Data.TroubleCodeItem Decrypt(ref TroubleCodeItem item)
{
if (item.Content == null)
return null;
Data.TroubleCodeItem tc = new Data.TroubleCodeItem();
tc.Content = DecryptToString(item.Content);
if (item.Description != null)
tc.Description = DecryptToString(item.Description);
return tc;
}
bool Query(string code, string cls, ref TroubleCodeItem item)
{
Command.Prepare();
var enCode = Encrypt(code);
var enCls = Encrypt(cls);
Command.Parameters[0].Value = enCode;
Command.Parameters[1].Value = Language;
Command.Parameters[2].Value = enCls;
using (var reader = Command.ExecuteReader())
{
if (reader.Read())
{
item.Content = reader.GetFieldValue<byte[]>(0);
item.Description = reader.GetFieldValue<byte[]>(1);
return true;
}
}
return false;
}
public Data.TroubleCodeItem Get(string code, string cls)
{
StringBuilder sb = new StringBuilder();
sb.AppendFormat("{0}_{1}_{2}", code, Settings.Language, cls);
string key = sb.ToString();
if (!_troubleCodes.ContainsKey(key))
{
TroubleCodeItem item = new TroubleCodeItem();
if (!(Query(code, cls, ref item)))
throw new DatabaseException("Query trouble code fail in vehicle database!");
var tc = Decrypt(ref item);
if (tc == null)
throw new DatabaseException("Decrypt trouble code item fail!");
tc.Code = code;
_troubleCodes[key] = tc;
}
return _troubleCodes[key];
}