JournalReader (Oak Segment Tar 1.22.13 API)

java.lang.Object
- com.google.common.collect.UnmodifiableIterator<T>
- - com.google.common.collect.AbstractIterator<JournalEntry>
  - - org.apache.jackrabbit.oak.segment.file.JournalReader

All Implemented Interfaces:

Closeable, AutoCloseable, Iterator<JournalEntry>
```
public final class JournalReader
extends AbstractIterator<JournalEntry>
implements Closeable
```
Iterator over the revisions in the journal in reverse order (end of the file to beginning).

- Constructor Summary
  
  Constructors
  Constructor Description
  
  JournalReader(JournalFile journal)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  void close()
  
  protected JournalEntry computeNext()
  - Methods inherited from class com.google.common.collect.AbstractIterator
    endOfData, hasNext, next, peek
  - Methods inherited from class com.google.common.collect.UnmodifiableIterator
    remove
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  - Methods inherited from interface java.util.Iterator
    forEachRemaining

- Constructor Detail
  - JournalReader
```
public JournalReader(JournalFile journal)
              throws IOException
```
    Throws:
    
    IOException
- Method Detail
  - computeNext
```
protected JournalEntry computeNext()
```
    Specified by:
    
    computeNext in class AbstractIterator<JournalEntry>
    
    Throws:
    
    IllegalStateException - if an IOException occurs while reading from the journal file.
  - close
```
public void close()
           throws IOException
```
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in interface Closeable
    
    Throws:
    
    IOException