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lCmds.h

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/******************************************************************************/
/*                                                                            */
/* POLiTe - Persistent Object Library Test                                    */
/*                                        Ph.D. Thesis by Mgr. Michal Kopecky */
/*                                                                            */
/* Charles University Prague                                                  */
/*                                                                            */
/******************************************************************************/
/*                                                                            */
/* File name: ...                                                             */
/* Module: ......                                                             */
/*                                                                            */
/******************************************************************************/
/*                                                                            */
/*  Declares the class hierarchy for SQL commands.                            */
/*  it consists of following class hierarchy:                                 */
/*                                                                            */
/*  Cmd                                - abstract base class of the hierarchy */
/*    Cmd0: public Cmd                 - abstract command w/o any parameter   */
/*      CmdCommit: public Cmd0                                                */
/*      CmdRollback: public Cmd0                                              */
/*    Cmd1(param1): public: Cmd        - abstaract class with one parameter   */
/*      CmdSavepoint(name): public Cmd1                                       */
/*      CmdRollbackToSavepoint(name): public Cmd1                             */
/*      CmdSql(SqlCommand): public Cmd1                                       */
/*                                                                            */
/******************************************************************************/

#ifndef __L_CMDS_H__
#define __L_CMDS_H__


// Common POLiTe Header(s)
#include <lDefs.h>
#include <lTypes.h>
#include <lExceptions.h>

class DLL_External Cmd 
{
public:
        Cmd() {};
        virtual ~Cmd() {};
        virtual bool ExecuteCommand(class Connection &DbConn) const = 0;
};

class DLL_External Cmd0 : public Cmd 
{
public:
        Cmd0() : Cmd() {};
        virtual ~Cmd0() {};
};

class DLL_External Cmd1 : public Cmd 
{
protected:
        char *_param1;
public:
        Cmd1();
        Cmd1(const char * const a_param1);
        Cmd1 &operator = (const Cmd1 &Src);
        virtual ~Cmd1();
};

class DLL_External CmdCommit : public Cmd0 
{
public:
        CmdCommit() : Cmd0() {};
        virtual ~CmdCommit() {};
        virtual bool ExecuteCommand(class Connection &DbConn) const;
};

class DLL_External CmdRollback : public Cmd0 
{
public:
        CmdRollback() : Cmd0() {};
        virtual ~CmdRollback() {};
        virtual bool ExecuteCommand(class Connection &DbConn) const;
};

class DLL_External CmdSavepoint : public Cmd1 
{
public:
        CmdSavepoint(const char *const a_name) : Cmd1(a_name) {};
        CmdSavepoint(const CmdSavepoint &Src) : Cmd1(Src) {};
        virtual ~CmdSavepoint() {};
        virtual bool ExecuteCommand(class Connection &DbConn) const;
};

class DLL_External CmdRollbackToSavepoint : public Cmd1 
{
public:
        CmdRollbackToSavepoint(const char *const a_name) : Cmd1(a_name) {};
        CmdRollbackToSavepoint(const CmdRollbackToSavepoint &Src) : Cmd1(Src) {};
        virtual ~CmdRollbackToSavepoint() {};
        virtual bool ExecuteCommand(class Connection &DbConn) const;
};

class DLL_External CmdSql : public Cmd1 
{
public:
        CmdSql(const char *const a_sql) : Cmd1(a_sql) {};
        CmdSql(const CmdSql &Src) : Cmd1(Src) {};
        virtual ~CmdSql() {};
        virtual bool ExecuteCommand(class Connection &DbConn) const;
};

#endif  //__L_CMDS_H__

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