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, FSTLongOffheapMap

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) this class is not threadsafe

Nested Class Summary

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

FSTBinaryOffheapMap.KeyValIter

Field Summary

Fields

Modifier and Type	Field and Description
protected byte[]	buffer
protected ByteArrayByteSource	tmpVal

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, mappedFile, MB, memory, numElem

Constructor Summary

Constructors

Constructor and Description
FSTSerializedOffheapMap(int keyLen, long sizeBytes, int numberOfElems, FSTCoder coder)
FSTSerializedOffheapMap(String mappedFile, int keyLen, long sizeMemBytes, int numberOfElems, FSTCoder coder)

Method Summary

Modifier and Type	Method and Description
V	decodeValue(BytezByteSource val)
ByteSource	encodeValue(V value)
FSTCoder	getCoder()
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

Field Detail

tmpVal

protected ByteArrayByteSource tmpVal

buffer

protected byte[] buffer

Constructor Detail

FSTSerializedOffheapMap

public FSTSerializedOffheapMap(int keyLen,
                               long sizeBytes,
                               int numberOfElems,
                               FSTCoder coder)

FSTSerializedOffheapMap

public FSTSerializedOffheapMap(String mappedFile,
                               int keyLen,
                               long sizeMemBytes,
                               int numberOfElems,
                               FSTCoder coder)
                        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>

getCoder

public FSTCoder getCoder()