我有两个实体，购买和产品。他们有很多关系：
Purchase >-------purchaseProduct---------< Product
他们之间 我已将这些实体映射到一起。保存或删除购买时一切正常。当我执行更新时，只有父级（购买将更新）和子级（LineCommand）不会被更新（意味着从数据库中删除旧子项并插入新的子级）。
这里是购买和产品及协会的DDL：LineCommand：
购买：
CREATE TABLE purchase
(
idpurchase serial NOT NULL,
code character varying(50),
date timestamp without time zone,
totalht double precision,
tva double precision,
totalttc double precision,
CONSTRAINT purchase_pkey PRIMARY KEY (idpurchase)
)
产品：
CREATE TABLE product (
idProduct serial primary key,
nameAr varchar(50),
nameFr varchar(50),
preference varchar(50),
qtyStart double PRECISION,
qtyInHand double PRECISION,
sellPrice double PRECISION ,
purchasePrice double PRECISION,
taxe double PRECISION
);
LineCommand：
CREATE TABLE purchaseProduct (
idPurchase integer,
idProduct integer,
qty double PRECISION,
price double PRECISION,
primary key(idPurchase,idProduct),
foreign key(idPurchase) references purchase(idPurchase),
foreign key(idProduct) references product(idProduct)
);
上述实体的映射：
@Entity
@Table(name = "purchase")
@Access(AccessType.PROPERTY)
public class Purchase {
private LongProperty idPurchase;
private StringProperty codePurchase;
private ObjectProperty<LocalDate> datePurchase;
private DoubleProperty totalHt;
private DoubleProperty tva;
private DoubleProperty totalTTC;
private Set<LineCommand> lineItems = new HashSet<LineCommand>(0);
public Purchase() {
this.idPurchase = new SimpleLongProperty();
this.codePurchase = new SimpleStringProperty();
this.datePurchase = new SimpleObjectProperty<>();
this.totalHt = new SimpleDoubleProperty();
this.tva = new SimpleDoubleProperty();
this.totalTTC = new SimpleDoubleProperty();
}
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "purchase_seq_gen")
@SequenceGenerator(name = "purchase_seq_gen", sequenceName = "purchase_idpurchase_seq", initialValue = 1, allocationSize = 1)
@Column(name = "idpurchase", unique = true, nullable = false)
public long getIdPurchase() {
return idPurchase.get();
}
public LongProperty idPurchaseProperty() {
return idPurchase;
}
public void setIdPurchase(long idPurchase) {
this.idPurchase.set(idPurchase);
}
@Column(name = "code")
public String getCodePurchase() {
return codePurchase.get();
}
public StringProperty codePurchaseProperty() {
return codePurchase;
}
public void setCodePurchase(String codePurchase) {
this.codePurchase.set(codePurchase);
}
@Column(name = "date")
@Convert(converter = LocalDatePersistanceConverter.class)
public LocalDate getDatePurchase() {
return datePurchase.get();
}
public ObjectProperty<LocalDate> datePurchaseProperty() {
return datePurchase;
}
public void setDatePurchase(LocalDate datePurchase) {
this.datePurchase.set(datePurchase);
}
@Column(name = "totalHt")
public double getTotalHt() {
return totalHt.get();
}
public DoubleProperty totalHtProperty() {
return totalHt;
}
public void setTotalHt(double totalHt) {
this.totalHt.set(totalHt);
}
@Column(name = "tva")
public double getTva() {
return tva.get();
}
public DoubleProperty tvaProperty() {
return tva;
}
public void setTva(double tva) {
this.tva.set(tva);
}
@Column(name = "totalTTC")
public double getTotalTTC() {
return totalTTC.get();
}
public DoubleProperty totalTTCProperty() {
return totalTTC;
}
public void setTotalTTC(double totalTTC) {
this.totalTTC.set(totalTTC);
}
@OneToMany(mappedBy = "primaryKey.purchase", fetch = FetchType.EAGER, cascade = CascadeType.ALL, orphanRemoval = true)
@Fetch(value = FetchMode.SUBSELECT)
public Set<LineCommand> getLineItems() {
return this.lineItems;
}
public void setLineItems(Set<LineCommand> lineItems) {
this.lineItems = lineItems;
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
} else {
if (this.idPurchase.getValue() == ((Purchase) obj).getIdPurchase())
return true;
else
return false;
}
}
}
产品：
@Entity
@Table(name = "Product")
@Access(AccessType.PROPERTY)
public class Product {
private LongProperty idProduct;
private StringProperty nameAr;
private StringProperty nameFr;
private StringProperty preference;
private DoubleProperty qtyStart;
private DoubleProperty qtyInHand;
private DoubleProperty sellPrice;
private DoubleProperty purchasePrice;
private DoubleProperty taxe;
private Set<LineCommand> items = new HashSet<LineCommand>();
