private List <InnerData> ReadMetaDataUsingSelect(TCommand script, int countElements, bool isfirstAsk,
ref object lastId,
Func <MetaData, bool> isMine, ref bool isAllDataRead)
{
var list = new List <InnerData>();
var idDescription = PrepareKeyDescription(countElements, isfirstAsk, lastId);
SelectSearchResult result;
int count = 0;
var select = new SelectDescriptionForGeneric <TCommand>(idDescription, script, countElements,
new List <FieldDescription>());
var ret = SelectRead(select, out result);
while (!ret.IsError)
{
bool exit = false;
foreach (var searchData in result.Data)
{
var meta = _metaDataCommandCreator.ReadMetaFromSearchData(searchData);
var data = _userCommandCreator.ReadObjectFromSearchData(searchData.Fields);
meta.Hash = _hashCalculater.CalculateHashFromValue(data);
if (isMine(meta))
{
var innerData = new InnerData(new Transaction(meta.Hash, ""))
{
Data = _hashCalculater.SerializeValue(data),
MetaData = meta
};
list.Add(innerData);
count++;
}
lastId = meta.Id;
if (count == countElements)
{
exit = true;
break;
}
}
if (result.IsAllDataRead || exit)
{
break;
}
idDescription = PrepareKeyDescription(countElements, false, lastId);
select = new SelectDescriptionForGeneric <TCommand>(idDescription, script, count,
new List <FieldDescription>());
ret = SelectRead(select, out result);
}
isAllDataRead = result.IsAllDataRead;
return(list);
}
private RemoteResult SelectRead(SelectDescriptionForGeneric <TCommand> description, out SelectSearchResult searchResult)
{
var result = new List <SearchData>();
description.IdDescription.PageSize = description.CountElements + 2;
var command = _metaDataCommandCreator.CreateSelectCommand(description.Script, description.IdDescription,
description.UserParametrs);
if (command == null)
{
searchResult = new SelectSearchResult(new List <SearchData>(), true);
return(new InnerServerError(Errors.QueryError));
}
var reader = _implModule.CreateReader(command);
reader.Start();
if (reader.IsFail)
{
searchResult = new SelectSearchResult(result, true);
return(new InnerFailResult("script error"));
}
while (reader.IsCanRead && result.Count < description.CountElements)
{
reader.ReadNext();
var fields = _metaDataCommandCreator.SelectProcess(reader);
var key = fields.Find(x => x.Item2.ToLower() == description.IdDescription.AsFieldName.ToLower());
result.Add(new SearchData(fields, key.Item1));
}
bool isAllDataRead = !reader.IsCanRead;
reader.Dispose();
searchResult = new SelectSearchResult(result, isAllDataRead);
return(new SuccessResult());
}
