FilterGroupBy Class Reference

The implementation of the "groupBy" filter. More...

Classes
struct	ListElem
class	SortList

Static Public Member Functions
static TemplateVariant	apply (const TemplateVariant &v, const TemplateVariant &args)

Static Private Member Functions
static QCString	determineSortKey (TemplateStructIntf *s, const QCString &attribName)

Detailed Description

The implementation of the "groupBy" filter.

Definition at line 957 of file template.cpp.

Member Function Documentation

static TemplateVariant FilterGroupBy::apply ( const TemplateVariant &  v, const TemplateVariant &  args  )

inlinestatic

Definition at line 976 of file template.cpp.

References TemplateList::alloc(), TemplateList::append(), TemplateListIntf::createIterator(), TemplateListIntf::ConstIterator::current(), determineSortKey(), FilterGroupBy::ListElem::key, TemplateVariant::List, TemplateVariant::String, TemplateListIntf::ConstIterator::toFirst(), TemplateVariant::toList(), TemplateListIntf::ConstIterator::toNext(), TemplateVariant::toString(), TemplateVariant::toStruct(), TemplateVariant::type(), and FilterGroupBy::ListElem::value.

    {
      if (v.type()==TemplateVariant::List && args.type()==TemplateVariant::String)
      {
        //printf("FilterListSort::apply: v=%s args=%s\n",v.toString().data(),args.toString().data());
        TemplateListIntf::ConstIterator *it = v.toList()->createIterator();

        TemplateVariant item;
        TemplateList *result = TemplateList::alloc();

        // create list of items based on v using the data in args as a sort key
        SortList sortList;
        for (it->toFirst();(it->current(item));it->toNext())
        {
          TemplateStructIntf *s = item.toStruct();
          if (s)
          {
            QCString sortKey = determineSortKey(s,args.toString());
            sortList.append(new ListElem(sortKey,item));
            //printf("sortKey=%s\n",sortKey.data());
          }
        }
        delete it;

        // sort the list
        sortList.sort();

        // add sorted items to the result list
        QListIterator<ListElem> sit(sortList);
        ListElem *elem;
        TemplateList *groupList=0;
        QCString prevKey;
        for (sit.toFirst();(elem=sit.current());++sit)
        {
          if (groupList==0 || elem->key!=prevKey)
          {
            groupList = TemplateList::alloc();
            result->append(groupList);
            prevKey = elem->key;
          }
          groupList->append(elem->value);
        }
        return result;
      }
      return v;
    }

static QCString FilterGroupBy::determineSortKey ( TemplateStructIntf *  s, const QCString &  attribName  )

inlinestaticprivate

Definition at line 1024 of file template.cpp.

References TemplateStructIntf::get(), and TemplateVariant::toString().

Referenced by apply().

    {
       TemplateVariant v = s->get(attribName);
       return v.toString();
    }

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The documentation for this class was generated from the following file:

• template.cpp