/// <summary>
/// This method is used to write the version attribute. A version is
/// written only if it is not the initial version or if it required.
/// The version is used to determine how to deserialize the XML. If
/// the version is different from the expected version then it allows
/// the object to be deserialized in a manner that does not require
/// any attributes or elements, and unmatched nodes are ignored.
/// </summary>
/// <param name="node">
/// this is the node to read the version attribute from
/// </param>
/// <param name="source">
/// this is the source object that is to be written
/// </param>
/// <param name="schema">
/// this is the schema that contains the version
/// </param>
public void WriteVersion(OutputNode node, Object source, Schema schema) {
Version version = schema.getRevision();
Label label = schema.GetVersion();
if(version != null) {
Double start = revision.Default;
Double value = version.revision();
if(revision.Compare(value, start)) {
if(label.isRequired()) {
WriteAttribute(node, value, label);
}
} else {
WriteAttribute(node, value, label);
}
}
}