/// <summary>
/// Writes the context attributes.
/// </summary>
/// <param name="writer">The writer.</param>
/// <param name="data">The data.</param>
protected virtual void WriteContextAttributes(XmlWriter writer, XacmlContextAttributes data) {
Contract.Requires<ArgumentNullException>(writer != null);
Contract.Requires<ArgumentNullException>(data != null);
writer.WriteStartElement(XacmlConstants.Prefixes.Context, XacmlConstants.ElementNames.Attributes, this.version.NamespacePolicy);
writer.WriteAttributeString(XacmlConstants.AttributeNames.Category, data.Category.OriginalString);
if (data.Id != null) {
writer.WriteAttributeString(XacmlConstants.Prefixes.Xml, XacmlConstants.AttributeNames.Id, XacmlConstants.Namespaces.XmlNamespace, data.Id.ToString());
}
if (!string.IsNullOrEmpty(data.Content)) {
writer.WriteElementString(XacmlConstants.Prefixes.Context, XacmlConstants.ElementNames.Content, this.version.NamespacePolicy, data.Content);
}
foreach (var attr in data.Attributes) {
writer.WriteStartElement(XacmlConstants.Prefixes.Context, XacmlConstants.ElementNames.Attribute, this.version.NamespacePolicy);
writer.WriteAttributeString(XacmlConstants.AttributeNames.AttributeId, attr.AttributeId.OriginalString);
writer.WriteAttributeString(XacmlConstants.AttributeNames.IncludeInResult, attr.IncludeInResult.ToString());
if (!string.IsNullOrEmpty(attr.Issuer)) {
writer.WriteAttributeString(XacmlConstants.AttributeNames.Issuer, attr.Issuer);
}
foreach (XacmlAttributeValue attrVal in attr.AttributeValues) {
this.WriteAttributeValue(writer, attrVal);
}
writer.WriteEndElement();
}
writer.WriteEndElement();
}
/// <summary>
/// Reads the context attributes.
/// </summary>
/// <param name="reader">The reader.</param>
/// <returns></returns>
protected virtual XacmlContextAttributes ReadContextAttributes(XmlReader reader) {
Contract.Requires<ArgumentNullException>(reader != null, "reader");
Contract.Requires<XmlException>(reader.IsStartElement(XacmlConstants.ElementNames.Attributes, this.version.NamespaceContext));
Uri category = this.ReadAttribute<Uri>(reader, XacmlConstants.AttributeNames.Category);
string id = this.ReadAttribute<string>(reader, XacmlConstants.AttributeNames.Id, namespaceURI: XacmlConstants.Namespaces.XmlNamespace, isRequered: false);
var result = new XacmlContextAttributes(category) { Id = id };
if (reader.IsEmptyElement) {
reader.Read();
return result;
}
reader.ReadStartElement(XacmlConstants.ElementNames.Attributes, this.version.NamespacePolicy);
if (reader.IsStartElement(XacmlConstants.ElementNames.Content, this.version.NamespacePolicy)) {
result.Content = reader.ReadInnerXml();
}
this.ReadList<XacmlAttribute>(result.Attributes, XacmlConstants.ElementNames.Attribute, this.version.NamespacePolicy, ReadAttribute, reader, false);
reader.ReadEndElement();
return result;
}
