bool Equals(StringListComparer other)
{
if (ReferenceEquals(_key, other._key))
{
return(true);
}
if (_key == null || other._key == null)
{
return(false);
}
if (_key.Count != other._key.Count)
{
return(false);
}
for (int i = 0; i < _key.Count; i++)
{
string a = _key[i];
string b = other._key[i];
if (string.CompareOrdinal(a, b) != 0)
{
return(false);
}
}
return(true);
}
public void GetLevels(Thrift.ColumnChunk columnChunk, out int maxRepetitionLevel, out int maxDefinitionLevel)
{
maxRepetitionLevel = 0;
maxDefinitionLevel = 0;
int i = 0;
List <string> path = columnChunk.Meta_data.Path_in_schema;
var comparer = new StringListComparer(path);
if (_memoizedLevels.TryGetValue(comparer, out Tuple <int, int> t))
{
maxRepetitionLevel = t.Item1;
maxDefinitionLevel = t.Item2;
return;
}
int fieldCount = _fileMeta.Schema.Count;
foreach (string pp in path)
{
while (i < fieldCount)
{
SchemaElement schemaElement = _fileMeta.Schema[i];
if (string.CompareOrdinal(schemaElement.Name, pp) == 0)
{
Thrift.SchemaElement se = schemaElement;
bool repeated = (se.__isset.repetition_type && se.Repetition_type == Thrift.FieldRepetitionType.REPEATED);
bool defined = (se.Repetition_type == Thrift.FieldRepetitionType.REQUIRED);
if (repeated)
{
maxRepetitionLevel += 1;
}
if (!defined)
{
maxDefinitionLevel += 1;
}
break;
}
i++;
}
}
_memoizedLevels.Add(comparer, Tuple.Create(maxRepetitionLevel, maxDefinitionLevel));
}