/// <summary>
/// 测试数据源的连接。
/// </summary>
public virtual Result TestConnection()
{
Result r = new Result();
DbConnection conn = null;
try
{
using(conn = this.Provider.CreateConnection())
{
conn.Open();
}
}
catch(Exception ex)
{
r.ToFailded(ex);
}
finally
{
if(conn != null)
{
conn.TryClose();
}
}
return r;
}
/// <summary>
/// 写入可序列化的对象。
/// </summary>
/// <typeparam name="TData">可序列化对象的类型。</typeparam>
/// <param name="stream">可序列化的流。</param>
/// <param name="data">可序列化的对象。</param>
/// <returns>返回一个结果，指示序列化是否成功。</returns>
public Result Write <TData>(Stream stream, TData data)
{
Result result = new Result();
try
{
this.Writing <TData>(stream, data);
}
catch (Exception ex)
{
result.ToFailded(new System.IO.IOException("对象 {0} 序列化失败。".Fmt((data == null ? typeof(TData) : data.GetType()).FullName), ex));
}
finally
{
this.OnWriteFinish(result);
}
return(result);
}
/// <summary>
/// 读取对象。
/// </summary>
/// <param name="stream">序列化的流。</param>
/// <returns>返回序列化对象的结果。</returns>
public Result <object> Read(Stream stream)
{
Result <object> result = new Result <object>();
try
{
result.Value = this.Reading(stream);
}
catch (Exception ex)
{
result.ToFailded(new System.IO.IOException("对象反序列化失败。", ex));
}
finally
{
this.OnReadFinish(result);
}
return(result);
}
/// <summary>
/// 读取对象。
/// </summary>
/// <typeparam name="TData">可序列化对象的类型。</typeparam>
/// <param name="stream">序列化的流。</param>
/// <returns>返回序列化对象的结果。</returns>
public Result <TData> Read <TData>(Stream stream)
{
Result <TData> result = new Result <TData>();
try
{
result.Value = (TData)this.Reading <TData>(stream);
}
catch (Exception ex)
{
result.ToFailded(new System.IO.IOException("对象 {0} 反序列化失败。".Fmt(typeof(TData).FullName), ex));
}
finally
{
this.OnReadFinish(result);
}
return(result);
}
/// <summary>
/// 写入可序列化的对象。
/// </summary>
/// <typeparam name="TData">可序列化对象的类型。</typeparam>
/// <param name="data">可序列化为字符串的对象。</param>
/// <param name="encoding">自定义字符编码。</param>
/// <returns>返回一个结果，指示序列化是否成功。</returns>
public Result <string> WriteString <TData>(TData data, Encoding encoding = null)
{
Result <string> result = new Result <string>();
using (MemoryStream stream = new MemoryStream())
{
var r = this.Write <TData>(stream, data);
if (r.IsSucceed)
{
stream.Position = 0;
var v = stream.ToArray();
result.Value = (encoding ?? this.Encoding).GetString(v, 0, v.Length);
}
else
{
result.ToFailded(r.Exception);
}
}
return(result);
}
