Examples with FunctionInvoker com.facebook.presto.metadata.FunctionInvoker used on opensource projects

Example 1 with FunctionInvoker

use of com.facebook.presto.metadata.FunctionInvoker in project presto by prestodb.

the class RowDistinctFromOperator method specialize.

@Override
public BuiltInScalarFunctionImplementation specialize(BoundVariables boundVariables, int arity, FunctionAndTypeManager functionAndTypeManager) {
    ImmutableList.Builder<MethodHandle> argumentMethods = ImmutableList.builder();
    Type type = boundVariables.getTypeVariable("T");
    for (Type parameterType : type.getTypeParameters()) {
        FunctionHandle operatorHandle = functionAndTypeManager.resolveOperator(IS_DISTINCT_FROM, fromTypes(parameterType, parameterType));
        FunctionInvoker functionInvoker = functionAndTypeManager.getFunctionInvokerProvider().createFunctionInvoker(operatorHandle, Optional.of(new InvocationConvention(ImmutableList.of(NULL_FLAG, NULL_FLAG), InvocationConvention.InvocationReturnConvention.FAIL_ON_NULL, false)));
        argumentMethods.add(functionInvoker.methodHandle());
    }
    return new BuiltInScalarFunctionImplementation(ImmutableList.of(new ScalarFunctionImplementationChoice(false, ImmutableList.of(valueTypeArgumentProperty(USE_NULL_FLAG), valueTypeArgumentProperty(USE_NULL_FLAG)), ReturnPlaceConvention.STACK, METHOD_HANDLE_NULL_FLAG.bindTo(type).bindTo(argumentMethods.build()), Optional.empty()), new ScalarFunctionImplementationChoice(false, ImmutableList.of(valueTypeArgumentProperty(BLOCK_AND_POSITION), valueTypeArgumentProperty(BLOCK_AND_POSITION)), ReturnPlaceConvention.STACK, METHOD_HANDLE_BLOCK_POSITION.bindTo(type).bindTo(argumentMethods.build()), Optional.empty())));
}