cubicchunks.regionlib.lib

Class ExtRegion<K extends IKey<K>>

java.lang.Object

cubicchunks.regionlib.lib.ExtRegion<K>

All Implemented Interfaces:

IRegion<K>, java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

public class ExtRegion<K extends IKey<K>>
extends java.lang.Object
implements IRegion<K>

Constructor Summary

Constructors

Constructor and Description
ExtRegion(java.nio.file.Path saveDirectory, java.util.List<IHeaderDataEntryProvider<?,K>> headerData, IKeyProvider<K> keyProvider, RegionKey regionKey)

Method Summary

Modifier and Type	Method and Description
void	close()
void	flush()
void	forEachKey(CheckedConsumer<? super K,java.io.IOException> cons) Applies the consumer to all existing region keys
boolean	hasValue(K key) Returns true if something was stored there before within this region.
java.util.Optional<java.nio.ByteBuffer>	readValue(K key) Loads a value at a key if there was something stored there before, within this region
void	writeSpecial(K key, java.lang.Object marker)
void	writeValue(K key, java.nio.ByteBuffer value) Stores a value at a key within this region

Methods inherited from class java.lang.Object

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

Constructor Detail

ExtRegion

public ExtRegion(java.nio.file.Path saveDirectory,
                 java.util.List<IHeaderDataEntryProvider<?,K>> headerData,
                 IKeyProvider<K> keyProvider,
                 RegionKey regionKey)
          throws java.io.IOException

Throws:

java.io.IOException

Method Detail

writeValue

public void writeValue(K key,
                       java.nio.ByteBuffer value)
                throws java.io.IOException

Description copied from interface: IRegion

Stores a value at a key within this region

Specified by:

writeValue in interface IRegion<K extends IKey<K>>

Parameters:

key - A key within this region

value - The value to store. Null to remove existing value.

Throws:

UnsupportedDataException - if the data cannot be written due to internal constraints of the storage format. The stored data must remain unchanged after this exception is thrown

java.io.IOException

writeSpecial

public void writeSpecial(K key,
                         java.lang.Object marker)
                  throws java.io.IOException

Specified by:

writeSpecial in interface IRegion<K extends IKey<K>>

Throws:

java.io.IOException

readValue

public java.util.Optional<java.nio.ByteBuffer> readValue(K key)
                                                  throws java.io.IOException

Description copied from interface: IRegion

Loads a value at a key if there was something stored there before, within this region

Specified by:

readValue in interface IRegion<K extends IKey<K>>

Parameters:

key - The key within this region

Returns:

The value at key if it exists

Throws:

java.io.IOException

hasValue

public boolean hasValue(K key)

Description copied from interface: IRegion

Returns true if something was stored there before within this region.

Specified by:

hasValue in interface IRegion<K extends IKey<K>>

forEachKey

public void forEachKey(CheckedConsumer<? super K,java.io.IOException> cons)
                throws java.io.IOException

Description copied from interface: IRegion

Applies the consumer to all existing region keys

Specified by:

forEachKey in interface IRegion<K extends IKey<K>>

Throws:

java.io.IOException

flush

public void flush()
           throws java.io.IOException

Specified by:

flush in interface java.io.Flushable

Throws:

java.io.IOException

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