我有三个jpa实体，我正在努力合作 . BoxProfile，BoxProfileItemAssignment和BoxItem所有代码如下所列 . BoxProfileItemAssignment使用@MapId的@EmbeddedId来映射复合键 .
BoxProfile有一组BoxProfileItemAssignments，赋值是BoxItem和Quantity值 . 我希望能够在持久化新的BoxProfile的同时保留BoxProfileItemAssignments . BoxProfileItemAssignments中的每个BoxItem在创建BoxProfile时已经被保留 .
我正在使用spring数据JpaRepository接口来保存我的BoxProfile实体并通过服务层BoxProfileService访问repo .
当我尝试持久化一个新的BoxProfile实体时，由于分离的实体，我得到一个PersistenceException . 我理解嵌套在我传入的BoxProfileItemAssignment实体中的BoxItem是分离的，但我不打算对所述实体进行更改或更新，我只想使用它创建BoxProfileItemAssignment条目 .
经过大量研究后，我似乎无法找到一个嵌套复合键实体持久化的示例，该实体本身具有嵌套实体 .
如果有人能告诉我正确的注释组合是什么来实现我的目标，我将不胜感激 .
javax.persistence.PersistenceException：org.hibernate.PersistentObjectException：独立实体被persist：com.quadrimular.fyfe.fulfillment.domain.BoxItem在org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert（AbstractEntityManagerImpl.java:1763）在org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert（AbstractEntityManagerImpl.java:1677）在org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert（AbstractEntityManagerImpl.java:1683）在org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist（ AbstractEntityManagerImpl.java:1187）sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:57）at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）at java位于com.sun.proxy的.org.springframework.orm.jpa.SharedEntityManagerCreator $ SharedEntityManagerInvocationHandler.invoke（SharedEntityManagerCreator.java:291）的.lang.reflect.Method.invoke（Method.java:606） . $ Proxy53 . 坚持（来源不明）在org.springframework.data.jpa.repository.support.SimpleJpaRepository.save（SimpleJpaRepository.java:394）在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）在sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl .java：57）在org.springframework.data.repository.core.support的java.lang.reflect.Method.invoke（Method.java:606）的sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43） . RepositoryFactorySupport $ QueryExecutorMethodInterceptor.executeMethodOn（RepositoryFactorySupport.java:442）位于org.springframework.data.repository.core.support的org.springframework.data.repository.core.support.RepositoryFactorySupport $ QueryExecutorMethodInterceptor.doInvoke（RepositoryFactorySupport.java:427） . RepositoryFactorySupport $ QueryExecutorMethodInterceptor.invoke（RepositoryFactorySupport.java:381）在org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:179）在org.springfr amework.transaction.interceptor.TransactionInterceptor $ 1.proceedWithInvocation（TransactionInterceptor.java:99）在org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction（TransactionAspectSupport.java:267）在org.springframework.transaction.interceptor.TransactionInterceptor.invoke（TransactionInterceptor的.java：96）在org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:179）在org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke（PersistenceExceptionTranslationInterceptor.java:136）在org.springframework.aop . 在 . org.springframework.aop.framework.ReflectiveMethodInvocation.proceed的org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor $ CrudMethodMetadataPopulatingMethodIntercceptor.invoke（CrudMethodMetadataPostProcessor.java:122）中的framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:179） ReflectiveMethodInvocation.java:179）atOrg.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke（ExposeInvocationInterceptor.java:92）org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:179）org.springframework.aop.framework.JdkDynamicAopProxy.invoke（ JdkDynamicAopProxy.java:207）at com.sun.proxy . $ Proxy65.save（未知来源）at com.quadrimular.fyfe.fulfillment.service.BoxProfileServiceImpl.addBoxProfile（BoxProfileServiceImpl.java:48）at sun.reflect.NativeMethodAccessorImpl.invoke0 （本机方法）在sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:57）在sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:606 ）在org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection（AopUtils.java:317）在org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint（ReflectiveMethodInvocation.java:190）在org.springframework.aop.framework . RefoMethodInvocation.proceed（ReflectiveMethodInvocation.java:157）org.springframework.transaction.interceptor.TransactionInterceptor $ 1.proceedWithInvocation（TransactionInterceptor.java:99）org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction（TransactionAspectSupport.java:267）at at org.springframework.transaction.interceptor.TransactionInterceptor.invoke（TransactionInterceptor.java:96）在org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:179）在org.springframework.aop.framework.JdkDynamicAopProxy.invoke（ JdkDynamicAopProxy.java:207）com.sun.proxy . $ Proxy66.addBoxProfile（未知来源）at com.quadrimular.fyfe.fulfillment.integration.ITBoxProfile.addBoxProfileDatabase（ITBoxProfile.java:96）at sun.reflect.NativeMethodAccessorImpl.invoke0 （本地方法）at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:57）at sun.reflect.DelegatingMethodAccessorImpl.invoke（Deleg atingMethodAccessorImpl.java:43）在org.junit.internal的org.junit.runners.model.FrameworkMethod $ 1.runReflectiveCall（FrameworkMethod.java:47）的java.lang.reflect.Method.invoke（Method.java:606） . runners.model.ReflectiveCallable.run（ReflectiveCallable.java:12）org.junit.runners.model.FrameworkMethod.invokeExplosively（FrameworkMethod.java:44）org.junit.internal.runners.statements.InvokeMethod.evaluate（InvokeMethod . java：17）org.junit.internal.runners.statements.RunBefores.evaluate（RunBefores.java:26）org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate（RunBeforeTestMethodCallbacks.java:73）at org .springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate（RunAfterTestMethodCallbacks.java:82）在org.springframework.test.context.junit4.statements.SpringRepeat.evaluate（SpringRepeat.java:73）在org.junit.runners .parentRunner.runLeaf（ParentRunner.java:271）位于org.springframework.test.context.junit4.SpringJUnit4ClassRunner . runChild（SpringJUnit4ClassRunner.java:217）在org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild（SpringJUnit4ClassRunner.java:83）在org.junit.runners.ParentRunner $ 3.run（ParentRunner.java:238）的组织 . junit.runners.ParentRunner $ 1.schedule（ParentRunner.java:63）org.junit.runners.ParentRunner.runChildren（ParentRunner.java:236）org.junit.runners.ParentRunner.access $ 000（ParentRunner.java:53）在在org.springframework.test.context org.junit.runners.ParentRunner $ 2.evaluate（ParentRunner.java:229）在org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate（RunBeforeTestClassCallbacks.java:61） . 在org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run（SpringJUnit4ClassRunner.java）的org.junit.runners.ParentRunner.run（ParentRunner.java：309）中的junit4.statements.RunAfterTestClassCallbacks.evaluate（RunAfterTestClassCallbacks.java:68）： 163）at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run（JUnit4TestReference.java:50）在org.eclipse上的org.eclipse.jdt.internal.junit.runner.TestExecution.run（TestExecution.java:38）org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:467）位于org.eclipse.jdt.internal的org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run（RemoteTestRunner.java:390）的.jdt.internal.junit.runner.RemoteTestRunner.runTests（RemoteTestRunner.java:683） .junit.runner.RemoteTestRunner.main（RemoteTestRunner.java:197）引起：org.hibernate.PersistentObjectException：传递给persist的分离实体：com.quadrimular.fyfe.fulfillment.domain.BoxItem位于org.hibernate.internal.SessionImpl的org.hibernate.event.internal.DefaultPersistEventListener.onPersist（DefaultPersistEventListener.java:139）位于org.hibernate.jpa.event.internal.core.JpaPersistEventListener $ 1.cascade（JpaPersistEventListener.java:97）的org.hibernate.internal.SessionImpl.persist（SessionImpl.java:794）的.firePersist（SessionImpl.java:801） at