/// <summary>
/// Given a visible <paramref name="id"/>, return the display name in the requested <paramref name="locale"/>.
/// If there is no directly supported id corresponding to this id, return
/// null.
/// </summary>
public virtual string GetDisplayName(string id, UCultureInfo locale)
{
IDictionary <string, IServiceFactory> m = GetVisibleIDMap();
if (m.TryGetValue(id, out IServiceFactory f) && f != null)
{
return(f.GetDisplayName(id, locale));
}
ICUServiceKey key = CreateKey(id);
while (key.Fallback())
{
if (m.TryGetValue(key.CurrentID, out f) && f != null)
{
return(f.GetDisplayName(id, locale));
}
}
return(null);
}
/// <summary>
/// Given a visible <paramref name="id"/>, return the display name in the requested <paramref name="locale"/>.
/// If there is no directly supported id corresponding to this id, return
/// null.
/// </summary>
public virtual string GetDisplayName(string id, ULocale locale)
{
IDictionary <string, IServiceFactory> m = GetVisibleIDMap();
IServiceFactory f = m.Get(id);
if (f != null)
{
return(f.GetDisplayName(id, locale));
}
ICUServiceKey key = CreateKey(id);
while (key.Fallback())
{
f = m.Get(key.CurrentID);
if (f != null)
{
return(f.GetDisplayName(id, locale));
}
}
return(null);
}
private CacheEntry GetKeyCacheEntry(ICUServiceKey key, IServiceFactory factory)
{
if (DEBUG)
{
Console.Out.WriteLine("Service: " + m_name + " key: " + key.CanonicalID);
}
if (key != null)
{
try
{
// The factory list can't be modified until we're done,
// otherwise we might update the cache with an invalid result.
// The cache has to stay in synch with the factory list.
factoryLock.AcquireRead();
IDictionary <string, CacheEntry> cache = this.cache; // copy so we don't need to sync on this
if (cache == null)
{
if (DEBUG)
{
Console.Out.WriteLine("Service " + m_name + " cache was empty");
}
// synchronized since additions and queries on the cache must be atomic
// they can be interleaved, though
cache = new ConcurrentDictionary <string, CacheEntry>();
}
string currentDescriptor = null;
List <string> cacheDescriptorList = null;
bool putInCache = false;
int NDebug = 0;
int startIndex = 0;
int limit = factories.Count;
bool cacheResult = true;
if (factory != null)
{
for (int i = 0; i < limit; ++i)
{
if (factory == factories[i])
{
startIndex = i + 1;
break;
}
}
if (startIndex == 0)
{
throw new InvalidOperationException("Factory " + factory + "not registered with service: " + this);
}
cacheResult = false;
}
CacheEntry result;
//outer:
do
{
currentDescriptor = key.GetCurrentDescriptor();
if (DEBUG)
{
Console.Out.WriteLine(m_name + "[" + NDebug++ + "] looking for: " + currentDescriptor);
}
if (cache.TryGetValue(currentDescriptor, out result) && result != null)
{
if (DEBUG)
{
Console.Out.WriteLine(m_name + " found with descriptor: " + currentDescriptor);
}
goto outer_break;
}
else
{
if (DEBUG)
{
Console.Out.WriteLine("did not find: " + currentDescriptor + " in cache");
}
}
// first test of cache failed, so we'll have to update
// the cache if we eventually succeed-- that is, if we're
// going to update the cache at all.
putInCache = cacheResult;
// int n = 0;
int index = startIndex;
while (index < limit)
{
IServiceFactory f = factories[index++];
if (DEBUG)
{
Console.Out.WriteLine("trying factory[" + (index - 1) + "] " + f.ToString());
}
object service = f.Create(key, this);
if (service != null)
{
result = new CacheEntry(currentDescriptor, service);
if (DEBUG)
{
Console.Out.WriteLine(m_name + " factory supported: " + currentDescriptor + ", caching");
}
goto outer_break;
}
else
{
if (DEBUG)
{
Console.Out.WriteLine("factory did not support: " + currentDescriptor);
}
}
}
// prepare to load the cache with all additional ids that
// will resolve to result, assuming we'll succeed. We
// don't want to keep querying on an id that's going to
// fallback to the one that succeeded, we want to hit the
// cache the first time next goaround.
if (cacheDescriptorList == null)
{
cacheDescriptorList = new List <string>(5);
}
cacheDescriptorList.Add(currentDescriptor);
} while (key.Fallback());
outer_break : { }
if (result != null)
{
if (putInCache)
{
if (DEBUG)
{
Console.Out.WriteLine("caching '" + result.actualDescriptor + "'");
}
cache[result.actualDescriptor] = result;
if (cacheDescriptorList != null)
{
foreach (string desc in cacheDescriptorList)
{
if (DEBUG)
{
Console.Out.WriteLine(m_name + " adding descriptor: '" + desc + "' for actual: '" + result.actualDescriptor + "'");
}
cache[desc] = result;
}
}
// Atomic update. We held the read lock all this time
// so we know our cache is consistent with the factory list.
// We might stomp over a cache that some other thread
// rebuilt, but that's the breaks. They're both good.
this.cache = cache;
}
if (DEBUG)
{
Console.Out.WriteLine("found in service: " + m_name);
}
return(result);
}
}
finally
{
factoryLock.ReleaseRead();
}
}
if (DEBUG)
{
Console.Out.WriteLine("not found in service: " + m_name);
}
return(null);
}
