com.healthmarketscience.jackcess
Class DefaultCodecProvider

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

All Implemented Interfaces:

CodecProvider

public class DefaultCodecProvider
extends Object
implements CodecProvider

Default implementation of CodecProvider which does not have any actual encoding/decoding support. See CodecProvider for details on a more useful implementation.

Author:

James Ahlborn

Nested Class Summary

static class	DefaultCodecProvider.DummyHandler CodecHandler implementation which does nothing, useful for databases with no extra encoding.
static class	DefaultCodecProvider.UnsupportedHandler CodecHandler implementation which always throws UnsupportedCodecException, useful for databases with unsupported encodings.

Field Summary

static CodecHandler	DUMMY_HANDLER common instance of DefaultCodecProvider.DummyHandler
static CodecProvider	INSTANCE common instance of DefaultCodecProvider
static CodecHandler	UNSUPPORTED_HANDLER common instance of DefaultCodecProvider.UnsupportedHandler

Constructor Summary

DefaultCodecProvider()

Method Summary

CodecHandler

createHandler(PageChannel channel, Charset charset) Returns a new CodecHandler for the database associated with the given PageChannel.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final CodecProvider INSTANCE

common instance of DefaultCodecProvider

DUMMY_HANDLER

public static final CodecHandler DUMMY_HANDLER

common instance of DefaultCodecProvider.DummyHandler

UNSUPPORTED_HANDLER

public static final CodecHandler UNSUPPORTED_HANDLER

common instance of DefaultCodecProvider.UnsupportedHandler

Constructor Detail

DefaultCodecProvider

public DefaultCodecProvider()

Method Detail

createHandler

public CodecHandler createHandler(PageChannel channel,
                                  Charset charset)
                           throws IOException

Returns a new CodecHandler for the database associated with the given PageChannel.

This implementation returns DUMMY_HANDLER for databases with no encoding and UNSUPPORTED_HANDLER for databases with any encoding.

Specified by:

createHandler in interface CodecProvider

Parameters:

channel - the PageChannel for a Database

charset - the Charset for the Database

Returns:

a new CodecHandler, may not be null

Throws:

IOException