Files
scylladb/cql3/selection/selectable.hh
Avi Kivity d768e9fac5 cql3, related: switch to data_dictionary
Stop using database (and including database.hh) for schema related
purposes and use data_dictionary instead.

data_dictionary::database::real_database() is called from several
places, for these reasons:

 - calling yet-to-be-converted code
 - callers with a legitimate need to access data (e.g. system_keyspace)
   but with the ::database accessor removed from query_processor.
   We'll need to find another way to supply system_keyspace with
   data access.
 - to gain access to the wasm engine for testing whether used
   defined functions compile. We'll have to find another way to
   do this as well.

The change is a straightforward replacement. One case in
modification_statement had to change a capture, but everything else
was just a search-and-replace.

Some files that lost "database.hh" gained "mutation.hh", which they
previously had access to through "database.hh".
2021-12-15 13:54:23 +02:00

127 lines
4.1 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.
*/
/*
* Copyright (C) 2015-present ScyllaDB
*
* Modified by ScyllaDB
*/
/*
* This file is part of Scylla.
*
* Scylla is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Scylla is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "schema_fwd.hh"
#include <seastar/core/shared_ptr.hh>
#include "cql3/selection/selector.hh"
#include "cql3/cql3_type.hh"
#include "cql3/functions/function.hh"
#include "cql3/functions/function_name.hh"
namespace cql3 {
namespace selection {
class selectable;
class selectable {
public:
virtual ~selectable() {}
virtual ::shared_ptr<selector::factory> new_selector_factory(data_dictionary::database db, schema_ptr schema, std::vector<const column_definition*>& defs) = 0;
virtual sstring to_string() const = 0;
protected:
static size_t add_and_get_index(const column_definition& def, std::vector<const column_definition*>& defs) {
auto i = std::find(defs.begin(), defs.end(), &def);
if (i != defs.end()) {
return std::distance(defs.begin(), i);
}
defs.push_back(&def);
return defs.size() - 1;
}
public:
class writetime_or_ttl;
class with_function;
class with_anonymous_function;
class with_field_selection;
class with_cast;
};
std::ostream & operator<<(std::ostream &os, const selectable& s);
class selectable::with_function : public selectable {
functions::function_name _function_name;
std::vector<shared_ptr<selectable>> _args;
public:
with_function(functions::function_name fname, std::vector<shared_ptr<selectable>> args)
: _function_name(std::move(fname)), _args(std::move(args)) {
}
virtual sstring to_string() const override;
virtual shared_ptr<selector::factory> new_selector_factory(data_dictionary::database db, schema_ptr s, std::vector<const column_definition*>& defs) override;
};
class selectable::with_anonymous_function : public selectable {
shared_ptr<functions::function> _function;
std::vector<shared_ptr<selectable>> _args;
public:
with_anonymous_function(::shared_ptr<functions::function> f, std::vector<shared_ptr<selectable>> args)
: _function(f), _args(std::move(args)) {
}
virtual sstring to_string() const override;
virtual shared_ptr<selector::factory> new_selector_factory(data_dictionary::database db, schema_ptr s, std::vector<const column_definition*>& defs) override;
};
class selectable::with_cast : public selectable {
::shared_ptr<selectable> _arg;
cql3_type _type;
public:
with_cast(::shared_ptr<selectable> arg, cql3_type type)
: _arg(std::move(arg)), _type(std::move(type)) {
}
virtual sstring to_string() const override;
virtual shared_ptr<selector::factory> new_selector_factory(data_dictionary::database db, schema_ptr s, std::vector<const column_definition*>& defs) override;
};
}
}