/// <summary>更新SyncFile</summary>
/// <param name="conn">数据库连接</param>
/// <param name="syncFile">文件集信息</param>
/// <returns>操作是否成功</returns>
public static bool UpdateSyncFile(SQLiteConnection conn, SyncFile syncFile)
{
if (conn == null || syncFile == null)
{
return(false);
}
int countLinkedFile = syncFile.ListLinkedFile.Count;
System.Diagnostics.Debug.Assert(countLinkedFile >= 2);
try
{
//更新SyncFile表
List <string> sqls = new List <string>(countLinkedFile + 1);
string sqlSyncFile = string.Format(
"UPDATE SyncFile SET FileSetName = '{0}', LastFileHash = '{1}', LastUpdatePath = '{2}', LastUpdateDate = {3}, UpdateTimes = {4} WHERE ID = {5}",
syncFile.FileSetName, syncFile.LastFileHash, syncFile.LastUpdatePath, syncFile.LastUpdateDate.ToBinary(),
syncFile.UpdateTimes, syncFile.ID);
sqls.Add(sqlSyncFile);
//删除LinkedFile表中的过时信息
var dtLinkedFile = GetDataTable("LinkedFile", conn);
List <string> listFullName = syncFile.ListLinkedFile.Select(file => file.FullName).ToList();
List <int> listDel = (from dr in dtLinkedFile.AsEnumerable()
let id_SyncFile = Convert.ToInt32(dr["ID_SyncFile"])
let fullPath = dr["FilePath"] + "\\" + dr["FileName"]
where id_SyncFile == syncFile.ID && !listFullName.Contains(fullPath)
select Convert.ToInt32(dr["ID"])).ToList();
sqls.AddRange(listDel.Select(idDel => string.Format("DELETE FROM LinkedFile WHERE ID = {0}", idDel)));
//更新LinkedFile表
for (int i = 0; i < countLinkedFile; i++)
{
LinkedFile linkedFile = syncFile.ListLinkedFile[i];
string sql = (from dr in dtLinkedFile.AsEnumerable()
let id = Convert.ToInt32(dr["ID"])
let id_SyncFile = Convert.ToInt32(dr["ID_SyncFile"])
let fullPath = dr["FilePath"] + "\\" + dr["FileName"]
where id_SyncFile == linkedFile.ID_SyncFile && fullPath.Equals(linkedFile.FullName)
select string.Format(
"UPDATE LinkedFile SET FileName = '{0}', IsLastNewest = {1}, FilePath = '{2}', LastSyncDate = {3} WHERE ID = {4}",
linkedFile.FileName, linkedFile.IsLastNewest, linkedFile.FilePath,
linkedFile.LastSyncDate.ToBinary(), id)).FirstOrDefault()
?? string.Format(
"INSERT INTO LinkedFile (ID_SyncFile, FileName, IsLastNewest, FilePath, LastSyncDate) VALUES ({0}, '{1}', {2}, '{3}', {4})",
linkedFile.ID_SyncFile, linkedFile.FileName, linkedFile.IsLastNewest, linkedFile.FilePath,
linkedFile.LastSyncDate.ToBinary());
sqls.Add(sql);
}
//事务执行
return(ExecuteTransSQL(sqls, conn));
}
catch (Exception ex)
{
LogHelper.WriteErrLog("UpdateSyncFile", ex);
return(false);
}
finally
{
conn.Close();
}
}
/// <summary>刷新文件集信息</summary>
/// <param name="syncFile">文件集</param>
/// <param name="latestPath">最新文件路径</param>
/// <param name="updateTime">最近更新时间</param>
/// <param name="newUpdateTimes">新增更新次数（默认值为0）</param>
/// <returns>操作是否成功</returns>
public static bool FreshSyncFile(ref SyncFile syncFile, string latestPath, DateTime updateTime, int newUpdateTimes = 0)
{
if (syncFile == null || syncFile.ListLinkedFile == null || syncFile.ListLinkedFile.Count < 2)
{
return(false);
}
if (!File.Exists(latestPath))
{
return(false);
}
FileInfo fi = new FileInfo(latestPath);
syncFile.LastFileHash = fi.GetHashCode().ToString();
syncFile.LastUpdatePath = latestPath;
syncFile.LastUpdateDate = updateTime;
syncFile.UpdateTimes += newUpdateTimes;
int count = syncFile.ListLinkedFile.Count;
for (int i = 0; i < count; i++)
{
LinkedFile file = syncFile.ListLinkedFile[i];
file.IsLastNewest = file.FilePath.Equals(latestPath) ? 1 : 0;
file.LastSyncDate = updateTime;
}
return(true);
}
/// <summary>创建SyncFile类</summary>
/// <param name="fileSetName">文件集名称</param>
/// <param name="listFileInfo">文件链接列表</param>
/// <param name="syncFile">[out]SyncFile类</param>
/// <param name="id">文件集序号（默认值为-1）</param>
/// <returns>操作是否成功</returns>
public static bool CreateSyncFile(string fileSetName, List <FileInfoLite> listFileInfo, out SyncFile syncFile, int id = -1)
{
syncFile = null;
