Hibernate 4.0 Final と ojdbc6 を使用して Web アプリケーションを開発しています。新しい親子関係を挿入しようとする場合を除いて、すべて問題ありません。まず、エンティティは次のとおりです。
@Entity
@Table(name = "EMPLOYEE")
public class Employee implements Serializable, Cloneable {
@Id
@SequenceGenerator(name = "seq", sequenceName = "P_SEQ")
@GeneratedValue(generator = "seq")
@Column(name = "ID_EMPLOYEE")
private long idEmployee;
......
@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER, mappedBy = "employee", orphanRemoval = true)
@Fetch(FetchMode.SELECT)
@BatchSize(size = 10)
private Set<Address> addresses;
......
}
@Entity
@Table(name = "ADDRESS")
public class Address implements Serializable, Cloneable, Comparable {
@Id
@SequenceGenerator(name = "seq", sequenceName = "P_SEQ")
@GeneratedValue(generator = "seq")
@Column(name = "ID_ADDRESS")
private long idAddress;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "ID_EMPLOYEE")
private Employee employee;
.......
}
次の 2 つのシナリオを見てみましょう。
- 従業員が既に存在し、それに新しいアドレスを追加しようとしました --> 正常に動作します。
- 従業員がまだ存在しないため、新しい従業員を作成しようとしています。2 つの異なるケース:
- a) 従業員のみを挿入します (住所なし) --> 正常に動作します。
- b) 従業員とその住所を挿入します -->失敗します。これはアトミックなトランザクションでなければならないと言わざるを得ません。つまり、従業員とその住所を一度に作成 (保存) する必要があります。
これはトランザクション ハンドラです。
public static void save(Employee employee) throws HibernateException, Exception {
Session session = HibernateUtil.getCurrentSession();
session.beginTransaction();
try {
session.saveOrUpdate(employee);
} catch (Exception ex) {
session.refresh(employee);
HibernateUtil.closeSession();
throw ex;
}
HibernateUtil.commitTransaction();
}
public static void commitTransaction() throws Exception {
Transaction tx = getSessionFactory().getCurrentSession().getTransaction();
try {
if (tx != null && !tx.wasCommitted() && !tx.wasRolledBack()) {
tx.commit();
}
} catch (Exception ex) {
tx.rollback();
throw ex;
} finally {
closeSession();
}
}
ご想像のとおり、私が懸念しているのは 2.b ケースです。トランザクションをデバッグしました。これは、save() メソッド (DAO クラスにあります) を呼び出したときに得られるものです。
- session.saveOrUpdate(employee)メソッドは正常に実行されます(保存された従業員に住所があることを確認できます)。その上、それ
idEmployee
は適切に設定され (シーケンスから取得)、アドレスは従業員にバインドされ、有効なidAddress
(同様にシーケンスから取得されます) があります。 - commitTransaction()メソッドの実行中に を取得しますが、との
org.hibernate.exception.ConstraintViolationException
両方が以前に適切に設定されています。idEmployee
idAddress
つまり、コミットプロセス中に例外が発生します。これは、親 (従業員) ではなく子 (アドレス) をコミットし始めたようなものです。
私は何を間違っていますか?誰でも私を助けることができますか?前もって感謝します。
更新しました。上の図は、問題に関係する 2 つのクラスの主要部分を示しています。さて、ここに例外のトレース以外にそれらを呼び出すメソッドがあります。それらは、呼び出された順序になっています。
DataBacking クラスに属しています:
public void save(ActionEvent event) {
try {
EmployeeDAO.save(selectedEmployee);
newEmployee(); //reset the employee and its collections
} catch (ConstraintViolationException ex) {
Utilities.addFacesMessage(FacesMessage.SEVERITY_WARN, ex.getMessage(), "");
} catch (Exception ex) {
Utilities.log("error", ex.getCause().toString());
Utilities.addFacesMessage(FacesMessage.SEVERITY_WARN, ex.getMessage(), "");
}
}
EmployeeDAO クラスに属しています:
public static void save(Employee employee) throws HibernateException, Exception {
Session session = HibernateUtil.getCurrentSession();
session.beginTransaction();
try {
session.saveOrUpdate(employee);
} catch (Exception ex) {
session.refresh(employee);
HibernateUtil.closeSession();
throw ex;
}
HibernateUtil.commitTransaction();
}
HibernateUtil クラスに属しています:
public static void commitTransaction() throws Exception {
Transaction tx = getSessionFactory().getCurrentSession().getTransaction();
try {
if (tx != null && !tx.wasCommitted() && !tx.wasRolledBack()) {
tx.commit();
}
} catch (Exception ex) {
tx.rollback();
throw ex;
} finally {
closeSession();
}
}
EmployeeDAO.save() メソッドが session.SaveOrUpdate(employee) を呼び出した直後に、次のトレースを取得します。
2013-03-12 07:22:55,958 [DEBUG, org.hibernate.internal.SessionImpl] Opened session at timestamp: 13630693759
2013-03-12 07:22:57,584 [DEBUG, org.hibernate.engine.transaction.spi.AbstractTransactionImpl] begin
2013-03-12 07:22:57,585 [DEBUG, org.hibernate.engine.jdbc.internal.LogicalConnectionImpl] Obtaining JDBC connection
2013-03-12 07:22:57,586 [DEBUG, org.hibernate.engine.jdbc.internal.LogicalConnectionImpl] Obtained JDBC connection
2013-03-12 07:22:57,587 [DEBUG, org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction] initial autocommit status: true
2013-03-12 07:22:57,587 [DEBUG, org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction] disabling autocommit
2013-03-12 07:23:00,285 [DEBUG, org.hibernate.SQL]
select
P_SEQ.nextval
from
dual
2013-03-12 07:23:00,361 [DEBUG, org.hibernate.id.SequenceGenerator] Sequence identifier generated: BasicHolder[java.lang.Long[5665]]
2013-03-12 07:23:00,365 [DEBUG, org.hibernate.event.internal.AbstractSaveEventListener] Generated identifier: 5665, using strategy: org.hibernate.id.SequenceGenerator
2013-03-12 07:23:00,411 [DEBUG, org.hibernate.SQL]
select
P_SEQ.nextval
from
dual
2013-03-12 07:23:00,417 [DEBUG, org.hibernate.id.SequenceGenerator] Sequence identifier generated: BasicHolder[java.lang.Long[5666]]
2013-03-12 07:23:00,421 [DEBUG, org.hibernate.event.internal.AbstractSaveEventListener] Generated identifier: 5666, using strategy: org.hibernate.id.SequenceGenerator
そして、コミットが呼び出された後:
2013-03-12 07:24:53,288 [DEBUG, org.hibernate.engine.transaction.spi.AbstractTransactionImpl] committing
