SQLiteQueryResult.hh

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/*
    Copyright (c) 2002-2009 Tampere University.
 
    This file is part of TTA-Based Codesign Environment (TCE).
 
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    Software is furnished to do so, subject to the following conditions:
 
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/**
 * @file SQLiteQueryResult.hh
 *
 * Class definition of SQLiteQueryResult class.
 *
 * @author Pekka Jääskeläinen 2004 (pekka.jaaskelainen-no.spam-tut.fi)
 *
 * @note rating: red
 */
 
#ifndef TTA_SQLITE_QUERY_RESULT_HH
#define TTA_SQLITE_QUERY_RESULT_HH
 
#include <vector>
#include <string>
#include <cstddef>
#include "sqlite3.h"
 
#include "SQLiteConnection.hh"
#include "RelationalDBQueryResult.hh"
#include "DataObject.hh"
 
/**
 * Implementation of RelationalDBQueryResult interface for SQLite.
 *
 */
class SQLiteQueryResult : public RelationalDBQueryResult {
public:
    SQLiteQueryResult(
        sqlite3_stmt* statement,
        SQLiteConnection* connection,
        bool init = true);
    virtual ~SQLiteQueryResult();
 
    virtual int columns() const;
    virtual std::string columnName(std::size_t columnIndex) const;
    virtual const DataObject& data(std::size_t columnIndex) const;
    virtual const DataObject& data(const std::string& name) const;
    virtual bool hasNext();
    virtual bool next();
    virtual void bindInt(unsigned int position, int value);
    virtual void bindString(unsigned int position, const std::string& value);
    virtual void reset();
 
private:
    /// the compiled SQLite statement handle
    sqlite3_stmt* statement_;
    /// sqlite connection handle
    SQLiteConnection* connection_;
    /// column names
    std::vector<std::string> columnNames_;
    /// data of the current row
    std::vector<DataObject> currentData_;
    /// data of the next row
    std::vector<DataObject> nextData_;
    /// has next() been called for this query
    bool dataInitialized_;
};
 
#endif