private CategoriesList BuildCategories()
{
CategoriesList categoriesList = new CategoriesList();
try
{
string filepath = System.Web.Hosting.HostingEnvironment.MapPath("~/data/Categories.xml");
XmlDocument xmlDocument = new XMLConnector().GetXMLDocument(filepath);
XmlNodeList categoryNodes = xmlDocument.SelectNodes("categories/category");
if (categoryNodes != null)
{
foreach (XmlNode categoryNode in categoryNodes)
{
string id = categoryNode.Attributes["id"].Value;
CategoryItem categoryItem = new CategoryItem(id);
categoryItem.Title = categoryNode.Attributes["title"].Value;
XmlNodeList providerMappingsNodes = categoryNode.SelectNodes("provider-mappings/provider-mapping");
if (providerMappingsNodes != null)
{
ProviderMappingList providerMappingList = categoryItem.ProviderMappingList;
foreach (XmlNode providerMappingNode in providerMappingsNodes)
{
ProviderMapping providerMapping = new ProviderMapping();
providerMapping.Provider = (ProviderEnum) Enum.Parse(typeof(ProviderEnum), providerMappingNode.Attributes["id"].Value);
providerMapping.Category = providerMappingNode.Attributes["category"].Value;
providerMappingList.Add(providerMapping);
}
}
XmlNodeList topicsNodes = categoryNode.SelectNodes("topics/topic");
if (topicsNodes != null)
{
TopicList topicList = categoryItem.TopicList;
foreach (XmlNode topicNode in topicsNodes)
{
string title = topicNode.Attributes["title"].Value;
TopicItem topicItem = new TopicItem(title, title);
topicList.Add(topicItem);
}
}
categoriesList.Add(categoryItem);
}
}
}
catch (Exception exception)
{
ErrorService.Log("CategorizationService", "BuildCategories", null, exception);
}
return categoriesList;
}
public Channel GetChannel(string url)
{
string path = "rss/channel/item";
XmlDocument rssDoc = new XMLConnector().GetXMLDocument(url);
Channel channel = new Channel();
XmlNodeList rssItems = rssDoc.SelectNodes(path);
if (rssItems != null)
{
foreach (XmlNode rssItem in rssItems)
{
Item item = new Item();
foreach (XmlNode childNode in rssItem.ChildNodes)
if (childNode.Name == "title")
{
item.Title = childNode.InnerText;
}
else if (childNode.Name == "link")
{
item.URL = childNode.InnerText;
}
else if (childNode.Name == "description")
{
item.Description = childNode.InnerText;
}
else
{
item.Set(childNode.Name, childNode.InnerText);
}
channel.Add(item);
}
}
return channel;
}
private SearchResultList SearchNews(SearchContext searchContext)
{
SearchResultList resultList = new SearchResultList();
try
{
string query = searchContext.Query;
int page = searchContext.Page;
int count = searchContext.Count;
int start = (page - 1) * count;
string urlTemplate = "http://boss.yahooapis.com/ysearch/news/v1/{0}?appid={1}&start={2}&count={3}&orderby=date&age=7d&style=raw&format=xml";
string api = ConfigService.GetConfig(ConfigKeys.YAHOO_API_KEY, "");
string url = string.Format(urlTemplate, query, api, start, count);
XmlDocument xmlDocument = new XMLConnector().GetXMLDocument(url);
XmlNamespaceManager nsmanager = new XmlNamespaceManager(xmlDocument.NameTable);
nsmanager.AddNamespace("default", "http://www.inktomi.com/");
XmlNodeList resultNodes = xmlDocument.SelectNodes("default:ysearchresponse/default:resultset_news/default:result", nsmanager);
if (resultNodes != null)
{
foreach (XmlNode resultNode in resultNodes)
{
SearchResultItem resultItem = new SearchResultItem();
resultItem.Provider = ProviderEnum.Yahoo;
XmlNode titleNode = resultNode.SelectSingleNode("default:title", nsmanager);
if (titleNode != null)
{
resultItem.Title = titleNode.InnerText;
}
XmlNode abstractNode = resultNode.SelectSingleNode("default:abstract", nsmanager);
if (abstractNode != null)
{
string abstractText = abstractNode.InnerText;
abstractText = TextCleaner.StripTag(abstractText, "<", ">"); // remove any html tags
abstractText = TextCleaner.RemoveHtml(abstractText);
resultItem.Abstract = abstractText;
}
XmlNode urlNode = resultNode.SelectSingleNode("default:url", nsmanager);
if (urlNode != null)
{
resultItem.URL = urlNode.InnerText;
}
XmlNode sourceNode = resultNode.SelectSingleNode("default:source", nsmanager);
if (sourceNode != null)
{
resultItem.Source = sourceNode.InnerText;
}
XmlNode dateNode = resultNode.SelectSingleNode("default:date", nsmanager);
XmlNode timeNode = resultNode.SelectSingleNode("default:time", nsmanager);
if (dateNode != null && timeNode != null)
{
//format <date>2009/11/20</date><time>01:03:57</time>
string dateString = dateNode.InnerText + " " + timeNode.InnerText + " +0";
if (dateString != null)
{
DateTime publishedDate = DateParser.Parse(dateString, "yyyy'/'MM'/'dd HH':'mm':'ss z");
resultItem.PublishedDate = publishedDate;
}
}
resultList.Add(resultItem);
}
}
}
catch (Exception exception)
{
ErrorService.Log("YahooSearchService", "SearchNews", searchContext.ToString(), exception);
}
return resultList;
}
public SuggestionsList GetSuggestions(SuggestionsContext suggestionsContext)
{
SuggestionsList suggestionsList = new SuggestionsList();
try
{
string query = suggestionsContext.Query;
string urlTemplate = "http://google.com/complete/search?output=toolbar&q={0}";
string url = string.Format(urlTemplate, query);
XmlDocument xmlDocument = new XMLConnector().GetXMLDocument(url); ;
XmlNodeList resultNodes = xmlDocument.SelectNodes("toplevel/CompleteSuggestion");
if (resultNodes != null)
{
foreach (XmlNode resultNode in resultNodes)
{
string name = null;
double numberQueries = 0;
XmlNode suggestionNode = resultNode.SelectSingleNode("suggestion");
if (suggestionNode != null)
{
XmlAttribute dataAttribute = suggestionNode.Attributes["data"];
if (dataAttribute != null)
{
name = dataAttribute.Value;
}
}
XmlNode numQueriesNode = resultNode.SelectSingleNode("num_queries");
if (numQueriesNode != null)
{
XmlAttribute intAttribute = numQueriesNode.Attributes["int"];
if (intAttribute != null)
{
string numQuery = intAttribute.Value;
try {
numberQueries = double.Parse(numQuery);
} catch (Exception) {}
}
}
if (name != null && numberQueries > 0)
{
SuggestionItem suggestionItem = new SuggestionItem(name);
suggestionItem.Provider = ProviderEnum.Google;
suggestionItem.NumberQueries = numberQueries;
suggestionItem.Weight = CalculateWeight(numberQueries);
suggestionsList.Add(suggestionItem);
}
}
}
}
catch (Exception exception)
{
ErrorService.Log("GoogleSuggestionsService", "GetSuggestions", suggestionsContext.ToString(), exception);
}
return suggestionsList;
}
