Code:
/ WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / NetFx35 / System.ServiceModel.Web / System / ServiceModel / Syndication / Rss20ItemFormatter.cs / 1 / Rss20ItemFormatter.cs
//------------------------------------------------------------ // Copyright (c) Microsoft Corporation. All rights reserved. //----------------------------------------------------------- namespace System.ServiceModel.Syndication { using System; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Globalization; using System.Text; using System.Xml; using System.Xml.Serialization; using System.Diagnostics.CodeAnalysis; using System.Xml.Schema; [XmlRoot(ElementName = Rss20Constants.ItemTag, Namespace = Rss20Constants.Rss20Namespace)] public class Rss20ItemFormatter : SyndicationItemFormatter, IXmlSerializable { Rss20FeedFormatter feedSerializer; Type itemType; bool preserveAttributeExtensions; bool preserveElementExtensions; bool serializeExtensionsAsAtom; public Rss20ItemFormatter() : this(typeof(SyndicationItem)) { } public Rss20ItemFormatter(Type itemTypeToCreate) : base() { if (itemTypeToCreate == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("itemTypeToCreate"); } if (!typeof(SyndicationItem).IsAssignableFrom(itemTypeToCreate)) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument("itemTypeToCreate", SR2.GetString(SR2.InvalidObjectTypePassed, "itemTypeToCreate", "SyndicationItem")); } this.feedSerializer = new Rss20FeedFormatter(); this.feedSerializer.PreserveAttributeExtensions = this.preserveAttributeExtensions = true; this.feedSerializer.PreserveElementExtensions = this.preserveElementExtensions = true; this.feedSerializer.SerializeExtensionsAsAtom = this.serializeExtensionsAsAtom = true; this.itemType = itemTypeToCreate; } public Rss20ItemFormatter(SyndicationItem itemToWrite) : this(itemToWrite, true) { } public Rss20ItemFormatter(SyndicationItem itemToWrite, bool serializeExtensionsAsAtom) : base(itemToWrite) { // No need to check that the parameter passed is valid - it is checked by the c'tor of the base class this.feedSerializer = new Rss20FeedFormatter(); this.feedSerializer.PreserveAttributeExtensions = this.preserveAttributeExtensions = true; this.feedSerializer.PreserveElementExtensions = this.preserveElementExtensions = true; this.feedSerializer.SerializeExtensionsAsAtom = this.serializeExtensionsAsAtom = serializeExtensionsAsAtom; this.itemType = itemToWrite.GetType(); } public bool PreserveAttributeExtensions { get { return this.preserveAttributeExtensions; } set { this.preserveAttributeExtensions = value; this.feedSerializer.PreserveAttributeExtensions = value; } } public bool PreserveElementExtensions { get { return this.preserveElementExtensions; } set { this.preserveElementExtensions = value; this.feedSerializer.PreserveElementExtensions = value; } } public bool SerializeExtensionsAsAtom { get { return this.serializeExtensionsAsAtom; } set { this.serializeExtensionsAsAtom = value; this.feedSerializer.SerializeExtensionsAsAtom = value; } } public override string Version { get { return SyndicationVersions.Rss20; } } protected Type ItemType { get { return this.itemType; } } public override bool CanRead(XmlReader reader) { if (reader == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("reader"); } return reader.IsStartElement(Rss20Constants.ItemTag, Rss20Constants.Rss20Namespace); } [SuppressMessage("Microsoft.Design", "CA1033:InterfaceMethodsShouldBeCallableByChildTypes", Justification = "The IXmlSerializable implementation is only for exposing under WCF DataContractSerializer. The funcionality is exposed to derived class through the ReadFrom\\WriteTo methods")] XmlSchema IXmlSerializable.GetSchema() { return null; } [SuppressMessage("Microsoft.Design", "CA1033:InterfaceMethodsShouldBeCallableByChildTypes", Justification = "The IXmlSerializable implementation is only for exposing under WCF DataContractSerializer. The funcionality is exposed to derived class through the ReadFrom\\WriteTo methods")] void IXmlSerializable.ReadXml(XmlReader reader) { if (reader == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("reader"); } SyndicationFeedFormatter.TraceItemReadBegin(); ReadItem(reader); SyndicationFeedFormatter.TraceItemReadEnd(); } [SuppressMessage("Microsoft.Design", "CA1033:InterfaceMethodsShouldBeCallableByChildTypes", Justification = "The IXmlSerializable implementation is only for exposing under WCF DataContractSerializer. The funcionality is exposed to derived class through the ReadFrom\\WriteTo methods")] void IXmlSerializable.WriteXml(XmlWriter writer) { if (writer == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("writer"); } SyndicationFeedFormatter.TraceItemWriteBegin(); WriteItem(writer); SyndicationFeedFormatter.TraceItemWriteEnd(); } public override void ReadFrom(XmlReader reader) { SyndicationFeedFormatter.TraceItemReadBegin(); if (!CanRead(reader)) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new XmlException(SR2.GetString(SR2.UnknownItemXml, reader.LocalName, reader.NamespaceURI))); } ReadItem(reader); SyndicationFeedFormatter.TraceItemReadEnd(); } public override void WriteTo(XmlWriter writer) { if (writer == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("writer"); } SyndicationFeedFormatter.TraceItemWriteBegin(); writer.WriteStartElement(Rss20Constants.ItemTag, Rss20Constants.Rss20Namespace); WriteItem(writer); writer.WriteEndElement(); SyndicationFeedFormatter.TraceItemWriteEnd(); } protected override SyndicationItem CreateItemInstance() { return SyndicationItemFormatter.CreateItemInstance(this.itemType); } void ReadItem(XmlReader reader) { SetItem(CreateItemInstance()); feedSerializer.ReadItemFrom(XmlDictionaryReader.CreateDictionaryReader(reader), this.Item); } void WriteItem(XmlWriter writer) { if (this.Item == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR2.GetString(SR2.ItemFormatterDoesNotHaveItem))); } XmlDictionaryWriter w = XmlDictionaryWriter.CreateDictionaryWriter(writer); feedSerializer.WriteItemContents(w, this.Item); } } [XmlRoot(ElementName = Rss20Constants.ItemTag, Namespace = Rss20Constants.Rss20Namespace)] public class Rss20ItemFormatter: Rss20ItemFormatter, IXmlSerializable where TSyndicationItem : SyndicationItem, new () { public Rss20ItemFormatter() : base(typeof(TSyndicationItem)) { } public Rss20ItemFormatter(TSyndicationItem itemToWrite) : base(itemToWrite) { } public Rss20ItemFormatter(TSyndicationItem itemToWrite, bool serializeExtensionsAsAtom) : base(itemToWrite, serializeExtensionsAsAtom) { } protected override SyndicationItem CreateItemInstance() { return new TSyndicationItem(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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