protected byte[] ReadFile(Guid fileID, Guid lockID, string clientFileName, int startPos, int bufferCount, out string error)
{
RemoteFileStorageService provider = new RemoteFileStorageService();
ReadFileParameter para = new ReadFileParameter();
ReadFileItemData item = new ReadFileItemData();
para.InputData.Add(item);
item.PhysicalFileID = fileID;
item.ClientFileName = clientFileName;
item.LockID = lockID;
item.Position = startPos;
item.ReadCount = bufferCount;
ReadFileResult result = provider.ReadFile(para);
error = null;
if (result != null)
{
if (result.Succeed)
{
if (result.ExecuteResult.Count > 0)
{
ReadFileResultItemData itemResult = result.ExecuteResult[0];
if (itemResult != null)
{
return(itemResult.ReadData);
}
}
error = string.Format("不存在ID为:{0}的文件.", fileID);
}
else
{
error = result.InnerException.ErrorMessage;
}
}
else
{
error = "读取文件失败.";
}
return(null);
}
protected ReadFileResultItemData ReadFileItem(ReadFileItemData itemParam, Guid userID, DbTransaction trans)
{
ReadFileResultItemData item = new ReadFileResultItemData();
IRecordLockedDataProvider dataProvider = RecordLockedDataProvider;
if (dataProvider != null)
{
RecordLockedManager.ServiceProxy.SetDataProvider(dataProvider);
}
if (itemParam.LockID != Guid.Empty)
{
RecordLockedManager.UpdateLockInfo(itemParam.LockID, DateTime.UtcNow.Add(RecordLocked.DefaultExpireTimeSpan));
}
string extendsionName = string.Empty;
if (!string.IsNullOrEmpty(itemParam.ClientFileName))
{
extendsionName = Path.GetExtension(itemParam.ClientFileName);
}
item.ReadData = FileStorageManager.ReadFile(this.DataProvider, itemParam.PhysicalFileID, extendsionName, itemParam.Position, itemParam.ReadCount);
return(item);
}