public ColumnExpression(PDatum datum) {
this.type = datum.getDataType();
this.isNullable = datum.isNullable();
this.maxLength = datum.getMaxLength();
this.scale = datum.getScale();
this.sortOrder = datum.getSortOrder();
}
public static int getFixedByteSize(PDatum e) {
assert (e.getDataType().isFixedWidth());
Integer maxLength = e.getMaxLength();
return maxLength == null ? e.getDataType().getByteSize() : maxLength;
}