--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/jungle/store/operations/PutAttributeOperation.java	Wed Nov 30 01:47:55 2016 +0900
@@ -0,0 +1,50 @@
+package jp.ac.u_ryukyu.ie.cr.jungle.store.operations;
+
+import java.nio.ByteBuffer;
+
+import jp.ac.u_ryukyu.ie.cr.jungle.util.Either;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.Command;
+import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.TreeNode;
+import jp.ac.u_ryukyu.ie.cr.jungle.util.Error;
+
+
+public class PutAttributeOperation implements NodeOperation
+{
+	private final String key;
+	private final ByteBuffer value;
+	
+	public PutAttributeOperation(String _key,ByteBuffer _value)
+	{
+		key = _key;
+		value = _value;
+	}
+	
+	@Override
+	public Command getCommand()
+	{
+		return Command.PUT_ATTRIBUTE;
+	}
+	
+	@Override
+	public Either<Error,TreeNode> invoke(TreeNode _target)
+	{
+		return _target.getAttributes().put(key,value);
+	}
+	@Override
+	public int getPosition()
+	{
+		return -1;
+	}
+
+	@Override
+	public String getKey()
+	{
+		return key;
+	}
+
+	@Override
+	public ByteBuffer getValue()
+	{
+		return value;
+	}
+}
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