step.encoding
Class StrideIntStrategy

java.lang.Object
  |
  +--step.encoding.Encoder
        |
        +--step.encoding.Strategy
              |
              +--step.encoding.RegularValueStrategy
                    |
                    +--step.encoding.StrideIntStrategy

Direct Known Subclasses:

PStrideIntStrategy

public class StrideIntStrategy

extends RegularValueStrategy

Assume that the (integer) values increase or decrease with a regular increment.

Algorithm:

 if current - last == stride
     then -> nothing
     else -> meta:IrregularValueEvent, current
 

Credit: Chilimbi, Jones, Zorn (HATF/Meta-TF)

See Also:

StepInt

Field Summary

static String

STRATEGY_NAME

Fields inherited from class step.encoding.RegularValueStrategy

_nextIsRegular

Fields inherited from class step.encoding.Strategy

_baseEncoder

Constructor Summary

StrideIntStrategy(Encoder baseEncoder, int stride)
Create a new "stride" strategy.

Method Summary

StepObject	decode(DecodeContext context) Decode a stride value.
void	dump(int level)
void	encode(StepObject o, EncodeContext context) Encode a stride value.

Methods inherited from class step.encoding.RegularValueStrategy

setNextIsRegular

Methods inherited from class step.encoding.Strategy

baseDecode, baseEncode, eventMessage

Methods inherited from class step.encoding.Encoder

getFactory, getName, indent, makeFieldName

Methods inherited from class java.lang.Object

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

Field Detail

STRATEGY_NAME

public static final String STRATEGY_NAME

See Also:

Constant Field Values

Constructor Detail

StrideIntStrategy

public StrideIntStrategy(Encoder baseEncoder,
                         int stride)

Create a new "stride" strategy.

Parameters:

baseEncoder - the encoder to defer to for deviant values.

stride - the increment from the previous value.

Method Detail

encode

public void encode(StepObject o,
                   EncodeContext context)
            throws EncoderException,
                   IOException

Encode a stride value.

Specified by:

encode in class Encoder

Throws:

EncoderException - if the value is not a StepInt.

IOException - if the encode operation encountered an I/O failure.

decode

public StepObject decode(DecodeContext context)
                  throws EncoderException,
                         IOException

Decode a stride value.

Specified by:

decode in class Encoder

Throws:

IOException - if the decode operation encountered an I/O failure.

EncoderException - if the decode operation encountered an error.

dump

public void dump(int level)

Specified by:

dump in class Encoder