Package org.iq80.leveldb.impl

Class VersionSet.Builder

java.lang.Object

org.iq80.leveldb.impl.VersionSet.Builder

Enclosing class:

VersionSet

private static class VersionSet.Builder
extends Object

A helper class so we can efficiently apply a whole sequence of edits to a particular state without creating intermediate Versions that contain full copies of the intermediate state.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	VersionSet.Builder.FileMetaDataBySmallestKey
private static class	VersionSet.Builder.LevelState

Field Summary

Fields

Modifier and Type	Field	Description
private final Version	baseVersion
private final List<VersionSet.Builder.LevelState>	levels
private final VersionSet	versionSet

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Builder(VersionSet versionSet, Version baseVersion)

Method Summary

Modifier and Type	Method	Description
void	apply(VersionEdit edit)	Apply the specified edit to the current state.
private void	maybeAddFile(Version version, int level, FileMetaData fileMetaData)
void	saveTo(Version version)	Saves the current state in specified version.

Methods inherited from class java.lang.Object

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

Field Details

versionSet

private final VersionSet versionSet

baseVersion

private final Version baseVersion

levels

private final List<VersionSet.Builder.LevelState> levels

Constructor Details

Builder

private Builder(VersionSet versionSet,
 Version baseVersion)

Method Details

apply

public void apply(VersionEdit edit)

Apply the specified edit to the current state.

saveTo

public void saveTo(Version version)
            throws IOException

Saves the current state in specified version.

Throws:

IOException

maybeAddFile

private void maybeAddFile(Version version,
 int level,
 FileMetaData fileMetaData)
                   throws IOException

Throws:

IOException