CppFunctionHandler

CppFunctionHandler#

package: org.yuanrong.call.

public class CppFunctionHandler<R>#

Class for creating instances of stateless functions in C++.

Note

The CppFunctionHandler class is a handle for a C++ function created on the cloud by a Java function. It is the return type of the interface YR.function(CppFunction<R> func).

Users can use CppFunctionHandler to create and invoke C++ function instances.

Interface description#

public CppFunctionHandler(CppFunction<R> func)#

CppFunctionHandler constructor.

  • Parameters:

    • func - CppFunction class instance.

public ObjectRef invoke(Object… args) throws YRException#

Cpp function call interface.

CppFunctionHandler cppFuncHandler = YR.function(CppFunction.of("Add", int.class));
ObjectRef ref = cppFuncHandler.invoke(1);
int result = YR.get(ref, 15);

  • 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 CppFunctionHandler<R> setUrn(String urn)#

When Java calls a stateless function in C++, set the functionUrn for the function.

  • Parameters:

    • urn - functionUrn, can be obtained after the function is deployed.

  • Returns:

    CppFunctionHandler<R>, with built-in invoke method, can create and call the cpp function instance.

public CppFunctionHandler<R> options(InvokeOptions opt)#

Used to dynamically modify the parameters of the called function.

  • Parameters:

  • Returns:

    CppFunctionHandler<R>, Handles processed by C++ functions.