/// <summary>
        /// Loads this <see cref="RssItem"/> using the supplied <see cref="XPathNavigator"/>.
        /// </summary>
        /// <param name="source">The <see cref="XPathNavigator"/> to extract information from.</param>
        /// <returns><b>true</b> if the <see cref="RssItem"/> was initialized using the supplied <paramref name="source"/>, otherwise <b>false</b>.</returns>
        /// <remarks>
        ///     This method expects the supplied <paramref name="source"/> to be positioned on the XML element that represents a <see cref="RssItem"/>.
        /// </remarks>
        /// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
        public bool Load(XPathNavigator source)
        {
            bool wasLoaded = false;

            Guard.ArgumentNotNull(source, "source");
            XmlNamespaceManager manager              = new XmlNamespaceManager(source.NameTable);
            XPathNavigator      authorNavigator      = source.SelectSingleNode("author", manager);
            XPathNavigator      commentsNavigator    = source.SelectSingleNode("comments", manager);
            XPathNavigator      descriptionNavigator = source.SelectSingleNode("description", manager);
            XPathNavigator      guidNavigator        = source.SelectSingleNode("guid", manager);
            XPathNavigator      linkNavigator        = source.SelectSingleNode("link", manager);
            XPathNavigator      publicationNavigator = source.SelectSingleNode("pubDate", manager);
            XPathNavigator      sourceNavigator      = source.SelectSingleNode("source", manager);
            XPathNavigator      titleNavigator       = source.SelectSingleNode("title", manager);

            XPathNodeIterator categoryIterator  = source.Select("category", manager);
            XPathNodeIterator enclosureIterator = source.Select("enclosure", manager);

            if (titleNavigator != null)
            {
                this.Title = titleNavigator.Value;
                wasLoaded  = true;
            }

            if (descriptionNavigator != null)
            {
                this.Description = descriptionNavigator.Value;
                wasLoaded        = true;
            }

            if (linkNavigator != null)
            {
                Uri link;
                if (Uri.TryCreate(linkNavigator.Value, UriKind.RelativeOrAbsolute, out link))
                {
                    this.Link = link;
                    wasLoaded = true;
                }
            }

            if (authorNavigator != null)
            {
                this.Author = authorNavigator.Value;
                wasLoaded   = true;
            }

            if (commentsNavigator != null)
            {
                Uri comments;
                if (Uri.TryCreate(commentsNavigator.Value, UriKind.RelativeOrAbsolute, out comments))
                {
                    this.Comments = comments;
                    wasLoaded     = true;
                }
            }

            if (guidNavigator != null)
            {
                RssGuid guid = new RssGuid();
                if (guid.Load(guidNavigator))
                {
                    this.Guid = guid;
                    wasLoaded = true;
                }
            }

            if (publicationNavigator != null)
            {
                DateTime publicationDate;
                if (SyndicationDateTimeUtility.TryParseRfc822DateTime(publicationNavigator.Value, out publicationDate))
                {
                    this.PublicationDate = publicationDate;
                    wasLoaded            = true;
                }
            }

            if (sourceNavigator != null)
            {
                RssSource sourceFeed = new RssSource();
                if (sourceFeed.Load(sourceNavigator))
                {
                    this.Source = sourceFeed;
                    wasLoaded   = true;
                }
            }

            if (categoryIterator != null && categoryIterator.Count > 0)
            {
                while (categoryIterator.MoveNext())
                {
                    RssCategory category = new RssCategory();
                    if (category.Load(categoryIterator.Current))
                    {
                        this.Categories.Add(category);
                    }
                }
            }

            if (enclosureIterator != null && enclosureIterator.Count > 0)
            {
                while (enclosureIterator.MoveNext())
                {
                    RssEnclosure enclosure = new RssEnclosure();
                    if (enclosure.Load(enclosureIterator.Current))
                    {
                        this.Enclosures.Add(enclosure);
                    }
                }
            }

            return(wasLoaded);
        }
Exemple #2
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        /// <summary>
        /// Loads this <see cref="RssItem"/> using the supplied <see cref="XPathNavigator"/> and <see cref="SyndicationResourceLoadSettings"/>.
        /// </summary>
        /// <param name="source">The <see cref="XPathNavigator"/> to extract information from.</param>
        /// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> used to configure the load operation.</param>
        /// <returns><b>true</b> if the <see cref="RssItem"/> was initialized using the supplied <paramref name="source"/>, otherwise <b>false</b>.</returns>
        /// <remarks>
        ///     This method expects the supplied <paramref name="source"/> to be positioned on the XML element that represents a <see cref="RssItem"/>.
        /// </remarks>
        /// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="settings"/> is a null reference (Nothing in Visual Basic).</exception>
        public bool Load(XPathNavigator source, SyndicationResourceLoadSettings settings)
        {
            //------------------------------------------------------------
            //	Local members
            //------------------------------------------------------------
            bool wasLoaded = false;

