[jbossts-issues] [JBoss JIRA] (JBTM-2306) Tooling does not display the type of a heuristic

Michael Musgrove (JIRA) issues at jboss.org
Tue Nov 25 10:38:39 EST 2014

    [ https://issues.jboss.org/browse/JBTM-2306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13022819#comment-13022819 ] 

Michael Musgrove commented on JBTM-2306:

The missing bit of the interface is:
     * A reference to the entity that caused the heuristic.
     * @return the entity reference
    public Object getEntityReference();

I think we would need to firm up the type of reference returned in order for it to be usable for recovery purposes. We would also need to warn users that recovery via this interface may conflict with our existing recovery mechanism.

When you say "we need to consider whether it should be added back" - what would be the best mechanism to discuss that, via a forum post or via a JIRA that people can vote up, or something else?

> Tooling does not display the type of a heuristic
> ------------------------------------------------
>                 Key: JBTM-2306
>                 URL: https://issues.jboss.org/browse/JBTM-2306
>             Project: JBoss Transaction Manager
>          Issue Type: Bug
>          Components: Tooling
>    Affects Versions: 5.0.3
>            Reporter: Michael Musgrove
>            Assignee: Michael Musgrove
>            Priority: Minor
>             Fix For: 6.0.0
> The new JMX based tooling for browsing abstract records does not display the particular type of a heuristic *when it's available*.
> There is a comment in the javadoc for AbstractRecord which seems to indicate that the particular kind of heuristic may be available:
> {code}
> 	/**
> 	 * If this abstract record caused a heuristic then it should return an
> 	 * object which implements <code>HeuristicInformation</code>
> 	 *
> 	 * @return <code>Object</code> to be used to order.
> 	 */
> 	public abstract Object value ();
> {code}
> HeuristicInformation contains a method getHeuristicType() which looks like it may report the particular kind of heuristic.:
> {code}
> public interface HeuristicInformation {
>     /**
>      * The type of heuristic.
>      * @return the heuristic type
>      */
>     public int getHeuristicType();
> {code}
> This JIRA is asking for value() object to be consulted to see if it contains an instance of HeuristicInformation and if so to report it in the JBX MBean corresponding to the AR.
> Note that such a change would only affect 3rd party implementers of ARs (since our own code does not set this field).

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