DATACMNS-1326 - PersistentPropertyInspectingIsNewStrategy now considers primitive type's defaults.

PersistentPropertyInspectingIsNewStrategy now considers entities with primitive default identifier values new.

src/main/java/org/springframework/data/mapping/context/MappingContextIsNewStrategyFactory.java

@@ -85,7 +85,7 @@ public class MappingContextIsNewStrategyFactory extends IsNewStrategyFactorySupp
 		if (entity.hasIdProperty()) {
 
 			return PersistentPropertyInspectingIsNewStrategy.of(entity.getRequiredIdProperty(),
-					MappingContextIsNewStrategyFactory::propertyIsNull);
+					MappingContextIsNewStrategyFactory::propertyIsNullOrZeroNumber);
 		}
 
 		return null;
@@ -116,11 +116,7 @@ public class MappingContextIsNewStrategyFactory extends IsNewStrategyFactorySupp
 		}
 	}
 
-	private static boolean propertyIsNull(Object it) {
-		return it == null;
-	}
-
 	private static boolean propertyIsNullOrZeroNumber(Object value) {
-		return propertyIsNull(value) || value instanceof Number && ((Number) value).longValue() == 0;
+		return value == null || value instanceof Number && ((Number) value).longValue() == 0;
 	}
 }

src/test/java/org/springframework/data/mapping/context/MappingContextIsNewStrategyFactoryUnitTests.java

@@ -42,7 +42,8 @@ public class MappingContextIsNewStrategyFactoryUnitTests {
 	public void setUp() {
 
 		SampleMappingContext context = new SampleMappingContext();
-		context.setInitialEntitySet(new HashSet<>(Arrays.asList(Entity.class, VersionedEntity.class)));
+		context.setInitialEntitySet(
+				new HashSet<>(Arrays.asList(Entity.class, VersionedEntity.class, PrimitiveIdEntity.class)));
 		context.afterPropertiesSet();
 
 		factory = new MappingContextIsNewStrategyFactory(new PersistentEntities(Collections.singleton(context)));
@@ -93,6 +94,18 @@ public class MappingContextIsNewStrategyFactoryUnitTests {
 		assertThat(strategy.isNew(entity)).isFalse();
 	}
 
+	@Test // DATACMNS-1326
+	public void entityWithPrimitiveDefaultIsNotConsideredNew() {
+
+		IsNewStrategy strategy = factory.getIsNewStrategy(PrimitiveIdEntity.class);
+
+		PrimitiveIdEntity entity = new PrimitiveIdEntity();
+		assertThat(strategy.isNew(entity)).isTrue();
+
+		entity.id = 1L;
+		assertThat(strategy.isNew(entity)).isFalse();
+	}
+
 	@SuppressWarnings("serial")
 	static class PersistableEntity implements Persistable<Long> {
 
@@ -118,7 +131,7 @@ public class MappingContextIsNewStrategyFactoryUnitTests {
 		@Id Long id;
 	}
 
-	static class PrimitveVersionedEntity {
+	static class PrimitiveVersionedEntity {
 
 		@Version long version = 0;
 
@@ -129,4 +142,8 @@ public class MappingContextIsNewStrategyFactoryUnitTests {
 
 		@Id Long id;
 	}
+
+	static class PrimitiveIdEntity {
+		@Id long id;
+	}
 }