            //------------------------------------------------------------
            //	Validate parameter
            //------------------------------------------------------------
            Guard.ArgumentNotNull(source, "source");
            Guard.ArgumentNotNull(settings, "settings");

            //------------------------------------------------------------
            //	Create namespace resolver
            //------------------------------------------------------------
            XmlNamespaceManager manager = new XmlNamespaceManager(source.NameTable);

            //------------------------------------------------------------
            //	Attempt to extract syndication information
            //------------------------------------------------------------
            XPathNavigator authorNavigator      = source.SelectSingleNode("author", manager);
            XPathNavigator commentsNavigator    = source.SelectSingleNode("comments", manager);
            XPathNavigator descriptionNavigator = source.SelectSingleNode("description", manager);
            XPathNavigator guidNavigator        = source.SelectSingleNode("guid", manager);
            XPathNavigator linkNavigator        = source.SelectSingleNode("link", manager);
            XPathNavigator publicationNavigator = source.SelectSingleNode("pubDate", manager);
            XPathNavigator sourceNavigator      = source.SelectSingleNode("source", manager);
            XPathNavigator titleNavigator       = source.SelectSingleNode("title", manager);

            XPathNodeIterator categoryIterator  = source.Select("category", manager);
            XPathNodeIterator enclosureIterator = source.Select("enclosure", manager);

            //------------------------------------------------------------
            //	Load required/common item elements
            //------------------------------------------------------------
            if (titleNavigator != null)
            {
                this.Title = titleNavigator.Value;
                wasLoaded  = true;
            }

            if (descriptionNavigator != null)
            {
                this.Description = descriptionNavigator.Value;
                wasLoaded        = true;
            }

            if (linkNavigator != null)
            {
                Uri link;
                if (Uri.TryCreate(linkNavigator.Value, UriKind.RelativeOrAbsolute, out link))
                {
                    this.Link = link;
                    wasLoaded = true;
                }
            }

            //------------------------------------------------------------
            //	Load optional item elements
            //------------------------------------------------------------
            if (authorNavigator != null)
            {
                this.Author = authorNavigator.Value;
                wasLoaded   = true;
            }

            if (commentsNavigator != null)
            {
                Uri comments;
                if (Uri.TryCreate(commentsNavigator.Value, UriKind.RelativeOrAbsolute, out comments))
                {
                    this.Comments = comments;
                    wasLoaded     = true;
                }
            }

            if (guidNavigator != null)
            {
                RssGuid guid = new RssGuid();
                if (guid.Load(guidNavigator, settings))
                {
                    this.Guid = guid;
                    wasLoaded = true;
                }
            }

            if (publicationNavigator != null)
            {
                DateTime publicationDate;
                if (SyndicationDateTimeUtility.TryParseRfc822DateTime(publicationNavigator.Value, out publicationDate))
                {
                    this.PublicationDate = publicationDate;
                    wasLoaded            = true;
                }
            }

            if (sourceNavigator != null)
            {
                RssSource sourceFeed = new RssSource();
                if (sourceFeed.Load(sourceNavigator, settings))
                {
                    this.Source = sourceFeed;
                    wasLoaded   = true;
                }
            }

            //------------------------------------------------------------
            //	Load item collection elements
            //------------------------------------------------------------
            if (categoryIterator != null && categoryIterator.Count > 0)
            {
                while (categoryIterator.MoveNext())
                {
                    RssCategory category = new RssCategory();
                    if (category.Load(categoryIterator.Current, settings))
                    {
                        this.Categories.Add(category);
                    }
                }
            }

            if (enclosureIterator != null && enclosureIterator.Count > 0)
            {
                while (enclosureIterator.MoveNext())
                {
                    RssEnclosure enclosure = new RssEnclosure();
                    if (enclosure.Load(enclosureIterator.Current, settings))
                    {
                        this.Enclosures.Add(enclosure);
                    }
                }
            }

            //------------------------------------------------------------
            //	Attempt to extract syndication extension information
            //------------------------------------------------------------
            SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(source, settings);

            adapter.Fill(this);

            return(wasLoaded);
        }
Exemple #3
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        /// <summary>
        /// Loads this <see cref="RssItem"/> using the supplied <see cref="XPathNavigator"/> and <see cref="SyndicationResourceLoadSettings"/>.
        /// </summary>
        /// <param name="source">The <see cref="XPathNavigator"/> to extract information from.</param>
        /// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> used to configure the load operation.</param>
        /// <returns><b>true</b> if the <see cref="RssItem"/> was initialized using the supplied <paramref name="source"/>, otherwise <b>false</b>.</returns>
        /// <remarks>
        ///     This method expects the supplied <paramref name="source"/> to be positioned on the XML element that represents a <see cref="RssItem"/>.
        /// </remarks>
        /// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="ArgumentNullException">The <paramref name="settings"/> is a null reference (Nothing in Visual Basic).</exception>
        public bool Load(XPathNavigator source, SyndicationResourceLoadSettings settings)
        {
            //------------------------------------------------------------
            //	Local members
            //------------------------------------------------------------
            bool wasLoaded              = false;

