/// <summary>
/// Handles the <see cref="IInMemoryIndex.IndexChanged" /> events.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The event arguments.</param>
protected void IndexChangedHandler(object sender, IndexChangedEventArgs e)
{
lock (this)
{
if (_disposed)
{
return;
}
switch (e.Change)
{
case IndexChangeType.IndexCleared:
InitDataStore(e.State);
break;
case IndexChangeType.DocumentAdded:
if (!_dataCorrupted)
{
IndexStorerResult result = SaveData(e.ChangeData, e.State);
e.Result = result;
}
break;
case IndexChangeType.DocumentRemoved:
if (!_dataCorrupted)
{
DeleteData(e.ChangeData, e.State);
}
break;
default:
throw new NotSupportedException("Invalid Change Type");
}
}
}
/// <summary>
/// Takes care of firing the <see cref="IndexChanged" /> event.
/// </summary>
/// <param name="document">The affected document.</param>
/// <param name="change">The change performed.</param>
/// <param name="changeData">The dumped change data.</param>
/// <param name="state">A state object that is passed to the IndexStorer SaveDate/DeleteData function.</param>
/// <returns>The storage result or <c>null</c>.</returns>
protected IndexStorerResult OnIndexChange(IDocument document, IndexChangeType change, DumpedChange changeData, object state)
{
if (IndexChanged != null)
{
IndexChangedEventArgs args = new IndexChangedEventArgs(document, change, changeData, state);
IndexChanged(this, args);
return(args.Result);
}
else
{
return(null);
}
}