66 lines
2.2 KiB
C++
66 lines
2.2 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
|
|
// or more contributor license agreements. See the NOTICE file
|
|
// distributed with this work for additional information
|
|
// regarding copyright ownership. The ASF licenses this file
|
|
// to you under the Apache License, Version 2.0 (the
|
|
// "License"); you may not use this file except in compliance
|
|
// with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing,
|
|
// software distributed under the License is distributed on an
|
|
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
// KIND, either express or implied. See the License for the
|
|
// specific language governing permissions and limitations
|
|
// under the License.
|
|
|
|
#pragma once
|
|
|
|
#include <stddef.h>
|
|
|
|
#include <memory>
|
|
|
|
#include "common/status.h"
|
|
#include "vec/core/column_numbers.h"
|
|
#include "vec/core/types.h"
|
|
#include "vec/data_types/data_type.h"
|
|
#include "vec/functions/function.h"
|
|
|
|
namespace doris {
|
|
class FunctionContext;
|
|
namespace vectorized {
|
|
class Block;
|
|
} // namespace vectorized
|
|
} // namespace doris
|
|
|
|
namespace doris::vectorized {
|
|
// FunctionFake is use for some function call expr only work at prepare/open phase, do not support execute().
|
|
template <typename Impl>
|
|
class FunctionFake : public IFunction {
|
|
public:
|
|
static constexpr auto name = "fake";
|
|
|
|
static FunctionPtr create() { return std::make_shared<FunctionFake>(); }
|
|
|
|
String get_name() const override { return name; }
|
|
|
|
size_t get_number_of_arguments() const override { return 0; }
|
|
|
|
bool is_variadic() const override { return true; }
|
|
|
|
DataTypePtr get_return_type_impl(const DataTypes& arguments) const override {
|
|
return Impl::get_return_type_impl(arguments);
|
|
}
|
|
|
|
bool use_default_implementation_for_nulls() const override { return true; }
|
|
bool use_default_implementation_for_constants() const override { return false; }
|
|
|
|
Status execute_impl(FunctionContext* context, Block& block, const ColumnNumbers& arguments,
|
|
size_t result, size_t input_rows_count) const override {
|
|
return Status::NotSupported(Impl::get_error_msg());
|
|
}
|
|
};
|
|
|
|
} // namespace doris::vectorized
|