/// <summary>
/// Query the freedb server to see if there is information on this cd
/// </summary>
/// <param name="querystring"></param>
/// <param name="queryResult"></param>
/// <param name="queryResultsColl"></param>
/// <returns></returns>
public string Query(string querystring, out QueryResult queryResult, out QueryResultCollection queryResultsColl)
{
queryResult = null;
queryResultsColl = null;
StringCollection coll = null;
StringBuilder builder = new StringBuilder(FreedbHelper.Commands.CMD_QUERY);
builder.Append("+");
builder.Append(querystring);
//make call
try
{
coll = Call(builder.ToString());
}
catch (Exception ex)
{
string msg = "Unable to perform cddb query.";
Exception newex = new Exception(msg,ex);
throw newex ;
}
// check if results came back
if (coll.Count < 0)
{
string msg = "No results returned from cddb query.";
Exception ex = new Exception(msg,null);
throw ex;
}
string code = GetCode(coll[0]);
if (code == ResponseCodes.CODE_INVALID)
{
string msg = "Unable to process results returned for query: Data returned: " + coll[0];
Exception ex = new Exception (msg,null);
throw ex;
}
switch (code)
{
case ResponseCodes.CODE_500:
return ResponseCodes.CODE_500;
// Multiple results were returned
// Put them into a queryResultCollection object
case ResponseCodes.CODE_211:
case ResponseCodes.CODE_210:
{
queryResultsColl = new QueryResultCollection();
//remove the 210 or 211
coll.RemoveAt(0);
foreach (string line in coll)
{
try
{
QueryResult result = new QueryResult(line, true);
queryResultsColl.Add(result);
}
catch
{ }
}
return ResponseCodes.CODE_211;
}
// exact match
case ResponseCodes.CODE_200:
{
queryResult = new QueryResult(coll[0]);
return ResponseCodes.CODE_200;
}
//not found
case ResponseCodes.CODE_202:
return ResponseCodes.CODE_202;
//Database entry is corrupt
case ResponseCodes.CODE_403:
return ResponseCodes.CODE_403;
//no handshake
case ResponseCodes.CODE_409:
return ResponseCodes.CODE_409;
default:
return ResponseCodes.CODE_500;
}
}