org.hibernate.engine.CrossE.occade的org.hibernate.engine.Cascade.cascade上的org.hibernate.engine.Cascade.cascadeAssociation（Cascade.java：293）中的org.hibernate.engine.internal.Cascade.cascadeToOne（Cascade.java:350） （cascade.java:161）org.hibernate的org.hibernate.event.incade.AbstractSaveEventListener.cascadeBeforeSave（AbstractSaveEventListener.java:432）中的org.hibernate.engine.internal.Cascade.cascade（Cascade.java:118） . event.internal.AbstractSaveEventListener.performSaveOrReplicate（AbstractSaveEventListener.java:265） org.hibernate.event.internal.AbstractSaveEventListener.performSave（AbstractSaveEventListener.java:194）org.hibernate.jpa.event.internal.core上的org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId（AbstractSaveEventListener.java:137）位于org.hibernate.event.Deternal中的org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient（DefaultPersistEventListener.java:206）的.JpaPersistEventListener.saveWithGeneratedId（JpaPersistEventListener.java：206）atP.isterEventListener.onPersist（DefaultPersistEventListener.java:149） org.hibernate.internal.SessionImpl.firePersist（SessionImpl.java:801）org.hibernate.internal.SessionImpl.persist（SessionImpl.java:794）atg.hibernate.jpa.event.internal.core.JpaPersistEventListener $ 1.cascade （jpaPersistEventListener.java:97）位于org.hibernate的org.hibernate.engine.Cascade.cascadeToOne（Cascade.java:350）org.hibernate.engine.internal.Cascade.cascadeAssociation（Cascade.java:293） . engine.internal.Cascad e.cascadeProperty（Cascade.java:161）org.hibernate.engine.internal.Cascade.cascadeCollectionElements（Cascade.java：379）org.hibernate.engine.internal.Cascade.cascadeCollection（Cascade.java:319）at org位于org.hibernate.engine.internal.Cascade.cascade的org.hibernate.engine.internal.Cascade.cascadeProperty（Cascade.java:161）中的.hibernate.engine.internal.Cascade.cascadeAssociation（Cascade.java:296）（Cascade .java：118）atg.hibernate.event.internal.AbstractSaveEventListener.cascadeAfterSave（AbstractSaveEventListener.java:460）org.hibernate.event上的org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate（AbstractSaveEventListener.java:294） . 在org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId（JpaPersistEventListener）的org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId（AbstractSaveEventListener.java:125）中的internal.AbstractSaveEventListener.performSave（AbstractSaveEventListener.java:194） . java：84）在org.hibernate .event.internal.DefaultPersistEventListener.entityIsTransient（DefaultPersistEventListener.java:206）org.hibernate.event.internal.DefaultPersistEventListener.onPersist（DefaultPersistEventListener.java:149）org.hibernate.event.internal.DefaultPersistEventListener.onPersist（DefaultPersistEventListener.java） ：75）atg.hibernate.internal.SessionImpl.firePersist（SessionImpl.java:811）atg.hibernate.internal.SessionImpl.persist（SessionImpl.java:784）org.hibernate.internal.SessionImpl.persist（SessionImpl . java：789）org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist（AbstractEntityManagerImpl.java:1181）... 72更多
BoxProfile test method
@Test
@ExpectedDatabase(value = "boxProfileData-add.xml", assertionMode = DatabaseAssertionMode.NON_STRICT)
public void addBoxProfileDatabase() throws Exception {
BoxProfileItemAssignment itemAssignment = new BoxProfileItemAssignment.Builder(BOX_ITEM_ONE, new BigDecimal("2.88")).build();
BoxProfile original = new BoxProfile.Builder("example 3").itemAssignments((new HashSet(Arrays.asList(itemAssignment)))).sizes(new HashSet(Arrays.asList(BOX_SIZE))).selected(true).sequencer(3).build();
BoxProfile returned = boxProfileService.addBoxProfile(original);
assertNotNull(returned);
assertThat(returned.getId(), instanceOf(Long.class));
assertNotNull(returned.getId());
}
BoxProfileRepository.java
public interface BoxProfileRepository extends JpaRepository<BoxProfile, Long> {
}
BoxProfileServiceImpl.java
@Service
