TradeEvent objects.

Typedefs
typedef struct ctl_tradeevent_s	ctl_tradeevent
	Opaque handle representing a trade event. More...

Functions
ctl_tradeevent *	ctl_trade_create_tradeevent (ctl_provider *provider, ctl_channel *channel, ctl_trade *trade, const char *type)
	Create a new trade event. More...
void	ctl_tradeevent_add_field (ctl_tradeevent *ev, const char *name, const char *value)
	Add a field to a trade event. More...
void	ctl_tradeevent_dealloc (ctl_tradeevent *ev)
	Free up the trade event. More...
const char *	ctl_tradeevent_get_field (ctl_tradeevent *ev, const char *name)
	Gets the value of a field on the tradeevent. More...
char const **	ctl_tradeevent_get_fields (ctl_tradeevent *ev, int *num_ptr)
	Gets all fields on the trade event. More...
const char *	ctl_tradeevent_get_type (ctl_tradeevent *ev)
	Get the type of the trade event. More...

Detailed Description

A TradeEvent represents a single event acting on a Trade.

The event may be client generated and received through the ctl_trade_listener interface or it may be generated by custom code to be sent to the client using the ctl_trade_process_event() method.

A TradeEvent typically represents a message received from the client or sent by the server. A message contains a set of fields and values which can be accessed using the ctl_tradeevent_get_field() and ctl_tradeevent_get_fields() methods.

A Typical message represented by a TradeEvent might be:

Field	Value
MsgType	Execute
MsgVersion	5
RequestId	123
TradeId	456789
PriceVersion	3
BuySell	BUY
Price	1.9950

Typedef Documentation

typedef struct ctl_tradeevent_s ctl_tradeevent

Opaque handle representing a trade event.

Function Documentation

ctl_tradeevent* ctl_trade_create_tradeevent	(	ctl_provider *	provider,
		ctl_channel *	channel,
		ctl_trade *	trade,
		const char *	type
	)

Create a new trade event.

Parameters

provider	- The trading provider
channel	- The trade channel
trade	- The trade to set the listener on
type	- The type of tradeevent to create (for example Open, Ack etc)

Returns

A new trade event (or NULL should the trade or channel not exist)

Note

This function can be called from any thread within your application.

void ctl_tradeevent_add_field	(	ctl_tradeevent *	ev,
		const char *	name,
		const char *	value
	)

Add a field to a trade event.

Parameters

ev	- The trade event to add the field to.
name	- The name of the field to add.
value	- The value of the field to add

void ctl_tradeevent_dealloc

(

ctl_tradeevent *

ev

)

Free up the trade event.

Parameters

ev	- The event to free

const char* ctl_tradeevent_get_field	(	ctl_tradeevent *	ev,
		const char *	name
	)

Gets the value of a field on the tradeevent.

Parameters

ev	- The tradeevent to query
name	- The name of the field to get

Returns

The field value or NULL if the field isn't present

Note

The return value should not be freed.

char const** ctl_tradeevent_get_fields	(	ctl_tradeevent *	ev,
		int *	num_ptr
	)

Gets all fields on the trade event.

Parameters

ev	- The tradeevent to query
num_ptr	- Pointer to integer that will hold the number of fields on the event

Returns

An array of fields.

The fields are stored as fields[0] = fieldname0, fields[1] = fieldvalue0, fields[2]=fieldname1, fields[3]=fieldvalue1.

The returned value should be freed with ctl_free()

const char* ctl_tradeevent_get_type

(

ctl_tradeevent *

ev

)

Get the type of the trade event.

Parameters

ev	- The tradeevent to query

Returns

The type of the trade event

Note

The return value should not be freed.