/// <summary>
/// 是否存在指定的表名、视图名、存储过程名
/// </summary>
/// <param name="newName"></param>
/// <param name="conn"></param>
/// <returns></returns>
public static bool Exists(string name, string type, string conn)
{
string newName = name;
string newConn = GetConn(newName, out newName, conn);
if (string.IsNullOrEmpty(conn) || (name.Contains("..") && newConn.StartsWith(name.Split('.')[0])))//已指定链接，则不切换链接
{
conn = newConn;
}
//if (DBSchema.DBScheams.Count == 0 && !string.IsNullOrEmpty(conn))
//{
// DBSchema.GetSchema(conn);
//}
if (!string.IsNullOrEmpty(newName))// && DBSchema.DBScheams.Count > 0
{
string tableHash = TableInfo.GetHashKey(newName);
if (!string.IsNullOrEmpty(conn))
{
string dbHash = ConnBean.GetHashKey(conn);
if (DBSchema.DBScheams.ContainsKey(dbHash))
{
TableInfo info = DBSchema.DBScheams[dbHash].GetTableInfo(tableHash, type);
if (info != null)
{
return(true);
}
}
else
{
DBInfo dbInfo = DBSchema.GetSchema(conn, false);
if (dbInfo != null)
{
TableInfo info = dbInfo.GetTableInfo(tableHash, type);
if (info != null)
{
return(true);
}
}
}
}
else
{
foreach (KeyValuePair <string, DBInfo> item in DBSchema.DBScheams)
{
TableInfo info = item.Value.GetTableInfo(tableHash, type);
if (info != null)
{
return(true);
}
}
}
}
return(false);
}
/// <summary>
/// 获得数据库表相关信息
/// </summary>
/// <param name="conn">指定时优先寻找。</param>
/// <param name="name">表名</param>
/// <returns></returns>
public static TableInfo GetTableInfoByName(string name, string conn)
{
if (!string.IsNullOrEmpty(name))
{
name = SqlFormat.NotKeyword(name);
string tableHash = TableInfo.GetHashKey(name);
if (!string.IsNullOrEmpty(conn))
{
string dbHash = ConnBean.GetHashKey(conn);
if (DBSchema.DBScheams.Count > 0 && DBSchema.DBScheams.ContainsKey(dbHash))
{
TableInfo info = DBSchema.DBScheams[dbHash].GetTableInfo(tableHash);
if (info != null)
{
return(info);
}
}
else
{
DBInfo dbInfo = DBSchema.GetSchema(conn, false);
if (dbInfo != null)
{
TableInfo info = dbInfo.GetTableInfo(tableHash);
if (info != null)
{
return(info);
}
}
}
}
else
{
DBInfo dbInfo = DBSchema.GetSchema(AppConfig.DB.DefaultConn, false);//优先取默认链接
if (dbInfo != null)
{
TableInfo info = dbInfo.GetTableInfo(tableHash);
if (info != null)
{
return(info);
}
}
}
foreach (KeyValuePair <string, DBInfo> item in DBSchema.DBScheams)
{
TableInfo info = item.Value.GetTableInfo(tableHash);
if (info != null)
{
return(info);
}
}
}
return(null);
}
/// <summary>
/// 是否存在指定的表名、视图名、存储过程名
/// </summary>
/// <param name="name"></param>
/// <param name="conn"></param>
/// <returns></returns>
public static bool Exists(string name, string type, string conn)
{
conn = GetConn(name, out name, conn);
if (DBSchema.DBScheams.Count == 0 && !string.IsNullOrEmpty(conn))
{
DBSchema.GetSchema(conn);
}
if (!string.IsNullOrEmpty(name) && DBSchema.DBScheams.Count > 0)
{
int tableHash = TableInfo.GetHashCode(name);
if (!string.IsNullOrEmpty(conn))
{
int dbHash = ConnBean.GetHashCode(conn);
if (DBSchema.DBScheams.ContainsKey(dbHash))
{
TableInfo info = DBSchema.DBScheams[dbHash].GetTableInfo(tableHash, type);
if (info != null)
{
return(true);
}
}
else
{
DBInfo dbInfo = DBSchema.GetSchema(conn);
if (dbInfo != null)
{
TableInfo info = dbInfo.GetTableInfo(tableHash, type);
if (info != null)
{
return(true);
}
}
}
}
else
{
foreach (KeyValuePair <int, DBInfo> item in DBSchema.DBScheams)
{
TableInfo info = item.Value.GetTableInfo(tableHash, type);
if (info != null)
{
return(true);
}
}
}
}
return(false);
}
/// <summary>
/// 获得数据库表相关信息
/// </summary>
/// <param name="conn">指定时优先寻找。</param>
/// <param name="name">表名</param>
/// <returns></returns>
public static TableInfo GetTableInfoByName(string name, string conn)
{
if (!string.IsNullOrEmpty(name))
{
name = SqlFormat.NotKeyword(name);
int tableHash = TableInfo.GetHashCode(name);
if (!string.IsNullOrEmpty(conn))
{
int dbHash = ConnBean.GetHashCode(conn);
if (DBSchema.DBScheams.Count > 0 && DBSchema.DBScheams.ContainsKey(dbHash))
{
TableInfo info = DBSchema.DBScheams[dbHash].GetTableInfo(tableHash);
if (info != null)
{
return(info);
}
}
else
{
DBInfo dbInfo = DBSchema.GetSchema(conn);
if (dbInfo != null)
{
TableInfo info = dbInfo.GetTableInfo(tableHash);
if (info != null)
{
return(info);
}
}
}
}
foreach (KeyValuePair <int, DBInfo> item in DBSchema.DBScheams)
{
TableInfo info = item.Value.GetTableInfo(tableHash);
if (info != null)
{
return(info);
}
}
}
return(null);
}
