/// <summary>
/// Gets an enumerator for all entries in the dictionary.
/// </summary>
/// <param name="Locked">If the file should be locked.</param>
/// <returns>Enumerator</returns>
public async Task <ObjectBTreeFileEnumerator <KeyValuePair <string, object> > > GetEnumerator(bool Locked)
{
ObjectBTreeFileEnumerator <KeyValuePair <string, object> > Result = null;
try
{
Result = new ObjectBTreeFileEnumerator <KeyValuePair <string, object> >(this.dictionaryFile, this.recordHandler, this.keyValueSerializer);
if (Locked)
{
await Result.Lock();
}
}
catch (Exception ex)
{
if (Result != null)
{
Result.Dispose();
Result = null;
}
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(ex).Throw();
}
return(Result);
}
/// <summary>
/// Gets an enumerator for all entries in the dictionary.
/// </summary>
/// <param name="LockType">
/// If locked access to the file is requested, and of what type.
///
/// If unlocked access is desired, any change to the database will invalidate the enumerator, and further access to the
/// enumerator will cause an <see cref="InvalidOperationException"/> to be thrown.
///
/// If read locked access is desired, the database cannot be updated, until the enumerator has been disposed.
/// If write locked access is desired, the database cannot be accessed at all, until the enumerator has been disposed.
///
/// Make sure to call the <see cref="ObjectBTreeFileEnumerator{T}.Dispose"/> method when done with the enumerator, to release
/// the database lock after use.
/// </param>
/// <returns>Enumerator</returns>
public async Task <ObjectBTreeFileEnumerator <KeyValuePair <string, object> > > GetEnumerator(LockType LockType)
{
ObjectBTreeFileEnumerator <KeyValuePair <string, object> > Result = null;
try
{
Result = await ObjectBTreeFileEnumerator <KeyValuePair <string, object> > .Create(this.dictionaryFile, this.recordHandler, this.keyValueSerializer);
if (LockType != LockType.None)
{
await Result.Lock(LockType);
}
}
catch (Exception ex)
{
Result?.Dispose();
Result = null;
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Capture(ex).Throw();
}
return(Result);
}
