Examples with BuiltInScalarFunctionImplementation io.prestosql.spi.function.BuiltInScalarFunctionImplementation used on opensource projects

Example 6 with BuiltInScalarFunctionImplementation

use of io.prestosql.spi.function.BuiltInScalarFunctionImplementation in project hetu-core by openlookeng.

the class ArrayTransformFunction method specialize.

@Override
public BuiltInScalarFunctionImplementation specialize(BoundVariables boundVariables, int arity, FunctionAndTypeManager functionAndTypeManager) {
    Type inputType = boundVariables.getTypeVariable("T");
    Type outputType = boundVariables.getTypeVariable("U");
    Class<?> generatedClass = generateTransform(inputType, outputType);
    return new BuiltInScalarFunctionImplementation(false, ImmutableList.of(valueTypeArgumentProperty(RETURN_NULL_ON_NULL), functionTypeArgumentProperty(UnaryFunctionInterface.class)), methodHandle(generatedClass, "transform", PageBuilder.class, Block.class, UnaryFunctionInterface.class), Optional.of(methodHandle(generatedClass, "createPageBuilder")));
}

Example 7 with BuiltInScalarFunctionImplementation

use of io.prestosql.spi.function.BuiltInScalarFunctionImplementation in project hetu-core by openlookeng.

the class ArrayJoin method specializeArrayJoin.

private static BuiltInScalarFunctionImplementation specializeArrayJoin(Map<String, Type> types, FunctionAndTypeManager functionAndTypeManager, List<Boolean> nullableArguments, MethodHandle methodHandle) {
    Type type = types.get("T");
    List<ArgumentProperty> argumentProperties = nullableArguments.stream().map(nullable -> nullable ? valueTypeArgumentProperty(USE_BOXED_TYPE) : valueTypeArgumentProperty(RETURN_NULL_ON_NULL)).collect(toImmutableList());
    if (type instanceof UnknownType) {
        return new BuiltInScalarFunctionImplementation(false, argumentProperties, methodHandle.bindTo(null), Optional.of(STATE_FACTORY));
    } else {
        try {
            BuiltInScalarFunctionImplementation castFunction = functionAndTypeManager.getBuiltInScalarFunctionImplementation(functionAndTypeManager.lookupCast(CastType.CAST, type.getTypeSignature(), VARCHAR_TYPE_SIGNATURE));
            MethodHandle getter;
            Class<?> elementType = type.getJavaType();
            if (elementType == boolean.class) {
                getter = GET_BOOLEAN;
            } else if (elementType == double.class) {
                getter = GET_DOUBLE;
            } else if (elementType == long.class) {
                getter = GET_LONG;
            } else if (elementType == Slice.class) {
                getter = GET_SLICE;
            } else {
                throw new UnsupportedOperationException("Unsupported type: " + elementType.getName());
            }
            MethodHandle cast = castFunction.getMethodHandle();
            // if the cast doesn't take a ConnectorSession, create an adapter that drops the provided session
            if (cast.type().parameterArray()[0] != ConnectorSession.class) {
                cast = MethodHandles.dropArguments(cast, 0, ConnectorSession.class);
            }
            // Adapt a target cast that takes (ConnectorSession, ?) to one that takes (Block, int, ConnectorSession), which will be invoked by the implementation
            // The first two arguments (Block, int) are filtered through the element type's getXXX method to produce the underlying value that needs to be passed to
            // the cast.
            cast = MethodHandles.permuteArguments(cast, MethodType.methodType(Slice.class, cast.type().parameterArray()[1], cast.type().parameterArray()[0]), 1, 0);
            cast = MethodHandles.dropArguments(cast, 1, int.class);
            cast = MethodHandles.dropArguments(cast, 1, Block.class);
            cast = MethodHandles.foldArguments(cast, getter.bindTo(type));
            MethodHandle target = MethodHandles.insertArguments(methodHandle, 0, cast);
            return new BuiltInScalarFunctionImplementation(false, argumentProperties, target, Optional.of(STATE_FACTORY));
        } catch (PrestoException e) {
            throw new PrestoException(INVALID_FUNCTION_ARGUMENT, String.format("Input type %s not supported", type), e);
        }
    }
}

Example 8 with BuiltInScalarFunctionImplementation

use of io.prestosql.spi.function.BuiltInScalarFunctionImplementation in project hetu-core by openlookeng.

the class TestPolymorphicScalarFunction method testSelectsMultipleChoiceWithBlockPosition.

