Package org.nustaq.serialization.simpleapi

Class OffHeapCoder

java.lang.Object

org.nustaq.serialization.simpleapi.OffHeapCoder

public class OffHeapCoder
extends Object

Created by ruedi on 09.11.14. enables zero copy encoding to offheap memory. The encoding is platform dependent (endianess) and no attemps on compression are made. Use case: messaging, offheap en/decoding, tmp preservation of state NOT thread safe Future version may choose to operate on DirectByteBuffer in case unsafe class vanishes Do not confuse this with a stream. Each single writeObject is an isolated operation, so restoring of references inside an object graph only happens for refs inside the object graph given to writeObject. *********************************************************************** USE ONLY IF DEFAULTCODER (no unsafe) HAS BEEN PROVEN TO SLOW YOU DOWN. *********************************************************************** Note this does not satisfy the FSTCoder interface. Its purely targeted to directly read/write native memory allocates using unsafe.

Field Summary

Fields

Modifier and Type	Field	Description
protected FSTConfiguration	conf

Constructor Summary

Constructors

Constructor	Description
OffHeapCoder()
OffHeapCoder(boolean sharedRefs)
OffHeapCoder(boolean sharedRefs, Class... preregister)	throw
OffHeapCoder(Class... preregister)

Method Summary

Modifier and Type	Method	Description
int	toMemory(Object o, long address, int availableSize)	throws FSTBufferTooSmallException in case object does not fit into given range
Object	toObject(long address, int availableSize)

Methods inherited from class java.lang.Object

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

Field Details

conf

protected FSTConfiguration conf

Constructor Details

OffHeapCoder

public OffHeapCoder()

OffHeapCoder

public OffHeapCoder(boolean sharedRefs)

OffHeapCoder

public OffHeapCoder(boolean sharedRefs,
 Class... preregister)

throw

Parameters:

preregister -

OffHeapCoder

public OffHeapCoder(Class... preregister)

Method Details

toMemory

public int toMemory(Object o,
 long address,
 int availableSize)
             throws IOException

throws FSTBufferTooSmallException in case object does not fit into given range

Parameters:

o -

address -

availableSize -

Returns:

number of bytes written to the memory region

Throws:

IOException

toObject

public Object toObject(long address,
 int availableSize)
                throws IOException,
ClassNotFoundException

Throws:

IOException

ClassNotFoundException