/// <summary>
/// Reads the specified XML element (a 'Configuration' element) and updates the corresponding items in the specified
/// configuration.
/// </summary>
/// <param name="configuration">Configuration to update.</param>
/// <param name="parent">Parent element in the XML tree.</param>
private void LoadInternal(CascadedConfiguration configuration, XmlElement parent)
{
// read 'Configuration' element
XmlElement configurationElement = parent.SelectSingleNode(string.Format("Configuration[@name='{0}']", configuration.Name)) as XmlElement;
if (configurationElement != null)
{
foreach (ICascadedConfigurationItem item in configuration.Items)
{
XmlElement itemElement = configurationElement.SelectSingleNode(string.Format("Item[@name='{0}']", item.Name)) as XmlElement;
if (itemElement != null)
{
object value = GetValueFromXmlElement(itemElement, item.Name, item.Type);
item.Value = value;
}
else
{
item.ResetValue();
}
}
// load child configurations
foreach (CascadedConfiguration child in configuration.Children)
{
LoadInternal(child, configurationElement);
}
// add configurations that do not exist, yet
// (items are not mapped, since items are typed and the file does not contain any type information)
foreach (XmlElement element in configurationElement.SelectNodes("Configuration[@name]"))
{
string name = element.Attributes["name"].Value;
CascadedConfiguration child = configuration.Children.Where(x => x.Name == name).FirstOrDefault();
if (child == null)
{
child = configuration.GetChildConfiguration(CascadedConfigurationPathHelper.EscapeName(name), true);
LoadInternal(child, configurationElement);
}
}
}
else
{
configuration.ResetItems(true);
}
}
/// <summary>
/// Recursion helper for the <see cref="LoadItem(ICascadedConfigurationItem)"/> method.
/// </summary>
/// <param name="item">Item to load.</param>
/// <param name="remainingPath">Remaining path to the requested item.</param>
/// <param name="parent">XML node of the parent configuration.</param>
private void LoadItemInternal(ICascadedConfigurationItem item, string remainingPath, XmlElement parent)
{
string[] pathTokens = CascadedConfigurationPathHelper.SplitPath(this, remainingPath, true, true);
if (pathTokens.Length > 1)
{
string itemName = CascadedConfigurationPathHelper.UnescapeName(pathTokens[0]);
XmlElement configurationElement = parent.SelectSingleNode(string.Format("Configuration[@name='{0}']", itemName)) as XmlElement;
if (configurationElement != null)
{
LoadItemInternal(item, string.Join("/", pathTokens, 1, pathTokens.Length - 1), configurationElement);
}
}
else
{
XmlElement itemElement = parent.SelectSingleNode(string.Format("Item[@name='{0}']", item.Name)) as XmlElement;
if (itemElement != null)
{
object value = GetValueFromXmlElement(itemElement, item.Name, item.Type);
item.Value = value;
}
}
}