Package io.debezium.ibmi.db2.journal.retrieve

Class ReceiverPagination

java.lang.Object

io.debezium.ibmi.db2.journal.retrieve.ReceiverPagination

public class ReceiverPagination
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	ReceiverPagination.RangeFinder

Field Summary

Fields

Modifier and Type	Field	Description
private DetailedJournalReceiver	cachedEndPosition
private List<DetailedJournalReceiver>	cachedReceivers
private final JournalInfo	journalInfo
private final JournalInfoRetrieval	journalInfoRetrieval
(package private) static final org.slf4j.Logger	log
private final BigInteger	maxServerSideEntriesBI

Constructor Summary

Constructors

Constructor	Description
ReceiverPagination(JournalInfoRetrieval journalInfoRetrieval, int maxServerSideEntries, JournalInfo journalInfo)

Method Summary

Modifier and Type	Method	Description
(package private) boolean	containsEndPosition(List<DetailedJournalReceiver> receivers, DetailedJournalReceiver endPosition)
(package private) Optional<PositionRange>	findPosition(JournalProcessedPosition startPosition, BigInteger maxEntries, List<DetailedJournalReceiver> receivers, DetailedJournalReceiver endPosition)	should handle reset offset numbers between subsequent entries in the list
(package private) PositionRange	findRange(AS400 as400, JournalProcessedPosition startPosition)
(package private) PositionRange	paginateInSameReceiver(JournalProcessedPosition startPosition, DetailedJournalReceiver endJournalPosition, BigInteger maxServerSideEntriesBI)	only valid when startPosition and endJournalPosition are the same receiver and library
(package private) static void	updateEndPosition(List<DetailedJournalReceiver> list, DetailedJournalReceiver endPosition)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

log

static final org.slf4j.Logger log

journalInfoRetrieval

private final JournalInfoRetrieval journalInfoRetrieval

journalInfo

private final JournalInfo journalInfo

maxServerSideEntriesBI

private final BigInteger maxServerSideEntriesBI

cachedEndPosition

private DetailedJournalReceiver cachedEndPosition

cachedReceivers

private List<DetailedJournalReceiver> cachedReceivers

Constructor Details

ReceiverPagination

ReceiverPagination(JournalInfoRetrieval journalInfoRetrieval,
 int maxServerSideEntries,
 JournalInfo journalInfo)

Method Details

findRange

PositionRange findRange(AS400 as400,
 JournalProcessedPosition startPosition)
                 throws Exception

Throws:

Exception

updateEndPosition

static void updateEndPosition(List<DetailedJournalReceiver> list,
 DetailedJournalReceiver endPosition)

paginateInSameReceiver

PositionRange paginateInSameReceiver(JournalProcessedPosition startPosition,
 DetailedJournalReceiver endJournalPosition,
 BigInteger maxServerSideEntriesBI)
                              throws Exception

only valid when startPosition and endJournalPosition are the same receiver and library

Parameters:

startPosition -

endJournalPosition -

maxServerSideEntriesBI -

Returns:

Throws:

Exception

findPosition

Optional<PositionRange> findPosition(JournalProcessedPosition startPosition,
 BigInteger maxEntries,
 List<DetailedJournalReceiver> receivers,
 DetailedJournalReceiver endPosition)

should handle reset offset numbers between subsequent entries in the list

Parameters:

startPosition -

maxEntries -

receivers -

Returns:

try and find end position at most offsetFromStart from start using the receiver list

containsEndPosition

boolean containsEndPosition(List<DetailedJournalReceiver> receivers,
 DetailedJournalReceiver endPosition)