org.apache.jackrabbit.oak.segment.file

Class JournalReader

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:

java.io.Closeable, java.lang.AutoCloseable, java.util.Iterator<JournalEntry>

public final class JournalReader
extends AbstractIterator<JournalEntry>
implements java.io.Closeable

Iterator over the revisions in the journal in reverse order (end of the file to beginning).

Constructor Summary

Constructors

Constructor and Description
JournalReader(JournalFile journal)

Method Summary

Modifier and Type	Method and 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 java.io.IOException

Throws:

java.io.IOException

Method Detail

computeNext

protected JournalEntry computeNext()

Specified by:

computeNext in class AbstractIterator<JournalEntry>

Throws:

java.lang.IllegalStateException - if an IOException occurs while reading from the journal file.

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Throws:

java.io.IOException