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From Randgalt <...@git.apache.org>
Subject [GitHub] curator pull request: Major re-work of Watcher wrappers
Date Mon, 08 Feb 2016 17:37:03 GMT
Github user Randgalt commented on a diff in the pull request:

    https://github.com/apache/curator/pull/131#discussion_r52199629
  
    --- Diff: curator-framework/src/main/java/org/apache/curator/framework/imps/NamespaceWatcher.java
---
    @@ -75,4 +89,53 @@ else if ( curatorWatcher != null )
                 }
             }
         }
    +
    +    // specialized equals()/hashCode() that makes this instance equal to the actual watcher
    +
    +    @Override
    +    public boolean equals(Object o)
    +    {
    +        if ( this == o )
    +        {
    +            return true;
    +        }
    +        if ( o == null )
    +        {
    +            return false;
    +        }
    +
    +        if ( getClass() == o.getClass() )
    +        {
    +            NamespaceWatcher watcher = (NamespaceWatcher)o;
    +
    +            if ( !unfixedPath.equals(watcher.getUnfixedPath()) )
    +            {
    +                return false;
    +            }
    +
    +            //noinspection SimplifiableIfStatement
    +            if ( actualWatcher != null ? !actualWatcher.equals(watcher.actualWatcher)
: watcher.actualWatcher != null )
    +            {
    +                return false;
    +            }
    +            return curatorWatcher != null ? curatorWatcher.equals(watcher.curatorWatcher)
: watcher.curatorWatcher == null;
    +        }
    +
    +        //noinspection SimplifiableIfStatement
    +        if ( Watcher.class.isAssignableFrom(o.getClass()) )
    +        {
    +            return actualWatcher == o;
    +        }
    +
    +        return false;
    +    }
    +
    +    @Override
    +    public int hashCode()
    +    {
    +        int result = actualWatcher != null ? actualWatcher.hashCode() : 0;
    +        result = 31 * result + unfixedPath.hashCode();
    +        result = 31 * result + (curatorWatcher != null ? curatorWatcher.hashCode() :
0);
    +        return result;
    --- End diff --
    
    It needs to match the watcher and the path - that's how ZooKeeper stores it.


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