How to use

withOnlyQueriedData

method

in

org.apache.cassandra.db.rows.UnfilteredRowIterators

/**
 * Turns the given iterator into an update.
 *
 * @param iterator the iterator to turn into updates.
 * @param filter the column filter used when querying {@code iterator}. This is used to make
 * sure we don't include data for which the value has been skipped while reading (as we would
 * then be writing something incorrect).
 *
 * Warning: this method does not close the provided iterator, it is up to
 * the caller to close it.
 */
public static PartitionUpdate fromIterator(UnfilteredRowIterator iterator, ColumnFilter filter)
{
  iterator = UnfilteredRowIterators.withOnlyQueriedData(iterator, filter);
  Holder holder = build(iterator, 16);
  MutableDeletionInfo deletionInfo = (MutableDeletionInfo) holder.deletionInfo;
  return new PartitionUpdate(iterator.metadata(), iterator.partitionKey(), holder, deletionInfo, false);
}

/**
 * Turns the given iterator into an update.
 *
 * @param iterator the iterator to turn into updates.
 * @param filter the column filter used when querying {@code iterator}. This is used to make
 * sure we don't include data for which the value has been skipped while reading (as we would
 * then be writing something incorrect).
 *
 * Warning: this method does not close the provided iterator, it is up to
 * the caller to close it.
 */
public static PartitionUpdate fromIterator(UnfilteredRowIterator iterator, ColumnFilter filter)
{
  iterator = UnfilteredRowIterators.withOnlyQueriedData(iterator, filter);
  Holder holder = build(iterator, 16);
  MutableDeletionInfo deletionInfo = (MutableDeletionInfo) holder.deletionInfo;
  return new PartitionUpdate(iterator.metadata(), iterator.partitionKey(), holder, deletionInfo, false);
}

/**
 * Turns the given iterator into an update.
 *
 * @param iterator the iterator to turn into updates.
 * @param filter the column filter used when querying {@code iterator}. This is used to make
 * sure we don't include data for which the value has been skipped while reading (as we would
 * then be writing something incorrect).
 *
 * Warning: this method does not close the provided iterator, it is up to
 * the caller to close it.
 */
public static PartitionUpdate fromIterator(UnfilteredRowIterator iterator, ColumnFilter filter)
{
  iterator = UnfilteredRowIterators.withOnlyQueriedData(iterator, filter);
  Holder holder = build(iterator, 16);
  MutableDeletionInfo deletionInfo = (MutableDeletionInfo) holder.deletionInfo;
  return new PartitionUpdate(iterator.metadata(), iterator.partitionKey(), holder, deletionInfo, false);
}

/**
 * Turns the given iterator into an update.
 *
 * @param iterator the iterator to turn into updates.
 * @param filter the column filter used when querying {@code iterator}. This is used to make
 * sure we don't include data for which the value has been skipped while reading (as we would
 * then be writing something incorrect).
 *
 * Warning: this method does not close the provided iterator, it is up to
 * the caller to close it.
 */
public static PartitionUpdate fromIterator(UnfilteredRowIterator iterator, ColumnFilter filter)
{
  iterator = UnfilteredRowIterators.withOnlyQueriedData(iterator, filter);
  Holder holder = build(iterator, 16);
  MutableDeletionInfo deletionInfo = (MutableDeletionInfo) holder.deletionInfo;
  return new PartitionUpdate(iterator.metadata(), iterator.partitionKey(), holder, deletionInfo, false);
}