/// <summary>
/// Builds a cell or row query URI.
/// </summary>
/// <param name="query"></param>
public string BuildCellOrRowQuery(CellQuery query)
{
if (!query.CanDescribeTable())
{
throw new ArgumentException(Resources.ResourceBuilder_MinimumForCellOrRowQueryNotMet);
}
return BuildFromCellQuery(query).ToString();
}
private static StringBuilder BuildFromCellQuery(CellQuery query)
{
bool hasTimestamp = query.EndTimestamp.HasValue
&& (!query.BeginTimestamp.HasValue || query.BeginTimestamp.Value < query.EndTimestamp.Value);
StringBuilder uriBuilder = BuildFromDescriptor(query);
bool columnsMissing = query.Cells == null || query.Cells.All(cell => string.IsNullOrEmpty(cell.Column));
if (columnsMissing && !hasTimestamp)
{
return SetMaxVersions(query.MaxVersions, uriBuilder);
}
if (!columnsMissing)
{
HBaseCellDescriptor[] validCells = query.Cells.Where(cell => !string.IsNullOrEmpty(cell.Column)).ToArray();
HBaseCellDescriptor firstCell = validCells.First();
uriBuilder.AppendFormat(_appendSegmentFormat, firstCell.Column);
if (!string.IsNullOrEmpty(firstCell.Qualifier))
{
uriBuilder.AppendFormat(_appendQualifierFormat, firstCell.Qualifier);
}
foreach (HBaseCellDescriptor cell in validCells.Skip(1))
{
uriBuilder.AppendFormat(_appendRangeFormat, cell.Column);
if (!string.IsNullOrEmpty(cell.Qualifier))
{
uriBuilder.AppendFormat(_appendQualifierFormat, cell.Qualifier);
}
}
}
else
{
uriBuilder.AppendFormat(_appendSegmentFormat, _wildCard);
}
if (hasTimestamp)
{
if (query.BeginTimestamp.HasValue)
{
uriBuilder.AppendFormat(_appendSegmentFormat, query.BeginTimestamp);
uriBuilder.AppendFormat(_appendRangeFormat, query.EndTimestamp);
}
else
{
uriBuilder.AppendFormat(_appendSegmentFormat, query.EndTimestamp);
}
}
return SetMaxVersions(query.MaxVersions, uriBuilder);
}
/// <summary>
/// Finds the cells matching the query.
/// </summary>
/// <param name="query"></param>
public CellSet FindCells(CellQuery query)
{
string resource = _resourceBuilder.BuildCellOrRowQuery(query);
IRestResponse response = SendRequest(Method.GET, resource, Options.ContentType);
_errorProvider.ThrowIfStatusMismatch(response, HttpStatusCode.OK, HttpStatusCode.NotFound);
var set = new CellSet
{
Table = query.Table
};
if (response.StatusCode == HttpStatusCode.OK)
set.AddRange(_converter.ConvertCells(response.Content, query.Table));
return set;
}
