org.apache.jackrabbit.oak.segment.spi.persistence.split

Class SplitJournalFile

java.lang.Object

org.apache.jackrabbit.oak.segment.spi.persistence.split.SplitJournalFile

All Implemented Interfaces:

JournalFile

public class SplitJournalFile
extends java.lang.Object
implements JournalFile

Constructor Summary

Constructors

Constructor and Description
SplitJournalFile(JournalFile roJournalFile, JournalFile rwJournalFile, java.util.Optional<java.lang.String> lastRoJournalEntry)

Method Summary

Modifier and Type	Method and Description
boolean	exists() Check if the journal already exists.
java.lang.String	getName() Return the name representing the journal file.
JournalFileReader	openJournalReader() Opens the journal file for reading.
JournalFileWriter	openJournalWriter() Opens the journal file for writing.

Methods inherited from class java.lang.Object

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

Constructor Detail

SplitJournalFile

public SplitJournalFile(JournalFile roJournalFile,
                        JournalFile rwJournalFile,
                        java.util.Optional<java.lang.String> lastRoJournalEntry)

Method Detail

openJournalReader

public JournalFileReader openJournalReader()
                                    throws java.io.IOException

Description copied from interface: JournalFile

Opens the journal file for reading. The returned object will represent the current state of the journal. Subsequent writes made by the JournalFileWriter won't be visible until a new JournalFileReader is opened.

Specified by:

openJournalReader in interface JournalFile

Returns:

the reader representing the current state of the journal

Throws:

java.io.IOException

openJournalWriter

public JournalFileWriter openJournalWriter()
                                    throws java.io.IOException

Description copied from interface: JournalFile

Opens the journal file for writing.

Specified by:

openJournalWriter in interface JournalFile

Returns:

Throws:

java.io.IOException

getName

public java.lang.String getName()

Description copied from interface: JournalFile

Return the name representing the journal file.

Specified by:

getName in interface JournalFile

Returns:

name (eg. file name) representing the journal

exists

public boolean exists()

Description copied from interface: JournalFile

Check if the journal already exists.

Specified by:

exists in interface JournalFile

Returns:

true if the journal has been already created by the JournalFileWriter