org.apache.mina.filter.codec.statemachine
Class IntegerDecodingState

java.lang.Object
  extended by org.apache.mina.filter.codec.statemachine.IntegerDecodingState
All Implemented Interfaces:
DecodingState

public abstract class IntegerDecodingState
extends Object
implements DecodingState

DecodingState which decodes int values in big-endian order (high bytes come first).

Version:
$Rev: 671827 $, $Date: 2008-06-26 10:49:48 +0200 (Do, 26 Jun 2008) $
Author:
The Apache MINA Project (dev@mina.apache.org)

Constructor Summary
IntegerDecodingState()
           
 
Method Summary
 DecodingState decode(IoBuffer in, ProtocolDecoderOutput out)
          Invoked when data is available for this state.
protected abstract  DecodingState finishDecode(int value, ProtocolDecoderOutput out)
          Invoked when this state has consumed a complete int.
 DecodingState finishDecode(ProtocolDecoderOutput out)
          Invoked when the associated IoSession is closed.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

IntegerDecodingState

public IntegerDecodingState()
Method Detail

decode

public DecodingState decode(IoBuffer in,
                            ProtocolDecoderOutput out)
                     throws Exception
Invoked when data is available for this state.

Specified by:
decode in interface DecodingState
Parameters:
in - the data to be decoded.
out - used to write decoded objects.
Returns:
the next state if a state transition was triggered (use this for loop transitions) or null if the state machine has reached its end.
Throws:
Exception - if the read data violated protocol specification.

finishDecode

public DecodingState finishDecode(ProtocolDecoderOutput out)
                           throws Exception
Invoked when the associated IoSession is closed. This method is useful when you deal with protocols which don't specify the length of a message (e.g. HTTP responses without content-length header). Implement this method to process the remaining data that DecodingState.decode(IoBuffer, ProtocolDecoderOutput) method didn't process completely.

Specified by:
finishDecode in interface DecodingState
Parameters:
out - used to write decoded objects.
Returns:
the next state if a state transition was triggered (use this for loop transitions) or null if the state machine has reached its end.
Throws:
Exception - if the read data violated protocol specification.

finishDecode

protected abstract DecodingState finishDecode(int value,
                                              ProtocolDecoderOutput out)
                                       throws Exception
Invoked when this state has consumed a complete int.

Parameters:
value - the integer.
out - the current ProtocolDecoderOutput used to write decoded messages.
Returns:
the next state if a state transition was triggered (use this for loop transitions) or null if the state machine has reached its end.
Throws:
Exception - if the read data violated protocol specification.


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