@Transactional("mainTransactionManager")
public class BoxProfileServiceImpl implements BoxProfileService {
private static final Logger LOG = LoggerFactory
.getLogger(BoxProfileServiceImpl.class);
private BoxProfileRepository repo;
private BoxItemService boxItemService;
@Autowired
public BoxProfileServiceImpl(BoxProfileRepository repo, BoxItemService boxItemService) {
this.repo = repo;
this.boxItemService = boxItemService;
}
@Transactional("mainTransactionManager")
public BoxProfile addBoxProfile(BoxProfile boxProfile) {
LOG.debug("Adding boxProfile with information: " + boxProfile);
BoxProfile toReturn = repo.save(boxProfile);
LOG.debug("BoxProfile id: " + toReturn);
return toReturn;
}
}
BoxProfile.java
@Entity
@Table
public class BoxProfile implements Serializable {
private static final long serialVersionUID = 9091824819977165224L;
@Id
@GeneratedValue
private Long id;
private String description;
private boolean selected;
private int sequencer;
@ManyToMany(fetch = FetchType.EAGER)
@JoinTable(name = "boxProfileSizes", joinColumns = { @JoinColumn(name = "BOX_PROFILE_ID", referencedColumnName = "id") }, inverseJoinColumns = { @JoinColumn(name = "SIZE_ID", referencedColumnName = "id") })
private Set<BoxSize> sizes;
@OneToMany(mappedBy = "boxProfile", cascade={CascadeType.PERSIST, CascadeType.REMOVE}, fetch = FetchType.EAGER)
private Set<BoxProfileItemAssignment> itemAssignments;
// Modification times
private Date creationTime;
private Date modificationTime;
@PreUpdate
public void preUpdate() {
setModificationTime(new Date());
}
@PrePersist
public void prePersist() {
Date now = new Date();
setCreationTime(now);
setModificationTime(now);
}
public BoxProfile() {
}
private BoxProfile(Builder b) {
this.description = b.description;
this.id = b.id;
this.selected = b.selected;
this.sequencer = b.sequencer;
this.sizes = b.sizes;
}
public static class Builder {
// Mandatory Fields
private final String description;
// Optional Fields
private Long id = null;
private boolean selected = false;
private int sequencer = -1;
private Set<BoxSize> sizes = new HashSet<BoxSize>();
private Set<BoxProfileItemAssignment> itemAssignments = new HashSet<BoxProfileItemAssignment>();
public Builder(String description) {
this.description = description;
}
public Builder sequencer(int sequencer) {
this.sequencer = sequencer;
return this;
}
public Builder sizes(Set<BoxSize> sizes) {
this.sizes = sizes;
return this;
}
public Builder addSize(BoxSize size) {
this.sizes.add(size);
return this;
}
public Builder itemAssignments(
Set<BoxProfileItemAssignment> itemAssignments) {
this.itemAssignments = itemAssignments;
return this;
}
public Builder id(Long id) {
this.id = id;
return this;
}
public Builder selected(boolean selected) {
this.selected = selected;
return this;
}
public BoxProfile build() {
BoxProfile boxProfile = new BoxProfile(this);
// Add the new box profile to the box profile assigned fish.
for (BoxProfileItemAssignment assignment : itemAssignments) {
assignment.setBoxProfile(boxProfile);
}
// Set the updated fish assignments on the box profile
boxProfile.setItemAssignements(itemAssignments);
return boxProfile;
}
}
// Getters setters hashcode equals to string
}
BoxProfileItemAssignment.java
@Entity
@Table(name = "BOX_PROFILE_ITEM")
public class BoxProfileItemAssignment implements Serializable{
private static final long serialVersionUID = 3331165661732043732L;
@EmbeddedId
private BoxProfileItemAssignmentId id = new BoxProfileItemAssignmentId();
@MapsId("boxProfileId")
@ManyToOne(fetch=FetchType.LAZY)
@JoinColumn(name = "BOX_PROFILE_ID", referencedColumnName = "id")
private BoxProfile boxProfile;
@MapsId("itemId")
@ManyToOne(fetch = FetchType.EAGER)
@JoinColumn(name = "ITEM_ID", referencedColumnName = "id")
private BoxItem item;
private BigDecimal quantity;
