src/CacheJsonToArticleConverter.cpp

   1 //! \file CacheJsonToArticleConverter.cpp
   2
   3 #include "CacheJsonToArticleConverter.h"
   4
   5 #include <json/json.h>
   6
   7 #include "WalkerException.h"
   8 #include "Article.h"
   9
  10 ArticleCollection& CacheJsonToArticleConverter::convertToArticle(std::string json,
  11         ArticleCollection& articleCache)
  12 {
  13     Json::Reader reader;
  14     Json::Value document;
  15     bool success = reader.parse(json, document, false);
  16
  17     if(!success) {
  18         throw WalkerException("Error parsing JSON");
  19     }
  20
  21     // get all "main" articles first
  22     for(auto& titleElement : document.getMemberNames()) {
  23         std::string title = titleElement;
  24
  25         Article* a = articleCache.get(title);
  26
  27         if(a == nullptr) {
  28             a = new Article(title);
  29             articleCache.add(a);
  30         }
  31
  32         auto links = document
  33                         .get(title, Json::Value::nullSingleton())
  34                         .get("forward_links", Json::Value::nullSingleton());
  35
  36         if(links.isNull()) {
  37             /* don't need to set article analyzed to false,
  38              * since that's the default */
  39             continue;
  40         }
  41
  42         a->setAnalyzed(true);
  43
  44         for(auto linkedArticle : links) {
  45             std::string linkedTitle = linkedArticle.asString();
  46             Article* la = articleCache.get(linkedTitle);
  47
  48             if(la == nullptr) {
  49                 la = new Article(linkedTitle);
  50                 articleCache.add(la);
  51             }
  52
  53             a->addLink(la);
  54         }
  55     }
  56
  57     return articleCache;
  58     /*
  59         a->setAnalyzed(true); ?
  60     */
  61 }