dcoprss/query.cpp

   1 /* $Id$ */
   2
   3 /***************************************************************************
   4                           query.cpp  -  A query interface to select RSS feeds.
   5                              -------------------
   6     begin                : Saturday 15 February 2003
   7     copyright            : (C) 2003 by Ian Reinhart Geiser
   8     email                : geiseri@kde.org
   9  ***************************************************************************/
  10
  11 /***************************************************************************
  12  *                                                                         *
  13  *   This program is free software; you can redistribute it and/or modify  *
  14  *   it under the terms of the GNU General Public License as published by  *
  15  *   the Free Software Foundation; either version 2 of the License, or     *
  16  *   (at your option) any later version.                                   *
  17  *                                                                         *
  18  ***************************************************************************/
  19 #include "cache.h"
  20 #include "query.h"
  21
  22 #include <kdebug.h>
  23 #include <krfcdate.h>
  24
  25 #include "service.h"
  26 #include "xmlrpciface.h"
  27
  28 using KXMLRPC::Server;
  29
  30 void SlotCaller::call( QObject *object, const char *slot,
  31                        const KXMLRPC::Query::Result &result )
  32 {
  33         SlotCaller caller;
  34         connect( &caller, SIGNAL( signal( const KXMLRPC::Query::Result &) ),
  35                  object, slot );
  36         emit caller.signal( result );
  37 }
  38
  39 QueryService::QueryService( RSSService *service ) : QObject(), DCOPObject( "RSSQuery" ),
  40         m_service( service )
  41 {
  42         m_xmlrpcServer = new KXMLRPC::Server( KURL( "http://www.syndic8.com/xmlrpc.php"), this );
  43 }
  44
  45 QStringList QueryService::listActive()
  46 {
  47         if ( !m_service )
  48                 return QStringList();
  49         return m_service->list();
  50 }
  51
  52 void QueryService::cachedCall( const QString &method,
  53                                const QValueList<QVariant> &args,
  54                                const char *slot )
  55 {
  56         kdDebug() << "Calling " << method << endl;
  57
  58         const QString cacheKey = Cache::getCacheKey( m_xmlrpcServer->url().url(),
  59                                                      method, args );
  60
  61         CacheEntry *cacheEntry = Cache::self().find( cacheKey );
  62         if ( cacheEntry != 0 && cacheEntry->isValid() ) {
  63                 kdDebug() << "Using cached result." << endl;
  64                 SlotCaller::call( this, slot, cacheEntry->result() );
  65         } else {
  66                 kdDebug() << "No cached result found, querying server." << endl;
  67                 m_xmlrpcServer->call( method, args, this, slot );
  68         }
  69 }
  70
  71 void QueryService::updateCache( const KXMLRPC::Query::Result &result )
  72 {
  73         const QString cacheKey = Cache::getCacheKey( result.server(),
  74                                                      result.method(),
  75                                                      result.args() );
  76
  77         CacheEntry *cacheEntry = Cache::self().find( cacheKey );
  78         if ( cacheEntry == 0 ) {
  79                 kdDebug() << "Inserting returned result into cache." << endl;
  80                 Cache::self().insert( cacheKey, result );
  81         }
  82 }
  83
  84 void QueryService::findFeeds( const QString &query )
  85 {
  86         kdDebug() << "QueryService::findFeeds()" << endl;
  87
  88         QStringList args;
  89         args << query << "headlines_rank";
  90
  91         cachedCall( "syndic8.FindFeeds", Server::toVariantList( args ),
  92                     SLOT( slotFoundFeeds( const KXMLRPC::Query::Result & ) ) );
  93 }
  94