// Modification times
private Date creationTime;
private Date modificationTime;
@PreUpdate
public void preUpdate() {
setModificationTime(new Date());
}
@PrePersist
public void prePersist() {
Date now = new Date();
setCreationTime(now);
setModificationTime(now);
}
private BoxProfileItemAssignment(Builder b){
this.boxProfile = b.boxProfile;
this.item = b.item;
this.quantity = b.quantity;
this.id = b.id;
}
public BoxProfileItemAssignment(){}
public static class Builder {
private final BoxItem item;
private final BigDecimal quantity;
private BoxProfile boxProfile;
private BoxProfileItemAssignmentId id = new BoxProfileItemAssignmentId();
public Builder(BoxItem item, BigDecimal quantity){
this.item = item;
this.quantity = quantity;
}
public Builder boxProfile(BoxProfile boxProfile){
this.boxProfile = boxProfile;
return this;
}
public Builder id(BoxProfileItemAssignmentId id){
this.id = id;
return this;
}
public BoxProfileItemAssignment build(){
return new BoxProfileItemAssignment(this);
}
}
// Getters setters hashcode equals to string
}
BoxProfileItemAssignmentId
@Embeddable
public class BoxProfileItemAssignmentId implements Serializable{
private static final long serialVersionUID = -7936926474216068447L;
@Column(name = "BOX_PROFILE_ID")
private Long boxProfileId;
@Column(name = "ITEM_ID")
private Long itemId;
public BoxProfileItemAssignmentId(){}
private BoxProfileItemAssignmentId(Builder b){
this.boxProfileId = b.boxProfileId;
this.itemId = b.itemId;
}
public static class Builder{
private final Long boxProfileId;
private final Long itemId;
public Builder(Long boxProfileId, Long itemId){
this.boxProfileId = boxProfileId;
this.itemId = itemId;
}
public BoxProfileItemAssignmentId build(){
return new BoxProfileItemAssignmentId(this);
}
}
// Getters setters hashcode equals to string
}
BoxItem.java
@Entity
@Table
public class BoxItem implements Serializable {
private static final long serialVersionUID = -6146188094809573420L;
@Id
@GeneratedValue
private Long id;
@NotNull
private BoxItemType type;
@NotNull
private MeasurementUnit unit;
@NotNull
@Size(min=2, max=30)
private String name;
@NotNull
private BigDecimal costPerUnit;
// Modification times
private Date creationTime;
private Date modificationTime;
@PreUpdate
public void preUpdate() {
modificationTime = new Date();
}
@PrePersist
public void prePersist() {
Date now = new Date();
creationTime = now;
modificationTime = now;
}
public BoxItem(){}
private BoxItem(Builder b){
this.type = b.type;
this.name = b.name;
this.costPerUnit = b.costPerUnit;
this.id = b.id;
this.unit = b.unit;
}
public static class Builder{
private BoxItemType type;
private MeasurementUnit unit;
private String name;
private BigDecimal costPerUnit;
private Long id;
public Builder(String name, BoxItemType type, MeasurementUnit unit, BigDecimal costPerUnit){
this.name = name;
this.type = type;
this.unit = unit;
this.costPerUnit = costPerUnit;
}
public Builder id(Long id){
this.id = id;
return this;
}
public BoxItem build(){
return new BoxItem(this);
}
}
// Getters setters hashcode equals to string
}
1 回答
问题不是由您的映射引起的，而是由您处理“现有”实体的方式引起的 .
正如您所说BOX_ITEM_ONE已经存在，但您在测试方法中使用的EntityManger不知道 .
在您的情况下，您可能在testsetup期间持久化了BOX_ITEM_ONE，或者您使用find获取了它但使用了与测试方法不同的EnittyManager，因此该对象对您的EnityManger仍然是“新的”，但至少EM认识到它是JPA管理的实体，所以你得到了超然的例外 .
如果您使用DB中存在的id和属性“手动”创建BOX_ITEM_ONE，则会出现错误'无法使用相同的主键进行INSERT（或沿着那些主键）lines'），因为EM会尝试持久保存'new object'，但已经设置了PrimaryKey .
简单地说，您需要通过将其添加到EM上下文来使EM知道BoxItem . 这是合并方法，您只需调用BOX_ITME_ONE = EM.merge（BOX_ITEM_ONE），然后将其添加到新的BoxProfile中 . 或者更好的是，如果在更新BoxItem的同时防止“对象已更改异常”，则使用当前的EM找到对象，BOX_ITEM_ONE = em.find（BobItem.class，BOX_ITEM_ONE.getID（）） . 它不会发出新的sql语句，它只会从JPA上下文中获取对象，因此它不是性能问题 .
最后，您可能希望在BoxProfile中的itemAssignments上添加orphanRemoval = true到您的OneToMany anotation，因为如果您从集合中删除它们可能会删除ItemsAssignments，因为它们本身没有意义 .