public CacheList(string aFileName, string aKeyProperty, System.Type aCacheType)
: base()
{
System.Console.WriteLine("Initializing CACHE " + aFileName);
keyProperty = aKeyProperty;
if (KeyProperty == "")
{
throw new Exception("Key property for cache list can't be empty");
}
cacheType = aCacheType;
if (CacheType == null)
{
throw new Exception("Cache type for cache list can't be null");
}
PropertyInfo info = CacheType.GetProperty(KeyProperty);
keyinfo = info;
if (info == null)
{
throw new Exception("Property " + KeyProperty + " not found in " + aCacheType + " class!");
}
fileName = aFileName;
if (FileName == "")
{
throw new Exception("Filename for cache list can't be empty");
}
PropertyInfo[] infos = aCacheType.GetProperties();
foreach (PropertyInfo i in infos)
{
if ((i.CanRead == true) && (i.CanWrite == true))
{
object[] attrs = i.GetCustomAttributes(typeof(CachedPropertyValueAttribute), true);
foreach (object o in attrs)
{
if (((CachedPropertyValueAttribute)o).Enabled == true)
{
propList.Add(i);
}
}
}
}
LoadCache();
}
public int CompareData(string aField, object aComparer, object aObject)
{
PropertyInfo info = CacheType.GetProperty(aField);
if (aField == null)
{
throw new Exception("Trying to sort with non existant property");
}
if ((aObject == null) || (aComparer == null))
{
throw new Exception("Trying to sort with null object:\n" +
" Comparer: " + aComparer + "\n" +
" Object: " + aObject);
}
if ((aObject.GetType() != CacheType) || (aComparer.GetType() != CacheType))
{
throw new Exception("Trying to sort with wrong object");
}
if (info.PropertyType is IComparable)
{
return((info.GetValue(aComparer, null) as IComparable).CompareTo(info.GetValue(aObject, null)));
}
if ((info.PropertyType == typeof(int)) || (info.PropertyType == typeof(System.Int32)))
{
int a = (int)info.GetValue(aComparer, null);
int b = (int)info.GetValue(aObject, null);
return(CacheList.CompareData(a, b));
}
if ((info.PropertyType is string) || (info.PropertyType == typeof(System.String)))
{
string a = (string)info.GetValue(aComparer, null);
string b = (string)info.GetValue(aObject, null);
return(CacheList.CompareData(a, b));
}
if (info.PropertyType is DateTime)
{
DateTime a = (DateTime)info.GetValue(aComparer, null);
DateTime b = (DateTime)info.GetValue(aObject, null);
return(CacheList.CompareData(a, b));
}
throw new Exception("Wrong type comparision: " + info.PropertyType);
}