  95 void QueryService::findSites( const QString& query )
  96 {
  97         kdDebug() << "QueryService::findSites()" << endl;
  98
  99         cachedCall( "syndic8.FindSites", Server::toVariantList( query ),
 100                     SLOT( slotFoundFeeds( const KXMLRPC::Query::Result & ) ) );
 101 }
 102
 103 void QueryService::getFeedInfo( const QVariant& ids )
 104 {
 105         kdDebug() << "QueryService::getFeedInfo()" << endl;
 106
 107         cachedCall( "syndic8.GetFeedInfo", Server::toVariantList( ids ),
 108                     SLOT( slotGotFeedInfo( const KXMLRPC::Query::Result & ) ) );
 109 }
 110
 111 void QueryService::getCategories( const QString &category )
 112 {
 113         kdDebug() << "QueryService::getCategories()" << endl;
 114
 115         if ( category == "Top" ) {
 116                 cachedCall( "syndic8.GetCategoryRoots", Server::toVariantList( QString::fromLatin1( "DMOZ" ) ),
 117                             SLOT( slotGotCategories( const KXMLRPC::Query::Result & ) ) );
 118         } else {
 119                 QStringList args;
 120                 args << "DMOZ" << category;
 121                 cachedCall( "syndic8.GetCategoryChildren", Server::toVariantList( args ),
 122                             SLOT( slotGotCategories( const KXMLRPC::Query::Result & ) ) );
 123         }
 124 }
 125
 126 void QueryService::getFeedsInCategory( const QString &category )
 127 {
 128         kdDebug() << "QueryService::getFeedsInCategory()" << endl;
 129
 130         QStringList args;
 131         args << "DMOZ" << category;
 132
 133         cachedCall( "syndic8.GetFeedsInCategory", Server::toVariantList( args ),
 134                     SLOT( slotGotFeedsInCategory( const KXMLRPC::Query::Result & ) ) );
 135 }
 136
 137 void QueryService::slotFoundFeeds( const KXMLRPC::Query::Result &result )
 138 {
 139         kdDebug() << "QueryService::slotFoundFeeds()" << endl;
 140         if ( !result.success() ) {
 141                 kdWarning() << "Failed to query for feeds: " << result.errorString() << endl;
 142                 return;
 143         }
 144
 145         updateCache( result );
 146
 147         QValueList<int> ids;
 148
 149         const QValueList<QVariant> values = result.data()[ 0 ].toList();
 150         QValueList<QVariant>::ConstIterator it = values.begin();
 151         QValueList<QVariant>::ConstIterator end = values.end();
 152         for ( ; it != end; ++it ) {
 153                 ids << ( *it ).toInt();
 154                 kdDebug() << "Found feed #" << ( *it ).toInt() << endl;
 155         }
 156         feedIds( ids );
 157 }
 158
 159 void QueryService::slotGotFeedInfo( const KXMLRPC::Query::Result &result )
 160 {
 161         kdDebug() << "QueryService::slotGotFeedInfo()" << endl;
 162         if ( !result.success() ) {
 163                 kdWarning() << "Failed to get feed info: " << result.errorString() << endl;
 164                 return;
 165         }
 166
 167         updateCache( result );
 168
 169         QMap<QString, QString> links;
 170         QValueList<RSSNewsFeed> feeds;
 171
 172         const QValueList<QVariant> feedInfos = result.data();
 173         QValueList<QVariant>::ConstIterator it = feedInfos.begin();
 174         QValueList<QVariant>::ConstIterator end = feedInfos.end();
 175         for ( ; it != end; ++it ) {
 176                 const QMap<QString, QVariant> feedInfo = ( *it ).toMap();
 177
 178                 const QString name = feedInfo[ "sitename" ].toString();
 179                 const QString link = feedInfo[ "dataurl" ].toString();
 180                 links[ name ] = link;
 181
 182                 RSSNewsFeed feed;
 183                 feed.m_id = feedInfo[ "feedid" ].toUInt();
 184                 feed.m_name = feedInfo[ "sitename" ].toString();
 185                 feed.m_homePage = feedInfo[ "siteurl" ].toString();
 186                 feed.m_sourceFile = feedInfo[ "dataurl" ].toString();
 187                 feed.m_imageUrl = feedInfo[ "imageurl" ].toString();
