brooklyn-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From ahgittin <>
Subject [GitHub] brooklyn-server pull request #462: Inherit config default values
Date Mon, 13 Feb 2017 14:44:52 GMT
Github user ahgittin commented on a diff in the pull request:
    --- Diff: core/src/main/java/org/apache/brooklyn/core/config/
    @@ -82,9 +223,17 @@ public InheritanceMode isInherited(ConfigKey<?> key, Object
from, Object to) {
         protected <TContainer, TValue> void checkInheritanceContext(ConfigValueAtContainer<TContainer,
TValue> local, ConfigInheritanceContext context) {
             ConfigInheritance rightInheritance = ConfigInheritances.findInheritance(local,
context, this);
    -        if (!equals(rightInheritance)) 
    +        if (!isSameRootInstanceAs(rightInheritance)) {
                 throw new IllegalStateException("Low level inheritance computation error:
caller should invoke on "+rightInheritance+" "
                     + "(the inheritance at "+local+"), not "+this);
    +        }
    +    }
    +    private boolean isSameRootInstanceAs(ConfigInheritance other) {
    +        if (other==null) return false;
    +        if (this==other) return true;
    +        if (other instanceof DelegatingConfigInheritance) return isSameRootInstanceAs(
((DelegatingConfigInheritance)other).getDelegate() );
    --- End diff --
    `equals` would work but it wouldn't catch quite as many errors; it should be invoked on
the same _instance_; have added comment to explain.  you're right dropping the delegate pattern
would allow this line to be removed but i think losing the internal fields in persisted state
is worth it.

If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at or file a JIRA ticket
with INFRA.

View raw message