48978fd0b4
Due to cyclic dependencies, three classes are converted at once: abstract_function_selector scalar_function_selector aggregate_function_selector
82 lines
2.7 KiB
C++
82 lines
2.7 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.
|
|
*/
|
|
/*
|
|
* Modified by Cloudius Systems
|
|
* Copyright 2015 Cloudius Systems
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "selector.hh"
|
|
#include "selector_factories.hh"
|
|
#include "cql3/functions/function.hh"
|
|
|
|
namespace cql3 {
|
|
namespace selection {
|
|
|
|
class abstract_function_selector : public selector {
|
|
protected:
|
|
shared_ptr<functions::function> _fun;
|
|
|
|
/**
|
|
* The list used to pass the function arguments is recycled to avoid the cost of instantiating a new list
|
|
* with each function call.
|
|
*/
|
|
std::vector<bytes_opt> _args;
|
|
std::vector<shared_ptr<selector>> _arg_selectors;
|
|
public:
|
|
static shared_ptr<factory> new_factory(shared_ptr<functions::function> fun, shared_ptr<selector_factories> factories);
|
|
|
|
abstract_function_selector(shared_ptr<functions::function> fun, std::vector<shared_ptr<selector>> arg_selectors)
|
|
: _fun(std::move(fun)), _arg_selectors(std::move(arg_selectors)) {
|
|
_args.resize(_arg_selectors.size());
|
|
}
|
|
|
|
virtual data_type get_type() override {
|
|
return _fun->return_type();
|
|
}
|
|
|
|
#if 0
|
|
@Override
|
|
public String toString()
|
|
{
|
|
return new StrBuilder().append(fun.name())
|
|
.append("(")
|
|
.appendWithSeparators(argSelectors, ", ")
|
|
.append(")")
|
|
.toString();
|
|
}
|
|
#endif
|
|
};
|
|
|
|
template <typename T /* extends Function */>
|
|
class abstract_function_selector_for : public abstract_function_selector {
|
|
shared_ptr<T> _tfun; // We can't use static_pointer_cast due to virtual inheritance,
|
|
// so store it locally to amortize cost of dynamic_pointer_cast
|
|
protected:
|
|
shared_ptr<T> fun() { return _tfun; }
|
|
public:
|
|
abstract_function_selector_for(shared_ptr<T> fun, std::vector<shared_ptr<selector>> arg_selectors)
|
|
: abstract_function_selector(fun, std::move(arg_selectors))
|
|
, _tfun(dynamic_pointer_cast<T>(fun)) {
|
|
}
|
|
};
|
|
|
|
}
|
|
}
|