The problem is simple,
I have an object called Task which has a property called owner that is
mapped as follows,
@ManyToOne(cascade={CascadeType.PERSIST,CascadeType.REFRESH,CascadeType.MERGE})
@Cascade({org.hibernate.annotations.CascadeType.SAVE_UPDATE,
org.hibernate.annotations.CascadeType.MERGE,
org.hibernate.annotations.CascadeType.PERSIST})
public User getOwner() {
return owner;
}
I have a JSP page in my Struts 2 appfuse app as follows,
<s:textfield name="name" label="name" theme="xhtml"/>
<s:select key="owner.id" list="users" listKey="id"
listValue="fullName" multiple="false" size="1"
theme="xhtml"/>
When I post this, everything is wired up ok until I call
TaskManager.save(task) in my Action when I get the following error,
Stacktraces
org.springframework.orm.hibernate3.HibernateSystemException: identifier of
an instance of org.appfuse.model.model.User was altered from 2 to 11; nested
exception is org.hibernate.HibernateException: identifier of an instance of
org.appfuse.model.User was altered from 2 to 11
org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:659)
org.springframework.orm.hibernate3.HibernateTransactionManager.convertHibernateAccessException(HibernateTransactionManager.java:690)
org.springframework.orm.hibernate3.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:566)
org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:662)
org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:632)
org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:319)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:116)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
$Proxy70.save(Unknown Source)
Surely given that I have configured cascading for the persistence correctly,
should the owner object not be refreshed dynamically instead of trying to
overwrite the id of the existing object?
What is the best way around this short of me having to use a temp var like
frmOwner and assigned task.setOwner which is not really an option as I want
to pursue a REST architecture.
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