/// <summary>
/// Determines if a type is contained the supplied filter.
/// </summary>
/// <param name="type">The Type to look for</param>
/// <param name="typeFilter">The Filter to test against the Type</param>
/// <returns>true or false</returns>
private bool MatchesFilter(Type type, TypeFilter typeFilter)
{
TypeInfo typeInfo;
// If no filter is provided type does not match the filter.
if (typeFilter == null) return false;
// If all types are accepted in the filter (using the "*") return true.
if (typeFilter.AcceptAllTypes) return true;
// Loop through the types specified in the filter.
for (int i=0;i<typeFilter.Types.Count;i++)
{
typeInfo = (TypeInfo)typeFilter.Types[i];
// If the Type matches this type in the Filter, then return true.
if (typeInfo.ClassType.Equals(type)) return true;
// If the filter type includes SubClasses of itself (it had a "+" before the type in the
// configuration file) AND the Type is a SubClass of the filter type, then return true.
if (typeInfo.IncludeSubClasses == true && typeInfo.ClassType.IsAssignableFrom(type)) return true;
}
// If no matches are found return false.
return false;
}
/// <summary>
/// Creates TypeFilter with type information from the string array of type names.
/// </summary>
/// <param name="rawFilter">String array containing names of types to be included in the filter.</param>
/// <returns>TypeFilter object containing type information.</returns>
private TypeFilter LoadTypeFilter(string[] rawFilter)
{
// Initialize filter
TypeFilter typeFilter = new TypeFilter();
// Verify information was passed in
if (rawFilter != null)
{
TypeInfo exceptionTypeInfo;
// Loop through the string array
for (int i=0;i<rawFilter.GetLength(0);i++)
{
// If the wildcard character "*" exists set the TypeFilter to accept all types.
if (rawFilter[i] == "*")
{
typeFilter.AcceptAllTypes = true;
}
else
{
try
{
if (rawFilter[i].Length > 0)
{
// Create the TypeInfo class
exceptionTypeInfo = new TypeInfo();
// If the string starts with a "+"
if (rawFilter[i].Trim().StartsWith("+"))
{
// Set the TypeInfo class to include subclasses
exceptionTypeInfo.IncludeSubClasses = true;
// Get the Type class from the filter privided.
exceptionTypeInfo.ClassType = Type.GetType(rawFilter[i].Trim().TrimStart(Convert.ToChar("+")),true);
}
else
{
// Set the TypeInfo class not to include subclasses
exceptionTypeInfo.IncludeSubClasses = false;
// Get the Type class from the filter privided.
exceptionTypeInfo.ClassType = Type.GetType(rawFilter[i].Trim(),true);
}
// Add the TypeInfo class to the TypeFilter
typeFilter.Types.Add(exceptionTypeInfo);
}
}
catch(TypeLoadException e)
{
// If the Type could not be created throw a configuration exception.
ExceptionManager.PublishInternalException(new System.Configuration.ConfigurationErrorsException(resourceManager.GetString("RES_EXCEPTION_LOADING_CONFIGURATION"), e), null);
}
}
}
}
return typeFilter;
}
