--- a/src/main/java/jp/ac/u_ryukyu/ie/cr/jungle/transaction/node/redBlackTree/BlackTreeNode.java	Wed Jan 04 19:12:26 2017 +0900
+++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/jungle/transaction/node/redBlackTree/BlackTreeNode.java	Wed Jan 04 20:03:41 2017 +0900
@@ -113,4 +113,9 @@
         return minCount;
     }
 
+    @Override
+    protected RebuildNode replaceNode(ColorlessTreeNode parent) {
+        return null;
+    }
+
 }

--- a/src/main/java/jp/ac/u_ryukyu/ie/cr/jungle/transaction/node/redBlackTree/ColorlessTreeNode.java	Wed Jan 04 19:12:26 2017 +0900
+++ b/src/main/java/jp/ac/u_ryukyu/ie/cr/jungle/transaction/node/redBlackTree/ColorlessTreeNode.java	Wed Jan 04 20:03:41 2017 +0900
@@ -77,14 +77,13 @@
             ColorlessTreeNode newNode = rightChild.addNewChild(insertKey, insertValue);
             newNode = createNode(getAttrs(), key(), value(), left(), newNode);
             return newNode.insBalance();
-        } else
-            if (result < 0) {
-                ColorlessTreeNode newNode = leftChild.addNewChild(insertKey, insertValue);
-                newNode = createNode(getAttrs(), key(), value(), newNode, right());
-                return newNode.insBalance();
-            } else {
-                return null;
-            }
+        } else if (result < 0) {
+            ColorlessTreeNode newNode = leftChild.addNewChild(insertKey, insertValue);
+            newNode = createNode(getAttrs(), key(), value(), newNode, right());
+            return newNode.insBalance();
+        } else {
+            return null;
+        }
     }
 
     protected abstract ColorlessTreeNode insBalance();
@@ -105,23 +104,39 @@
             int result = this.compare(insertValue);
             if (result > 0) {
                 rebuildNode = right().delete(insertKey, insertValue, this, Rotate.R);
-            } else
-                if (result < 0) {
-                    rebuildNode = left().delete(insertKey, insertValue, this, Rotate.L);
-                } else {
-                    rebuildNode = replaceNode(parent);
-                    if (parent == null || rebuildNode == null)
-                        return rebuildNode;
-                    ColorlessTreeNode node = rebuildNode.getNode();
-                    if (rebuildNode.rebuild()) {
-                        // return node.deleteBalance(parent);
-                    }
-                } return null;
+            } else if (result < 0) {
+                rebuildNode = left().delete(insertKey, insertValue, this, Rotate.L);
+            } else {
+                rebuildNode = replaceNode(parent);
+            }
+            if (parent == null || rebuildNode == null)
+                return rebuildNode;
+
+            ColorlessTreeNode node = rebuildNode.getNode();
+            if (rebuildNode.rebuild()) {
+                return node.deleteBalance(parent);
+            }
+            ColorlessTreeNode newParent;
+            if (side == Rotate.L)
+                newParent = parent.createNode(parent.getAttrs(), parent.key(), parent.value(), node, parent.right());
+            else
+                newParent = parent.createNode(parent.getAttrs(), parent.key(), parent.value(), parent.left(), node);
+
+            return new RebuildNode(false, newParent);
         }
-    return null;
+        return null;
     }
 
-    protected RebuildNode replaceNode(ColorlessTreeNode parent) {
-    return null;
+
+    public RebuildNode deleteBalance(ColorlessTreeNode parent) {
+        ColorlessTreeNode newNode = null;
+        if (!isRed()) {
+
+        }
+        return null;
+    }
+
+    protected  RebuildNode replaceNode(ColorlessTreeNode parent) {
+        return null;
     }
 }