[weld-issues] [JBoss JIRA] Created: (WELD-454) Observer resolution (event qualifier handling) not in-line with spec

[Matthieu Chase Heimer (JIRA)]

Observer resolution (event qualifier handling) not in-line with spec
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                 Key: WELD-454
                 URL: https://jira.jboss.org/jira/browse/WELD-454
             Project: Weld
          Issue Type: Bug
          Components: Documentation, Events
    Affects Versions: 1.0.0.GA
         Environment: Windows XP SP3, JDK 1.6 u17, GlassFish v3
            Reporter: Matthieu Chase Heimer


Page 71 of the spec states: An event is delivered to an observer method if the observer method has *ALL* the event qualifiers. (emphasis mine). The behavior of Weld is if *any* matching (including none) qualifiers are present on the method then the method will receive the event. 

//event injection point
@Inject @Q1 @Q2 Event<Color> colorEvent;

//fire event 
colorEvent.fire(Color.BLUE);

//All events have both a Q1 and Q2 qualifier
//only the last method should be called but all four methods are called
public class ColorChangeConsumer {
    public void onAnyColorChange(@Observes Color color) {}

    public void onQ1ColorChange(@Observes @Q1 Color color) {}

    public void onQ2ColorChange(@Observes @Q2 Color color) {}

    public void onQ1QQ2ColorChange(@Observes @Q1 @Q2 Color color) {}
}

This behavior is also seen when using Event.select as seen in the docs: http://docs.jboss.org/weld/reference/1.0.1-Final/en-US/html_single/#d0e4194

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