List
を呼び出してオブジェクトを保存するとsaveListOfPageChooserElement
、以下の例外がスローされます
一方、 を呼び出して単一のインスタンスを保存するとsaveOrUpdate
、正常に動作します。
しかし、パフォーマンスを向上させるために、一度に 1 つのオブジェクトではなくリスト バッチを保存したいと考えています。
リスト全体を一度に保存することの問題点を誰か提案できますか?
List<Abc> listabc = widgetCopyDAO
.fetchabcByPageId(id);
for (Abc abc: listabc ) {
abc.setLastUpdatedBy(null);
abc.setLastUpdatedOn(null);
abc.setCreatedBy(widgetCopyDTO.getUserName());
abc.setCreatedOn(new Date());
abc.setPageChooser(new PageChooser(chooser.getId()));
abc.setId(0l);
issuePageWidgetDAO.saveOrUpdate(abc);
}
// widgetCopyDAO.saveListOfPageChooserElement(listabc);
public void saveOrUpdate(Abc abc) {
if (abc.getId() == 0) {
Long id = (Long) this.getHibernateTemplate().save(
abc);
abc.setId(id);
} else {
this.getHibernateTemplate().update(abc);
}
}
public void saveListOfPageChooserElement(
List<Abc> listabc) {
this.getHibernateTemplate().saveOrUpdateAll(listabc);
}
例外は
org.springframework.orm.hibernate3.HibernateSystemException: identifier of an instance of com.mct.model.Abc was altered from 138 to 0; nested exception is org.hibernate.HibernateException: identifier of an instance of com.mct.model.Abc was altered from 138 to 0
at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:676)
at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:424)
at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
at org.springframework.orm.hibernate3.HibernateTemplate.findByCriteria(HibernateTemplate.java:1055)
at org.springframework.orm.hibernate3.HibernateTemplate.findByCriteria(HibernateTemplate.java:1048)
at com.mct.dao.WidgetCopyDAO.fetchPageChooserWithImagesByChooser(WidgetCopyDAO.java:82)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at org.springframework.aop.framework.adapter.ThrowsAdviceInterceptor.invoke(ThrowsAdviceInterceptor.java:126)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:50)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:50)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy58.fetchPageChooserWithImagesByChooser(Unknown Source)
at com.mct.service.widgethelper.ChooserWidget.copyWidget(ChooserWidget.java:676)
at com.mct.service.widgethelper.ChooserWidget.copyAllWidgets(ChooserWidget.java:634)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown