private EnumerateResponse HandleOptimizedEnumerate(EnumerationContextKey contextKey, EnumerateRequest request, EnumerationContext context)
{
int maxElements = request.MaxElements != null
? request.MaxElements.Value
: 1;
if (request.EnumerationMode == EnumerationMode.EnumerateEPR)
{
IEnumerator<object> enumerator = GetHandler(request.Filter).Enumerate(context).GetEnumerator();
bool endOfSequence;
EnumerationItemList items = new EnumerationItemList(PullItems(maxElements, request.EnumerationMode,enumerator, out endOfSequence));
if (!endOfSequence)
{
_activeEnumerations[contextKey] = new EnumerationState(enumerator, request.EnumerationMode);
}
return new EnumerateResponse
{
Items = items,
EndOfSequence = endOfSequence ? new EndOfSequence() : null,
EnumerationContext = endOfSequence ? null : contextKey
};
}
throw new NotSupportedException();
}
public EnumerateResponse Enumerate(EnumerateRequest request)
{
EnumerationContextKey contextKey = EnumerationContextKey.Unique();
EnumerationContext context = new EnumerationContext(contextKey.Text, request.Filter, SelectorSetHeader.GetCurrent());
if (RequestTotalItemsCountEstimate.IsPresent)
{
HandleCountEnumerate(contextKey.Text, request.Filter);
return new EnumerateResponse
{
EnumerationContext = contextKey
};
}
if (request.OptimizeEnumeration != null)
{
return HandleOptimizedEnumerate(contextKey, request, context);
}
IEnumerator<object> enumerator = GetHandler(request.Filter).Enumerate(context).GetEnumerator();
_activeEnumerations[contextKey] = new EnumerationState(enumerator, request.EnumerationMode);
return new EnumerateResponse
{
EnumerationContext = contextKey,
Expires = request.Expires
};
}
public EnumerateResponse Enumerate(EnumerateRequest request)
{
EnumerationContextKey contextKey = EnumerationContextKey.Unique();
EnumerationContext context = new EnumerationContext(contextKey.Text, request.Filter, SelectorSetHeader.GetCurrent());
if (RequestTotalItemsCountEstimate.IsPresent)
{
HandleCountEnumerate(contextKey.Text, request.Filter);
return(new EnumerateResponse
{
EnumerationContext = contextKey
});
}
if (request.OptimizeEnumeration != null)
{
return(HandleOptimizedEnumerate(contextKey, request, context));
}
IEnumerator <object> enumerator = GetHandler(request.Filter).Enumerate(context).GetEnumerator();
_activeEnumerations[contextKey] = new EnumerationState(enumerator, request.EnumerationMode);
return(new EnumerateResponse
{
EnumerationContext = contextKey,
Expires = request.Expires
});
}
private EnumerateResponse HandleOptimizedEnumerate(EnumerationContextKey contextKey, EnumerateRequest request, EnumerationContext context)
{
int maxElements = request.MaxElements != null
? request.MaxElements.Value
: 1;
if (request.EnumerationMode == EnumerationMode.EnumerateEPR)
{
IEnumerator <object> enumerator = GetHandler(request.Filter).Enumerate(context).GetEnumerator();
bool endOfSequence;
EnumerationItemList items = new EnumerationItemList(PullItems(maxElements, request.EnumerationMode, enumerator, out endOfSequence));
if (!endOfSequence)
{
_activeEnumerations[contextKey] = new EnumerationState(enumerator, request.EnumerationMode);
}
return(new EnumerateResponse
{
Items = items,
EndOfSequence = endOfSequence ? new EndOfSequence() : null,
EnumerationContext = endOfSequence ? null : contextKey
});
}
throw new NotSupportedException();
}