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scylladb/cql3/statements/update_statement.hh

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/*
* 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 2015 Cloudius Systems
*
* Modified by Cloudius Systems
*/
/*
* 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 "cql3/statements/modification_statement.hh"
#include "cql3/column_identifier.hh"
#include "cql3/term.hh"
#include "database_fwd.hh"
#include <vector>
#include "unimplemented.hh"
namespace cql3 {
namespace statements {
/**
* An <code>UPDATE</code> statement parsed from a CQL query statement.
*
*/
class update_statement : public modification_statement {
public:
#if 0
private static final Constants.Value EMPTY = new Constants.Value(ByteBufferUtil.EMPTY_BYTE_BUFFER);
#endif
update_statement(statement_type type, uint32_t bound_terms, schema_ptr s, std::unique_ptr<attributes> attrs);
private:
virtual bool require_full_clustering_key() const override;
virtual void add_update_for_key(mutation& m, const exploded_clustering_prefix& prefix, const update_parameters& params) override;
public:
class parsed_insert : public modification_statement::parsed {
private:
const std::vector<::shared_ptr<column_identifier::raw>> _column_names;
const std::vector<::shared_ptr<term::raw>> _column_values;
public:
/**
* A parsed <code>INSERT</code> statement.
*
* @param name column family being operated on
* @param columnNames list of column names
* @param columnValues list of column values (corresponds to names)
* @param attrs additional attributes for statement (CL, timestamp, timeToLive)
*/
parsed_insert(::shared_ptr<cf_name> name,
::shared_ptr<attributes::raw> attrs,
std::vector<::shared_ptr<column_identifier::raw>> column_names,
std::vector<::shared_ptr<term::raw>> column_values,
bool if_not_exists);
virtual ::shared_ptr<modification_statement> prepare_internal(database& db, schema_ptr schema,
::shared_ptr<variable_specifications> bound_names, std::unique_ptr<attributes> attrs) override;
};
class parsed_update : public modification_statement::parsed {
private:
// Provided for an UPDATE
std::vector<std::pair<::shared_ptr<column_identifier::raw>, ::shared_ptr<operation::raw_update>>> _updates;
std::vector<relation_ptr> _where_clause;
public:
/**
* Creates a new UpdateStatement from a column family name, columns map, consistency
* level, and key term.
*
* @param name column family being operated on
* @param attrs additional attributes for statement (timestamp, timeToLive)
* @param updates a map of column operations to perform
* @param whereClause the where clause
*/
parsed_update(::shared_ptr<cf_name> name,
::shared_ptr<attributes::raw> attrs,
std::vector<std::pair<::shared_ptr<column_identifier::raw>, ::shared_ptr<operation::raw_update>>> updates,
std::vector<relation_ptr> where_clause,
conditions_vector conditions);
protected:
virtual ::shared_ptr<modification_statement> prepare_internal(database& db, schema_ptr schema,
::shared_ptr<variable_specifications> bound_names, std::unique_ptr<attributes> attrs);
};
};
}
}