private ConfigurationDocument GetConfigurationDocument(ConfigurationDocumentKey documentKey, bool prior)
{
IQueryable <ConfigurationDocument> query = from d in Context.ConfigurationDocuments select d;
query = !string.IsNullOrEmpty(documentKey.InstanceKey)
? query.Where(d => d.InstanceKey == documentKey.InstanceKey)
: query.Where(d => d.InstanceKey == null);
query = !string.IsNullOrEmpty(documentKey.User)
? query.Where(d => d.User == documentKey.User)
: query.Where(d => d.User == null);
query = query.Where(d => d.DocumentName == documentKey.DocumentName);
var paddedVersionString = VersionUtils.ToPaddedVersionString(documentKey.Version, false, false);
if (prior)
{
query = query.Where(d => d.DocumentVersionString.CompareTo(paddedVersionString) < 0);
//You want the most recent prior version.
query = query.OrderByDescending(d => d.DocumentVersionString);
}
else
{
query = query.Where(d => d.DocumentVersionString == paddedVersionString);
}
return(query.FirstOrDefault());
}
public void PutSettingsValues(SettingsGroupDescriptor group, string user, string instanceKey,
Dictionary <string, string> dirtyValues)
{
using (var context = new DataAccessContext())
{
// next we obtain any previously stored configuration document for this settings group
var documentKey = new ConfigurationDocumentKey(group.Name, group.Version, user, instanceKey);
var broker = context.GetConfigurationDocumentBroker();
var values = new Dictionary <string, string>();
var parser = new SettingsParser();
var document = broker.GetConfigurationDocument(documentKey);
if (document == null)
{
document = new ConfigurationDocument
{
CreationTime = Platform.Time,
DocumentName = group.Name,
DocumentVersionString = VersionUtils.ToPaddedVersionString(group.Version, false, false),
User = user,
DocumentText = string.Empty
};
broker.AddConfigurationDocument(document);
}
else
{
// parse document
parser.FromXml(document.DocumentText, values);
}
// update the values that have changed
foreach (var kvp in dirtyValues)
{
values[kvp.Key] = kvp.Value;
}
try
{
if (values.Count > 0)
{
// generate the document, update local cache and server
document.DocumentText = parser.ToXml(values);
context.Commit();
}
}
catch (EndpointNotFoundException e)
{
Platform.Log(LogLevel.Debug, e, "Unable to save settings to configuration service.");
}
}
}