/**
* Convert from the row include/sarg/columnNames to the event equivalent
* for the underlying file.
* @param options options for the row reader
* @return a cloned options object that is modified for the event reader
*/
static Reader.Options createEventOptions(Reader.Options options)
{
Reader.Options result = options.clone();
result.range(options.getOffset(), Int64.MaxValue);
// slide the columns down by 6 for the include array
if (options.getInclude() != null)
{
bool[] orig = options.getInclude();
// we always need the base row
orig[0] = true;
bool[] include = new bool[orig.Length + OrcRecordUpdater.FIELDS];
Arrays.fill(include, 0, OrcRecordUpdater.FIELDS, true);
for (int i = 0; i < orig.Length; ++i)
{
include[i + OrcRecordUpdater.FIELDS] = orig[i];
}
result.include(include);
}
// slide the column names down by 6 for the name array
if (options.getColumnNames() != null)
{
string[] orig = options.getColumnNames();
string[] cols = new string[orig.Length + OrcRecordUpdater.FIELDS];
for (int i = 0; i < orig.Length; ++i)
{
cols[i + OrcRecordUpdater.FIELDS] = orig[i];
}
result.searchArgument(options.getSearchArgument(), cols);
}
return result;
}