2013-03-12 07:24:53,336 [DEBUG, org.hibernate.event.internal.AbstractFlushingEventListener] Processing flush-time cascades
2013-03-12 07:24:53,343 [DEBUG, org.hibernate.event.internal.AbstractFlushingEventListener] Dirty checking collections
2013-03-12 07:24:53,403 [DEBUG, org.hibernate.engine.internal.Collections] Collection found: [org.svq.pol.gesper.bean.Employee.addresses#5665], was: [<unreferenced>] (initialized)
2013-03-12 07:24:53,439 [DEBUG, org.hibernate.event.internal.AbstractFlushingEventListener] Flushed: 2 insertions, 0 updates, 0 deletions to 2 objects
2013-03-12 07:24:53,440 [DEBUG, org.hibernate.event.internal.AbstractFlushingEventListener] Flushed: 1 (re)creations, 0 updates, 0 removals to 1 collections
2013-03-12 07:24:53,453 [DEBUG, org.hibernate.internal.util.EntityPrinter] Listing entities:
2013-03-12 07:24:53,454 [DEBUG, org.hibernate.internal.util.EntityPrinter] org.svq.pol.gesper.bean.Address{address=fasdf, pc=, city=fadsf, idAddress=5666, operator=xxxxx, province=, telef2=, movDate=Tue Mar 12 07:21:15 CET 2013, telef1=, employee=org.svq.pol.gesper.bean.Employee#5665, version=0}
2013-03-12 07:24:53,456 [DEBUG, org.hibernate.internal.util.EntityPrinter] org.svq.pol.gesper.bean.Employee{surname=fadsf, user=null, dob=Tue Jan 01 00:00:00 CET 1980, address=[org.svq.pol.gesper.bean.Address#5666], pob=fadsf, operator=xxxxx, movDate=Tue Mar 12 07:21:15 CET 2013, version=0, name=fasdf, gender=H, idEmployee=5665, id=12345678}
2013-03-12 07:24:53,572 [DEBUG, org.hibernate.SQL]
insert
into
EMPLOYEE
(SURNAME, ID, MOV_DATE, DOB, GENDER, POB, OPERATOR, USER, VERSION, ID_EMPLOYEE)
values
(?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
2013-03-12 07:24:53,793 [DEBUG, org.hibernate.SQL]
insert
into
ADDRESS
(pc, address, MOV_DATE, OPERATOR, ID_EMPLOYEE, city, province, telef_1, telef_2, version, ID_ADDRESS)
values
(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
2013-03-12 07:24:53,943 [DEBUG, org.hibernate.engine.jdbc.spi.SqlExceptionHelper] ORA-02291: integrity constraint (PERPLADM.ADDRESS_EMPLOYEE_FK) violated - parent key not found
[n/a]
java.sql.SQLIntegrityConstraintViolationException: ORA-02291: integrity constraint (PERPLADM.ADDRESS_EMPLOYEE_FK) violated - parent key not found
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:445)
at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:396)
at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:879)
at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:450)
at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:192)
at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:531)
at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:207)
at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:1044)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1329)
at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3584)
at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:3665)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeUpdate(OraclePreparedStatementWrapper.java:1352)
at org.apache.tomcat.dbcp.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:105)
at org.apache.tomcat.dbcp.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:105)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:122)
at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)
at $Proxy46.executeUpdate(Unknown Source)
at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:56)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2849)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3290)
at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:80)
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:273)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:265)
at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:186)
at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:323)
at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:52)
at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1081)
at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:315)
at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101)
at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:175)
at org.svq.pol.gesper.utility.HibernateUtil.commitTransaction(HibernateUtil.java:57)
at org.svq.pol.gesper.dao.EmployeeDAO.save(EmployeeDAO.java:110)
at org.svq.pol.gesper.backing.DataBacking.save(DataBacking.java:498)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.el.parser.AstValue.invoke(AstValue.java:262)
at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.event.MethodExpressionActionListener.processAction(MethodExpressionActionListener.java:148)
at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:769)
at javax.faces.component.UICommand.broadcast(UICommand.java:300)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:409)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:964)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
2013-03-12 07:24:54,027 [WARN, org.hibernate.engine.jdbc.spi.SqlExceptionHelper] SQL Error: 2291, SQLState: 23000
2013-03-12 07:24:54,027 [ERROR, org.hibernate.engine.jdbc.spi.SqlExceptionHelper] ORA-02291: integrity constraint (PERPLADM.ADDRESS_EMPLOYEE_FK) violated - parent key not found