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https://issues.jboss.org/browse/AS7-4772?page=com.atlassian.jira.plugin.s...
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jaikiran pai commented on AS7-4772:
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I can certainly see the necessity of maintaining the order of the returned
Collection/Enumeration from the finderXXX methods, since they are backed by application
specific EJB QL queries. IMO, we can do this change, but I'll do a quick check with
Alexey (who's worked in EJB2.x more than I have) to see if he's sees any potential
problems.
{quote}
I would be happy to provide a test case and a pull request with this change.
{quote}
Sure. You can start with the changes and the testcase while I check with Alexey. If you
need any help, feel free to ask here or in the forums or #jboss-as7 IRC on
irc.freenode.net. Here's an article on getting started
http://community.jboss.org/wiki/HackingonAS7
Maintain iteration order for entity bean finders
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Key: AS7-4772
URL:
https://issues.jboss.org/browse/AS7-4772
Project: Application Server 7
Issue Type: Feature Request
Components: EJB
Affects Versions: 7.1.1.Final
Reporter: Mattias Nilsson
Assignee: jaikiran pai
Labels: ejb2, find, interceptor, iterators, sorting
In previous JBoss AS versions (at least in JBoss AS 4.x) if a finder method in an EJB 2.x
entity bean returned a collection or enumeration of primary keys in a specific order, the
client would receive a collection or enumeration of entities with the same iteration
order.
In JBoss AS 7, the entity bean home interceptor uses a HashSet when producing the
collection of entities. This means iteration order is lost and clients receive the
entities in random order.
As a convenience and as a backward compatibility for users migrating from previous JBoss
versions, could you consider replacing java.util.HashSet with java.util.LinkedHashSet in
org.jboss.as.ejb3.component.entity.interceptors.EntityBeanHomeFinderInterceptorFactory? I
would be happy to provide a test case and a pull request with this change.
Regards,
Mattias
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