/// <summary>
/// Replace or add the variable as requested.
/// </summary>
/// <param name="varName"></param>
/// <param name="replacementExpr"></param>
/// <returns></returns>
public IVariableScopeHolder AddInternal(IQuerySource query, Expression replacementExpr)
{
Debug.WriteLine("Caching QS {0} => {1}", query.ToString(), replacementExpr.ToString());
// If this QS is referenced by a QM cache line, then we need to invalidate that QM.
if (_queryReplacement.ContainsKey(query))
{
var badQM = (from q in _queryModelCache
where q.Value._referencedQS.Contains(query)
select q.Key).ToArray();
Debug.Indent();
foreach (var qm in badQM)
{
Debug.WriteLine("Removing QM due to change in QS {0}{1}", qm.ToString(), "");
_queryModelCache.Remove(qm);
}
Debug.Unindent();
}
///
/// Somethign to get us back to this state
///
IVariableScopeHolder popper = null;
if (_queryReplacement.ContainsKey(query))
{
popper = new CCReplacementQuery(this, query, _queryReplacement[query]);
}
else
{
popper = new CCReplacementQuery(this, query, null);
}
///
/// And save the expression for future lookup
///
if (replacementExpr != null)
{
_queryReplacement[query] = replacementExpr;
}
else
{
_queryReplacement.Remove(query);
}
return(popper);
}
/// <summary>
/// Replace or add the variable as requested.
/// </summary>
/// <param name="varName"></param>
/// <param name="replacementExpr"></param>
/// <returns></returns>
public IVariableScopeHolder AddInternal(IQuerySource query, Expression replacementExpr)
{
Debug.WriteLine("Caching QS {0} => {1}", query.ToString(), replacementExpr.ToString());
// If this QS is referenced by a QM cache line, then we need to invalidate that QM.
if (_queryReplacement.ContainsKey(query))
{
var badQM = (from q in _queryModelCache
where q.Value._referencedQS.Contains(query)
select q.Key).ToArray();
Debug.Indent();
foreach (var qm in badQM)
{
Debug.WriteLine("Removing QM due to change in QS {0}{1}", qm.ToString(), "");
_queryModelCache.Remove(qm);
}
Debug.Unindent();
}
///
/// Somethign to get us back to this state
///
IVariableScopeHolder popper = null;
if (_queryReplacement.ContainsKey(query))
{
popper = new CCReplacementQuery(this, query, _queryReplacement[query]);
}
else
{
popper = new CCReplacementQuery(this, query, null);
}
///
/// And save the expression for future lookup
///
if (replacementExpr != null)
{
_queryReplacement[query] = replacementExpr;
}
else
{
_queryReplacement.Remove(query);
}
return popper;
}
