cppcms::triggers_recorder Class Reference

triggers_recorder is a class that allows you to record all triggers added in certain scope. More...

#include <cppcms/cache_interface.h>

Inheritance diagram for cppcms::triggers_recorder:

List of all members.

Public Member Functions
	triggers_recorder (cache_interface &)
	~triggers_recorder ()
std::set< std::string >	detach ()
Friends
class	cache_interface

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Detailed Description

triggers_recorder is a class that allows you to record all triggers added in certain scope.

It is useful to have have "sub-dependencies" for smaller parts.

For example:

   if(cache().fetch_page("news"))
      return;
      // something there
      if(cache().fetch_frame("politics",text))
        response().out() << text;
      else {
        copy_filter politics(respone().out());
        triggers_recorder politics_triggers(cache());
        // some thing else there
        for(int i=0;i<articles.size();i++) {
          if(cache().fetch_frame(article_tag,text);
            response().out() << text;
          else {
            copy_filter article(respone().out());
            // generate article 
            cache().store_frame(article_tag,article.detach()); 
          }
       }
       cache().store_frame("polotics",
                    politics.detach(), // the recorded content of politics
                    politics_triggers.detach());
      }
      ...

So tag "politics" records all added triggers like "article_234" and now rise of "article_234" would invalidate "politics" section as well as we automatically record all triggers inserted in triggers_recorder scope.

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Constructor & Destructor Documentation

cppcms::triggers_recorder::triggers_recorder

(

cache_interface &

)

Start recording all triggers

cppcms::triggers_recorder::~triggers_recorder

(

)

Stop recording triggers

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Member Function Documentation

std::set<std::string> cppcms::triggers_recorder::detach

(

)

Stop recording triggers and get the set of all triggers being added in its scope

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

• cppcms/cache_interface.h