示例#1
0
        /// <summary>
        /// Performs a point query with a single value.
        /// All items with overlapping ranges are returned.
        /// </summary>
        public IEnumerable <RangeValuePair <TKey, TValue> > QueryRangeValueList(TKey value)
        {
            var results = new List <RangeValuePair <TKey, TValue> >();

            // If the node has items, check for leaves containing the value.
            if (items != null)
            {
                foreach (var o in items)
                {
                    if (comparer.Compare(o.From, value) > 0)
                    {
                        break;
                    }
                    else if (comparer.Compare(value, o.From) >= 0 && comparer.Compare(value, o.To) <= 0)
                    {
                        results.Add(o);
                    }
                }
            }

            // go to the left or go to the right of the tree, depending
            // where the query value lies compared to the center
            var centerComp = comparer.Compare(value, center);

            if (leftNode != null && centerComp < 0)
            {
                results.AddRange(leftNode.QueryRangeValueList(value));
            }
            else if (rightNode != null && centerComp > 0)
            {
                results.AddRange(rightNode.QueryRangeValueList(value));
            }

            return(results);
        }
示例#2
0
        public IEnumerable <RangeValuePair <TKey, TValue> > QueryRangeValueList(
            TKey value)
        {
            if (!isInSync)
            {
                Rebuild();
            }

            return(root.QueryRangeValueList(value));
        }