com.wombat.mamda.options

Class MamdaOptionChainListener

java.lang.Object

com.wombat.mamda.options.MamdaOptionChainListener

All Implemented Interfaces:

MamdaBasicEvent, MamdaMsgListener, MamdaOptionSeriesUpdate

public class MamdaOptionChainListener
extends java.lang.Object
implements MamdaMsgListener, MamdaOptionSeriesUpdate

MamdaOptionChainListener is a class that specializes in handling and managing option chain updates. Developers provide their own implementation of the MamdaOptionChainHandler interface and will be delivered notifications for various types of options-related events.

Field Summary

Fields

Modifier and Type	Field and Description
static char	ACTION_ADD
static char	ACTION_DELETE
static char	ACTION_UNKNOWN

Constructor Summary

Constructors

Constructor and Description
MamdaOptionChainListener(MamdaOptionChain chain) Create a specialized option chain listener.
MamdaOptionChainListener(java.lang.String underlyingSymbol) Create a specialized option chain listener.

Method Summary

Methods

Modifier and Type	Method and Description
void	addHandler(MamdaOptionChainHandler handler) Add a specialized option chain handler.
com.wombat.mama.MamaDateTime	getActivityTime()
short	getActivityTimeFieldState() return Activity time Field State MODIFIED (2) value indicates the fied was updated in last tick NOT MODIFIED (1) value indicate that there was no change in the last tick NOT_INITIALISED (0) value indicates that the field has never been updated
long	getEventSeqNum()
short	getEventSeqNumFieldState() return source sequence number Field State MODIFIED (2) value indicates the fied was updated in last tick NOT MODIFIED (1) value indicate that there was no change in the last tick NOT_INITIALISED (0) value indicates that the field has never been updated
com.wombat.mama.MamaDateTime	getEventTime()
short	getEventTimeFieldState() return event time Field State MODIFIED (2) value indicates the fied was updated in last tick NOT MODIFIED (1) value indicate that there was no change in the last tick NOT_INITIALISED (0) value indicates that the field has never been updated
char	getOptionAction() Get the most recent action.
MamdaOptionChain	getOptionChain() Return the option chain associated with this listener.
MamdaOptionContract	getOptionContract() Get the option contract to which the most recent event applies.
com.wombat.mama.MamaDateTime	getSrcTime()
short	getSrcTimeFieldState() return Source time Field State MODIFIED (2) value indicates the fied was updated in last tick NOT MODIFIED (1) value indicate that there was no change in the last tick NOT_INITIALISED (0) value indicates that the field has never been updated
void	onMsg(MamdaSubscription subscription, com.wombat.mama.MamaMsg msg, short msgType) Implementation of MamdaListener interface.

Methods inherited from class java.lang.Object

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

Field Detail

ACTION_UNKNOWN

public static final char ACTION_UNKNOWN

See Also:

Constant Field Values

ACTION_ADD

public static final char ACTION_ADD

See Also:

Constant Field Values

ACTION_DELETE

public static final char ACTION_DELETE

See Also:

Constant Field Values

Constructor Detail

MamdaOptionChainListener

public MamdaOptionChainListener(java.lang.String underlyingSymbol)

Create a specialized option chain listener. This listener handles option chain updates.

MamdaOptionChainListener

public MamdaOptionChainListener(MamdaOptionChain chain)

Create a specialized option chain listener. This listener handles option chain updates.

Method Detail

addHandler

public void addHandler(MamdaOptionChainHandler handler)

Add a specialized option chain handler. Currently, only one handler can (and must) be registered.

getOptionChain

public MamdaOptionChain getOptionChain()

Return the option chain associated with this listener.

onMsg

public void onMsg(MamdaSubscription subscription,
         com.wombat.mama.MamaMsg msg,
         short msgType)

Implementation of MamdaListener interface.

Specified by:

onMsg in interface MamdaMsgListener

Parameters:

subscription - The MamdaSubscription to which this listener was registered.

msg - The MamaMsg received by the underlying MAMA API and which resulted in this callback being invoked.

msgType - The message type. e.g. INITIAL, RECAP, UPDATE etc.

getSrcTime

public com.wombat.mama.MamaDateTime getSrcTime()

Specified by:

getSrcTime in interface MamdaBasicEvent

Returns:

Source time. Typically, the exchange generated feed time stamp. This is often the same as the "event time", because many feeds do not distinguish between the actual event time and when the exchange sent the message.

getActivityTime

public com.wombat.mama.MamaDateTime getActivityTime()

Specified by:

getActivityTime in interface MamdaBasicEvent

Returns:

Activity time. A feed handler generated time stamp representing when the data item was last updated.

getEventSeqNum

public long getEventSeqNum()

Specified by:

getEventSeqNum in interface MamdaBasicEvent

Returns:

Source sequence number. The exchange generated sequence number.

getEventTime

public com.wombat.mama.MamaDateTime getEventTime()

Specified by:

getEventTime in interface MamdaBasicEvent

Returns:

Event time. Typically, when the event actually occurred. This is often the same as the "source time", because many feeds do not distinguish between the actual event time and when the exchange sent the message.

getSrcTimeFieldState

public short getSrcTimeFieldState()

Description copied from interface: MamdaBasicEvent

return Source time Field State MODIFIED (2) value indicates the fied was updated in last tick NOT MODIFIED (1) value indicate that there was no change in the last tick NOT_INITIALISED (0) value indicates that the field has never been updated

Specified by:

getSrcTimeFieldState in interface MamdaBasicEvent

getActivityTimeFieldState

public short getActivityTimeFieldState()

Description copied from interface: MamdaBasicEvent

return Activity time Field State MODIFIED (2) value indicates the fied was updated in last tick NOT MODIFIED (1) value indicate that there was no change in the last tick NOT_INITIALISED (0) value indicates that the field has never been updated

Specified by:

getActivityTimeFieldState in interface MamdaBasicEvent

getEventSeqNumFieldState

public short getEventSeqNumFieldState()

Description copied from interface: MamdaBasicEvent

return source sequence number Field State MODIFIED (2) value indicates the fied was updated in last tick NOT MODIFIED (1) value indicate that there was no change in the last tick NOT_INITIALISED (0) value indicates that the field has never been updated

Specified by:

getEventSeqNumFieldState in interface MamdaBasicEvent

getEventTimeFieldState

public short getEventTimeFieldState()

Description copied from interface: MamdaBasicEvent

return event time Field State MODIFIED (2) value indicates the fied was updated in last tick NOT MODIFIED (1) value indicate that there was no change in the last tick NOT_INITIALISED (0) value indicates that the field has never been updated

Specified by:

getEventTimeFieldState in interface MamdaBasicEvent

getOptionContract

public MamdaOptionContract getOptionContract()

Description copied from interface: MamdaOptionSeriesUpdate

Get the option contract to which the most recent event applies.

Specified by:

getOptionContract in interface MamdaOptionSeriesUpdate

Returns:

The option contract to which the most recent event applies. If the contract is new, it will have already been added to the chain. If it is being removed, it will have already been removed from the chain.

getOptionAction

public char getOptionAction()

Description copied from interface: MamdaOptionSeriesUpdate

Get the most recent action.

Specified by:

getOptionAction in interface MamdaOptionSeriesUpdate

Returns:

The action related to the last series update message.