/// <summary>
/// 通过数据读取器生成实体类
/// </summary>
/// <param name="rdr"></param>
/// <returns></returns>
private static MailItemEntity GetEntityFromrdr(NullableDataReader rdr)
{
MailItemEntity info = new MailItemEntity();
info.MailListId = rdr.GetInt32("MailListId");
info.SubscriptionItemId = rdr.GetInt32("SubscriptionItemId");
return(info);
}
/// <summary>
/// 获取实体（异步方式）
/// </summary>
/// <param name="strWhere">参数化查询条件(例如: and Name = @Name )</param>
/// <param name="dict">参数的名/值集合</param>
/// <returns></returns>
public virtual async Task <MailItemEntity> GetEntityAsync(string strWhere, Dictionary <string, object> dict = null)
{
MailItemEntity obj = null;
string strSQL = "select top 1 * from MailItem where 1=1 " + strWhere;
using (NullableDataReader reader = await Task.Run(() => _DB.GetDataReader(strSQL, dict)))
{
if (reader.Read())
{
obj = GetEntityFromrdr(reader);
}
}
return(obj);
}
/// <summary>
/// 更新一条记录
/// </summary>
/// <param name="entity">实体模型</param>
/// <returns></returns>
public virtual bool Update(MailItemEntity entity)
{
Dictionary <string, object> dict = new Dictionary <string, object>();
GetParameters(entity, dict);
string strSQL = "Update MailItem SET " +
" WHERE " +
"MailListId = @MailListId" +
" AND " +
"SubscriptionItemId = @SubscriptionItemId";
return(_DB.ExeSQLResult(strSQL, dict));
}
/// <summary>
/// 更新一条记录（异步方式）
/// </summary>
/// <param name="entity">实体模型</param>
/// <returns></returns>
public virtual async Task <bool> UpdateAsync(MailItemEntity entity)
{
Dictionary <string, object> dict = new Dictionary <string, object>();
GetParameters(entity, dict);
string strSQL = "Update MailItem SET " +
" WHERE " +
"MailListId = @MailListId" +
" AND " +
"SubscriptionItemId = @SubscriptionItemId";
return(await Task.Run(() => _DB.ExeSQLResult(strSQL, dict)));
}
/// <summary>
/// 增加一条记录（异步方式）
/// </summary>
/// <param name="entity">实体模型</param>
/// <returns></returns>
public virtual async Task <bool> AddAsync(MailItemEntity entity)
{
Dictionary <string, object> dict = new Dictionary <string, object>();
GetParameters(entity, dict);
string strSQL = "insert into MailItem (" +
"MailListId," +
"SubscriptionItemId) " +
"values(" +
"@MailListId," +
"@SubscriptionItemId)";
return(await Task.Run(() => _DB.ExeSQLResult(strSQL, dict)));
}
/// <summary>
/// 增加一条记录
/// </summary>
/// <param name="entity">实体模型</param>
/// <returns></returns>
public virtual bool Add(MailItemEntity entity)
{
Dictionary <string, object> dict = new Dictionary <string, object>();
GetParameters(entity, dict);
string strSQL = "insert into MailItem (" +
"MailListId," +
"SubscriptionItemId) " +
"values(" +
"@MailListId," +
"@SubscriptionItemId)";
return(_DB.ExeSQLResult(strSQL, dict));
}
/// <summary>
/// 增加一条记录，返回新的ID号。需要有一个单一主键，并且开启有标识符属性（异步方式）
/// </summary>
/// <param name="entity">实体模型</param>
/// <returns></returns>
public virtual async Task <int> InsertAsync(MailItemEntity entity)
{
Dictionary <string, object> dict = new Dictionary <string, object>();
GetParameters(entity, dict);
string strSQL = "insert into MailItem (" +
"MailListId," +
"SubscriptionItemId) " +
"values(" +
"@MailListId," +
"@SubscriptionItemId)";
if (await Task.Run(() => _DB.ExeSQLResult(strSQL, dict)))
{
return(DataConverter.CLng(entity.MailListId));
}
return(-1);
}
/// <summary>
/// 把实体类转换成键/值对集合
/// </summary>
/// <param name="entity"></param>
/// <param name="dict"></param>
private static void GetParameters(MailItemEntity entity, Dictionary <string, object> dict)
{
dict.Add("MailListId", entity.MailListId);
dict.Add("SubscriptionItemId", entity.SubscriptionItemId);
}
/// <summary>
/// 增加或更新一条记录（异步方式）
/// </summary>
/// <param name="entity">实体模型</param>
/// <param name="IsSave">是否增加</param>
/// <returns></returns>
public virtual async Task <bool> AddOrUpdateAsync(MailItemEntity entity, bool IsSave)
{
return(IsSave ? await AddAsync(entity) : await UpdateAsync(entity));
}
/// <summary>
/// 增加或更新一条记录
/// </summary>
/// <param name="entity">实体模型</param>
/// <param name="IsSave">是否增加</param>
/// <returns></returns>
public virtual bool AddOrUpdate(MailItemEntity entity, bool IsSave)
{
return(IsSave ? Add(entity) : Update(entity));
}
