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secondo/Algebras/Distributed/DServerCmdExecute.h
2026-01-23 17:03:45 +08:00

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/*
----
This file is part of SECONDO.
Copyright (C) 2012, University in Hagen, Department of Computer Science,
Database Systems for New Applications.
SECONDO 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.
SECONDO 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 SECONDO; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
----
//paragraph [1] Title: [{\Large \bf \begin{center}] [\end{center}}]
//paragraph [10] Footnote: [{\footnote{] [}}]
//[TOC] [\tableofcontents]
//[_] [\_]
//[&] [\&]
//[x] [\ensuremath{\times}]
//[->] [\ensuremath{\rightarrow}]
//[>] [\ensuremath{>}]
//[<] [\ensuremath{<}]
//[ast] [\ensuremath{\ast}]
*/
/*
[1] Class DServerCmdExecute Definition
\begin{center}
April 2012 Thomas Achmann
\end{center}
[TOC]
0 Description
The class ~DServerCmdExecute~ provides the functionality to copy the data of a
darray index to antoher darray, keeping the index. It is used in the
DArray::Clone() method and in the implementation of the ~put~ operator.
This class derives from ~DServerCmd~ class, which provides the basic
communication and run functionality.
The class ~DServerCmdExecuteParam~ is a data class for the parameters used
during the execution of a ~DServerCmdExecute~ object.
*/
/*
1 Preliminaries
1.1 Defines
*/
#ifndef H_DSERVERCMDEXECUTE_H
#define H_DSERVERCMDEXECUTE_H
/*
1.2 Includes
*/
#include "DServerCmd.h"
/*
2 Class ~DServerCmdExecuteParam~
The class ~DServerCmdExecuteParam~ contains the parameters used in
the ~run~ - method of the class ~DServerCmdExecute~.
* derives from class ~DServerParam~
Provided parameters:
* string m[_]cmd - the command, which is executed
* vector[<]string[>] m[_]sourceObjects - DArrayObject names, which serve as
input to the command function
*/
class DServerCmdExecuteParam
: public DServerParam
{
/*
2.1 Private Default Constructor
* may not be used!
*/
DServerCmdExecuteParam() {}
/*
2.2 Constructor
* const string[&] inCmd - the command to be executed
* const vector[<]string[>][&] inSourceObject - DArray names, which are used
as input in the command
*/
public:
DServerCmdExecuteParam(const string& inCmd,
const vector<string>& inSourceObjects)
: DServerParam()
, m_cmd(inCmd)
, m_sourceObjects(inSourceObjects)
{}
/*
2.3 Execute - Constructor
*/
DServerCmdExecuteParam(const DServerCmdExecuteParam & inP)
: DServerParam(inP)
, m_cmd(inP.m_cmd)
, m_sourceObjects(inP.m_sourceObjects) {}
/*
2.4 Destructor
*/
virtual ~DServerCmdExecuteParam() {}
/*
2.5 Getter Methods
2.5.2 Method ~const string[&] getCommand const~
* returns const string[&] - the command
*/
const string& getCommand() const { return m_cmd; }
/*
2.5.3 Method ~const vector[<]string[>][&] getSourceObjects const~
* returns const vector[<]string[>][&] - the array of source objects
*/
const vector<string>& getSourceObjects() const
{ return m_sourceObjects; }
/*
2.5.4 Method ~const string[&] getSourceObject const~
* int i - an index of the source object array
* returns const string[&] - the source object at the index position
*/
const string& getSourceObject(unsigned long i) const
{ return m_sourceObjects[i]; }
/*
2.5.5 Method ~unsigned long getSourceObjectSize const~
* returns unsigned long - the size of the array of source objects
*/
unsigned long getSourceObjectSize() const
{ return m_sourceObjects.size(); }
/*
2.5.6 Method ~bool useChilds() const~
* we runnign on each darray index in parallel
*/
bool useChilds() const { return true; }
/*
2.6 Private Section
*/
private:
/*
2.6.1 Private Methods
*/
// n/a
/*
2.6.1 Private Members
*/
string m_cmd;
vector<string> m_sourceObjects;
/*
2.7 End of Class
*/
};
/*
3 Class ~DServerCmdExecute~
The class ~DServerCmdExecute~ provides the functionality of copying data of a
darray index to an index of another darray. It is also used for the ~put~
operator.This operator also performs a copy of the darray data, skipping
data of one index and replaceing it with new data
* derives from the class ~DServerCmd~
*/
class DServerCmdExecute
: public DServerCmd
{
/*
3.1 Private Default Constructor
* inherited from the class ~DServerCmd~
* may not be used!
*/
public:
/*
3.1 Constructor
*/
DServerCmdExecute()
: DServerCmd(DServerCmd::DS_CMD_COPY)
{}
/*
3.2 Destructor
*/
virtual ~DServerCmdExecute() {}
/*
3.3 Getter Methods
3.3.2 Method ~const string[&] getCmd const~
* returns const string[&] - the command
*/
const string& getCmd() const
{
const DServerCmdExecuteParam *p =
DServerCmd::getParam<DServerCmdExecuteParam>() ;
return p -> getCommand();
}
/*
3.3.3 Method ~const vector[<]string[>][&] getSourceObjects const~
* returns const vector[<]string[>][&] - the array of source objects
*/
const vector<string>& getSourceObjects() const
{
const DServerCmdExecuteParam *p =
DServerCmd::getParam<DServerCmdExecuteParam>() ;
return p -> getSourceObjects();
}
/*
3.3.4 Method ~const string[&] getSourceObject const~
* int i - an index of the source object array
* returns const string[&] - the source object at the index position
*/
const string& getSourceObject(unsigned long i) const
{
const DServerCmdExecuteParam *p =
DServerCmd::getParam<DServerCmdExecuteParam>() ;
return p -> getSourceObject(i);
}
/*
3.3.5 Method ~unsigned long getSourceObjectSize const~
* returns unsigned long - the size of the array of source objects
*/
unsigned long getSourceObjectSize() const
{
const DServerCmdExecuteParam *p =
DServerCmd::getParam<DServerCmdExecuteParam>() ;
return p -> getSourceObjectSize();
}
/*
3.3.3 Method ~string getInfo const~
* returns string - an informaiton string
*/
string getInfo() const
{
string fromNames;
for (unsigned long i = 0; i < getSourceObjectSize(); ++i)
fromNames += getSourceObject(i) + ", ";
return string("CMD-Execute from:" + fromNames + "(idx:" +
getIndexStr() + ") to " +
getWorker() -> getName() + getIndexStr());
}
/*
3.4 Running
3.4.1 Method ~void run~
method definition
*/
void run();
/*
3.5 Private Section
*/
private:
/*
3.5.1 Private Methods
*/
// n/a
/*
3.5.2 Private Members
*/
// n/a
/*
3.6 End of Class
*/
};
#endif // H_DSERVERCMDEXECUTE_H