if (string.IsNullOrWhiteSpace(fileSetName) || listFileInfo == null || listFileInfo.Count < 2)
{
return(false);
}
List <LinkedFile> list = new List <LinkedFile>(listFileInfo.Count);
list.AddRange(
listFileInfo.Select(
fileInfoLite =>
new LinkedFile(-1, id, fileInfoLite.FileName, false, fileInfoLite.FilePath,
fileInfoLite.LastWriteTime)));
var newestDate = list.Max(f => f.LastSyncDate);
string newestPath = null;
string newestHash = null;
foreach (LinkedFile file in list)
{
if (file.LastSyncDate == newestDate)
{
file.IsLastNewest = 1;
newestPath = file.FullName;
newestHash = new FileInfo(newestPath).GetHashCode().ToString();
break;
}
}
syncFile = new SyncFile(id, fileSetName, newestHash, newestPath, DateTime.Now, list, 0);
return(true);
}
/// <summary>添加一条SyncFile数据</summary>
/// <param name="conn">数据库连接</param>
/// <param name="syncFile">文件集信息</param>
/// <returns>操作是否成功</returns>
public static bool InsertSyncFile(SQLiteConnection conn, SyncFile syncFile)
{
if (conn == null || syncFile == null)
{
return(false);
}
int countLinkedFile = syncFile.ListLinkedFile.Count;
System.Diagnostics.Debug.Assert(countLinkedFile >= 2);
try
{
var dtSyncFile = GetDataTable("SyncFile", conn);
if (HaveIdInDt(dtSyncFile, syncFile.ID))
{
return(UpdateSyncFile(conn, syncFile));
}
//添加SyncFile表数据
List <string> sqls = new List <string>(countLinkedFile + 1);
int id = 1;
if (dtSyncFile.Rows.Count == 0)
{
SetAutoIncr(conn, "SyncFile");
}
else
{
id = GetLastIdInDt(dtSyncFile) + 1;
}
string sqlSyncFile = string.Format(
"INSERT INTO SyncFile (ID, FileSetName, LastFileHash, LastUpdatePath, LastUpdateDate, UpdateTimes) VALUES ({0}, '{1}', '{2}', '{3}', {4}, {5})",
id, syncFile.FileSetName, syncFile.LastFileHash, syncFile.LastUpdatePath, syncFile.LastUpdateDate.ToBinary(),
syncFile.UpdateTimes);
sqls.Add(sqlSyncFile);
//添加LinkedFile表数据
for (int i = 0; i < countLinkedFile; i++)
{
LinkedFile linkedFile = syncFile.ListLinkedFile[i];
string sql = string.Format(
"INSERT INTO LinkedFile (ID_SyncFile, FileName, IsLastNewest, FilePath, LastSyncDate) VALUES ({0}, '{1}', {2}, '{3}', {4})",
id, linkedFile.FileName, linkedFile.IsLastNewest, linkedFile.FilePath, linkedFile.LastSyncDate.ToBinary());
sqls.Add(sql);
}
//事务执行
return(ExecuteTransSQL(sqls, conn));
}
catch (Exception ex)
{
LogHelper.WriteErrLog("InsertSyncFile", ex);
return(false);
}
finally
{
conn.Close();
}
}
/// <summary>从数据库得到文件集信息</summary>
/// <param name="conn">数据库连接</param>
/// <param name="id">文件集序号</param>
/// <param name="syncFile">[out]文件集信息</param>
/// <returns>成功读取到文件,返回true;出现错误或未读取到文件,均返回false</returns>
public static bool GetSyncFile(SQLiteConnection conn, int id, out SyncFile syncFile)
{
syncFile = null;
if (conn == null)
{
return(false);
}
try
{
//得到文件集在数据库中的ID
var dtSyncFile = GetDataTable("SyncFile", conn);
int countSyncFile = dtSyncFile.Rows.Count;
if (countSyncFile == 0)
{
return(false);
}
int index = -1, id_SyncFile = 0;
for (int i = 0; i < countSyncFile; i++)
{
DataRow dr = dtSyncFile.Rows[i];
if (Convert.ToInt32(dr["ID"]) == id)
{
index = i;
id_SyncFile = Convert.ToInt32(dr["ID"]);
break;
}
}
if (index == -1)
{
return(false);
}
//得到文件集管理的文件信息列表
var dtLinkedFile = GetDataTable("LinkedFile", conn);
List <LinkedFile> list =
(from dr in dtLinkedFile.AsEnumerable()
where Convert.ToInt32(dr["ID_SyncFile"]) == id_SyncFile
select new LinkedFile(dr)).ToList();
if (list.Count < 2)
{
throw new Exception("文件集管理的文件数量小于2！");
}
//构建文件集信息
DataRow drSyncFile = dtSyncFile.Rows[index];
syncFile = new SyncFile(Convert.ToInt32(drSyncFile["ID"]),
drSyncFile["FileSetName"].ToString(),
drSyncFile["LastFileHash"].ToString(),
drSyncFile["LastUpdatePath"].ToString(),
DateTime.FromBinary(Convert.ToInt64(drSyncFile["LastUpdateDate"])),
list,
Convert.ToInt32(drSyncFile["UpdateTimes"]));
}
catch (Exception ex)
{
LogHelper.WriteErrLog("UpdateSyncFile", ex);
return(false);
}
finally
{
conn.Close();
}
return(true);
}
