like Gavin soad: ThreadLocal is the solution.
Heres my solution, but you need base classes for all your session- and entitybeans:
Code:
public class PropagateSessionContextInterceptor {
@AroundInvoke
public Object myInterceptor(InvocationContext ctx) throws Exception
{
BaseSessionBean sb = (BaseSessionBean)ctx.getBean();
BaseEntity.setSessionContext(sb.ctx);
Object o = ctx.proceed();
return o;
}
}
Code:
@Interceptors( {PropagateSessionContextInterceptor.class})
public class BaseSessionBean {
@PersistenceContext(unitName = "foobar")
protected EntityManager manager;
@Resource
public SessionContext ctx;
}
Code:
@MappedSuperclass
public abstract class BaseEntity {
static final ThreadLocal<SessionContext> sessionContext = new ThreadLocal<SessionContext>();
static SessionContext getSessionContext() {
return sessionContext.get();
}
static void setSessionContext(SessionContext ctx) {
sessionContext.set(ctx);
}
protected long id;
protected int version;
protected String createdBy;
protected String updatedBy;
protected Date createdTime;
protected Date updatedTime;
public void setVersion(int version) {
this.version = version;
}
@Basic
public String getCreatedBy() {
return createdBy;
}
public void setCreatedBy(String createdBy) {
this.createdBy = createdBy;
}
@Basic
public String getUpdatedBy() {
return updatedBy;
}
public void setUpdatedBy(String updatedBy) {
this.updatedBy = updatedBy;
}
@Basic
public Date getCreatedTime() {
return createdTime;
}
public void setCreatedTime(Date createdTime) {
this.createdTime = createdTime;
}
@Basic
public Date getUpdatedTime() {
return updatedTime;
}
public void setUpdatedTime(Date updatedTime) {
this.updatedTime = updatedTime;
}
@PrePersist
public void handleCreate() {
try {
setCreatedTime(new Date());
Principal callerPrincipal = getSessionContext().getCallerPrincipal();
setCreatedBy(callerPrincipal == null ? null : callerPrincipal.getName());
}
catch (RuntimeException e) {
e.printStackTrace();
}
}
@PreUpdate
public void handleUpdate() {
try {
setUpdatedTime(new Date());
Principal callerPrincipal = getSessionContext().getCallerPrincipal();
setUpdatedBy(callerPrincipal == null ? null : callerPrincipal.getName());
}
catch (RuntimeException e) {
e.printStackTrace();
}
}
}
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