public T Get <T>(SqlDBCredentials credentials, SoftwareVersion version = null)
{
T retVal = default(T);
CredentialLookup lkp;
if (_credentialLookup.TryGetValue(typeof(T), out lkp))
{
if (version == null)
{
version = new SoftwareVersion();
}
String key = credentials.ToParsableString() + ";DBVER=" + version.ToString();
if (lkp.ContainsKey(key))
{
retVal = (T)lkp[key];
}
}
return(retVal);
}
public Object GetByType(Type t, SqlDBCredentials credentials, SoftwareVersion version = null)
{
Object retVal = null;
CredentialLookup lkp;
if (_credentialLookup.TryGetValue(t, out lkp))
{
if (version == null)
{
version = new SoftwareVersion();
}
String key = credentials.ToParsableString() + ";DBVER=" + version.ToString();
if (lkp.ContainsKey(key))
{
retVal = lkp[key];
}
}
return(retVal);
}
public static DBResult GetDatabaseVersion(SqlDBCredentials credentials, out SoftwareVersion version, out InternalDatabaseType databaseType)
{
DBResult retVal = new DBResult(DBResult.Result.Success);
try
{
_databaseVersionLock.Lock();
version = null;
databaseType = InternalDatabaseType.Unknown;
String indexKey = credentials.ToParsableString();
if (!_databaseVersionLookup.TryGetValue(indexKey, out version))
{
ISqlDataSource ds = SqlConnectionPool.Instance(credentials).GetDataSource();
DatabaseDataReader reader;
QueryString sql = ds.FormatTrusted("SELECT * FROM I.seq where name in ('{0}', '{1}')", KEY_DB_TYPE, KEY_SCHEMA_VER);
retVal = ds.Query(sql, out reader);
if (retVal.ResultCode == DBResult.Result.Success && reader.HasRows)
{
while (reader.Read())
{
String key = DBUtil.GetString(reader[COL_KEY]);
if (key == KEY_SCHEMA_VER)
{
version = DBUtil.GetSoftwareVersion(reader[COL_VALUE]);
}
else if (key == KEY_DB_TYPE)
{
databaseType = (InternalDatabaseType)DBUtil.GetInt32(reader[COL_VALUE]);
}
}
_databaseVersionLookup.Add(indexKey, version);
}
}
}
finally
{
_databaseVersionLock.Unlock();
}
return(retVal);
}
public T Set <T>(SqlDBCredentials credentials, SoftwareVersion version, T obj)
{
CredentialLookup lkp;
if (!_credentialLookup.TryGetValue(typeof(T), out lkp))
{
lkp = new CredentialLookup();
_credentialLookup.Add(typeof(T), lkp);
}
String key = credentials.ToParsableString() + ";DBVER=" + version.ToString();
if (lkp.ContainsKey(key))
{
lkp[key] = obj;
}
else
{
lkp.Add(key, obj);
}
return(obj);
}
