/// <summary>
/// Reads the obligation expression.
/// </summary>
/// <param name="reader">The reader.</param>
/// <returns></returns>
/// <exception cref="XacmlSerializationException">Wrong XacmlEffectType value</exception>
protected virtual XacmlObligationExpression ReadObligationExpression(XmlReader reader) {
Contract.Requires<ArgumentNullException>(reader != null, "reader");
Contract.Requires<XmlException>(reader.IsStartElement(XacmlConstants.ElementNames.ObligationExpression, this.version.NamespacePolicy));
string gaFulFillOn = this.ReadAttribute<string>(reader, XacmlConstants.AttributeNames.FulfillOn);
XacmlEffectType effectType = XacmlEffectType.Deny;
if (string.Equals(gaFulFillOn, "Deny", StringComparison.OrdinalIgnoreCase)) {
effectType = XacmlEffectType.Deny;
}
else if (string.Equals(gaFulFillOn, "Permit", StringComparison.OrdinalIgnoreCase)) {
effectType = XacmlEffectType.Permit;
}
else {
throw Diagnostic.DiagnosticTools.ExceptionUtil.ThrowHelperError(new XacmlSerializationException("Wrong XacmlEffectType value"));
}
XacmlObligationExpression result = new XacmlObligationExpression(
this.ReadAttribute<Uri>(reader, XacmlConstants.AttributeNames.ObligationId),
effectType
);
reader.ReadStartElement(XacmlConstants.ElementNames.ObligationExpression, this.version.NamespacePolicy);
this.ReadList<XacmlAttributeAssignmentExpression>(result.AttributeAssignmentExpressions, XacmlConstants.ElementNames.AttributeAssignmentExpression, this.version.NamespacePolicy, this.ReadAttributeAssignmentExpression, reader, isRequired: false);
reader.ReadEndElement();
return result;
}
/// <summary>
/// Writes the obligation expression.
/// </summary>
/// <param name="writer">The writer.</param>
/// <param name="data">The data.</param>
protected virtual void WriteObligationExpression(XmlWriter writer, XacmlObligationExpression data) {
Contract.Requires<ArgumentNullException>(writer != null);
Contract.Requires<ArgumentNullException>(data != null);
writer.WriteStartElement(XacmlConstants.Prefixes.Policy, XacmlConstants.ElementNames.ObligationExpression, this.version.NamespacePolicy);
writer.WriteAttributeString(XacmlConstants.AttributeNames.ObligationId, data.ObligationId.OriginalString);
writer.WriteAttributeString(XacmlConstants.AttributeNames.FulfillOn, data.FulfillOn.ToString());
foreach (XacmlAttributeAssignmentExpression expr in data.AttributeAssignmentExpressions) {
this.WriteAttributeAssignmentExpression(writer, expr);
}
writer.WriteEndElement();
}