Class LLDatabaseMVStore

java.lang.Object

com.io7m.looseleaf.database.mvstore.LLDatabaseMVStore

All Implemented Interfaces:

LLDatabaseType, Closeable, AutoCloseable

public final class LLDatabaseMVStore
extends Object
implements LLDatabaseType

A database implementation based on the H2 MVStore.

Constructor Summary

Constructors

Constructor	Description
LLDatabaseMVStore(org.h2.mvstore.MVStore inStore, org.h2.mvstore.tx.TransactionStore inTXStore)	A database based on the H2 MVStore class.

Method Summary

Modifier and Type	Method	Description
void	close()
long	dataSizeApproximate()
Optional<String>	get(LLKeyName key)	Get the value associated with the given key, if any.
Map<LLKeyName,String>	getAll()
boolean	isClosed()
long	keyCountApproximate()
Map<LLKeyName,String>	readUpdateDelete(LLDatabaseRUD rud)	Atomically read, update, and delete values in the database.

Methods inherited from class java.lang.Object

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

Constructor Details

LLDatabaseMVStore

public LLDatabaseMVStore(org.h2.mvstore.MVStore inStore,
 org.h2.mvstore.tx.TransactionStore inTXStore)

A database based on the H2 MVStore class.

Parameters:

inStore - The MV store

inTXStore - The transaction store

Method Details

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

dataSizeApproximate

public long dataSizeApproximate()

Specified by:

dataSizeApproximate in interface LLDatabaseType

Returns:

The approximate size of the database in bytes

keyCountApproximate

public long keyCountApproximate()

Specified by:

keyCountApproximate in interface LLDatabaseType

Returns:

The approximate number of keys in the database

isClosed

public boolean isClosed()

Specified by:

isClosed in interface LLDatabaseType

Returns:

true if the store has been closed

readUpdateDelete

public Map<LLKeyName,String> readUpdateDelete(LLDatabaseRUD rud)

Description copied from interface: LLDatabaseType

Atomically read, update, and delete values in the database.

Specified by:

readUpdateDelete in interface LLDatabaseType

Parameters:

rud - The RUD operation

Returns:

The read keys

get

public Optional<String> get(LLKeyName key)

Description copied from interface: LLDatabaseType

Get the value associated with the given key, if any.

Specified by:

get in interface LLDatabaseType

Parameters:

key - The key

Returns:

The value, if any

getAll

public Map<LLKeyName,String> getAll()

Specified by:

getAll in interface LLDatabaseType

Returns:

The entire database