#include <ECG_Mcast_Gateway.h>
Public Member Functions | |
| Attributes (void) | |
Public Attributes | |
| Address_Server_Type | address_server_type |
| Handler_Type | handler_type |
| Service_Type | service_type |
| u_char | ttl_value |
| ACE_CString | nic |
| int | ip_multicast_loop |
| int | non_blocking |
The TAO_ECG_Mcast_Gateway class has several properties that can be configured at initialization time, with default values. The canonical trick of using a constructor or init() method with multiple arguments does not work because to change the last argument the application developer needs to know all the other defaults.
Instead we define a helper class that initializes all the fields to reasonable defaults. The application only sets the fields that it is interested into, if new fields are added applications do not need to change.
With a little trickery we can even eliminate named temporaries:
TAO_ECG_Mcast_Gateway gw;
gw.init(TAO_ECG_Mcast_Gateway::Attributes().set_foo(x).set_bar(y));
but we are not implementing that one (detecting errors is too hard without exceptions and ACE+TAO are somewhat shy of exceptions at this point.)
Definition at line 187 of file ECG_Mcast_Gateway.h.
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Definition at line 23 of file ECG_Mcast_Gateway.i. References TAO_ECG_DEFAULT_ADDRESS_SERVER, TAO_ECG_DEFAULT_HANDLER, TAO_ECG_DEFAULT_IP_MULTICAST_LOOP, TAO_ECG_DEFAULT_NIC, TAO_ECG_DEFAULT_NON_BLOCKING, TAO_ECG_DEFAULT_SERVICE, and TAO_ECG_DEFAULT_TTL.
00024 : address_server_type (TAO_ECG_DEFAULT_ADDRESS_SERVER) 00025 , handler_type (TAO_ECG_DEFAULT_HANDLER) 00026 , service_type (TAO_ECG_DEFAULT_SERVICE) 00027 , ttl_value (TAO_ECG_DEFAULT_TTL) 00028 , nic (static_cast<const char *> (TAO_ECG_DEFAULT_NIC)) 00029 , ip_multicast_loop (TAO_ECG_DEFAULT_IP_MULTICAST_LOOP) 00030 , non_blocking (TAO_ECG_DEFAULT_NON_BLOCKING) 00031 { 00032 } |
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Definition at line 191 of file ECG_Mcast_Gateway.h. Referenced by TAO_ECG_Mcast_Gateway::init(). |
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Definition at line 192 of file ECG_Mcast_Gateway.h. Referenced by TAO_ECG_Mcast_Gateway::init(). |
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Definition at line 196 of file ECG_Mcast_Gateway.h. Referenced by TAO_ECG_Mcast_Gateway::init(). |
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Definition at line 195 of file ECG_Mcast_Gateway.h. Referenced by TAO_ECG_Mcast_Gateway::init(). |
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Definition at line 197 of file ECG_Mcast_Gateway.h. Referenced by TAO_ECG_Mcast_Gateway::init(). |
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Definition at line 193 of file ECG_Mcast_Gateway.h. Referenced by TAO_ECG_Mcast_Gateway::init(). |
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Definition at line 194 of file ECG_Mcast_Gateway.h. Referenced by TAO_ECG_Mcast_Gateway::init(). |
1.3.6