internal static IEnumerable <int> GetColumnSet(this Schema schema, string metadataKind, string value)
{
for (int col = 0; col < schema.Count; col++)
{
var columnType = schema[col].Metadata.Schema.GetColumnOrNull(metadataKind)?.Type;
if (columnType != null && columnType.IsText)
{
ReadOnlyMemory <char> val = default;
schema[col].Metadata.GetValue(metadataKind, ref val);
if (ReadOnlyMemoryUtils.EqualsStr(value, val))
{
yield return(col);
}
}
}
}
/// <summary>
/// Returns the set of column ids which match the value of specified annotation kind.
/// The annotation type should be of type text.
/// </summary>
public static IEnumerable <int> GetColumnSet(this DataViewSchema schema, string annotationKind, string value)
{
for (int col = 0; col < schema.Count; col++)
{
var columnType = schema[col].Annotations.Schema.GetColumnOrNull(annotationKind)?.Type;
if (columnType is TextDataViewType)
{
ReadOnlyMemory <char> val = default;
schema[col].Annotations.GetValue(annotationKind, ref val);
if (ReadOnlyMemoryUtils.EqualsStr(value, val))
{
yield return(col);
}
}
}
}