void Codes_Downld_finalize_ex(
Codes_Downld* sample,RTIBool deletePointers)
{
DDS_String_free(sample->nodeId);
DDS_String_free(sample->label);
DDS_String_free(sample->msgstr);
DDS_OctetSeq_finalize(&sample->data);
}
void Monitor_Cmd_finalize_ex(
Monitor_Cmd* sample,RTIBool deletePointers)
{
DDS_String_free(sample->msgstr);
}
static int subscriber_main(int domainId, int sample_count) {
DDS_DomainParticipant *participant = NULL;
DDS_Subscriber *subscriber = NULL;
DDS_Topic *topic = NULL;
struct DDS_DataReaderListener reader_listener =
DDS_DataReaderListener_INITIALIZER;
DDS_DataReader *reader = NULL;
DDS_ReturnCode_t retcode;
const char *type_name = NULL;
int count = 0;
struct DDS_Duration_t poll_period = { 1, 0 };
const char* param_list[] = { "2", "divides" };
DDS_ContentFilteredTopic *cft = NULL;
struct DDS_StringSeq parameters;
struct DDS_ContentFilter custom_filter = DDS_ContentFilter_INITIALIZER;
/* To customize participant QoS, use
the configuration file USER_QOS_PROFILES.xml */
participant = DDS_DomainParticipantFactory_create_participant(
DDS_TheParticipantFactory, domainId, &DDS_PARTICIPANT_QOS_DEFAULT,
NULL /* listener */, DDS_STATUS_MASK_NONE);
if (participant == NULL) {
printf("create_participant error\n");
subscriber_shutdown(participant);
return -1;
}
/* To customize subscriber QoS, use
the configuration file USER_QOS_PROFILES.xml */
subscriber = DDS_DomainParticipant_create_subscriber(participant,
&DDS_SUBSCRIBER_QOS_DEFAULT, NULL /* listener */,
DDS_STATUS_MASK_NONE);
if (subscriber == NULL) {
printf("create_subscriber error\n");
subscriber_shutdown(participant);
return -1;
}
/* Register the type before creating the topic */
type_name = ccfTypeSupport_get_type_name();
retcode = ccfTypeSupport_register_type(participant, type_name);
if (retcode != DDS_RETCODE_OK) {
printf("register_type error %d\n", retcode);
subscriber_shutdown(participant);
return -1;
}
/* To customize topic QoS, use
the configuration file USER_QOS_PROFILES.xml */
topic = DDS_DomainParticipant_create_topic(participant, "Example ccf",
type_name, &DDS_TOPIC_QOS_DEFAULT, NULL /* listener */,
DDS_STATUS_MASK_NONE);
if (topic == NULL) {
printf("create_topic error\n");
subscriber_shutdown(participant);
return -1;
}
/*------ Start changes for Custom_Content_Filter ------*/
/* Create and register custom filter */
custom_filter.compile = custom_filter_compile_function;
custom_filter.evaluate = custom_filter_evaluate_function;
custom_filter.finalize = custom_filter_finalize_function;
custom_filter.filter_data = NULL;
retcode = DDS_DomainParticipant_register_contentfilter(participant,
"CustomFilter", &custom_filter);
if (retcode != DDS_RETCODE_OK) {
printf("Failed to register custom content filter");
subscriber_shutdown(participant);
return -1;
}
DDS_StringSeq_initialize(¶meters);
DDS_StringSeq_set_maximum(¶meters, 2);
DDS_StringSeq_from_array(¶meters, param_list, 2);
cft = DDS_DomainParticipant_create_contentfilteredtopic_with_filter(
participant, "ContentFilteredTopic", topic, "%0 %1 x", ¶meters,
"CustomFilter");
if (cft == NULL) {
printf("create_contentfilteredtopic error\n");
subscriber_shutdown(participant);
return -1;
}
printf("Filter: 2 divides x\n");
/* Note that we pass 'ccf' rather than 'topic' to the datareader below */
/*------ End changes for Custom_Content_Filter ------*/
/* Set up a data reader listener */
reader_listener.on_requested_deadline_missed =
ccfListener_on_requested_deadline_missed;
reader_listener.on_requested_incompatible_qos =
ccfListener_on_requested_incompatible_qos;
reader_listener.on_sample_rejected = ccfListener_on_sample_rejected;
reader_listener.on_liveliness_changed = ccfListener_on_liveliness_changed;
reader_listener.on_sample_lost = ccfListener_on_sample_lost;
reader_listener.on_subscription_matched =
ccfListener_on_subscription_matched;
reader_listener.on_data_available = ccfListener_on_data_available;
/*
* NOTE THAT WE USE THE PREVIOUSLY CREATED CUSTOM FILTERED TOPIC TO READ
* NEW SAMPLES
*/
reader = DDS_Subscriber_create_datareader(subscriber,
DDS_Topic_as_topicdescription(cft), &DDS_DATAREADER_QOS_DEFAULT,
&reader_listener, DDS_STATUS_MASK_ALL);
if (reader == NULL) {
printf("create_datareader error\n");
subscriber_shutdown(participant);
return -1;
}
/* Start changes for Custom_Content_Filter */
/* Main loop */
for (count = 0; (sample_count == 0) || (count < sample_count); ++count) {
if (count == 10) {
printf("changing filter parameters\n");
printf("Filter: 15 greater-than x\n");
DDS_String_free(DDS_StringSeq_get(¶meters, 0));
DDS_String_free(DDS_StringSeq_get(¶meters, 1));
*DDS_StringSeq_get_reference(¶meters, 0) = DDS_String_dup("15");
*DDS_StringSeq_get_reference(¶meters, 1) = DDS_String_dup(
"greater-than");
retcode = DDS_ContentFilteredTopic_set_expression_parameters(cft,
¶meters);
if (retcode != DDS_RETCODE_OK) {
printf("set_expression_parameters error\n");
subscriber_shutdown(participant);
return -1;
}
} else if (count == 20) {
struct DDS_StringSeq oldParameters;
printf("changing filter parameters\n");
printf("Filter: 3 divides x\n");
DDS_ContentFilteredTopic_get_expression_parameters(cft,
&oldParameters);
DDS_String_free(DDS_StringSeq_get(&oldParameters, 0));
*DDS_StringSeq_get_reference(&oldParameters, 0) = DDS_String_dup(
"3");
*DDS_StringSeq_get_reference(&oldParameters, 1) = DDS_String_dup(
"divides");
retcode = DDS_ContentFilteredTopic_set_expression_parameters(cft,
&oldParameters);
if (retcode != DDS_RETCODE_OK) {
printf("set_expression_parameters error\n");
subscriber_shutdown(participant);
return -1;
}
}
NDDS_Utility_sleep(&poll_period);
}
/* Cleanup and delete all entities */
return subscriber_shutdown(participant);
}
