net.openhft.chronicle.wire

Interface Sequence

public interface Sequence

Field Summary

Fields

Modifier and Type	Field and Description
static long	NOT_FOUND
static long	NOT_FOUND_RETRY

Method Summary

Modifier and Type	Method and Description
long	getSequence(long forWritePosition) gets the sequence for a writePosition
void	setSequence(long sequence, long position) sets the sequence number for a writePosition
long	toIndex(long headerNumber, long sequence)
long	toSequenceNumber(long index)

Field Detail

NOT_FOUND_RETRY

static final long NOT_FOUND_RETRY

See Also:

Constant Field Values

NOT_FOUND

static final long NOT_FOUND

See Also:

Constant Field Values

Method Detail

getSequence

long getSequence(long forWritePosition)

gets the sequence for a writePosition

This method will only return a valid sequence number of the write position if the write position is the last write position in the queue. YOU CAN NOT USE THIS METHOD TO LOOK UP RANDOM SEQUENCES FOR ANY WRITE POSITION. NOT_FOUND_RETRY will be return if a sequence number can not be found ( so retry ) or NOT_FOUND if you should not retry

Parameters:

forWritePosition - the last write position, expected to be the end of queue

Returns:

NOT_FOUND_RETRY if the sequence for this write position can not be found (you can retry), or NOT_FOUND if it can't be found and there is no point in retrying

setSequence

void setSequence(long sequence,
                 long position)

sets the sequence number for a writePosition

Parameters:

sequence - the sequence number

position - the write position

toIndex

long toIndex(long headerNumber,
             long sequence)

toSequenceNumber

long toSequenceNumber(long index)