public static int Compare(ProcessDefInformation left, ProcessDefInformation right)
{
int ret = String.Compare(left.Name, right.Name);
if (ret != 0) return ret;
if (left.Version < right.Version)
{
return -1;
}
else return left.Version == right.Version ? 0 : 1;
}
/// <summary>
/// Scan package files for process information
/// </summary>
/// <returns></returns>
protected Dictionary<String, List<ProcessDefInformation>> LoadProcessInformationIfNecessary()
{
lock (this)
{
if (_processInfoCache != null) return _processInfoCache;
Dictionary<string, List<ProcessDefInformation>> cache = new Dictionary<string, List<ProcessDefInformation>>();
foreach (string file in _processFiles)
{
log.Info("Loading process file : {0}", file);
ProcessDefInformation pdi = new ProcessDefInformation();
pdi.FileName = file;
using (Stream stm = DataStore.GetPackageContentStream(file))
{
XmlReader xr = XmlReader.Create(stm);
XmlNodeType ntype = xr.MoveToContent();
if (ntype != XmlNodeType.Element) throw new Exception("Expected root element node");
string pname = xr.GetAttribute("name");
if (pname == null) throw new Exception("Missing 'name' attribute");
string pver = xr.GetAttribute("version");
if (pver == null) throw new Exception("Missing 'version' attribute");
pdi.Name = pname;
pdi.Version = Int32.Parse(pver);
}
List<ProcessDefInformation> lst;
if (!cache.TryGetValue(pdi.Name, out lst))
{
lst = new List<ProcessDefInformation>(); cache.Add(pdi.Name, lst);
}
foreach (ProcessDefInformation pdi2 in lst)
{
if (pdi2.Version == pdi.Version &&
pdi2.Name == pdi.Name)
throw new ApplicationException(string.Format("Process {0}.{1} already defined in file {2}", pdi2.Name, pdi2.Version, pdi2.FileName));
}
lst.Add(pdi);
}
foreach (List<ProcessDefInformation> lst in cache.Values)
{
lst.Sort(new Comparison<ProcessDefInformation>(ProcessDefInformation.Compare));
}
_processInfoCache = cache;
return _processInfoCache;
}
}