131 lines
3.4 KiB
C++
131 lines
3.4 KiB
C++
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/*
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----
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This file is part of SECONDO.
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Copyright (C) 2007,
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Faculty of Mathematics and Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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1 How to write your own Secondo Application in C++
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This is a very small example describing how, an C++ programm can
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communicate with an Secondo Server.
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1.1 Includes
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*/
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#include <string>
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#include <iostream>
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#include <stdlib.h>
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#include "SecondoInterface.h"
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#include "SecondoInterfaceCS.h"
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#include "NestedList.h"
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#include "NList.h"
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using namespace std;
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int main(int argc, char** argv){
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// create an interface to the secondo server
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// the paramneter must be true to communicate as client
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SecondoInterface* si = new SecondoInterfaceCS(true,0,false);
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// define the name of the configuration file
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string config = "Config.ini";
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// read in runtime flags from the config file
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si->InitRTFlags(config);
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// set some variables needed to connect with the server
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string user="";
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string passwd="";
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string host="localhost";
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string port ="1234";
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string errMsg; // return param
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bool multiUser=true;
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// try to connect
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if(!si->Initialize(user,passwd,host,port,config,"",errMsg,multiUser)){
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// connection failed, handle error
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cerr << "Cannot initialize secondo system" << endl;
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cerr << "Error message = " << errMsg << endl;
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return 1;
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}
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// connected
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cout << "SecondoInterface successfully initialized" << endl;
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string command = "";
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NestedList* nl = si->GetNestedList();
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NList::setNLRef(nl);
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// let the user enter secondo commands until he/she eters quit
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while(command!="quit") {
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cout << "Enter Command >";
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getline(cin,command);
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if((command!="quit") && (command.length()>0)){
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cout << "send command " << command << endl;
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ListExpr res = nl->TheEmptyList(); // will contain the result
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SecErrInfo err; // will contain error information
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// this is the command to communicate with secondo
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si->Secondo(command, res, err);
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// check whether command was successfully
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if(err.code!=0){
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// if the error code is different to zero, an error is occurred
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cout << "Error during command. Error code :" << err.code << endl;
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cout << "Error message = " << err.msg << endl;
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} else {
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// command was successfully
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// do what ever you want to de with the result list
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// in this little example, the result is just printed out
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cout << "Command successfully processed" << endl;
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cout << "Result is:" << endl;
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cout << nl->ToString(res) << endl << endl;
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}
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}
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}
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// close connection
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si->Terminate();
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// destroy the interface
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delete si;
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return 0;
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}
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