private static DBQueryStatus _DBRequestInternal(string Table, DBVerbs operation, DBQuery query, DataBaseIO output, out DataBaseIO[] results)
{
try
{
//We gonna throw some exceptions!
if ((operation == DBVerbs.QueryMulti || operation == DBVerbs.QuerySingle || operation == DBVerbs.Update || operation == DBVerbs.Delete) && query == null)
{
throw new ArgumentNullException("When using Query Single/Multi and Change, Delete. Arg: query cannot be null");
}
if ((operation == DBVerbs.Create || operation == DBVerbs.Update) && output == null)
{
throw new ArgumentNullException("When using Query Create and Change. Arg: output cannot be null");
}
DataBaseSocketIO internalQuery = new DataBaseSocketIO {
Verb = operation, TableName = Table
};
switch (operation)
{
case DBVerbs.Create:
internalQuery.DBObjects = output.MoveToArray();
break;
case DBVerbs.QuerySingle:
case DBVerbs.QueryMulti:
internalQuery.Query = query;
break;
case DBVerbs.Update:
internalQuery.DBObjects = output.MoveToArray();
internalQuery.Query = query;
break;
case DBVerbs.Delete:
internalQuery.Query = query;
break;
}
string internalQueryString = internalQuery.Stringify();
string _MessageId = MessageId;
if (!DatabaseSocketsClient.SendCommand(internalQueryString, _MessageId, out string rcvdData))
{
results = null;
throw new DataBaseException("Database is not connected currently...");
}
if (!rcvdData.ToParsedObject(out DataBaseSocketIO reply))
{
throw new DataBaseException("DBInternalReply is null");
}
//time to throw exceptions! (again)
switch (reply.ResultCode)
{
case DBQueryStatus.INJECTION_DETECTED: throw new DataBaseException("INJECTION DETECTED.", reply.Exception);
case DBQueryStatus.INTERNAL_ERROR: throw new DataBaseException("Database Server Internal Error", reply.Exception);
}
switch (operation)
{
case DBVerbs.QueryMulti:
results = reply.DBObjects ?? throw new DataBaseException("Query DBObjects should have non-null result.");
break;
case DBVerbs.Create:
case DBVerbs.Update:
case DBVerbs.QuerySingle:
if (reply.DBObjects.Length != 1)
{
throw new DataBaseException("Create & Update & QuerySingle expect 1 result.");
}
results = reply.DBObjects;
break;
case DBVerbs.Delete:
results = null;
break;
//Who knows what the hell it is...
default: throw new DataBaseException("Database Operation is not Supported!");
}
return(reply.ResultCode);
}
catch (Exception ex)
{
results = null;
ex.LogException();
return(DBQueryStatus.INTERNAL_ERROR);
}
}
public static string ProcessRequest(DataBaseSocketIO request)
{
DataBaseSocketIO reply = new DataBaseSocketIO();
try
{
if (request == null)
{
throw new NullReferenceException("Null Request....");
}
if (request.Verb != DBVerbs.Create)
{
if (request.Query == null)
{
throw new ArgumentNullException("When using Query Single/Multi/Change/Delete. Arg: query cannot be null");
}
}
if (request.Verb == DBVerbs.Create || request.Verb == DBVerbs.Update)
{
if (request.DBObjects == null)
{
throw new ArgumentNullException("When using Create and Update. Arg: output cannot be null");
}
}
int rowModified = 0;
reply.Verb = request.Verb;
switch (request.Verb)
{
case DBVerbs.Create:
rowModified = CommandCreate(request.TableName, request.DBObjects[0]);
reply.ResultCode = (DBQueryStatus)rowModified;
reply.DBObjects = GetFirstRecord(request.TableName, "objectId", request.DBObjects[0]["objectId"]);
break;
case DBVerbs.QuerySingle:
///There shouldn't be QuerySingle... <see cref="DataBaseOperation.QueryMultiple{T}(DBQuery, out List{T}, int, int)"/>
case DBVerbs.QueryMulti:
var results = SQLQueryCommand(BuildQueryString(request.TableName, request.Query));
rowModified = results.Length;
reply.DBObjects = results.ToArray();
reply.ResultCode = results.Length >= 2 ? DBQueryStatus.MORE_RESULTS : (DBQueryStatus)results.Length;
break;
case DBVerbs.Update:
//Only Support first thing....
var dict = SQLQueryCommand(BuildQueryString(request.TableName, request.Query));
if (dict.Length != 1)
{
throw new KeyNotFoundException("Update: Cannot find Specific Record by Query, so Failed to update....");
}
rowModified = CommandUpdate(request.TableName, dict[0]["objectId"].ToString(), request.DBObjects[0]);
reply.ResultCode = (DBQueryStatus)rowModified;
reply.DBObjects = GetFirstRecord(request.TableName, "objectId", dict[0]["objectId"]);
break;
case DBVerbs.Delete:
rowModified = CommandDelete(request.TableName, request.Query.EqualTo["objectId"].ToString());
reply.ResultCode = (DBQueryStatus)rowModified;
break;
default:
//HttpUtility.UrlEncode("!@#$%^&*()_+");
//break;
throw new NotSupportedException("What The Hell you are doing....");
}
reply.Message = "操作成功完成(" + rowModified + ")";
}
catch (Exception ex)
{
reply.ResultCode = DBQueryStatus.INTERNAL_ERROR;
reply.Message = ex.Message;
reply.Exception = new DataBaseException("DBServer Process Exception", ex);
L.E("Exception! => \r\n" + ex);
}
return(reply.Stringify());
}