 188                 feed.m_webmaster = feedInfo[ "webmaster" ].toString();
 189                 feed.m_editor = feedInfo[ "editor" ].toString();
 190                 feed.m_publisher = feedInfo[ "publisher" ].toString();
 191                 feed.m_creator = feedInfo[ "creator" ].toString();
 192                 QDateTime dateTime;
 193                 dateTime.setTime_t( KRFCDate::parseDate( feedInfo[ "date_created" ].toString() ) );
 194                 feed.m_dateCreated = dateTime;
 195                 dateTime.setTime_t( KRFCDate::parseDate( feedInfo[ "date_approved" ].toString() ) );
 196                 feed.m_dateApproved = dateTime;
 197                 dateTime.setTime_t( KRFCDate::parseDate( feedInfo[ "date_xml_changed" ].toString() ) );
 198                 feed.m_dateXmlChanged = dateTime;
 199                 feed.m_fetchable = feedInfo[ "fetchable" ].toBool();
 200                 feed.m_description = feedInfo[ "description" ].toString();
 201                 feed.m_origin = feedInfo[ "origin" ].toString();
 202                 feed.m_languageCode = feedInfo[ "lang_code" ].toString();
 203                 feed.m_status = feedInfo[ "status" ].toString();
 204                 feed.m_version = feedInfo[ "rss_version" ].toString();
 205                 feed.m_views = feedInfo[ "views" ].toUInt();
 206                 feed.m_headlinesPerDay = feedInfo[ "headlines_per_day" ].toUInt();
 207                 feed.m_headlinesRank = feedInfo[ "headlines_rank" ].toUInt();
 208                 feed.m_toolkit = feedInfo[ "toolkit" ].toString();
 209                 feed.m_toolkitVersion = feedInfo[ "toolkit_version" ].toString();
 210                 feed.m_pollingInterval = feedInfo[ "cur_polling_interval" ].toUInt();
 211                 dateTime.setTime_t( feedInfo[ "last_poll_time" ].toUInt() );
 212                 feed.m_lastPoll = dateTime;
 213                 // ### feed.m_categories missing here!
 214
 215                 feeds << feed;
 216
 217                 kdDebug() << "Retrieved data for newsfeed '" << name << "' <" << link << ">" << endl;
 218         }
 219
 220         feedInfo( links );
 221         feedInfo( feeds );
 222 }
 223
 224 void QueryService::slotGotCategories( const KXMLRPC::Query::Result &result )
 225 {
 226         kdDebug() << "QueryService::slotGotCategories()" << endl;
 227         if ( !result.success() ) {
 228                 kdWarning() << "Failed to get the list of categories: " << result.errorString() << endl;
 229                 return;
 230         }
 231
 232         updateCache( result );
 233
 234         QStringList categories;
 235
 236         const QValueList<QVariant> cats = result.data()[ 0 ].toList();
 237         QValueList<QVariant>::ConstIterator it = cats.begin();
 238         QValueList<QVariant>::ConstIterator end = cats.end();
 239         for (  ; it != end; ++it )
 240                 categories << (  *it ).toString();
 241
 242         kdDebug() << "Got categories: " << categories.join(  ", " ) << endl;
 243         gotCategories(  categories );
 244
 245 }
 246
 247 void QueryService::slotGotFeedsInCategory( const KXMLRPC::Query::Result &result )
 248 {
 249         kdDebug() << "QueryService::slotGotFeedsInCategory()" << endl;
 250         if ( !result.success() ) {
 251                 kdWarning() << "Failed to get the feeds in the given category: " << result.errorString() << endl;
 252                 return;
 253         }
 254
 255         updateCache( result );
 256
 257         QValueList<int> ids;
 258
 259         const QValueList<QVariant> values = result.data()[ 0 ].toList();
 260         QValueList<QVariant>::ConstIterator it = values.begin();
 261         QValueList<QVariant>::ConstIterator end = values.end();
 262         for (  ; it != end; ++it ) {
 263                 ids << (  *it ).toInt();
 264                 kdDebug() << "Got feed in category: #" << ( *it ).toInt() << endl;
 265         }
 266
 267         gotFeedsInCategory(  ids );
 268 }
 269
 270 #include "query.moc"
 271 // vim:ts=4:sw=4:noet