1. How do I just fetch the primary key(s) alone from a table stackoverflow.comI have an entity public class GroupUser { Group g; User u; }. How do I fetch just the primary key(s) of all users. (i.e. List of u.getId() for a query ... |
2. JPA: How to fetch primary key dynamically coderanch.comHello, I have been working with JPA from past few months. Recently, I am involved in writing EJB3 statless bean, Interceptor & JPA. Before manager's (statless bean's) method gets invoked, I am intercepting it through interceptor. In my manager method, I am annotating some arguments (entities) as @RequiresPersistenceCheck a custom annotation. In my interceptor, i need to check if that argument ... |
3. How to retrieve primary key info on ConstraintViolationExcep forum.hibernate.orgGreetings, I'm using hibernate with Oracle and, try as I might, I'm unable to retrieve the actual primary key value of a record that's causing primary key violation. I've searched the forums and placed: log4j.logger.org.hibernate.util.JDBCExceptionReporter=error in my log4j properties but with no success. This is the only meaningful information I can retrieve: insert into CHARGE (ACCOUNT_ID, BILL_PERIOD_END_DATE, BILL_PERIOD_START_DATE, BILLED_IND, CALCULATED_CHARGE, CALCULATED_DISCOUNT, ... |
4. Fetching data from a Database Vew with no primary key forum.hibernate.orgI have a Database View based on multiple tables . I can't have a primary key for a view(since it is virtual). I map through composite key. When I try to fetch data from the Database View using 'distinct' clause, I get only first record of every group but repeated n times(i.e total no of rows of that group) 1.view contains ... |
5. Fetching Objects from Table having no primary key. forum.hibernate.orgI am having one table.This table do'nt have any primary key.I am trying to fetch records For the identifiers RegNumber and linNumber there are 3 rows in the table.When I fetch the object.I get first object 3 times insteed to 3 diferent objects. I read in Hibernate documentation that if, within a single session, you request two objects which have the ... |
6. Assigned primary key returns null when retrieve from db forum.hibernate.org |
7. Retrieve a primary key value which is set by hibernate forum.hibernate.orgI have a Trade object in Java which has methods setTradeId() and getTradeId(). Hibernate automatically sets a value for the tradeid which is the primary key of this table. Java Code: ----------- Trade trade = new Trade(); //trade.setId(189); // Automatic generation.I dont need to invoke this method. trade.setTradeDate(new Date()); trade.setName("Testing"); |
8. Inconsistent fetching of object by primary key forum.hibernate.orgNewbie Joined: Tue Aug 18, 2009 5:57 am Posts: 3 I have the following problem: The foreign key of a child class is not always filled with the same value as the primary key of the parent class. I have two domain objects which also exist as MySQL tables namely Onderzoek and Monster. With a 0>n relationship OND_Nummer is the primary ... |