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// first.cpp
/**
* this is a good first example of how to use mongo from c++
*/
#include <iostream>
#include "mongo/client/dbclient.h"
using namespace std;
using namespace mongo;
void insert( DBClientConnection & conn , const char * name , int num ){
BSONObjBuilder obj;
obj.append( "name" , name );
obj.append( "num" , num );
conn.insert( "test.people" , obj.doneAndDecouple() );
}
int main(){
DBClientConnection conn;
string errmsg;
if ( ! conn.connect( "127.0.0.1" , errmsg ) ){
cout << "couldn't connect : " << errmsg << endl;
throw -11;
}
{ // clean up old data from any previous tests
BSONObjBuilder query;
conn.remove( "test.people" , query.doneAndDecouple() );
}
insert( conn , "eliot" , 15 );
insert( conn , "sara" , 23 );
{
BSONObjBuilder query;
auto_ptr<DBClientCursor> cursor = conn.query( "test.people" , query.doneAndDecouple() );
cout << "using cursor" << endl;
while ( cursor->more() ){
BSONObj obj = cursor->next();
cout << "\t" << obj.jsonString() << endl;
}
}
{
BSONObjBuilder query;
query.append( "name" , "eliot" );
BSONObj res = conn.findOne( "test.people" , query.doneAndDecouple() );
cout << res.isEmpty() << "\t" << res.jsonString() << endl;
}
{
BSONObjBuilder query;
query.append( "name" , "asd" );
BSONObj res = conn.findOne( "test.people" , query.doneAndDecouple() );
cout << res.isEmpty() << "\t" << res.jsonString() << endl;
}
}
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