124 lines
3.1 KiB
C++
124 lines
3.1 KiB
C++
/*
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* Copyright (C) 2013 Emeric Poupon
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*
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* This file is part of LMS.
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*
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* LMS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU 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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* LMS 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 LMS. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <vector>
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#include <string>
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class WhereClause
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{
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public:
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WhereClause() {}
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WhereClause(const std::string& clause) { _clause = clause; }
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WhereClause& And(const WhereClause& clause);
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WhereClause& Or(const WhereClause& clause);
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// Arguments binding (for each '?' in where clause)
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WhereClause& bind(std::string_view arg);
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std::string get() const;
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const std::vector<std::string>& getBindArgs() const {return _bindArgs;}
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private:
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std::string _clause; // WHERE clause
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std::vector<std::string> _bindArgs;
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};
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class InnerJoinClause
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{
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public:
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InnerJoinClause() {}
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InnerJoinClause(const std::string& clause);
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InnerJoinClause& And(const InnerJoinClause& clause);
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std::string get() const { return _clause;}
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private:
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std::string _clause;
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};
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class GroupByStatement
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{
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public:
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GroupByStatement() {}
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GroupByStatement(const std::string& statement) { _statement = statement; }
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GroupByStatement& And(const GroupByStatement& statement);
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std::string get() const {return _statement;}
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private:
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std::string _statement; // SELECT statement
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};
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class SelectStatement
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{
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public:
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SelectStatement() {};
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SelectStatement(const std::string& item);
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SelectStatement& And(const std::string& item);
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std::string get() const;
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private:
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std::vector<std::string> _statement;
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};
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class FromClause
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{
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public:
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FromClause() {}
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FromClause(const std::string& clause);
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FromClause& And(const FromClause& clause);
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std::string get() const;
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private:
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std::vector<std::string> _clause;
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};
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class SqlQuery
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{
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public:
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SelectStatement& select() { return _selectStatement;}
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SelectStatement& select(const std::string& statement) { _selectStatement = SelectStatement(statement); return _selectStatement; }
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FromClause& from() { return _fromClause; }
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FromClause& from(const std::string& clause) { _whereClause = WhereClause(clause); return _fromClause; }
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InnerJoinClause& innerJoin() { return _innerJoinClause; }
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WhereClause& where() { return _whereClause; }
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const WhereClause& where() const { return _whereClause; }
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GroupByStatement& groupBy() { return _groupByStatement; }
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const GroupByStatement& groupBy() const { return _groupByStatement; }
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std::string get() const;
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private:
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SelectStatement _selectStatement; // SELECT statement
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InnerJoinClause _innerJoinClause; // INNER JOIN
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FromClause _fromClause; // FROM tables
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WhereClause _whereClause; // WHERE clause
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GroupByStatement _groupByStatement; // GROUP BY statement
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};
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