private static void writeSchema(JsonWriter writer, IList<OrcProto.Type> types)
{
int i = 0;
foreach (OrcProto.Type type in types)
{
writer.newObject();
writer.key("columnId").value(i++);
writer.key("columnType").value(type.Kind.ToString());
if (type.FieldNamesCount > 0)
{
writer.key("childColumnNames").array();
foreach (string field in type.FieldNamesList)
{
writer.value(field);
}
writer.endArray();
writer.key("childColumnIds").array();
foreach (int colId in type.SubtypesList)
{
writer.value(colId);
}
writer.endArray();
}
if (type.HasPrecision)
{
writer.key("precision").value(type.Precision);
}
if (type.HasScale)
{
writer.key("scale").value(type.Scale);
}
if (type.HasMaximumLength)
{
writer.key("maxLength").value(type.MaximumLength);
}
writer.endObject();
}
}
private static void writeRowGroupIndexes(JsonWriter writer, int col,
OrcProto.RowIndex[] rowGroupIndex)
{
OrcProto.RowIndex index;
if (rowGroupIndex == null || (col >= rowGroupIndex.Length) ||
((index = rowGroupIndex[col]) == null))
{
return;
}
writer.key("rowGroupIndexes").array();
for (int entryIx = 0; entryIx < index.EntryCount; ++entryIx)
{
writer.newObject();
writer.key("entryId").value(entryIx);
OrcProto.RowIndexEntry entry = index.EntryList[entryIx];
if (entry == null)
{
continue;
}
OrcProto.ColumnStatistics colStats = entry.Statistics;
writeColumnStatistics(writer, ColumnStatisticsImpl.deserialize(colStats));
writer.key("positions").array();
for (int posIx = 0; posIx < entry.PositionsCount; ++posIx)
{
writer.value(entry.PositionsList[posIx]);
}
writer.endArray();
writer.endObject();
}
writer.endArray();
}