org.nustaq.offheap

Class FSTSerializedOffheapMap<K,V>

java.lang.Object

org.nustaq.offheap.FSTBinaryOffheapMap

org.nustaq.offheap.FSTCodedOffheapMap<K,V>

org.nustaq.offheap.FSTSerializedOffheapMap<K,V>

Direct Known Subclasses:

FSTAsciiStringOffheapMap

public abstract class FSTSerializedOffheapMap<K,V>
extends FSTCodedOffheapMap<K,V>

An offheap map using serialization for Value Objects. Note there are several wrappers to represent keys as ByteSource (see FSTAsciiStringOffheapMap for example)

Nested Class Summary

Nested classes/interfaces inherited from class org.nustaq.offheap.FSTBinaryOffheapMap

FSTBinaryOffheapMap.KeyValIter

Field Summary

Fields inherited from class org.nustaq.offheap.FSTBinaryOffheapMap

alloc, bytezOffset, CORE_HEADER_LEN, CUSTOM_FILEHEADER_LEN, customHeader, FILE_HEADER_LEN, freeList, GB, index, KEY_OFFSET_IN_HEADER, keyLen, MB, memory, numElem

Constructor Summary

Constructors

Constructor and Description
FSTSerializedOffheapMap(int keyLen, long sizeBytes, int numberOfElems, FSTConfiguration conf)
FSTSerializedOffheapMap(String mappedFile, int keyLen, long sizeMemBytes, int numberOfElems, FSTConfiguration conf)

Method Summary

Methods

Modifier and Type	Method and Description
V	decodeValue(BytezByteSource val)
ByteSource	encodeValue(V value)
protected int	getEntryLengthForContentLength(long lengthOfEntry) default is to let 100% room for later entry growth.

Methods inherited from class org.nustaq.offheap.FSTCodedOffheapMap

encodeKey, get, put, remove, values

Methods inherited from class org.nustaq.offheap.FSTBinaryOffheapMap

addEntry, addToFreeList, binaryKeys, binaryValues, decElems, dumpIndexStats, finalize, free, getBinary, getCapacityMB, getContentLenFromHeader, getCustomFileHeader, getFreeMem, getHeaderLen, getLenFromHeader, getSize, getUsedMem, incElems, init, initFromFile, printBinaryKey, putBinary, removeBinary, removeEntry, setEntry, writeEntryHeader

Methods inherited from class java.lang.Object

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

Constructor Detail

FSTSerializedOffheapMap

public FSTSerializedOffheapMap(int keyLen,
                       long sizeBytes,
                       int numberOfElems,
                       FSTConfiguration conf)

FSTSerializedOffheapMap

public FSTSerializedOffheapMap(String mappedFile,
                       int keyLen,
                       long sizeMemBytes,
                       int numberOfElems,
                       FSTConfiguration conf)
                        throws Exception

Throws:

Exception

Method Detail

encodeValue

public ByteSource encodeValue(V value)

Specified by:

encodeValue in class FSTCodedOffheapMap<K,V>

getEntryLengthForContentLength

protected int getEntryLengthForContentLength(long lengthOfEntry)

default is to let 100% room for later entry growth. Avoid fragmentation as hell.

Overrides:

getEntryLengthForContentLength in class FSTBinaryOffheapMap

Parameters:

lengthOfEntry -

Returns:

decodeValue

public V decodeValue(BytezByteSource val)

Specified by:

decodeValue in class FSTCodedOffheapMap<K,V>