Uses of Package
org.mapdb

Classes in org.mapdb used by org.mapdb

AsyncWriteEngine
Engine wrapper which provides asynchronous serialization and asynchronous write.

Atomic.Boolean
A boolean record that may be updated atomically.

Atomic.Integer
An int record that may be updated atomically.

Atomic.Long
A long record that may be updated atomically.

Atomic.String
A String record that may be updated atomically.

Atomic.Var
Atomically updated variable which may contain any type of record.

Bind.MapListener
Listener called when `Map` is modified.

Bind.MapWithModificationListener
Primary Maps must provide notifications when it is modified.

BTreeKeySerializer
Custom serializer for BTreeMap keys which enables [Delta encoding](https://en.wikipedia.org/wiki/Delta_encoding).

BTreeKeySerializer.Tuple2KeySerializer
Applies delta compression on array of tuple.

BTreeKeySerializer.Tuple3KeySerializer
Applies delta compression on array of tuple.

BTreeKeySerializer.Tuple4KeySerializer
Applies delta compression on array of tuple.

BTreeMap
A scalable concurrent ConcurrentNavigableMap implementation.

BTreeMap.BNode
common interface for BTree node

BTreeMap.DescendingMap

BTreeMap.DirNode

BTreeMap.LeafNode

BTreeMap.SubMap

Caches.LRU
Least Recently Used cache.

Caches.WeakSoftRef.CacheItem

CompressLZF
This class implements the LZF lossless data compression algorithm.

DataInput2
Wraps ByteBuffer and provides DataInput

DataOutput2
Provides DataOutput implementation on top of growable byte[]

ByteArrayOutputStream is not used as it requires byte[] copying

DB
A database with easy access to named maps and other collections.

DB.BTreeMapMaker

DB.BTreeSetMaker

DB.HTreeMapMaker

DB.HTreeSetMaker

DB.IdentityWrapper

DBMaker
A builder class for creating and opening a database.

EncryptionXTEA
An implementation of the EncryptionXTEA block cipher algorithm.

Engine
Centerpiece for record management, `Engine` is simple key value store.

EngineWrapper
EngineWrapper adapter.

EngineWrapper.ImmutabilityCheckEngine.Item

Fun.Function1

Fun.Function2

Fun.Tuple2

Fun.Tuple3

Fun.Tuple4

Fun.Tuple5

Fun.Tuple6

Hasher
Calculates hash from an object.

HTreeMap
Thread safe concurrent HashMap

This map uses full 32bit hash from beginning, There is no initial load factor and rehash.

HTreeMap.ExpireLinkNode

HTreeMap.LinkedNode
node which holds key-value pair

LongConcurrentHashMap
Thread safe LongMap.

LongMap
Same as 'java.util.Map' but uses primitive 'long' keys to minimise boxing (and GC) overhead.

LongMap.LongMapIterator
Iterates over LongMap key and values without boxing long keys

Queues.SimpleQueue

Queues.SimpleQueue.Node

Serializer
Provides serialization and deserialization

SerializerBase
Serializer which uses 'header byte' to serialize/deserialize most of classes from 'java.lang' and 'java.util' packages.

SerializerBase.FastArrayList
Utility class similar to ArrayList, but with fast identity search.

SerializerPojo
Serializer which handles POJO, object graphs etc.

SerializerPojo.ClassInfo
Stores info about single class stored in MapDB.

SerializerPojo.FieldInfo
Stores info about single field stored in MapDB.

Store
Low level record store.

StoreDirect
Storage Engine which saves record directly into file.

TxBlock
Wraps single transaction in a block

TxEngine.Tx

TxMaker
Transaction factory

TxRollbackException
Exception thrown when transaction is rolled back.

Volume
MapDB abstraction over raw storage (file, disk partition, memory etc...).

Volume.ByteBufferVol
Abstract Volume over bunch of ByteBuffers It leaves ByteBufferVol details (allocation, disposal) on subclasses.

Volume.Factory
Factory which creates two/three volumes used by each MapDB Storage Engine