbc/entity/PropertyFieldTest.java

@@ -66,6 +66,13 @@ public void testGetValue_nestedPath() throws Exception {
         assertEquals("Tokyo", path.getValue(person));
     }
 
+    public void testGetValue_nestedPath_null() throws Exception {
+        Person person = new Person();
+        PropertyField<Person> path = new PropertyField<>("address.city",
+                Person.class);
+        assertNull(path.getValue(person));
+    }
+
     public void testGetValue_nestedParentPath() throws Exception {
         Person person = new Person();
         person.address = new Address("island", "Tokyo", "Yaesu");