private Field(PDatum datum, boolean isNullable, int count, SortOrder sortOrder) {
Preconditions.checkNotNull(sortOrder);
this.type = datum.getDataType();
this.sortOrder = sortOrder;
this.count = count;
this.isNullable = isNullable;
if (this.type.isFixedWidth() && this.type.getByteSize() == null) {
this.byteSize = datum.getByteSize();
}
}
public RowKeyColumnExpression(PDatum datum, RowKeyValueAccessor accessor) {
this(datum, accessor, datum.getDataType());
}