public void setIdProduct(long idProduct) {
this.idProduct.set(idProduct);
}
public Product() {
idProduct = new SimpleLongProperty();
nameAr = new SimpleStringProperty();
nameFr = new SimpleStringProperty();
preference = new SimpleStringProperty();
qtyStart = new SimpleDoubleProperty();
qtyInHand = new SimpleDoubleProperty();
sellPrice = new SimpleDoubleProperty();
purchasePrice = new SimpleDoubleProperty();
taxe = new SimpleDoubleProperty();
}
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "product_seq_gen")
@SequenceGenerator(name = "product_seq_gen", sequenceName = "product_idproduct_seq", initialValue = 1, allocationSize = 1)
@Column(name = "idproduct", unique = true, nullable = false)
public Long getIdProduct() {
return idProduct.get();
}
public LongProperty idProductProperty() {
return idProduct;
}
public void setIdProduct(Long idProduct) {
this.idProduct.set(idProduct);
}
@Column(name = "nameAr")
public String getNameAr() {
return nameAr.get();
}
public StringProperty nameArProperty() {
return nameAr;
}
public void setNameAr(String nameAr) {
this.nameAr.set(nameAr);
}
@Column(name = "nameFr")
public String getNameFr() {
return nameFr.get();
}
public StringProperty nameFrProperty() {
return nameFr;
}
public void setNameFr(String nameFr) {
this.nameFr.set(nameFr);
}
@Column(name = "preference")
public String getPreference() {
return preference.get();
}
public StringProperty preferenceProperty() {
return preference;
}
public void setPreference(String preference) {
this.preference.set(preference);
}
@Column(name = "qtyStart")
public double getQtyStart() {
return qtyStart.get();
}
public DoubleProperty qtyStartProperty() {
return qtyStart;
}
public void setQtyStart(double qtyStart) {
this.qtyStart.set(qtyStart);
}
@Column(name = "qtyInHand")
public double getQtyInHand() {
return qtyInHand.get();
}
public DoubleProperty qtyInHandProperty() {
return qtyInHand;
}
public void setQtyInHand(double qtyInHand) {
this.qtyInHand.set(qtyInHand);
}
@Column(name = "sellPrice")
public double getSellPrice() {
return sellPrice.get();
}
public DoubleProperty sellPriceProperty() {
return sellPrice;
}
public void setSellPrice(double sellPrice) {
this.sellPrice.set(sellPrice);
}
@Column(name = "purchasePrice")
public double getPurchasePrice() {
return purchasePrice.get();
}
public DoubleProperty purchasePriceProperty() {
return purchasePrice;
}
public void setPurchasePrice(double purchasePrice) {
this.purchasePrice.set(purchasePrice);
}
@Column(name = "taxe")
public double getTaxe() {
return taxe.get();
}
public DoubleProperty taxeProperty() {
return taxe;
}
public void setTaxe(double taxe) {
this.taxe.set(taxe);
}
@OneToMany(mappedBy = "primaryKey.product", cascade = CascadeType.ALL)
public Set<LineCommand> getItems() {
return this.items;
}
public void setItems(Set<LineCommand> lineItems) {
this.items = lineItems;
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
} else {
if (this.idProduct.getValue() == ((Product) obj).getIdProduct())
return true;
else
return false;
}
}
}
LineCommand：
@Entity
@Table(name = "purchaseProduct")
@Access(AccessType.PROPERTY)
@AssociationOverrides({
@AssociationOverride(name = "primaryKey.product",
joinColumns = @JoinColumn(name = "idproduct")),
@AssociationOverride(name = "primaryKey.purchase",
joinColumns = @JoinColumn(name = "idpurchase"))})
public class LineCommand implements Serializable {
// Compostie key;
private LineCommandId primaryKey = new LineCommandId();
private DoubleProperty sellPrice = new SimpleDoubleProperty();
private DoubleProperty qty = new SimpleDoubleProperty();
private DoubleProperty subTotal = new SimpleDoubleProperty();
public LineCommand() {
this.sellPrice = new SimpleDoubleProperty();
this.qty = new SimpleDoubleProperty();
this.subTotal = new SimpleDoubleProperty();
NumberBinding subTotalBinding = Bindings.multiply(this.qty, this.sellPrice);
subTotal.bind(subTotalBinding);
}
@EmbeddedId
public LineCommandId getPrimaryKey() {
return primaryKey;
}
public void setPrimaryKey(LineCommandId primaryKey) {
this.primaryKey = primaryKey;
}
@Transient
public Product getProduct() {
return primaryKey.getProduct();
}
public void setProduct(Product product) {
primaryKey.setProduct(product);
}
@Transient
