DATAJDBC-276 - Id are no longer required for elements of Lists.

Author: schauder

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/core/AggregateTemplateIntegrationTests.java

@@ -39,6 +39,9 @@
 import org.springframework.test.context.junit4.rules.SpringMethodRule;
 import org.springframework.transaction.annotation.Transactional;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * Integration tests for {@link JdbcAggregateTemplate}.
  *
@@ -217,7 +220,7 @@ public void oneToOneChildWithoutId() {
 OneToOneParent parent = new OneToOneParent();
 
 parent.content = "parent content";
-parent.child = new OneToOneChildNoId();
+parent.child = new ChildNoId();
 parent.child.content = "child content";
 
 template.save(parent);
@@ -248,7 +251,7 @@ public void oneToOneNullAttributes() {
 OneToOneParent parent = new OneToOneParent();
 
 parent.content = "parent content";
-parent.child = new OneToOneChildNoId();
+parent.child = new ChildNoId();
 
 template.save(parent);
 
@@ -289,6 +292,23 @@ public void saveAndLoadAnEntityWithSecondaryReferenceNotNull() {
 
 softly.assertAll();
 }
+@Test // DATAJDBC-276
+public void saveAndLoadAnEntityWithListOfElementsWithoutId() {
+
+ListParent entity = new ListParent();
+entity.name = "name";
+
+ElementNoId element = new ElementNoId();
+element.content = "content";
+
+entity.content.add(element);
+
+template.save(entity);
+
+ListParent reloaded = template.findById(entity.id, ListParent.class);
+
+assertThat(reloaded.content).extracting(e -> e.content).containsExactly("content");
+}
 
 private static LegoSet createLegoSet() {
 
@@ -326,13 +346,25 @@ static class OneToOneParent {
 @Id private Long id;
 private String content;
 
-private OneToOneChildNoId child;
+private ChildNoId child;
 }
 
-static class OneToOneChildNoId {
+static class ChildNoId {
 private String content;
 }
 
+static class ListParent {
+
+@Id private Long id;
+String name;
+List<ElementNoId> content = new ArrayList<>();
+}
+
+static class ElementNoId {
+private String content;
+}
+
+
 @Configuration
 @Import(TestConfiguration.class)
 static class Config {

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/core/SqlGeneratorUnitTests.java

@@ -139,7 +139,7 @@ public void deleteMapByPath() {
 @Test // DATAJDBC-131
 public void findAllByProperty() {
 
-// this would get called when DummyEntity is the element type of a Set
+// this would get called when ListParent is the element type of a Set
 String sql = sqlGenerator.getFindAllByProperty("back-ref", null, false);
 
 assertThat(sql).isEqualTo("SELECT dummy_entity.x_id AS x_id, dummy_entity.x_name AS x_name, " //
@@ -152,7 +152,7 @@ public void findAllByProperty() {
 @Test // DATAJDBC-131
 public void findAllByPropertyWithKey() {
 
-// this would get called when DummyEntity is th element type of a Map
+// this would get called when ListParent is th element type of a Map
 String sql = sqlGenerator.getFindAllByProperty("back-ref", "key-column", false);
 
 assertThat(sql).isEqualTo("SELECT dummy_entity.x_id AS x_id, dummy_entity.x_name AS x_name, " //
@@ -171,7 +171,7 @@ public void findAllByPropertyOrderedWithoutKey() {
 @Test // DATAJDBC-131
 public void findAllByPropertyWithKeyOrdered() {
 
-// this would get called when DummyEntity is th element type of a Map
+// this would get called when ListParent is th element type of a Map
 String sql = sqlGenerator.getFindAllByProperty("back-ref", "key-column", true);
 
 assertThat(sql).isEqualTo("SELECT dummy_entity.x_id AS x_id, dummy_entity.x_name AS x_name, " //

spring-data-jdbc/src/test/resources/org.springframework.data.jdbc.core/AggregateTemplateIntegrationTests-hsql.sql

@@ -5,4 +5,7 @@ ALTER TABLE MANUAL ADD FOREIGN KEY (LEGO_SET)
 REFERENCES LEGO_SET(id);
 
 CREATE TABLE ONE_TO_ONE_PARENT ( id BIGINT GENERATED BY DEFAULT AS IDENTITY(START WITH 1) PRIMARY KEY, content VARCHAR(30));
-CREATE TABLE One_To_One_Child_No_Id (ONE_TO_ONE_PARENT INTEGER PRIMARY KEY, content VARCHAR(30));
+CREATE TABLE Child_No_Id (ONE_TO_ONE_PARENT INTEGER PRIMARY KEY, content VARCHAR(30));
+
+CREATE TABLE LIST_PARENT ( id BIGINT GENERATED BY DEFAULT AS IDENTITY ( START WITH 1 ) PRIMARY KEY, NAME VARCHAR(100));
+CREATE TABLE element_no_id ( content VARCHAR(100), LIST_PARENT_key BIGINT, LIST_PARENT BIGINT);

spring-data-jdbc/src/test/resources/org.springframework.data.jdbc.core/AggregateTemplateIntegrationTests-mariadb.sql

@@ -5,4 +5,7 @@ ALTER TABLE MANUAL ADD FOREIGN KEY (LEGO_SET)
 REFERENCES LEGO_SET(id);
 
