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• Can I call a stored procedure with hibernate criteria?

  - by Gaston

  This is my problem, I have to use a big SP, and there is no time to rewrite in java. So I'm using Hibernate criteria and I don't know if i can call it. Thanks to all.

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• How to get distinct results in hibernate with joins and row-based limiting?

  - by Daniel Alexiuc

  I'm trying to implement paging using row-based limiting (for example: setFirstResult(5) and setMaxResults(10)) on a Hibernate Criteria query that has joins to other tables. Understandably, data is getting cut off randomly; and the reason for that is explained here. As a solution, the page suggests using a "second sql select" instead of a join. How can I convert my existing criteria query (which has joins using createAlias()) to use a nested select instead?

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• What other libraries or tools would you add to a Spring/Hibernate stack for improved rapid applicati

  - by CaptainAwesomePants

  My team at work maintains a fairly large webapp written on top of Spring and Hibernate. We're about to start making some fairly large scale changes to the site, and we're enamored with the rapid application development speeds allowed by some other frameworks, like Rails. We haven't really changed our stack much in the last year or two, and I'm wondering what new tools, approaches, and libraries might be out there to help speed up webapp development.

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• Hibernate. How can we set name of PK/FK using annotations?

  - by Max

  We have hibernate-based system and customer wants to get human-readable names of PK and FK. In our project we use annotated entity classes. Is it renaming possible?

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• Does Hibernate always need a setter when there is a getter?

  - by Marcus

  We have some Hibernate getter methods annotated with both @Column and @Basic. We get an exception if we don't have the corresponding setter. Why is this? In our case we are deriving the value returned from the getter (to get stored in the DB) and the setter has no functional purpose. So we just have an empty method to get around the error condition..

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• What are some good sample applications using Spring and Hibernate?

  - by Peter Kelley

  I need a quick jump start for using Spring and Hibernate together and I was looking for some sample code to modify and extend. Bonus points for Struts2 and Spring Security integration.

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• Is there a way to tell JPA/Hibernate to transform column names from camcel case to _'s?

  - by egervari

  Is there a generic way to tell JPA/Hibernate to transform all column names of the form: emailAddress to the form: email_address ? I'd rather not have to use a @Column annotation for hundreds of columns. I hope someone thought of this ;)

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• How to achieve "not in" by using Restrictions and criteria in Hibernate?

  - by Shashi Bhushan

  I have list of category. I need a list of category by excluding 2,3 row. Can we achieve through hibernate by using Criteria and Restriction?

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• Different cache concurrent strategies for root entity and its collection (Hibernate with EHCache)?

  - by grigory

  Given example from Hibernate docs and modifying it so that root level entity (Customer) is read-only while one of its collections (tickets) is read-write: @Entity @Cache(usage = CacheConcurrencyStrategy.READ_ONLY) public class Customer { ... @OneToMany(...) @Cache(usage = CacheConcurrencyStrategy.READ_WRITE) public SortedSet<Ticket> getTickets() { return tickets; } ... } Would collection of tickets get refreshed when accessing customer from cache?

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• what's the best practice to config Hibernate-Spring for multiple database relationship?

  - by nazila

  We have a main mysql database which all of the applications within our organization need the data within this database. How can I config my java web application to use this database with it's specific database when I use Spring and Hibernate within my application? How can I config JPA annotations for example between CONTRACT table within my database and COUNTRY table within our main database? what's the best practice to do this?

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• What is the best way to launch HSQL for unit testing, when working with spring, maven and hibernate?

  - by user166172

  In my project I can successfully test database code. I'm using Spring, Hibernate, HSQL, junit and Maven. The catch is that currently I have to launch HSQL manually prior to running the tests. What is the best way to automate the launching of HSQL with the technologies being used?

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• Is there a way to specify wildcarded region names when using ehcache with hibernate?

  - by bkent314

  When using Ehcache with Hibernate, is there a way to specify region names with wildcards in the ehcache.xml file? For example, to allow for cache settings at the package level (with * as a wildcard indicator): <cache name="com.example.my.package1.*" ... /> <cache name="com.example.my.package2.*" ... /> (Note: The package-level distinction is just an example. My question is to wildcards in the general case.)

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• Using serializable in hibernate what underlying database types do i use.

  - by joe90

  I need to use a serializable type in hibernate (to store a Subject (security)) All this works fine. I just need to know what the underlying database types are for the following databases: MSSQL - I used 'image' db2 - postgre - mysql - Thanks..

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• Configure Hibernate to obtain a fresh connection from a connection pool.

  - by ferrari fan

  How do I configure Hibernate so that each time I call sessionFactory.openSession() it connects with a new connection from the connection pool? The connection pool is managed by Websphere Application Server and is a JDBC Data Source. Thanks

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• Is there a way to get only the changed columns from an object using Hibernate?

  - by Vaishak Suresh

  In a persistent object, If i change only one field, Is it possible to find out the changed field only through Hibernate? I know I can get the entire old row and new row and compare.

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• When using spring and hibernate, how are sessions/transactions handled?

  - by Blankman

  when using hibernate with spring, can someone explain how the session unit of work and transactions are handled? is the transaction started at the beginning of the page request, and committed at the end? can I have multiple db calls per request, that each have different transaction levels? e.g. some are left as default, while others are read-uncommitted?

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• Does Hibernate log the values that it assigns to placeholders in prepared SQL statements?

  - by Derek Mahar

  Does Hibernate log the values that it assigns to placeholders in prepared SQL statements? How can configure Log4j so that it writes these values to my log files?

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• How do I persist a Java property of type Object using Hibernate?

  - by afielden

  I have a Java class with a property like this private Object myObj; When I try to save the class using Hibernate annotations, I get the rather confusing error message "property mapping has wrong number of columns". What is the correct approach to persisting a class containing a generic property such as this?

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• Does there exist a tool for DB schema migration where schema are specified using Hibernate ?

  - by madewulf

  I am used to Django South http://south.aeracode.org/, which allows schema and data migrations for Django projects. Does there exist a similar tool for Hibernate projects ?

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• one to many mapping within the same table in Hibernate..

  - by saurabh

  I have a table containing primary key and foreign key that references same table. How can I implement this mapping in hibernate...

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• How to implement Flex front end with back ends of Java hibernate and JPA?

  - by leon

  Hi guys I have a designed a back end solution with Java Hibernate and JPA. Now I want to implement it with Flex front end. How shall I do it? Is it possible without using BladeDS? Just using Servlet or something? Please guide Thanks

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• How can I set hibernate database config from outside config file?

  - by newbie

  I need to have hibernate database config set from outside text file, how can I do it? Is there some kind of method for this, or do I have to make my own?

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• In hibernate how do I always use db server's timestamp?

  - by Vishal

  Hi, I would like to add db server's timestamp in last_update column of my table. How can I achieve this in hibernate? Thanks

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• What is detached persistance and transient object in hibernate ?

  - by abc

  What is detached persistance and transient object in hibernate ? please clearify me with example.. Thankx in advance..

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• Difference between FlushMode.AUTO and FlushMode.ALWAYS in Hibernate?

  - by GK

  Have gone through hibernate api specification on FlushMode but didn't get the exact difference. So please help.

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