com.healthmarketscience.jackcess
Class DefaultCodecProvider.DummyHandler

java.lang.Object
  com.healthmarketscience.jackcess.DefaultCodecProvider.DummyHandler

All Implemented Interfaces:

CodecHandler

Enclosing class:

DefaultCodecProvider

public static class DefaultCodecProvider.DummyHandler
extends Object
implements CodecHandler

CodecHandler implementation which does nothing, useful for databases with no extra encoding.

Constructor Summary

DefaultCodecProvider.DummyHandler()

Method Summary

boolean	canEncodePartialPage() Returns true if this handler can encode partial pages, false otherwise.
void	decodePage(ByteBuffer page, int pageNumber) Decodes the given page buffer inline.
ByteBuffer	encodePage(ByteBuffer page, int pageNumber, int pageOffset) Encodes the given page buffer into a new page buffer and returns it.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultCodecProvider.DummyHandler

public DefaultCodecProvider.DummyHandler()

Method Detail

canEncodePartialPage

public boolean canEncodePartialPage()

Description copied from interface: CodecHandler

Returns true if this handler can encode partial pages, false otherwise. If this method returns false, the CodecHandler.encodePage(java.nio.ByteBuffer, int, int) method will never be called with a non-zero pageOffset.

Specified by:

canEncodePartialPage in interface CodecHandler

decodePage

public void decodePage(ByteBuffer page,
                       int pageNumber)
                throws IOException

Description copied from interface: CodecHandler

Decodes the given page buffer inline.

Specified by:

decodePage in interface CodecHandler

Parameters:

page - the page to be decoded

pageNumber - the page number of the given page

Throws:

IOException - if an exception occurs during decoding

encodePage

public ByteBuffer encodePage(ByteBuffer page,
                             int pageNumber,
                             int pageOffset)
                      throws IOException

Description copied from interface: CodecHandler

Encodes the given page buffer into a new page buffer and returns it. The returned page buffer will be used immediately and discarded so that it may be re-used for subsequent page encodings.

Specified by:

encodePage in interface CodecHandler

Parameters:

page - the page to be encoded, should not be modified

pageNumber - the page number of the given page

pageOffset - offset within the page at which to start writing the page data

Returns:

the properly encoded page buffer for the given page buffer

Throws:

IOException - if an exception occurs during decoding