Code example for SortedMap

Methods: getisEmptyfirstKey

0
        return resources.get(getShardInfo(key));
    } 
 
    public S getShardInfo(byte[] key) {
        SortedMap<Long, S> tail = nodes.tailMap(algo.hash(key));
        if (tail.isEmpty()) {
            return nodes.get(nodes.firstKey());
        } 
        return tail.get(tail.firstKey());
    } 
 
    public S getShardInfo(String key) {
        return getShardInfo(SafeEncoder.encode(getKeyTag(key)));
    } 
 
    /** 
     * A key tag is a special pattern inside a key that, if preset, is the only 
     * part of the key hashed in order to select the server for this key. 
     * 
     * @see http://code.google.com/p/redis/wiki/FAQ#I