/// <summary>
/// Reads the variable definition.
/// </summary>
/// <param name="reader">The reader.</param>
/// <returns></returns>
/// <exception cref="XacmlSerializationException">Wrong VariableDefinition element content</exception>
protected virtual XacmlVariableDefinition ReadVariableDefinition(XmlReader reader) {
Contract.Requires<ArgumentNullException>(reader != null, "reader");
Contract.Requires<XmlException>(reader.IsStartElement(XacmlConstants.ElementNames.VariableDefinition, this.version.NamespacePolicy));
string variableId = this.ReadAttribute<string>(reader, XacmlConstants.AttributeNames.VariableId);
XacmlVariableDefinition result = new XacmlVariableDefinition(variableId);
if (reader.IsEmptyElement) {
return result;
}
reader.ReadStartElement(XacmlConstants.ElementNames.VariableDefinition, this.version.NamespacePolicy);
switch (reader.Name) {
case XacmlConstants.ElementNames.VariableReference: {
result.Property = this.ReadOptional(XacmlConstants.ElementNames.VariableReference, this.version.NamespacePolicy,
new ReadElement<XacmlVariableReference>(
o => new XacmlVariableReference(this.ReadAttribute<string>(reader, XacmlConstants.AttributeNames.VariableId))
), reader);
break;
}
case XacmlConstants.ElementNames.AttributeSelector: {
result.Property = this.ReadOptional(XacmlConstants.ElementNames.AttributeSelector, this.version.NamespacePolicy, this.ReadAttributeSelector, reader);
break;
}
case XacmlConstants.ElementNames.ResourceAttributeDesignator: {
result.Property = this.ReadOptional(XacmlConstants.ElementNames.ResourceAttributeDesignator, this.version.NamespacePolicy, this.ReadAttributeDesignator, reader);
break;
}
case XacmlConstants.ElementNames.ActionAttributeDesignator: {
result.Property = this.ReadOptional(XacmlConstants.ElementNames.ActionAttributeDesignator, this.version.NamespacePolicy, this.ReadAttributeDesignator, reader);
break;
}
case XacmlConstants.ElementNames.EnvironmentAttributeDesignator: {
result.Property = this.ReadOptional(XacmlConstants.ElementNames.EnvironmentAttributeDesignator, this.version.NamespacePolicy, this.ReadAttributeDesignator, reader);
break;
}
case XacmlConstants.ElementNames.SubjectAttributeDesignator: {
result.Property = this.ReadOptional(XacmlConstants.ElementNames.SubjectAttributeDesignator, this.version.NamespacePolicy, this.ReadAttributeDesignator, reader);
break;
}
case XacmlConstants.ElementNames.AttributeValue: {
result.Property = this.ReadOptional(XacmlConstants.ElementNames.AttributeValue, this.version.NamespacePolicy, this.ReadAttributeValue, reader);
break;
}
case XacmlConstants.ElementNames.Function: {
result.Property = this.ReadOptional(XacmlConstants.ElementNames.Function, this.version.NamespacePolicy, this.ReadFunction, reader);
break;
}
case XacmlConstants.ElementNames.Apply: {
result.Property = this.ReadOptional(XacmlConstants.ElementNames.Apply, this.version.NamespacePolicy, this.ReadApply, reader);
break;
}
default: {
throw Diagnostic.DiagnosticTools.ExceptionUtil.ThrowHelperError(new XacmlSerializationException("Wrong VariableDefinition element content"));
}
}
reader.ReadEndElement();
return result;
}
/// <summary>
/// Writes the variable definition.
/// </summary>
/// <param name="writer">The writer.</param>
/// <param name="variableDefinition">The variable definition.</param>
protected virtual void WriteVariableDefinition(XmlWriter writer, XacmlVariableDefinition variableDefinition) {
writer.WriteStartElement(XacmlConstants.Prefixes.Policy, XacmlConstants.ElementNames.VariableDefinition, this.version.NamespacePolicy);
writer.WriteAttributeString(XacmlConstants.AttributeNames.VariableId, variableDefinition.VariableId);
this.WriteExpressionType(writer, variableDefinition);
writer.WriteEndElement();
}
