multi_index composite_key replace with iterator
- by Rohit
Is there anyway to loop through an index in a boost::multi_index and perform a replace?
#include <iostream>
#include <string>
#include <boost/multi_index_container.hpp>
#include <boost/multi_index/composite_key.hpp>
#include <boost/multi_index/member.hpp>
#include <boost/multi_index/ordered_index.hpp>
using namespace boost::multi_index;
using namespace std;
struct name_record
{
public:
name_record(string given_name_,string family_name_,string other_name_)
{
given_name=given_name_;
family_name=family_name_;
other_name=other_name_;
}
string given_name;
string family_name;
string other_name;
string get_name() const { return given_name + " " + family_name + " " + other_name; }
void setnew(string chg)
{
given_name = given_name + chg;
family_name = family_name + chg;
}
};
struct NameIndex{};
typedef multi_index_container<
name_record,
indexed_by<
ordered_non_unique<
tag<NameIndex>,
composite_key
<
name_record,
BOOST_MULTI_INDEX_MEMBER(name_record,string, name_record::given_name),
BOOST_MULTI_INDEX_MEMBER(name_record,string, name_record::family_name)
>
>
>
> name_record_set;
typedef boost::multi_index::index<name_record_set,NameIndex>::type::iterator IteratorType;
typedef boost::multi_index::index<name_record_set,NameIndex>::type NameIndexType;
void printContainer(name_record_set & ns)
{
cout << endl << "PrintContainer" << endl << "-------------" << endl;
IteratorType it1 = ns.begin();
IteratorType it2 = ns.end ();
while (it1 != it2)
{
cout<<it1->get_name()<<endl;
it1++;
}
cout << "--------------" << endl << endl;
}
void modifyContainer(name_record_set & ns)
{
cout << endl << "ModifyContainer" << endl << "-------------" << endl;
IteratorType it3;
IteratorType it4;
NameIndexType & idx1 = ns.get<NameIndex>();
IteratorType it1 = idx1.begin();
IteratorType it2 = idx1.end();
while (it1 != it2)
{
cout<<it1->get_name()<<endl;
name_record nr = *it1;
nr.setnew("_CHG");
bool res = idx1.replace(it1,nr);
cout << "result is: " << res << endl;
it1++;
}
cout << "--------------" << endl << endl;
}
int main()
{
name_record_set ns;
ns.insert( name_record("Joe","Smith","ENTRY1") );
ns.insert( name_record("Robert","Brown","ENTRY2") );
ns.insert( name_record("Robert","Nightingale","ENTRY3") );
ns.insert( name_record("Marc","Tuxedo","ENTRY4") );
printContainer (ns);
modifyContainer (ns);
printContainer (ns);
return 0;
}
PrintContainer
-------------
Joe Smith ENTRY1
Marc Tuxedo ENTRY4
Robert Brown ENTRY2
Robert Nightingale ENTRY3
--------------
ModifyContainer
-------------
Joe Smith ENTRY1
result is: 1
Marc Tuxedo ENTRY4
result is: 1
Robert Brown ENTRY2
result is: 1
--------------
PrintContainer
-------------
Joe_CHG Smith_CHG ENTRY1
Marc_CHG Tuxedo_CHG ENTRY4
Robert Nightingale ENTRY3
Robert_CHG Brown_CHG ENTRY2
--------------
