CppInstanceFunctionHandler

package: org.yuanrong.call.

public class CppInstanceFunctionHandler<R>

Operation class that calls a C++ stateful function instance member function.

Note

The CppInstanceFunctionHandler class is the handle of the member function of the C++ class instance after the Java function creates the C++ class instance. It is the return value type of the interface CppInstanceHandler.function.

Users can use the invoke method of CppInstanceFunctionHandler to call member functions of C++ class instances.

• Parameters:

  • <R> - The specific type of a member function.

Interface description

public ObjectRef invoke(Object… args) throws YRException

The member method of the CppInstanceFunctionHandler class is used to call the member function of a cpp class instance.

CppInstanceHandler cppInstanceHandler = YR.instance(CppInstanceClass.of("Counter","FactoryCreate")).setUrn("sn:cn:yrk:default:function:0-opc-opc:$latest").invoke(1);
CppInstanceFunctionHandler cppInsFuncHandler = cppInstanceHandler.function(CppInstanceMethod.of("Add", int.class));
ObjectRef ref = cppInsFuncHandler.invoke(5);
int res = (int)YR.get(ref, 100);

• Parameters:

  • args - The input parameters required to call the specified method.

• Returns:

  ObjectRef: The “id” of the method’s return value in the data system. Use YR.get() to get the actual return value of the method.

• Throws:

  • YRException - Unified exception types thrown.

public CppInstanceFunctionHandler<R> options(InvokeOptions opt)

Member method of the CppInstanceFunctionHandler class, used to dynamically modify the parameters of the called function.

• Parameters:

  • opt - Function call options, used to specify functions such as calling resources.

• Returns:

  CppInstanceFunctionHandler Class handle.

CppInstanceFunctionHandler(String instanceId, String functionId, String className, CppInstanceMethod<R> cppInstanceMethod)

The constructor of CppInstanceFunctionHandler.

• Parameters:

  • instanceId - cpp function instance ID.

  • functionId - cpp function deployment returns ID.

  • className - cpp function class name.

  • cppInstanceMethod - cppInstanceMethod class instance.