package net.micode.notes.gtask.data;

import android.database.Cursor;

import org.json.JSONObject;

/**
 * 应该是同步操作的基础数据类型，定义了相关指示同步操作的常量
 * 关键字：abstract
 */
public abstract class Node {
	//定义了各种用于表征同步状态的常量
    public static final int SYNC_ACTION_NONE = 0;// 本地和云端都无可更新内容（即本地和云端内容一致）

    public static final int SYNC_ACTION_ADD_REMOTE = 1;// 需要在远程云端增加内容

    public static final int SYNC_ACTION_ADD_LOCAL = 2;// 需要在本地增加内容

    public static final int SYNC_ACTION_DEL_REMOTE = 3;// 需要在远程云端删除内容

    public static final int SYNC_ACTION_DEL_LOCAL = 4;// 需要在本地删除内容

    public static final int SYNC_ACTION_UPDATE_REMOTE = 5;// 需要将本地内容更新到远程云端

    public static final int SYNC_ACTION_UPDATE_LOCAL = 6;// 需要将远程云端内容更新到本地

    public static final int SYNC_ACTION_UPDATE_CONFLICT = 7;// 同步出现冲突

    public static final int SYNC_ACTION_ERROR = 8;// 同步出现错误

    private String mGid;

    private String mName;

    private long mLastModified;//记录最后一次修改时间

    private boolean mDeleted;//表征是否被删除

    public Node() {
        mGid = null;
        mName = "";
        mLastModified = 0;
        mDeleted = false;
    }

    public abstract JSONObject getCreateAction(int actionId);

    public abstract JSONObject getUpdateAction(int actionId);

    public abstract void setContentByRemoteJSON(JSONObject js);

    public abstract void setContentByLocalJSON(JSONObject js);

    public abstract JSONObject getLocalJSONFromContent();

    public abstract int getSyncAction(Cursor c);

    public void setGid(String gid) {
        this.mGid = gid;
    }

    public void setName(String name) {
        this.mName = name;
    }

    public void setLastModified(long lastModified) {
        this.mLastModified = lastModified;
    }

    public void setDeleted(boolean deleted) {
        this.mDeleted = deleted;
    }

    public String getGid() {
        return this.mGid;
    }

    public String getName() {
        return this.mName;
    }

    public long getLastModified() {
        return this.mLastModified;
    }

    public boolean getDeleted() {
        return this.mDeleted;
    }

}

src/MiNotes-master/app/src/main/java/net/micode/notes/gtask/data/Node.java

@@ -1,101 +1,90 @@
-/*
- * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
 package net.micode.notes.gtask.data;
-
+ 
 import android.database.Cursor;
-
+ 
 import org.json.JSONObject;
-
+ 
+/**
+ * 应该是同步操作的基础数据类型，定义了相关指示同步操作的常量
+ * 关键字：abstract
+ */
 public abstract class Node {
-    public static final int SYNC_ACTION_NONE = 0;
-
-    public static final int SYNC_ACTION_ADD_REMOTE = 1;
-
-    public static final int SYNC_ACTION_ADD_LOCAL = 2;
-
-    public static final int SYNC_ACTION_DEL_REMOTE = 3;
-
-    public static final int SYNC_ACTION_DEL_LOCAL = 4;
-
-    public static final int SYNC_ACTION_UPDATE_REMOTE = 5;
-
-    public static final int SYNC_ACTION_UPDATE_LOCAL = 6;
-
-    public static final int SYNC_ACTION_UPDATE_CONFLICT = 7;
-
-    public static final int SYNC_ACTION_ERROR = 8;
-
+	//定义了各种用于表征同步状态的常量
+    public static final int SYNC_ACTION_NONE = 0;// 本地和云端都无可更新内容（即本地和云端内容一致）
+    
+    public static final int SYNC_ACTION_ADD_REMOTE = 1;// 需要在远程云端增加内容
+ 
+    public static final int SYNC_ACTION_ADD_LOCAL = 2;// 需要在本地增加内容
+ 
+    public static final int SYNC_ACTION_DEL_REMOTE = 3;// 需要在远程云端删除内容
+ 
+    public static final int SYNC_ACTION_DEL_LOCAL = 4;// 需要在本地删除内容
+ 
+    public static final int SYNC_ACTION_UPDATE_REMOTE = 5;// 需要将本地内容更新到远程云端
+ 
+    public static final int SYNC_ACTION_UPDATE_LOCAL = 6;// 需要将远程云端内容更新到本地
+ 
+    public static final int SYNC_ACTION_UPDATE_CONFLICT = 7;// 同步出现冲突
+ 
+    public static final int SYNC_ACTION_ERROR = 8;// 同步出现错误
+ 
     private String mGid;
-
+ 
     private String mName;
-
-    private long mLastModified;
-
-    private boolean mDeleted;
-
+ 
+    private long mLastModified;//记录最后一次修改时间
+ 
+    private boolean mDeleted;//表征是否被删除
+ 
     public Node() {
         mGid = null;
         mName = "";
         mLastModified = 0;
         mDeleted = false;
     }
-
+ 
     public abstract JSONObject getCreateAction(int actionId);
-
+ 
     public abstract JSONObject getUpdateAction(int actionId);
-
+ 
     public abstract void setContentByRemoteJSON(JSONObject js);
-
+ 
     public abstract void setContentByLocalJSON(JSONObject js);
-
+ 
     public abstract JSONObject getLocalJSONFromContent();
-
+ 
     public abstract int getSyncAction(Cursor c);
-
+ 
     public void setGid(String gid) {
         this.mGid = gid;
     }
-
+ 
     public void setName(String name) {
         this.mName = name;
     }
-
+ 
     public void setLastModified(long lastModified) {
         this.mLastModified = lastModified;
     }
-
+ 
     public void setDeleted(boolean deleted) {
         this.mDeleted = deleted;
     }
-
+ 
     public String getGid() {
         return this.mGid;
     }
-
+ 
     public String getName() {
         return this.mName;
     }
-
+ 
     public long getLastModified() {
         return this.mLastModified;
     }
-
+ 
     public boolean getDeleted() {
         return this.mDeleted;
     }
-
-}
+ 
+}