com.ximpleware.extended
Class XMLMemMappedBuffer

java.lang.Object
  com.ximpleware.extended.XMLMemMappedBuffer

All Implemented Interfaces:

IByteBuffer

public class XMLMemMappedBuffer
extends Object
implements IByteBuffer

XMLMemMappedBuffer maps an XML document into memory using memory map. It avoids the complete loading of the document in memory thus making it possible to process very large files. But the trade off is potentially lower performance due to disk IO.

Constructor Summary

XMLMemMappedBuffer()

Method Summary

byte	byteAt(long index) Get the byte at the given index of the underlying byte storage.
byte[]	getBytes() NOt implemented yet
byte[]	getBytes(int offset, int len) not implemented yet
long	length() Total size in terms of # of bytes.
void	readFile(String fileName)
void	writeToFileOutputStream(FileOutputStream ost, long os, long len) write the segment (denoted by its offset and length) into an output file stream

Methods inherited from class java.lang.Object

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

Constructor Detail

XMLMemMappedBuffer

public XMLMemMappedBuffer()

Method Detail

length

public long length()

Description copied from interface: IByteBuffer

Total size in terms of # of bytes.

Specified by:

length in interface IByteBuffer

Returns:

long

byteAt

public byte byteAt(long index)

Description copied from interface: IByteBuffer

Get the byte at the given index of the underlying byte storage.

Specified by:

byteAt in interface IByteBuffer

Returns:

byte

readFile

public void readFile(String fileName)
              throws IOException,
                     ParseExceptionHuge

Throws:

IOException

ParseExceptionHuge

getBytes

public byte[] getBytes()

NOt implemented yet

Specified by:

getBytes in interface IByteBuffer

getBytes

public byte[] getBytes(int offset,
                       int len)

not implemented yet

Specified by:

getBytes in interface IByteBuffer

Parameters:

offset - int bytes offset (not UTF char unit)

len - int

Returns:

byte[]

writeToFileOutputStream

public void writeToFileOutputStream(FileOutputStream ost,
                                    long os,
                                    long len)
                             throws IOException

write the segment (denoted by its offset and length) into an output file stream

Specified by:

writeToFileOutputStream in interface IByteBuffer

Throws:

IOException