--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/alice/jungle/operations/NetworkAppendChildAtOperation.java	Tue Nov 26 06:43:10 2013 +0900
@@ -0,0 +1,54 @@
+package alice.jungle.operations;
+
+import java.nio.ByteBuffer;
+
+import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.Command;
+import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.operations.NodeOperation;
+import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.store.trasnformer.EditableNode;
+import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Either;
+import jp.ac.u_ryukyu.ie.cr.shoshi.jungle.util.Error;
+import alice.jungle.datasegment.transformer.NetworkAppendChildAt;
+
+import org.msgpack.annotation.Message;
+
+
+@Message
+public class NetworkAppendChildAtOperation implements NodeOperation {
+	
+	/* MessagePack cannot handle final.*/
+	//	private final int pos;
+	private int pos;
+	
+	/* Position -1 represent root position. */
+	public NetworkAppendChildAtOperation() { pos = -2; }
+	
+	public NetworkAppendChildAtOperation(int _pos) {
+		pos = _pos;
+	}
+	
+	@Override
+	public Command getCommand() {
+		return Command.APPEND_CHILD;
+	}
+	
+	@Override
+	public <T extends EditableNode<T>> Either<Error, T> invoke(T _target) {
+		NetworkAppendChildAt appendChildAt = new NetworkAppendChildAt(pos);
+		return appendChildAt.edit(_target);
+	}
+
+	@Override
+	public int getPosition() {
+		return pos;
+	}
+
+	@Override
+	public String getKey() {
+		return null;
+	}
+
+	@Override
+	public ByteBuffer getValue() {
+		return null;
+	}
+}