public MemoryItem GetLastItemByTagList(List <string> tagList)
{
if (itemList.Count == 0)
{
return(null);
}
else
{
Monitor.Enter(lockObject);
int index = 0;
while (index < itemList.Count)
{
MemoryItem item = itemList[index];
Boolean matching = true;
foreach (string tag in tagList)
{
if (!item.TagList.Contains(tag))
{
matching = false;
break;
}
}
if (matching)
{
MemoryItem accessedItem = item.Copy();
Monitor.Exit(lockObject);
return(accessedItem);
}
index++;
}
Monitor.Exit(lockObject);
return(null); // No match found.
}
}
/* public MemoryItem GetItemByTag(string tag, DateTime firstAllowedTime)
* {
* if (itemList.Count == 0) { return null; }
* else
* {
* Monitor.Enter(lockObject);
* int index = 0;
* DateTime dateTime = itemList[index].InsertionTime;
* while (dateTime > firstAllowedTime)
* {
* MemoryItem item = itemList[index];
* if (item.TagList.Contains(tag))
* {
* MemoryItem accessedItem = item.Copy();
* Monitor.Exit(lockObject);
* return accessedItem;
* }
* index++;
* if (index >= itemList.Count) { break; }
* else { dateTime = itemList[index].InsertionTime; }
* }
* Monitor.Exit(lockObject);
* return null;
* }
* }
*
* public MemoryItem GetItemByTagList(List<string> tagList, DateTime firstAllowedTime)
* {
* return null; // TBW
* } */
public MemoryItem GetLastItemByTag(string tag)
{
if (itemList.Count == 0)
{
return(null);
}
else
{
Monitor.Enter(lockObject);
int index = 0;
while (index < itemList.Count)
{
MemoryItem item = itemList[index];
if (item.TagList.Contains(tag))
{
MemoryItem accessedItem = item.Copy();
Monitor.Exit(lockObject);
return(accessedItem);
}
index++;
}
Monitor.Exit(lockObject);
return(null);
}
}
// Sets the dateTime of the item to the current time (the time of insertion), adds
// the item, and then triggers the Changed event.
public void AddItem(MemoryItem addedItem)
{
Monitor.Enter(lockObject);
addedItem.InsertionTime = DateTime.Now;
itemList.Insert(0, addedItem);
Monitor.Exit(lockObject);
OnItemInserted();
}