@Test
public void testSelectsMultipleChoiceWithBlockPosition() throws Throwable {
    Signature signature = Signature.builder().kind(SCALAR).operatorType(IS_DISTINCT_FROM).argumentTypes(DECIMAL_SIGNATURE, DECIMAL_SIGNATURE).returnType(parseTypeSignature(BOOLEAN)).build();
    SqlScalarFunction function = SqlScalarFunction.builder(TestMethods.class).signature(signature).deterministic(true).calledOnNullInput(IS_DISTINCT_FROM.isCalledOnNullInput()).choice(choice -> choice.argumentProperties(valueTypeArgumentProperty(USE_NULL_FLAG), valueTypeArgumentProperty(USE_NULL_FLAG)).implementation(methodsGroup -> methodsGroup.methods("shortShort", "longLong"))).choice(choice -> choice.argumentProperties(valueTypeArgumentProperty(BLOCK_AND_POSITION), valueTypeArgumentProperty(BLOCK_AND_POSITION)).implementation(methodsGroup -> methodsGroup.methodWithExplicitJavaTypes("blockPositionLongLong", asList(Optional.of(Slice.class), Optional.of(Slice.class))).methodWithExplicitJavaTypes("blockPositionShortShort", asList(Optional.of(long.class), Optional.of(long.class))))).build();
    BuiltInScalarFunctionImplementation functionImplementation = function.specialize(SHORT_DECIMAL_BOUND_VARIABLES, 2, METADATA.getFunctionAndTypeManager());
    assertEquals(functionImplementation.getAllChoices().size(), 2);
    assertEquals(functionImplementation.getAllChoices().get(0).getArgumentProperties(), Collections.nCopies(2, valueTypeArgumentProperty(USE_NULL_FLAG)));
    assertEquals(functionImplementation.getAllChoices().get(1).getArgumentProperties(), Collections.nCopies(2, valueTypeArgumentProperty(BLOCK_AND_POSITION)));
    Block block1 = new LongArrayBlock(0, Optional.empty(), new long[0]);
    Block block2 = new LongArrayBlock(0, Optional.empty(), new long[0]);
    assertFalse((boolean) functionImplementation.getAllChoices().get(1).getMethodHandle().invoke(block1, 0, block2, 0));
    functionImplementation = function.specialize(LONG_DECIMAL_BOUND_VARIABLES, 2, METADATA.getFunctionAndTypeManager());
    assertTrue((boolean) functionImplementation.getAllChoices().get(1).getMethodHandle().invoke(block1, 0, block2, 0));
}

Example 9 with BuiltInScalarFunctionImplementation

use of io.prestosql.spi.function.BuiltInScalarFunctionImplementation in project hetu-core by openlookeng.

the class TestPolymorphicScalarFunction method testSameLiteralInArgumentsAndReturnValue.

@Test
public void testSameLiteralInArgumentsAndReturnValue() throws Throwable {
    Signature signature = Signature.builder().name("foo").kind(SCALAR).returnType(parseTypeSignature("varchar(x)", ImmutableSet.of("x"))).argumentTypes(parseTypeSignature("varchar(x)", ImmutableSet.of("x"))).build();
    SqlScalarFunction function = SqlScalarFunction.builder(TestMethods.class).signature(signature).deterministic(true).calledOnNullInput(FOO_IS_CALL_ON_NUL_INPUT).choice(choice -> choice.implementation(methodsGroup -> methodsGroup.methods("varcharToVarchar"))).build();
    BuiltInScalarFunctionImplementation functionImplementation = function.specialize(BOUND_VARIABLES, 1, METADATA.getFunctionAndTypeManager());
    Slice slice = (Slice) functionImplementation.getMethodHandle().invoke(INPUT_SLICE);
    assertEquals(slice, VARCHAR_TO_VARCHAR_RETURN_VALUE);
}

Example 10 with BuiltInScalarFunctionImplementation

use of io.prestosql.spi.function.BuiltInScalarFunctionImplementation in project hetu-core by openlookeng.

the class TestPolymorphicScalarFunction method testSetsHiddenToTrueForOperators.

@Test
public void testSetsHiddenToTrueForOperators() {
    Signature signature = Signature.builder().operatorType(ADD).kind(SCALAR).returnType(parseTypeSignature("varchar(x)", ImmutableSet.of("x"))).argumentTypes(parseTypeSignature("varchar(x)", ImmutableSet.of("x"))).build();
    SqlScalarFunction function = SqlScalarFunction.builder(TestMethods.class).signature(signature).calledOnNullInput(ADD.isCalledOnNullInput()).deterministic(true).choice(choice -> choice.implementation(methodsGroup -> methodsGroup.methods("varcharToVarchar"))).build();
    BuiltInScalarFunctionImplementation functionImplementation = function.specialize(BOUND_VARIABLES, 1, METADATA.getFunctionAndTypeManager());
}