Logical Delete from an EJB database - postgresql

Question

I have a database and the tables in this database are interconnected.
I am using seam and EJB to process data inside these tables in the database.
My backend database is postgres.
Now what I am trying to do is that I want to delete data from one table but I am getting a postgres sql error which tells me that I am violating rules.
I understand that I can delete this database logically
- A situation where I have to delete the database and set a flag.
But I don't know how to do this. I know this is simple but pardon me. I dont know it. Any help will be appreciative. Below is the code that I am using. Thank you for your help.
public void delete() throws java.sql.SQLException {
System.out.println("I got here FIRST");
user =em.find(Subscriber.class, subscriber.getId()); //ADDED LATER
users.remove(subscriber.getId());
em.remove(subscriber);
userList();
}

Answer 1

From what I can see at the first glance, is that you perhaps want to delete the user you are querying?
Thus, change em.remove(subscriber); to em.remove(user); //which you load from the find method
Update
Without know what kind of flag you want to check against, let me demonstrate how you can do this:
Lets assume User has a boolean field called disabled, and you want to only remove disabled users.
if(user.isDisabled())
em.remove(user);
So you only remove users if flag is true.