/// <summary>
/// 更新记录
/// </summary>
/// <param name="tp">对象类型</param>
/// <param name="obj">对象</param>
/// <param name="_PrimaryKeyValue">主键值</param>
/// <returns></returns>
public int Update(Type tp, object obj, int _PrimaryKeyValue)
{
string WrongMessage = null;
string[] arrayID;
object[] arrayValue;
SqlDbType[] arrayType;
int ret = 0;
DataDevanning(tp, obj, out arrayID, out arrayValue, out arrayType);
WrongMessage = _DBLInit.UpdateDate(arrayID, arrayValue, arrayType, _TableName, _PrimaryKey);
Log.WriteInfo("更新数据，表：" + _TableName + "，流水号：" + _PrimaryKeyValue);
if (string.IsNullOrEmpty(WrongMessage))
{
//更新对应的缓存
string key = tp.ToString() + "." + _PrimaryKeyValue;
MyCache.Caching cache = new MyCache.Caching();
cache.Add(key, obj, true); //重置缓存
return(ret);
}
MyORM.Log.WriteError(WrongMessage);
ret = -1;
return(ret);
}
/// <summary>
/// 根据主键查询
/// </summary>
/// <typeparam name="T">T</typeparam>
/// <param name="obj">对象</param>
/// <param name="tid">主键值</param>
/// <returns></returns>
public T Get <T>(object obj, int tid) where T : new()
{
//从缓存中读取该主键值的数据是否存在()
var tp = obj.GetType();
string key = tp.ToString() + "." + tid;
MyCache.Caching cache = new MyCache.Caching();
T v = new T();
if (cache.IsCache(key))
{
v = (T)cache.Get(key);
}
else
{
string WrongMessage = null;
string SelectSql = CreateSelectSQL(typeof(T), obj, "this.tid=" + tid, 0);
var dt = _DBLInit.GetDataTable(SelectSql, out WrongMessage);
if (WrongMessage == null)
{
List <T> myList = new List <T>(dt.Rows.Count);
int i = 0;
foreach (DataRow dr in dt.Rows)
{
object objClass = Activator.CreateInstance(typeof(T), null);
myList.Add((T)DataPacking(typeof(T), objClass, dr));
i++;
}
if (myList.Count == 1)
{
v = myList[0];
cache.Add(key, v);
}
}
else
{
//ClassCommon.LogError(String.Format("{0}|{1}", SelectSql, WrongMessage));
}
}
return(v);
}
/// <summary>
/// 删除记录
/// </summary>
/// <param name="_PrimaryKeyValue">主键值</param>
/// <param name="tp">对象类型</param>
/// <returns></returns>
public int Remove(int _PrimaryKeyValue, Type tp)
{
string WrongMessage = null;
string sql = String.Format("delete from {0} where {1}={2}", _TableName, _PrimaryKey, _PrimaryKeyValue);
int ret = _DBLInit.ProcessSql(sql, emOperationType.delete, out WrongMessage);
Log.WriteInfo("删除数据，表：" + _TableName + "，流水号：" + _PrimaryKeyValue);
if (string.IsNullOrEmpty(WrongMessage))
{
//删除缓存
string key = tp.ToString() + "." + _PrimaryKeyValue;
MyCache.Caching cache = new MyCache.Caching();
cache.Remove(key);
return(ret);
}
ret = -1;
MyORM.Log.WriteError(WrongMessage);
return(ret);
}
/// <summary>
/// 生成查询语句
/// </summary>
/// <param name="tp">实例的类型</param>
/// <param name="obj">实例</param>
/// <param name="Qual">查询条件</param>
/// <param name="top">返回的记录数</param>
/// <returns></returns>
public string CreateSelectSQL(Type tp, object obj, string Qual, int top)
{
//缓存SQL语句
string key = tp.ToString();
string keyTableName = tp.ToString() + "TableName";
MyCache.Caching cache = new MyCache.Caching();
string sql = "select ";
string _TableName = this._TableName;
if (!cache.IsCache(key))
{
int tidflag = 0;
string _PrimaryKey = "";
FieldInfo[] fis = tp.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
if (top > 0)
{
sql += String.Format(" top ({0}) ", top);
}
for (int i = 0; i < fis.Length; i++)
{
if (String.Compare(fis[i].Name, "_TableName", false) == 0)
{
//_TableName = fis[i].GetValue(obj).ToString();
}
else if (String.Compare(fis[i].Name, "_PrimaryKey", false) == 0)
{
_PrimaryKey = fis[i].GetValue(obj).ToString();
}
else if (String.Compare(fis[i].Name, "returnDt", false) == 0)
{
}
else if (String.Compare(fis[i].Name, "_DBLInit", false) != 0 && String.Compare(fis[i].Name, "_JoinList", false) != 0)
{
if (fis[i].Name == "tid")
{
if (tidflag == 0)
{
sql += String.Format("this.{0},", fis[i].Name);
tidflag = 1;
}
}
else
{
sql += String.Format("this.{0},", fis[i].Name);
}
}
}
sql = sql.Substring(0, sql.Length - 1);
sql = sql.Replace("this", _TableName);
sql += " FROM " + _TableName;
cache.Add(key, sql);
cache.Add(keyTableName, _TableName);
}
else
{
sql = cache.Get(key).ToString();
_TableName = cache.Get(keyTableName).ToString();
}
if (string.IsNullOrEmpty(Qual))
{
return(sql);
}
Qual = Qual.Replace("this", _TableName);
sql += " WHERE " + Qual;
return(sql);
}