            //------------------------------------------------------------
            //	Validate parameter
            //------------------------------------------------------------
            Guard.ArgumentNotNull(source, "source");
            Guard.ArgumentNotNull(settings, "settings");

            //------------------------------------------------------------
            //	Create namespace resolver
            //------------------------------------------------------------
            XmlNamespaceManager manager = new XmlNamespaceManager(source.NameTable);

            //------------------------------------------------------------
            //	Attempt to extract syndication information
            //------------------------------------------------------------
            XPathNavigator authorNavigator      = source.SelectSingleNode("author", manager);
            XPathNavigator commentsNavigator    = source.SelectSingleNode("comments", manager);
            XPathNavigator descriptionNavigator = source.SelectSingleNode("description", manager);
            XPathNavigator guidNavigator        = source.SelectSingleNode("guid", manager);
            XPathNavigator linkNavigator        = source.SelectSingleNode("link", manager);
            XPathNavigator publicationNavigator = source.SelectSingleNode("pubDate", manager);
            XPathNavigator sourceNavigator      = source.SelectSingleNode("source", manager);
            XPathNavigator titleNavigator       = source.SelectSingleNode("title", manager);

            XPathNodeIterator categoryIterator  = source.Select("category", manager);
            XPathNodeIterator enclosureIterator = source.Select("enclosure", manager);

            //------------------------------------------------------------
            //	Load required/common item elements
            //------------------------------------------------------------
            if (titleNavigator != null)
            {
                this.Title          = titleNavigator.Value;
                wasLoaded           = true;
            }

            if (descriptionNavigator != null)
            {
                this.Description    = descriptionNavigator.Value;
                wasLoaded           = true;
            }

            if (linkNavigator != null)
            {
                Uri link;
                if (Uri.TryCreate(linkNavigator.Value, UriKind.RelativeOrAbsolute, out link))
                {
                    this.Link       = link;
                    wasLoaded       = true;
                }
            }

            //------------------------------------------------------------
            //	Load optional item elements
            //------------------------------------------------------------
            if (authorNavigator != null)
            {
                this.Author         = authorNavigator.Value;
                wasLoaded           = true;
            }

            if (commentsNavigator != null)
            {
                Uri comments;
                if (Uri.TryCreate(commentsNavigator.Value, UriKind.RelativeOrAbsolute, out comments))
                {
                    this.Comments   = comments;
                    wasLoaded       = true;
                }
            }

            if (guidNavigator != null)
            {
                RssGuid guid = new RssGuid();
                if (guid.Load(guidNavigator, settings))
                {
                    this.Guid       = guid;
                    wasLoaded       = true;
                }
            }

            if (publicationNavigator != null)
            {
                DateTime publicationDate;
                if (SyndicationDateTimeUtility.TryParseRfc822DateTime(publicationNavigator.Value, out publicationDate))
                {
                    this.PublicationDate    = publicationDate;
                    wasLoaded               = true;
                }
            }

            if (sourceNavigator != null)
            {
                RssSource sourceFeed    = new RssSource();
                if (sourceFeed.Load(sourceNavigator, settings))
                {
                    this.Source     = sourceFeed;
                    wasLoaded       = true;
                }
            }

            //------------------------------------------------------------
            //	Load item collection elements
            //------------------------------------------------------------
            if (categoryIterator != null && categoryIterator.Count > 0)
            {
                while (categoryIterator.MoveNext())
                {
                    RssCategory category = new RssCategory();
                    if (category.Load(categoryIterator.Current, settings))
                    {
                        this.Categories.Add(category);
                    }
                }
            }

            if (enclosureIterator != null && enclosureIterator.Count > 0)
            {
                while (enclosureIterator.MoveNext())
                {
                    RssEnclosure enclosure  = new RssEnclosure();
                    if (enclosure.Load(enclosureIterator.Current, settings))
                    {
                        this.Enclosures.Add(enclosure);
                    }
                }
            }

            //------------------------------------------------------------
            //	Attempt to extract syndication extension information
            //------------------------------------------------------------
            SyndicationExtensionAdapter adapter = new SyndicationExtensionAdapter(source, settings);
            adapter.Fill(this);

            return wasLoaded;
        }