f438b9b044
Now that selector expressions are prepared, we can avoid doing the work ourselves: - function_name:s are resolved into functions, so we can error out if we see a function_name (and drop the with_function class) - casts are converted to anonymous functions, so we can error out if we see them (and drop with with_cast class) - field_selection:s can relay on the prepared field_idx
66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
/*
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* Copyright (C) 2015-present ScyllaDB
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*
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* Modified by ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: (AGPL-3.0-or-later and Apache-2.0)
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*/
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#pragma once
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#include "schema/schema_fwd.hh"
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#include <seastar/core/shared_ptr.hh>
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#include "cql3/selection/selector.hh"
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#include "cql3/cql3_type.hh"
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#include "cql3/functions/function.hh"
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#include "cql3/functions/function_name.hh"
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namespace cql3 {
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namespace selection {
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class selectable;
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class selectable {
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public:
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virtual ~selectable() {}
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virtual ::shared_ptr<selector::factory> new_selector_factory(data_dictionary::database db, schema_ptr schema, std::vector<const column_definition*>& defs) = 0;
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virtual sstring to_string() const = 0;
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protected:
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static size_t add_and_get_index(const column_definition& def, std::vector<const column_definition*>& defs) {
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auto i = std::find(defs.begin(), defs.end(), &def);
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if (i != defs.end()) {
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return std::distance(defs.begin(), i);
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}
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defs.push_back(&def);
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return defs.size() - 1;
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}
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public:
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class writetime_or_ttl;
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class with_anonymous_function;
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class with_field_selection;
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};
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std::ostream & operator<<(std::ostream &os, const selectable& s);
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class selectable::with_anonymous_function : public selectable {
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shared_ptr<functions::function> _function;
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std::vector<shared_ptr<selectable>> _args;
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public:
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with_anonymous_function(::shared_ptr<functions::function> f, std::vector<shared_ptr<selectable>> args)
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: _function(f), _args(std::move(args)) {
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}
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virtual sstring to_string() const override;
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virtual shared_ptr<selector::factory> new_selector_factory(data_dictionary::database db, schema_ptr s, std::vector<const column_definition*>& defs) override;
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};
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}
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}
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