public IEnumerable <KeyValuePair <string, ColumnType> > GetMetadataTypes(int col)
{
_ectx.Check(0 <= col && col < ColumnCount);
if (!IsPivot(col))
{
return(_inputSchema.GetMetadataTypes(col));
}
return(_inputSchema.GetMetadataTypes(col).Where(pair => ShouldPreserveMetadata(pair.Key)));
}
private static void ShowMetadata(IndentedTextWriter itw, Schema schema, int col, bool showVals)
{
Contracts.AssertValue(itw);
Contracts.AssertValue(schema);
Contracts.Assert(0 <= col && col < schema.ColumnCount);
using (itw.Nest())
{
foreach (var kvp in schema.GetMetadataTypes(col).OrderBy(p => p.Key))
{
Contracts.AssertNonEmpty(kvp.Key);
Contracts.AssertValue(kvp.Value);
var type = kvp.Value;
itw.Write("Metadata '{0}': {1}", kvp.Key, type);
if (showVals)
{
if (!type.IsVector)
{
ShowMetadataValue(itw, schema, col, kvp.Key, type);
}
else
{
ShowMetadataValueVec(itw, schema, col, kvp.Key, type);
}
}
itw.WriteLine();
}
}
}
public IEnumerable <KeyValuePair <string, ColumnType> > GetMetadataTypes(int col)
{
Contracts.CheckParam(0 <= col && col < ColumnCount, nameof(col));
return(_input.GetMetadataTypes(Sources[col]));
}