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/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.micode.notes.gtask.data;
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import android.database.Cursor;
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import org.json.JSONObject;
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/**
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* Node类是抽象类，
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* 声明了九种数据同步场景变量，
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* 还声明了一些同步操作方法
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*/
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public abstract class Node {
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public static final int SYNC_ACTION_NONE = 0; //无同步操作
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public static final int SYNC_ACTION_ADD_REMOTE = 1; //远程添加操作
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public static final int SYNC_ACTION_ADD_LOCAL = 2; //本地添加操作
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public static final int SYNC_ACTION_DEL_REMOTE = 3; //远程删除操作
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public static final int SYNC_ACTION_DEL_LOCAL = 4; //本地删除操作
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public static final int SYNC_ACTION_UPDATE_REMOTE = 5; //远程更新操作
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public static final int SYNC_ACTION_UPDATE_LOCAL = 6; //本地更新操作
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public static final int SYNC_ACTION_UPDATE_CONFLICT = 7; //更新冲突
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public static final int SYNC_ACTION_ERROR = 8; //同步出错
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private String mGid;
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private String mName;
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private long mLastModified;
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private boolean mDeleted;
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//无参构造法，创建Node对象时无需传入任何参数
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public Node() {
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mGid = null; //常由云端生成
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mName = ""; //不初始化为null：避免后续调用mName.length等方法时触发空指针异常
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mLastModified = 0;
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mDeleted = false;
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}
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//JSONObject是JSON实例的抽象类，生成同步创建操作JSON数据，返回操作ID
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public abstract JSONObject getCreateAction(int actionId);
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//生成同步更新操作的JSON数据，返回操作ID
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public abstract JSONObject getUpdateAction(int actionId);
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//这是一个方法，根据远程JSON数据设置内容（远程数据同步到本地）（具体操作）
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public abstract void setContentByRemoteJSON(JSONObject js);
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//这是一个方法，根据本地JSON数据设置内容（本地数据处理）（具体操作）
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public abstract void setContentByLocalJSON(JSONObject js);
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//将本地内容转换成JSON数据,同步到远程
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public abstract JSONObject getLocalJSONFromContent();
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//通过游标获取同步操作类型，在前面声明为类型变量0-8
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public abstract int getSyncAction(Cursor c);
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public void setGid(String gid) {
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this.mGid = gid;
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}
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public void setName(String name) {
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this.mName = name;
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}
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public void setLastModified(long lastModified) {
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this.mLastModified = lastModified;
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}
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public void setDeleted(boolean deleted) {
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this.mDeleted = deleted;
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}
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public String getGid() {
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return this.mGid;
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}
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public String getName() {
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return this.mName;
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}
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public long getLastModified() {
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return this.mLastModified;
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}
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public boolean getDeleted() {
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return this.mDeleted;
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}
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}
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