org.apache.hadoop.hbase.codec
Class BaseDecoder

java.lang.Object
  org.apache.hadoop.hbase.codec.BaseDecoder

All Implemented Interfaces:

CellScanner, Codec.Decoder

Direct Known Subclasses:

KeyValueCodec.KeyValueDecoder, KeyValueCodecWithTags.KeyValueDecoder

@InterfaceAudience.Private
public abstract class BaseDecoder
extends Object
implements Codec.Decoder

TODO javadoc

Nested Class Summary

protected static class

BaseDecoder.PBIS

Field Summary

protected BaseDecoder.PBIS	in
protected static org.apache.commons.logging.Log	LOG

Constructor Summary

BaseDecoder(InputStream in)

Method Summary

boolean	advance() Advance the scanner 1 cell.
Cell	current()
protected abstract Cell	parseCell() Extract a Cell.

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static final org.apache.commons.logging.Log LOG

in

protected final BaseDecoder.PBIS in

Constructor Detail

BaseDecoder

public BaseDecoder(InputStream in)

Method Detail

advance

public boolean advance()
                throws IOException

Description copied from interface: CellScanner

Advance the scanner 1 cell.

Specified by:

advance in interface CellScanner

Returns:

true if the next cell is found and CellScanner.current() will return a valid Cell

Throws:

IOException

parseCell

@Nonnull
protected abstract Cell parseCell()
                           throws IOException

Extract a Cell.

Returns:

a parsed Cell or throws an Exception. EOFException or a generic IOException maybe thrown if EOF is reached prematurely. Does not return null.

Throws:

IOException

current

public Cell current()

Specified by:

current in interface CellScanner

Returns:

the current Cell which may be mutable