/// <summary>Add a RecordReader to this collection.</summary>
/// <remarks>
/// Add a RecordReader to this collection.
/// The id() of a RecordReader determines where in the Tuple its
/// entry will appear. Adding RecordReaders with the same id has
/// undefined behavior.
/// </remarks>
/// <exception cref="System.IO.IOException"/>
public virtual void Add(ComposableRecordReader <K, V> rr)
{
kids[rr.Id()] = rr;
if (null == q)
{
cmp = WritableComparator.Get(rr.CreateKey().GetType(), conf);
q = new PriorityQueue <ComposableRecordReader <K, object> >(3, new _IComparer_136(this
));
}
if (rr.HasNext())
{
q.AddItem(rr);
}
}
/// <summary>
/// For all child RRs offering the key provided, obtain an iterator
/// at that position in the JoinCollector.
/// </summary>
/// <exception cref="System.IO.IOException"/>
protected internal virtual void FillJoinCollector(K iterkey)
{
if (!q.IsEmpty())
{
q.Peek().Key(iterkey);
while (0 == cmp.Compare(q.Peek().Key(), iterkey))
{
ComposableRecordReader <K, object> t = q.Poll();
t.Accept(jc, iterkey);
if (t.HasNext())
{
q.AddItem(t);
}
else
{
if (q.IsEmpty())
{
return;
}
}
}
}
}