Called before collecting from each IndexReader. All doc ids in {@link #Collect(int)} will correspond to reader. Add docBase to the current IndexReaders internal document id to re-base ids in {@link #Collect(int)}.

public abstract void SetNextReader(
	IndexReader reader,
	int docBase
)

Public MustOverride Sub SetNextReader ( _
	reader As IndexReader, _
	docBase As Integer _
)

public:
virtual void SetNextReader(
	IndexReader^ reader, 
	int docBase
) abstract