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qw1-notes/java/net/micode/notes/gtask/data/Node.java

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4.5 KiB

/*
* 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;
/**
* Node类是GTask同步框架中的抽象基类
* 定义了所有可同步节点的基本属性和行为
* 提供了同步操作类型常量和基本数据访问方法
*/
public abstract class Node {
/** 同步操作类型:无操作 */
public static final int SYNC_ACTION_NONE = 0;
/** 同步操作类型:添加到远程 */
public static final int SYNC_ACTION_ADD_REMOTE = 1;
/** 同步操作类型:添加到本地 */
public static final int SYNC_ACTION_ADD_LOCAL = 2;
/** 同步操作类型:删除远程数据 */
public static final int SYNC_ACTION_DEL_REMOTE = 3;
/** 同步操作类型:删除本地数据 */
public static final int SYNC_ACTION_DEL_LOCAL = 4;
/** 同步操作类型:更新远程数据 */
public static final int SYNC_ACTION_UPDATE_REMOTE = 5;
/** 同步操作类型:更新本地数据 */
public static final int SYNC_ACTION_UPDATE_LOCAL = 6;
/** 同步操作类型:更新冲突 */
public static final int SYNC_ACTION_UPDATE_CONFLICT = 7;
/** 同步操作类型:错误 */
public static final int SYNC_ACTION_ERROR = 8;
// Google Tasks中的全局唯一标识符
private String mGid;
// 节点名称
private String mName;
// 最后修改时间戳
private long mLastModified;
// 删除状态标志
private boolean mDeleted;
/**
* 构造函数,初始化节点的默认属性
*/
public Node() {
mGid = null;
mName = "";
mLastModified = 0;
mDeleted = false;
}
/**
* 获取创建操作的JSON表示
* @param actionId 操作ID
* @return 创建操作的JSON对象
*/
public abstract JSONObject getCreateAction(int actionId);
/**
* 获取更新操作的JSON表示
* @param actionId 操作ID
* @return 更新操作的JSON对象
*/
public abstract JSONObject getUpdateAction(int actionId);
/**
* 根据远程JSON数据设置节点内容
* @param js 远程获取的JSON对象
*/
public abstract void setContentByRemoteJSON(JSONObject js);
/**
* 根据本地JSON数据设置节点内容
* @param js 本地生成的JSON对象
*/
public abstract void setContentByLocalJSON(JSONObject js);
/**
* 从节点内容生成本地JSON表示
* @return 本地JSON对象
*/
public abstract JSONObject getLocalJSONFromContent();
/**
* 根据数据库游标确定同步操作类型
* @param c 数据库游标
* @return 同步操作类型常量
*/
public abstract int getSyncAction(Cursor c);
/**
* 设置Google Tasks全局唯一标识符
* @param gid Google Tasks ID
*/
public void setGid(String gid) {
this.mGid = gid;
}
/**
* 设置节点名称
* @param name 节点名称
*/
public void setName(String name) {
this.mName = name;
}
/**
* 设置最后修改时间
* @param lastModified 最后修改时间戳
*/
public void setLastModified(long lastModified) {
this.mLastModified = lastModified;
}
/**
* 设置删除状态
* @param deleted 删除状态
*/
public void setDeleted(boolean deleted) {
this.mDeleted = deleted;
}
/**
* 获取Google Tasks全局唯一标识符
* @return Google Tasks ID
*/
public String getGid() {
return this.mGid;
}
/**
* 获取节点名称
* @return 节点名称
*/
public String getName() {
return this.mName;
}
/**
* 获取最后修改时间
* @return 最后修改时间戳
*/
public long getLastModified() {
return this.mLastModified;
}
/**
* 获取删除状态
* @return 删除状态
*/
public boolean getDeleted() {
return this.mDeleted;
}
}