Advertisement

01.09.2008 at 11:30AM PST, ID: 23070528
[x]
Attachment Details
[x]
The Solution Rating System

With so many solutions, how can you tell which solutions are most likely to help you and which ones are not? To provide you with a tool to use, we rate our solutions based on various elements that most accurately determine if a solution is a quality solution. To explain what factors affect the solution rating, here are the elements we take into consideration when formulating our solution rating.

  • The Grade of the Solution
  • The Zone Rank of the Expert Providing the Solution
  • The Number of Author and Expert Comments
  • The Number of Experts Contributing
  • The Feedback of the Community

Your Input Matters
Because of the way the system is set up, the most important variable in this equation is you. As a member of Experts Exchange, you are able to cast your vote on the quality of the solutions in regard to how complete, accurate, helpful and easy to understand each solution is. When you provide your feedback, each rating is adjusted accordingly. So, if you see a solution that has a poor rating that you think is a good solution, let us know by rating it. As you do, the rating will be adjusted and will become more accurate for other members of our site.

If you have any suggestions that you would like to make for our rating system, please ask a question in the Suggestions Zone of Community Support.

Thank you!

7.6

Hibernate many to many relationship order by

Asked by dodozhang21 in J2EE Frameworks, Java Programming Language, Miscellaneous Web Development

Tags: , ,

Hi I was wondering when you have a many to many relationship in Hibernate if you can still order by a column on one of the child table.

For example, I have a client obj that has a set of addresses. Client and address have a many to many relationship, addresses are mapped on the client like this

<set name="addresses" table="client_address" cascade="all-delete-orphan" order-by="col1">
      <key column="client_id" not-null="true" />
      <many-to-many class="model.Address" column="address_id" unique="true" />
</set>

The mapping uses a reference table that only contains columns client_id and address_id. If I want to order the collection of addresses on the client obj based on a particular column in the address table, what do I need to do? I tried to use just the column name but I get error like

Caused by: java.sql.SQLException: Unknown column 'addresses0_.col1' in 'order clause'

That's because it is looking for the column in the client_address reference table instead of the address table.

How can I tell hibernate to look for the column in the address table?

ThanksStart Free Trial
[+][-]01.11.2008 at 01:38AM PST, ID: 20635088

View this solution now by starting your 7-day free trial. Setting up your free trial is quick, easy, and secure. We will return you to this solution, unlocked, when you're done.

 

About this solution

Zones: J2EE Frameworks, Java Programming Language, Miscellaneous Web Development
Tags: Hibernate, Java, Hibernate, java hibernate
Sign Up Now!
Solution Provided By: girionis
Participating Experts: 1
Solution Grade: B
 
 
 
Loading Advertisement...
20080924-EE-VQP-39 / EE_QW_2_20070628