public Purchase getPurchase() {
return primaryKey.getPurchase();
}
public void setPurchase(Purchase purchase) {
primaryKey.setPurchase(purchase);
}
@Column(name = "price")
public double getSellPrice() {
return sellPrice.get();
}
public DoubleProperty sellPriceProperty() {
return sellPrice;
}
public void setSellPrice(double sellPrice) {
this.sellPrice.set(sellPrice);
}
@Column(name = "qty")
public double getQty() {
return qty.get();
}
public DoubleProperty qtyProperty() {
return qty;
}
public void setQty(double qty) {
this.qty.set(qty);
}
@Transient
public double getSubTotal() {
return subTotal.get();
}
public DoubleProperty subTotalProperty() {
return subTotal;
}
public void setSubTotal(double subTotal) {
this.subTotal.set(subTotal);
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
} else {
Product product = ((LineCommand) obj).getProduct();
Purchase purchase = ((LineCommand) obj).getPurchase();
if (getProduct().equals(product))
return true;
else
return false;
}
}
}
由于保存和删除方法完美无缺，我只使用了更新方法代码。
public boolean update(Purchase obj) {
try {
if (!session.isOpen())
session = DatabaseUtil.getSessionFactory().openSession();
session.beginTransaction();
Purchase purchase = session.get(Purchase.class, obj.getIdPurchase());
purchase.setCodePurchase(obj.getCodePurchase());
purchase.setDatePurchase(obj.getDatePurchase());
purchase.setTotalHt(obj.getTotalHt());
purchase.setTva(obj.getTva());
purchase.setTotalTTC(obj.getTotalTTC());
purchase.getLineItems().clear();
purchase.setLineItems(obj.getLineItems());
session.getTransaction().commit();
session.close();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
执行上述功能后，我得到一个异常：
org.hibernate.HibernateException: A collection with cascade="all-delete-orphan" was no longer referenced by the owning entity instance: model.Purchase.lineItems
at org.hibernate.engine.internal.Collections.processDereferencedCollection(Collections.java:99)
at org.hibernate.engine.internal.Collections.processUnreachableCollection(Collections.java:50)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushCollections(AbstractFlushingEventListener.java:243)
at org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:86)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:38)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1282)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:465)
at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:2963)
at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2339)
at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:485)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:147)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$100(JdbcResourceLocalTransactionCoordinatorImpl.java:38)
at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:231)
at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:65)
at dao.PurchaseDAO.update(PurchaseDAO.java:41)
at controller.purchase.PurchaseController.btnSaveClicked(PurchaseController.java:349)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1767)
at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1653)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Node.fireEvent(Node.java:8390)
at javafx.scene.control.Button.fire(Button.java:185)
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3758)
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3486)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2495)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:350)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:275)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$350(GlassViewEventHandler.java:385)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$$Lambda$431/1622936725.get(Unknown Source)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:404)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:384)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:927)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$145(WinApplication.java:101)
at com.sun.glass.ui.win.WinApplication$$Lambda$38/673617397.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)
我希望这清楚地表明我的主要问题。
答案 0 :(得分：1)
您正在Purchase上设置新的purchase.setLineItems(obj.getLineItems())
集合实例。
替换：
purchase.getLineItems().addAll(obj.getLineItems())
使用：
{{1}}