多平台数据存储插件IBoxDB学习

记录多个物体的不同属性,主要是属性不同意,使用SQLite数据库的话,不同属性的物体就需要建不同的表,只能使用键值对类型来存储。网上查了查,在unity本地可以使用的noSQL数据库寥寥无几(如果有朋友知道,可以推荐给我啊),而这个IBoxDB多平台运行,是NoSQL类型的,正好满足要求。给出官方网址链接。,还有这位朋友的注意事项。

IBOXDB下载地址

代码中注释很清楚,就不啰嗦了。先是简单的工具类

using UnityEngine;
using System.Collections;
using iBoxDB.LocalServer;
using System.Collections.Generic;
using System;

/// 
/// 实现一个Save和Read方法 
/// 
public class MyIBoxDB
{
    public const string TABLE_BED_SCENE = "TABLE_BED_SCENE";
    private static MyIBoxDB _Instance;

    private DB db = null;
    private DB.AutoBox autoBox = null;//该对象可以进行CRUD操作,使用完毕不需要释放对象

    private MyIBoxDB()
    {
        if (db == null)
        {
            DB.Root(Application.persistentDataPath);//数据库存储路径
            db = new DB(1);//数据库地址,或者说ID                     
            db.GetConfig().EnsureTable(TABLE_BED_SCENE, "ObjectName(20)");//先建表后使用,并且表的主键为ObjectName,长度20
        }

        if (autoBox == null)
            autoBox = db.Open();
    }

    public static MyIBoxDB GetInstance()
    {
        if (_Instance == null)
            _Instance = new MyIBoxDB();

        return _Instance;
    }

    /// 
    /// 删除数据库,IBoxDB中没有直接删除一个表的接口,所以这个方法显得格外亲切~
    /// 注意:删除数据库之前要关闭该数据库
    /// 
    /// 数据库地址
    public void DeleteDataBase(int address)
    {
        iBoxDB.DBDebug.DDebug.DeleteDBFiles(address);
    }

    /// 
    /// 存储一个列表的数据
    /// 
    /// 向哪个表存数据
    /// 要存储的数据集合
    public void Save(string tableName, List data)
    {
        IBox iBox = _Instance.GetBox();
        Binder binder = iBox.Bind(tableName);//绑定表

        foreach (BaseObject ob in data)
        {
            //如果表中之前有过该记录,则Update;没有则Insert
            if (_Instance.autoBox.SelectCount("from " + tableName + " where ObjectName == ?", ob.ObjectName) <= 0)
                binder.Insert(ob);
            else
                binder.Update(ob);
        }

        iBox.Commit();
        iBox.Dispose();
    }

    /// 
    /// 存储一个对象的数据
    /// 
    /// 向哪个表存数据
    /// 数据
    public void Save(string tableName, BaseObject ob)
    {
        if (_Instance.autoBox.SelectCount("from " + tableName + " where ObjectName == ?", ob.ObjectName) <= 0)
            _Instance.autoBox.Insert(tableName, ob);
        else
            _Instance.autoBox.Update(tableName, ob);
    }

    /// 
    /// 获取数据
    /// 
    /// QL语句
    /// QL参数
    /// 
    public IBEnumerable Get(string QL, string param)
    {
        return _Instance.autoBox.Select(QL, param);
    }

    /// 
    /// IBox可以进行数据库的事务操作
    /// 
    private IBox GetBox()
    {
        return _Instance.autoBox.Cube();
    }
}

//基本数据类型
public class BaseObject : Dictionary
{
    public string ObjectName
    {
        get
        {
            return (string)base["ObjectName"];
        }
        set
        {
            if (value.Length > 20)
            {
                throw new ArgumentOutOfRangeException();
            }
            base["ObjectName"] = value;
        }
    }
}

然后是测试类。

using UnityEngine;
using System.Collections;
using iBoxDB.LocalServer;
using System.Collections.Generic;

//Insert必须表里没有相同ID的记录;Update必须表里有相同ID的记录
public class Test : MonoBehaviour
{
    void Start ()
    {
        //TestUsingAutoBox();
        TestUsingBox();

        ShowResult();
    }

    private void TestUsingBox()
    {
        List data = new List();

        BaseObject item = new BaseObject() { ObjectName = "Player8" };
        item["position_x"] = 2;
        item["rotation_x"] = 34.2f;
        item["enable"] = false;
        item["tag"] = "item1_tag";

        BaseObject item2 = new BaseObject() { ObjectName = "Player9" };
        item2["position_x"] = 23;
        item2["rotation_x"] = 45.2f;
        item2["enable"] = false;
        item2["tag"] = "item1_tag";

        data.Add(item);
        data.Add(item2);

        MyIBoxDB.GetInstance().Save(MyIBoxDB.TABLE_BED_SCENE, data);
    }

    private void TestUsingAutoBox()
    {
        BaseObject item = new BaseObject() { ObjectName = "Player6" };
        item["position_x"] = 34;
        item["rotation_x"] = 89.5f;
        item["enable"] = true;
        item["tag"] = "item1_tag";

        MyIBoxDB.GetInstance().Save(MyIBoxDB.TABLE_BED_SCENE, item);
    }

    private void ShowResult()
    {
        foreach (BaseObject mItem in MyIBoxDB.GetInstance().Get("from " + MyIBoxDB.TABLE_BED_SCENE + " where ObjectName == ?", "Player8"))//只支持传参
        {
            int position_x = (int)mItem["position_x"];
            float rotation_x = (float)mItem["rotation_x"];
            bool enable = (bool)mItem["enable"];
            string tag = mItem["tag"] as string;

            string s = "position_x = " + position_x + "  rotation_x = " + rotation_x + "  enable = " + enable + "  tag = " + tag;
            print(s);
        }
    }
}

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