Interface JournalStateStore
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- All Known Subinterfaces:
 ExportedJournalStateStore
- All Known Implementing Classes:
 BandanaJournalStateStore,CachingJournalStateStore,FilesystemJournalStateStore,OpenSearchJournalStateStore
public interface JournalStateStoreProvides per node persistence for saving the id of the most recent entry that has been retrieved from the journal.- Since:
 - 5.6
 
 
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description longgetMostRecentId(@NonNull JournalIdentifier journalId)Returns the most recent id for a journal or 0 if no id has been stored yet.voidresetAllJournalStates()Resets the state of all journals.voidsetMostRecentId(@NonNull JournalIdentifier journalId, long id)Set the most recent identifier for a journal. 
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Method Detail
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getMostRecentId
long getMostRecentId(@NonNull JournalIdentifier journalId) throws org.springframework.dao.DataAccessException
Returns the most recent id for a journal or 0 if no id has been stored yet.New journal is automatically created if a journal with the given name does not exists.
- Parameters:
 journalId- id of the journal- Returns:
 - most recent id for a journal or 0 if no id has been stored yet
 - Throws:
 org.springframework.dao.DataAccessException- if reading the id failed
 
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setMostRecentId
void setMostRecentId(@NonNull JournalIdentifier journalId, long id) throws org.springframework.dao.DataAccessException
Set the most recent identifier for a journal.New journal is automatically created if a journal with the given name does not exists.
Only positive identifiers (e.g. > 0) can be stored.
- Parameters:
 journalId- id of the journalid- identifier to store as the most recent id- Throws:
 org.springframework.dao.DataAccessException- if persisting the id failed.
 
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resetAllJournalStates
void resetAllJournalStates() throws org.springframework.dao.DataAccessExceptionResets the state of all journals.After calling this method all
getMostRecentId(JournalIdentifier)calls will initially return 0.- Throws:
 org.springframework.dao.DataAccessException- if reset fails
 
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