/// <summary>
/// Returns the current value for this id, or null if the
/// id isn't in the index or was deleted.
/// </summary>
public virtual T Get(string id)
{
// First try to get the "live" value:
T value;
current.TryGetValue(id, out value);
if (EqualityComparer <T> .Default.Equals(value, missingValue))
{
// Deleted but the deletion is not yet reflected in
// the reader:
return(default(T));
}
else if (!EqualityComparer <T> .Default.Equals(value, default(T)))
{
return(value);
}
else
{
old.TryGetValue(id, out value);
if (EqualityComparer <T> .Default.Equals(value, missingValue))
{
// Deleted but the deletion is not yet reflected in
// the reader:
return(default(T));
}
else if (!EqualityComparer <T> .Default.Equals(value, default(T)))
{
return(value);
}
else
{
// It either does not exist in the index, or, it was
// already flushed & NRT reader was opened on the
// segment, so fallback to current searcher:
S s = mgr.Acquire();
try
{
return(LookupFromSearcher(s, id));
}
finally
{
mgr.Release(s);
}
}
}
}
/// <summary>
/// Returns the current value for this id, or null if the
/// id isn't in the index or was deleted.
/// </summary>
public virtual T Get(string id)
{
// First try to get the "live" value:
T value = Current[id];
if ((object)value == (object)MissingValue)
{
// Deleted but the deletion is not yet reflected in
// the reader:
return(default(T));
}
else if ((object)value != (object)default(T))
{
return(value);
}
else
{
value = Old[id];
if ((object)value == (object)MissingValue)
{
// Deleted but the deletion is not yet reflected in
// the reader:
return(default(T));
}
else if ((object)value != (object)default(T))
{
return(value);
}
else
{
// It either does not exist in the index, or, it was
// already flushed & NRT reader was opened on the
// segment, so fallback to current searcher:
S s = Mgr.Acquire();
try
{
return(LookupFromSearcher(s, id));
}
finally
{
Mgr.Release(s);
}
}
}
}
internal ReferenceContext(ReferenceManager <T> referenceManager)
{
this.referenceManager = referenceManager;
this.reference = referenceManager.Acquire();
}