private Expression JoinReplacer(QueryModel queryModel, Expression expression)
{
var joins = LeftJoinDetector.Detect(expression, new NameGenerator(queryModel), _sessionFactory);
Expression result = expression;
if (joins.Joins.Count > 0)
{
result = joins.Selector;
queryModel.TransformExpressions(e => ExpressionSwapper.Swap(e, joins.ExpressionMap));
foreach (var join in joins.Joins)
{
queryModel.BodyClauses.Add(join);
}
}
return(result);
}
public static Expression Swap(Expression expression, Dictionary <Expression, Expression> expressionMap)
{
var swapper = new ExpressionSwapper(expressionMap);
return(swapper.VisitExpression(expression));
}