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https://issues.apache.org/jira/browse/QPID-7049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15148434#comment-15148434
 ] 

Rob Godfrey commented on QPID-7049:
-----------------------------------

{quote}
Measleading messages in test 
org.apache.qpid.server.model.testmodels.hierarchy.InjectedAttributeTest#testInjectedStatistic
The stat description is "What is 6 x 9?" which sort of implies that 54 by 
inject statistic but test is actually testing value 42.
{quote}

Sorry - I was being a little whimsical... you need to know your [Hitchhiker's 
guide to the 
Galaxy|https://www.quora.com/The-Hitchhikers-Guide-to-the-Galaxy-creative-franchise/Why-does-six-times-nine-equal-forty-two]

{quote}
Test fly method in tests can confuse as well.
{quote}

A car can fly to a height of exactly 0 (metres, feet, whichever unit you 
choose), car's generally don't fly at any other altitude :-)

> [Java Broker] Provide a mechanism to inject attribute/statistic definitions 
> into types at runtime
> -------------------------------------------------------------------------------------------------
>
>                 Key: QPID-7049
>                 URL: https://issues.apache.org/jira/browse/QPID-7049
>             Project: Qpid
>          Issue Type: Improvement
>          Components: Java Broker
>            Reporter: Rob Godfrey
>            Assignee: Rob Godfrey
>             Fix For: qpid-java-6.0.1, qpid-java-6.1
>
>
> In some cases it is not possible to know what statistics/attributes will be 
> available on an object until runtime (for instance it may depend on the 
> environment, the JVM in use or other factors).  In this case we cannot define 
> the statistics/attributes statically, but must instead inject them at run 
> time.
> Another use case is where new functionality may wish to store information as 
> attributes against existing configured object types (e.g. an ACL system where 
> permission information is stored at each object).



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