 CREATE TABLE ONE_TO_ONE_PARENT ( id BIGINT AUTO_INCREMENT PRIMARY KEY, content VARCHAR(30));
-CREATE TABLE One_To_One_Child_No_Id (ONE_TO_ONE_PARENT INTEGER PRIMARY KEY, content VARCHAR(30));
+CREATE TABLE Child_No_Id (ONE_TO_ONE_PARENT INTEGER PRIMARY KEY, content VARCHAR(30));
+
+CREATE TABLE LIST_PARENT ( id BIGINT AUTO_INCREMENT PRIMARY KEY, NAME VARCHAR(100));
+CREATE TABLE element_no_id ( content VARCHAR(100), LIST_PARENT_key BIGINT, LIST_PARENT BIGINT);

spring-data-jdbc/src/test/resources/org.springframework.data.jdbc.core/AggregateTemplateIntegrationTests-mysql.sql

@@ -5,4 +5,7 @@ ALTER TABLE MANUAL ADD FOREIGN KEY (LEGO_SET)
 REFERENCES LEGO_SET(id);
 
 CREATE TABLE ONE_TO_ONE_PARENT ( id BIGINT AUTO_INCREMENT PRIMARY KEY, content VARCHAR(30));
-CREATE TABLE One_To_One_Child_No_Id (ONE_TO_ONE_PARENT INTEGER PRIMARY KEY, content VARCHAR(30));
+CREATE TABLE Child_No_Id (ONE_TO_ONE_PARENT INTEGER PRIMARY KEY, content VARCHAR(30));
+
+CREATE TABLE LIST_PARENT ( id BIGINT AUTO_INCREMENT PRIMARY KEY, NAME VARCHAR(100));
+CREATE TABLE element_no_id ( content VARCHAR(100), LIST_PARENT_key BIGINT, LIST_PARENT BIGINT);

spring-data-jdbc/src/test/resources/org.springframework.data.jdbc.core/AggregateTemplateIntegrationTests-postgres.sql

@@ -8,4 +8,7 @@ ALTER TABLE MANUAL ADD FOREIGN KEY (LEGO_SET)
 REFERENCES LEGO_SET(id);
 
 CREATE TABLE ONE_TO_ONE_PARENT ( id SERIAL PRIMARY KEY, content VARCHAR(30));
-CREATE TABLE One_To_One_Child_No_Id (ONE_TO_ONE_PARENT INTEGER PRIMARY KEY, content VARCHAR(30));
+CREATE TABLE Child_No_Id (ONE_TO_ONE_PARENT INTEGER PRIMARY KEY, content VARCHAR(30));
+
+CREATE TABLE LIST_PARENT ( id SERIAL PRIMARY KEY, NAME VARCHAR(100));
+CREATE TABLE element_no_id ( content VARCHAR(100), LIST_PARENT_key BIGINT, LIST_PARENT INTEGER);

spring-data-relational/src/main/java/org/springframework/data/relational/core/conversion/AggregateChange.java

@@ -107,14 +107,6 @@ static void setId(RelationalMappingContext context, RelationalConverter converte
 
 PersistentPropertyPath<RelationalPersistentProperty> propertyPathToEntity = action.getPropertyPath();
 
-RelationalPersistentProperty requiredIdProperty = context
-.getRequiredPersistentEntity(propertyPathToEntity.getRequiredLeafProperty().getActualType())
-.getRequiredIdProperty();
-
-PersistentPropertyPath<RelationalPersistentProperty> pathToId = context.getPersistentPropertyPath(
-propertyPathToEntity.toDotPath() + '.' + requiredIdProperty.getName(),
-propertyPathToEntity.getBaseProperty().getOwner().getType());
-
 RelationalPersistentProperty leafProperty = propertyPathToEntity.getRequiredLeafProperty();
 
 Object currentPropertyValue = propertyAccessor.getProperty(propertyPathToEntity);
@@ -140,6 +132,15 @@ static void setId(RelationalMappingContext context, RelationalConverter converte
 throw new IllegalStateException("Can't handle " + currentPropertyValue);
 }
 } else {
+
+RelationalPersistentProperty requiredIdProperty = context
+.getRequiredPersistentEntity(propertyPathToEntity.getRequiredLeafProperty().getActualType())
+.getRequiredIdProperty();
+
+PersistentPropertyPath<RelationalPersistentProperty> pathToId = context.getPersistentPropertyPath(
+propertyPathToEntity.toDotPath() + '.' + requiredIdProperty.getName(),
+propertyPathToEntity.getBaseProperty().getOwner().getType());
+
 propertyAccessor.setProperty(pathToId, generatedId);
 }
 }
@@ -191,7 +192,11 @@ private static <T> PersistentPropertyAccessor<T> setId(RelationalConverter conve
 PersistentPropertyAccessor<T> intermediateAccessor = converter.getPropertyAccessor(persistentEntity,
 (T) originalElement);
 
-intermediateAccessor.setProperty(persistentEntity.getRequiredIdProperty(), generatedId);
+RelationalPersistentProperty idProperty = persistentEntity.getIdProperty();
+if (idProperty != null) {
+intermediateAccessor.setProperty(idProperty, generatedId);
+}
+
 return intermediateAccessor;
 }