#3185 creaImageIO Feature New Normal - Clean code

[creaImageIO.git] / src / CppSQLite3.h

////////////////////////////////////////////////////////////////////////////////

// CppSQLite3 - A C++ wrapper around the SQLite3 embedded database library.

//

// Copyright (c) 2004 Rob Groves. All Rights Reserved. rob.groves@btinternet.com

// 

// Permission to use, copy, modify, and distribute this software and its

// documentation for any purpose, without fee, and without a written

// agreement, is hereby granted, provided that the above copyright notice, 

// this paragraph and the following two paragraphs appear in all copies, 

// modifications, and distributions.

//

// IN NO EVENT SHALL THE AUTHOR BE LIABLE TO ANY PARTY FOR DIRECT,

// INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST

// PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION,

// EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//

// THE AUTHOR SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

// PARTICULAR PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF

// ANY, PROVIDED HEREUNDER IS PROVIDED "AS IS". THE AUTHOR HAS NO OBLIGATION

// TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

//

// V3.0         03/08/2004      -Initial Version for sqlite3

//

// V3.1         16/09/2004      -Implemented getXXXXField using sqlite3 functions

//                                              -Added CppSQLiteDB3::tableExists()

////////////////////////////////////////////////////////////////////////////////

#ifndef _CppSQLite3_H_

#define _CppSQLite3_H_



#include "sqlite3.h"

#include <cstdio>

#include <cstring>



#define CPPSQLITE_ERROR 1000



class CppSQLite3Exception

{

public:



    CppSQLite3Exception(const int nErrCode,

                        char* szErrMess,

                        bool bDeleteMsg=true);

  CppSQLite3Exception(const int nErrCode,

                      const char* szErrMess,

                      bool bDeleteMsg=true);

  

    CppSQLite3Exception(const CppSQLite3Exception&  e);



    virtual ~CppSQLite3Exception();



    const int errorCode() { return mnErrCode; }



    const char* errorMessage() { return mpszErrMess; }



    static const char* errorCodeAsString(int nErrCode);



private:



    int mnErrCode;

    char* mpszErrMess;

};





class CppSQLite3Buffer

{

public:



    CppSQLite3Buffer();



    ~CppSQLite3Buffer();



    const char* format(const char* szFormat, ...);



    operator const char*() { return mpBuf; }



    void clear();



private:



    char* mpBuf;

};





class CppSQLite3Binary

{

public:



    CppSQLite3Binary();



    ~CppSQLite3Binary();



    void setBinary(const unsigned char* pBuf, int nLen);

    void setEncoded(const unsigned char* pBuf);



    const unsigned char* getEncoded();

    const unsigned char* getBinary();



    int getBinaryLength();



    unsigned char* allocBuffer(int nLen);



    void clear();



private:



    unsigned char* mpBuf;

    int mnBinaryLen;

    int mnBufferLen;

    int mnEncodedLen;

    bool mbEncoded;

};





class CppSQLite3Query

{

public:



    CppSQLite3Query();



    CppSQLite3Query(const CppSQLite3Query& rQuery);



    CppSQLite3Query(sqlite3* pDB,

                                sqlite3_stmt* pVM,

                bool bEof,

                bool bOwnVM=true);



    CppSQLite3Query& operator=(const CppSQLite3Query& rQuery);



    virtual ~CppSQLite3Query();



    int numFields();



    int fieldIndex(const char* szField);

    const char* fieldName(int nCol);



    const char* fieldDeclType(int nCol);

    int fieldDataType(int nCol);



    const char* fieldValue(int nField);

    const char* fieldValue(const char* szField);



    int getIntField(int nField, int nNullValue=0);

    int getIntField(const char* szField, int nNullValue=0);



    double getFloatField(int nField, double fNullValue=0.0);

    double getFloatField(const char* szField, double fNullValue=0.0);



    const char* getStringField(int nField, const char* szNullValue="");

    const char* getStringField(const char* szField, const char* szNullValue="");



    const unsigned char* getBlobField(int nField, int& nLen);

    const unsigned char* getBlobField(const char* szField, int& nLen);



    bool fieldIsNull(int nField);

    bool fieldIsNull(const char* szField);



    bool eof();



    void nextRow();



    void finalize();



private:



    void checkVM();



        sqlite3* mpDB;

    sqlite3_stmt* mpVM;

    bool mbEof;

    int mnCols;

    bool mbOwnVM;

};





class CppSQLite3Table

{

public:



    CppSQLite3Table();



    CppSQLite3Table(const CppSQLite3Table& rTable);



    CppSQLite3Table(char** paszResults, int nRows, int nCols);



    virtual ~CppSQLite3Table();



    CppSQLite3Table& operator=(const CppSQLite3Table& rTable);



    int numFields();



    int numRows();



    const char* fieldName(int nCol);



    const char* fieldValue(int nField);

    const char* fieldValue(const char* szField);



    int getIntField(int nField, int nNullValue=0);

    int getIntField(const char* szField, int nNullValue=0);



    double getFloatField(int nField, double fNullValue=0.0);

    double getFloatField(const char* szField, double fNullValue=0.0);



    const char* getStringField(int nField, const char* szNullValue="");

    const char* getStringField(const char* szField, const char* szNullValue="");



    bool fieldIsNull(int nField);

    bool fieldIsNull(const char* szField);



    void setRow(int nRow);



    void finalize();



private:



    void checkResults();



    int mnCols;

    int mnRows;

    int mnCurrentRow;

    char** mpaszResults;

};





class CppSQLite3Statement

{

public:



    CppSQLite3Statement();



    CppSQLite3Statement(const CppSQLite3Statement& rStatement);



    CppSQLite3Statement(sqlite3* pDB, sqlite3_stmt* pVM);



    virtual ~CppSQLite3Statement();



    CppSQLite3Statement& operator=(const CppSQLite3Statement& rStatement);



    int execDML();



    CppSQLite3Query execQuery();



    void bind(int nParam, const char* szValue);

    void bind(int nParam, const int nValue);

    void bind(int nParam, const double dwValue);

    void bind(int nParam, const unsigned char* blobValue, int nLen);

    void bindNull(int nParam);



    void reset();



    void finalize();



private:



    void checkDB();

    void checkVM();



    sqlite3* mpDB;

    sqlite3_stmt* mpVM;

};





class CppSQLite3DB

{

public:



    CppSQLite3DB();



    virtual ~CppSQLite3DB();



    void open(const char* szFile);



    void close();



        bool tableExists(const char* szTable);



    int execDML(const char* szSQL);



    CppSQLite3Query execQuery(const char* szSQL);



    int execScalar(const char* szSQL);



    CppSQLite3Table getTable(const char* szSQL);



    CppSQLite3Statement compileStatement(const char* szSQL);



    sqlite_int64 lastRowId();



    void interrupt() { sqlite3_interrupt(mpDB); }



    void setBusyTimeout(int nMillisecs);



    static const char* SQLiteVersion() { return SQLITE_VERSION; }



private:



    CppSQLite3DB(const CppSQLite3DB& db);

    CppSQLite3DB& operator=(const CppSQLite3DB& db);



    sqlite3_stmt* compile(const char* szSQL);



    void checkDB();



    sqlite3* mpDB;

    int mnBusyTimeoutMs;

};



#endif