package com.lambdaworks.redis.output;
import java.nio.ByteBuffer;
import com.lambdaworks.redis.StreamScanCursor;
import com.lambdaworks.redis.codec.RedisCodec;
/**
* Streaming-Output of Key Value Pairs. Returns the count of all Key-Value pairs (including null).
*
* @param <K> Key type.
* @param <V> Value type.
*
* @author <a href="mailto:mpaluch@paluch.biz">Mark Paluch</a>
*/
public class KeyValueScanStreamingOutput<K, V> extends ScanOutput<K, V, StreamScanCursor> {
private K key;
private KeyValueStreamingChannel<K, V> channel;
public KeyValueScanStreamingOutput(RedisCodec<K, V> codec, KeyValueStreamingChannel<K, V> channel) {
super(codec, new StreamScanCursor());
this.channel = channel;
}
@Override
protected void setOutput(ByteBuffer bytes) {
if (key == null) {
key = codec.decodeKey(bytes);
return;
}
V value = (bytes == null) ? null : codec.decodeValue(bytes);
channel.onKeyValue(key, value);
output.setCount(output.getCount() + 1);
key = null;
}
}