256 lines
9.3 KiB
C++
256 lines
9.3 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Copyright (C) 2015 ScyllaDB
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*
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* Modified by ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "cql3/abstract_marker.hh"
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#include "cql3/update_parameters.hh"
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#include "cql3/operation.hh"
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#include "cql3/values.hh"
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#include "cql3/term.hh"
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#include "core/shared_ptr.hh"
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namespace cql3 {
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/**
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* Static helper methods and classes for constants.
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*/
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class constants {
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public:
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#if 0
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private static final Logger logger = LoggerFactory.getLogger(Constants.class);
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#endif
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public:
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enum class type {
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STRING, INTEGER, UUID, FLOAT, BOOLEAN, HEX
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};
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/**
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* A constant value, i.e. a ByteBuffer.
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*/
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class value : public terminal {
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public:
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cql3::raw_value _bytes;
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value(cql3::raw_value bytes_) : _bytes(std::move(bytes_)) {}
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virtual cql3::raw_value get(const query_options& options) override { return _bytes; }
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virtual cql3::raw_value_view bind_and_get(const query_options& options) override { return _bytes.to_view(); }
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virtual sstring to_string() const override { return to_hex(*_bytes); }
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};
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static thread_local const ::shared_ptr<value> UNSET_VALUE;
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class null_literal final : public term::raw {
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private:
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class null_value final : public value {
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public:
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null_value() : value(cql3::raw_value::make_null()) {}
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virtual ::shared_ptr<terminal> bind(const query_options& options) override { return {}; }
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virtual sstring to_string() const override { return "null"; }
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};
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static thread_local const ::shared_ptr<terminal> NULL_VALUE;
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public:
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virtual ::shared_ptr<term> prepare(database& db, const sstring& keyspace, ::shared_ptr<column_specification> receiver) override {
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if (!is_assignable(test_assignment(db, keyspace, receiver))) {
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throw exceptions::invalid_request_exception("Invalid null value for counter increment/decrement");
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}
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return NULL_VALUE;
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}
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virtual assignment_testable::test_result test_assignment(database& db,
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const sstring& keyspace,
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::shared_ptr<column_specification> receiver) override {
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return receiver->type->is_counter()
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? assignment_testable::test_result::NOT_ASSIGNABLE
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: assignment_testable::test_result::WEAKLY_ASSIGNABLE;
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}
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virtual sstring to_string() const override {
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return "null";
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}
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};
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static thread_local const ::shared_ptr<term::raw> NULL_LITERAL;
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class literal : public term::raw {
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private:
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const type _type;
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const sstring _text;
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public:
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literal(type type_, sstring text)
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: _type{type_}
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, _text{text}
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{ }
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static ::shared_ptr<literal> string(sstring text) {
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// This is a workaround for antlr3 not distinguishing between
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// calling in lexer setText() with an empty string and not calling
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// setText() at all.
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if (text.size() == 1 && text[0] == -1) {
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text.reset();
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}
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return ::make_shared<literal>(type::STRING, text);
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}
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static ::shared_ptr<literal> integer(sstring text) {
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return ::make_shared<literal>(type::INTEGER, text);
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}
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static ::shared_ptr<literal> floating_point(sstring text) {
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return ::make_shared<literal>(type::FLOAT, text);
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}
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static ::shared_ptr<literal> uuid(sstring text) {
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return ::make_shared<literal>(type::UUID, text);
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}
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static ::shared_ptr<literal> bool_(sstring text) {
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return ::make_shared<literal>(type::BOOLEAN, text);
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}
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static ::shared_ptr<literal> hex(sstring text) {
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return ::make_shared<literal>(type::HEX, text);
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}
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virtual ::shared_ptr<term> prepare(database& db, const sstring& keyspace, ::shared_ptr<column_specification> receiver);
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private:
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bytes parsed_value(data_type validator);
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public:
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const sstring& get_raw_text() {
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return _text;
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}
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virtual assignment_testable::test_result test_assignment(database& db, const sstring& keyspace, ::shared_ptr<column_specification> receiver);
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virtual sstring to_string() const override {
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return _type == type::STRING ? sstring(sprint("'%s'", _text)) : _text;
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}
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};
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class marker : public abstract_marker {
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public:
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marker(int32_t bind_index, ::shared_ptr<column_specification> receiver)
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: abstract_marker{bind_index, std::move(receiver)}
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{
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assert(!_receiver->type->is_collection());
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}
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virtual cql3::raw_value_view bind_and_get(const query_options& options) override {
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try {
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auto value = options.get_value_at(_bind_index);
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if (value) {
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_receiver->type->validate(*value);
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}
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return value;
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} catch (const marshal_exception& e) {
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throw exceptions::invalid_request_exception(e.what());
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}
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}
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virtual ::shared_ptr<terminal> bind(const query_options& options) override {
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auto bytes = bind_and_get(options);
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if (!bytes) {
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return ::shared_ptr<terminal>{};
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}
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return ::make_shared<constants::value>(std::move(cql3::raw_value::make_value(to_bytes(*bytes))));
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}
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};
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class setter : public operation {
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public:
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using operation::operation;
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virtual void execute(mutation& m, const exploded_clustering_prefix& prefix, const update_parameters& params) override {
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auto value = _t->bind_and_get(params._options);
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if (value.is_null()) {
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m.set_cell(prefix, column, std::move(make_dead_cell(params)));
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} else if (value.is_value()) {
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m.set_cell(prefix, column, std::move(make_cell(*value, params)));
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}
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}
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};
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struct adder final : operation {
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using operation::operation;
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virtual void execute(mutation& m, const exploded_clustering_prefix& prefix, const update_parameters& params) override {
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auto value = _t->bind_and_get(params._options);
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if (value.is_null()) {
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throw exceptions::invalid_request_exception("Invalid null value for counter increment");
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} else if (value.is_unset_value()) {
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return;
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}
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auto increment = value_cast<int64_t>(long_type->deserialize_value(*value));
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m.set_cell(prefix, column, make_counter_update_cell(increment, params));
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}
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};
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struct subtracter final : operation {
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using operation::operation;
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virtual void execute(mutation& m, const exploded_clustering_prefix& prefix, const update_parameters& params) override {
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auto value = _t->bind_and_get(params._options);
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if (value.is_null()) {
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throw exceptions::invalid_request_exception("Invalid null value for counter increment");
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} else if (value.is_unset_value()) {
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return;
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}
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auto increment = value_cast<int64_t>(long_type->deserialize_value(*value));
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if (increment == std::numeric_limits<int64_t>::min()) {
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throw exceptions::invalid_request_exception(sprint("The negation of %d overflows supported counter precision (signed 8 bytes integer)", increment));
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}
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m.set_cell(prefix, column, make_counter_update_cell(-increment, params));
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}
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};
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class deleter : public operation {
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public:
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deleter(const column_definition& column)
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: operation(column, {})
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{ }
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virtual void execute(mutation& m, const exploded_clustering_prefix& prefix, const update_parameters& params) override;
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};
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};
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std::ostream& operator<<(std::ostream&out, constants::type t);
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}
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