org.apache.mina.filter.codec.statemachine

Class ConsumeToCrLfDecodingState

java.lang.Object

org.apache.mina.filter.codec.statemachine.ConsumeToCrLfDecodingState

All Implemented Interfaces:

DecodingState

public abstract class ConsumeToCrLfDecodingState
extends java.lang.Object
implements DecodingState

DecodingState which consumes all bytes until a CRLF has been encountered.

Field Summary

Fields

Modifier and Type	Field and Description
private IoBuffer	buffer
private static byte	CR Carriage return character
private boolean	lastIsCR
private static byte	LF Line feed character

Constructor Summary

Constructors

Constructor and Description
ConsumeToCrLfDecodingState() Creates a new instance.

Method Summary

Modifier and Type	Method and Description
DecodingState	decode(IoBuffer in, ProtocolDecoderOutput out) Invoked when data is available for this state.
protected abstract DecodingState	finishDecode(IoBuffer product, ProtocolDecoderOutput out) Invoked when this state has reached a CRLF.
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

Field Detail

CR

private static final byte CR

Carriage return character

See Also:

Constant Field Values

LF

private static final byte LF

Line feed character

See Also:

Constant Field Values

lastIsCR

private boolean lastIsCR

buffer

private IoBuffer buffer

Constructor Detail

ConsumeToCrLfDecodingState

public ConsumeToCrLfDecodingState()

Creates a new instance.

Method Detail

decode

public DecodingState decode(IoBuffer in,
                            ProtocolDecoderOutput out)
                     throws java.lang.Exception

Description copied from interface: DecodingState

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:

java.lang.Exception - if the read data violated protocol specification.

finishDecode

public DecodingState finishDecode(ProtocolDecoderOutput out)
                           throws java.lang.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:

java.lang.Exception - if the read data violated protocol specification.

finishDecode

protected abstract DecodingState finishDecode(IoBuffer product,
                                              ProtocolDecoderOutput out)
                                       throws java.lang.Exception

Invoked when this state has reached a CRLF.

Parameters:

product - the read bytes including the CRLF.

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:

java.lang.Exception - if the read data violated protocol specification.