If set the dynamic-insert to true, which means exclude unmodified properties in the Hibernate’s SQL update statement.
For example, get an object and try modify its value and update it again.
Query q = session.create Query("from Stock Transaction where tran Id = :tran Id "); Parameter("tran Id", 11); Stock Transaction stock Tran = (Stock Transaction)q.list().get(0); stock Volume(4000000L); session.update(stock Tran); Performance issue In a large table with many columns (legacy design) or contains large data volumes, update some unmodified columns are absolutely unnecessary and great impact on the system performance.
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Abstract Persistent Collection.throw Lazy Initialization Exception(Abstract Persistent Collection.java:380) at org.hibernate.collection.
Abstract Persistent Collection.throw Lazy Initialization Exception If Not Connected(Abstract Persistent Collection.java:372) at org.hibernate.collection.
It was a Task object, which can contain other Tasks, which can contain other Tasks, and so on.
Since there is no built in Tree data structure in the java.utils package, I had to create my own.
In my opinion, this is both a good thing and a bad thing for Java programmers.
Its good because you dont have to worry about implementing a Vector for each project (or remember which third party library to include or purchase), and its bad, because it makes you lazy.One of its main features is mapping of hibernate exceptions to Data Access Exceptions.The main method in Hibernate Template is the method that takes in a hibernate callback.Hibernate just holds the state of the new object, loaded object and updated object. The methods which you are using are for updating its states and ultimately updated in database after the unit of work is completed. If you want to receive the future articles on hibernate, please subscribe here. That means it insert an entry if the identifier doesn’t exist, else it will throw error. I apply zk 3 when user click one row of employee listbox, it go to access employee's family. How do I get Session in my DAO class with ZK and lazy loading? use get Hibernate Template()ex:public void save Or Update(Object obj) I always got " session is closed" when ZK UI tries to access lazy loading set. Lazy Initialization Exception - failed to lazily initialize a collection of role: ..., no session or session was closedorg.hibernate.