private void MapAliases(Expression a, Expression b)
{
TableAlias[] prodA = DeclaredAliasGatherer.Gather(a).ToArray();
TableAlias[] prodB = DeclaredAliasGatherer.Gather(b).ToArray();
for (int i = 0, n = prodA.Length; i < n; i++)
{
aliasScope.Add(prodA[i], prodB[i]);
}
}
protected virtual bool CompareProjection(ProjectionExpression a, ProjectionExpression b)
{
if (!Compare(a.Source, b.Source))
{
return(false);
}
var save = aliasScope;
try
{
aliasScope = new ScopedDictionary <TableAlias, TableAlias>(aliasScope);
aliasScope.Add(a.Source.Alias, b.Source.Alias);
return(Compare(a.Projector, b.Projector) &&
Compare(a.Aggregator, b.Aggregator) &&
a.IsSingleton == b.IsSingleton);
}
finally
{
aliasScope = save;
}
}