Man pages sections > man3 > CosEventChannelAdmin_ProxyPullSupplier

CosEventChannelAdmin_ProxyPullSupplier - This module implements a

CosEventChannelAdmin_ProxyPullSupplier(3erl) Erlang Module Definition CosEventChannelAdmin_ProxyPullSupplier(3erl)


CosEventChannelAdmin_ProxyPullSupplier - This module implements a ProxyPullSupplier interface which acts as a middleman between pull consumer and the event channel.


The ProxyPullSupplier interface defines the second step for connecting pull consumers to the event channel. A proxy supplier is similar to a normal supplier, but includes an additional method for connecting a consumer to the proxy supplier.
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Any object that possesses an object reference that supports the ProxyPullSupplier interface can perform the following operations:


connect_pull_consumer(Object, PullConsumer) -> Return
Object = #objref
PullConsumer = #objref of PullConsumer type
Return = ok | {'EXCEPTION', #'CosEventChannelAdmin_AlreadyConnected'{}}
This operation connects PullConsumer object to the ProxyPullSupplier object. A nil object reference can be passed to this operation. If so a channel cannot invoke the disconnect_pull_consumer operation on the consumer; the consumer may be disconnected from the channel without being informed. If the ProxyPullSupplier is already connected to a PullConsumer, then the CosEventChannelAdmin_AlreadyConnected exception is raised.
disconnect_pull_supplier(Object) -> Return
Object = #objref
Return = ok
This operation disconnects proxy pull supplier from the event channel. It sends a notification about the loss of the connection to the pull consumer attached to it, unless nil object reference was passed at the connection time.
pull(Object) -> Return
Object = #objref
Return = any
This operation blocks until the event data is available or the CosEventComm_Disconnected exception is raised. It returns the event data to the consumer.
try_pull(Object) -> Return
Object = #objref
Return = {any, bool()}
This operation does not block: if the event data is available, it returns the event data and sets the data availability flag to true; otherwise it returns a long with an undefined value and sets the data availability to false. If the event communication has already been disconnected, the CosEventComm_Disconnected exception is raised.
cosEvent 2.2.1 Ericsson AB