LedgerManager.LedgerRangeIterator (Apache BookKeeper :: Parent 4.18.0-SNAPSHOT API)

All Known Implementing Classes:

MSLedgerManagerFactory.MsLedgerManager.MSLedgerRangeIterator

Enclosing interface:

LedgerManager
```
public static interface LedgerManager.LedgerRangeIterator
```
Interface of the ledger meta range iterator from storage (e.g. in ZooKeeper or other key/value store).

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  boolean hasNext()
  
  LedgerManager.LedgerRange next()
  Get the next element.

- Method Detail
  - hasNext
```
boolean hasNext()
         throws java.io.IOException
```
    Returns:
    
    true if there are records in the ledger metadata store. false only when there are indeed no records in ledger metadata store.
    
    Throws:
    
    java.io.IOException - thrown when there is any problem accessing the ledger metadata store. It is critical that it doesn't return false in the case in the case it fails to access the ledger metadata store. Otherwise it will end up deleting all ledgers by accident.
  - next
```
LedgerManager.LedgerRange next()
                        throws java.io.IOException
```
    Get the next element.
    
    Returns:
    
    the next element, the LedgerRange returned must be non-empty
    
    Throws:
    
    java.io.IOException - thrown when there is a problem accessing the ledger metadata store. It is critical that it doesn't return false in the case in the case it fails to access the ledger metadata store. Otherwise it will end up deleting all ledgers by accident.