Examples with ScalarFunctionImplementationChoice com.facebook.presto.operator.scalar.ScalarFunctionImplementationChoice used on opensource projects

Example 6 with ScalarFunctionImplementationChoice

use of com.facebook.presto.operator.scalar.ScalarFunctionImplementationChoice in project presto by prestodb.

the class FunctionInvokerProvider method createFunctionInvoker.

public FunctionInvoker createFunctionInvoker(FunctionHandle functionHandle, Optional<InvocationConvention> invocationConvention) {
    JavaScalarFunctionImplementation functionImplementation = functionAndTypeManager.getJavaScalarFunctionImplementation(functionHandle);
    for (ScalarFunctionImplementationChoice choice : getAllScalarFunctionImplementationChoices(functionImplementation)) {
        if (checkChoice(choice.getArgumentProperties(), choice.isNullable(), choice.hasProperties(), invocationConvention)) {
            return new FunctionInvoker(choice.getMethodHandle());
        }
    }
    checkState(invocationConvention.isPresent());
    throw new PrestoException(FUNCTION_NOT_FOUND, format("Dependent function implementation (%s) with convention (%s) is not available", functionHandle, invocationConvention.toString()));
}