CStatus status;

GPipelinePtr pipeline = GPipelineFactory::create();

GElementPtr a, b_condition, c, d_condition = nullptr;

b_condition = pipeline->createGGroup<MyCondition>({

pipeline->createGNode<MyNode1>(GNodeInfo("conditionNodeB0", 1)),

pipeline->createGNode<MyNode2>(GNodeInfo("conditionNodeB1", 1)),

pipeline->createGNode<MyNode1>(GNodeInfo("conditionNodeB2", 1))

}); // 生成 b_condition。执行的时候，根据choose()的返回值，在B0,B1,B2中选择一个执行

d_condition = pipeline->createGGroup<MyParamCondition>({

pipeline->createGNode<MyNode1>(GNodeInfo("paramConditionNodeD0", 1)),

pipeline->createGNode<MyNode1>(GNodeInfo("paramConditionNodeD1", 1)),

pipeline->createGNode<MyNode1>(GNodeInfo("paramConditionNodeD2", 1))

});

status += pipeline->registerGElement<MyWriteParamNode>(&a, {}, "writeNodeA", 1);

status += pipeline->registerGElement<MyCondition>(&b_condition, {a}, "conditionB", 1);

status += pipeline->registerGElement<MyReadParamNode>(&c, {b_condition}, "readNodeC", 1);

status += pipeline->registerGElement<MyParamCondition>(&d_condition, {c}, "conditionD", 1);

if (!status.isOK()) {

return;

}

status = pipeline->init();

for (int i = 0; i < 3; i++) {

status += pipeline->run();

std::cout << "[CGraph] tutorial_condition, loop : " << i + 1 << ", and run status = " << status.getCode() << std::endl;

}

status = pipeline->destroy();

GPipelineFactory::remove(pipeline);