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Diffstat (limited to 'reader/src/database/sqldb/implsqlite/SQLiteCommand.h')
-rw-r--r-- | reader/src/database/sqldb/implsqlite/SQLiteCommand.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/reader/src/database/sqldb/implsqlite/SQLiteCommand.h b/reader/src/database/sqldb/implsqlite/SQLiteCommand.h new file mode 100644 index 0000000..395fd30 --- /dev/null +++ b/reader/src/database/sqldb/implsqlite/SQLiteCommand.h @@ -0,0 +1,117 @@ +/* + * Copyright (C) 2009-2012 Geometer Plus <[email protected]> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + + +#ifndef __SQLITECOMMAND_H__ +#define __SQLITECOMMAND_H__ + +#include <sqlite3.h> + +#include "../DBCommand.h" + +#include "SQLiteConnection.h" + + +/* + * Command can contain parameters with following names: + * ? - anonymous parameter + * @AAA - named parameter + * + * where AAA is alpha-numeric parameter name + */ +class SQLiteCommand : public DBCommand { + +public: + static std::string packCommand(const std::string &command); + +public: + SQLiteCommand(const std::string &command, DBConnection &connection); + ~SQLiteCommand(); + + bool execute(); + shared_ptr<DBValue> executeScalar(); + shared_ptr<DBDataReader> executeReader(); + +public: + void unlock(); + + // TODO: hide sqlite3_stmt object inside + std::vector<sqlite3_stmt *> &statements(); + const std::vector<sqlite3_stmt *> &statements() const; + + void dumpError() const; + void dumpError(const std::string &msg) const; + + bool resetStatements(); + +private: + + struct BindParameter { + std::size_t Position; + std::string Name; + + BindParameter(std::size_t pos) : Position(pos), Name("") {} + BindParameter(std::size_t pos, const std::string &name) : Position(pos), Name(name) {} + + bool hasName() const; + }; + + class BindParameterComparator { + + public: + BindParameterComparator(const std::string &name); + bool operator () (const SQLiteCommand::BindParameter &p) const; + + private: + const std::string myName; + }; + + void prepareBindContext(); + bool bindParameters(); + bool bindParameterByName(const std::string &name, shared_ptr<DBValue> value); + bool bindParameterByIndex(std::size_t index, shared_ptr<DBValue> value); + bool bindParameter(sqlite3_stmt *statement, int number, shared_ptr<DBValue> value); + bool prepareStatements(SQLiteConnection &conn); + + void finalizeStatements(); + +private: + std::vector<sqlite3_stmt *> myStatements; + std::vector<BindParameter> myBindContext; + bool myLocked; + +private: // disable copying: + SQLiteCommand(const SQLiteCommand &); + const SQLiteCommand &operator = (const SQLiteCommand &); +}; + + +inline SQLiteCommand::SQLiteCommand(const std::string &command, DBConnection &connection) + : DBCommand(SQLiteCommand::packCommand(command), connection), myStatements(), myLocked(false) {} + +inline void SQLiteCommand::unlock() { myLocked = false; } +inline std::vector<sqlite3_stmt *> &SQLiteCommand::statements() { return myStatements; } +inline const std::vector<sqlite3_stmt *> &SQLiteCommand::statements() const { return myStatements; } + +inline bool SQLiteCommand::BindParameter::hasName() const { return Name.size() > 0; } + +inline SQLiteCommand::BindParameterComparator::BindParameterComparator(const std::string &name) : myName(name) {} +inline bool SQLiteCommand::BindParameterComparator::operator () (const SQLiteCommand::BindParameter &p) const { return myName == p.Name; } + +#endif /* __SQLITECOMMAND_H__ */ |