protected override Expression VisitProjection(ProjectionExpression projection)
{
var queryObject = new MongoQueryObjectBuilder().Build(projection);
queryObject.Projector = new ProjectionBuilder().Build(projection.Projector, queryObject.DocumentType, "document", queryObject.IsMapReduce);
queryObject.Aggregator = (LambdaExpression)Visit(projection.Aggregator);
Expression result = Expression.Call(
_provider,
"ExecuteQueryObject",
Type.EmptyTypes,
Expression.Constant(queryObject, typeof(MongoQueryObject)));
if (queryObject.Aggregator != null)
result = Expression.Convert(result, queryObject.Aggregator.Body.Type);
else
result = Expression.Convert(result, typeof(IEnumerable<>).MakeGenericType(queryObject.Projector.Body.Type));
return result;
}
protected override Expression VisitProjection(ProjectionExpression projection)
{
var queryObject = new MongoQueryObjectBuilder().Build(projection);
queryObject.Projector = new ProjectionBuilder().Build(projection.Projector, queryObject.DocumentType, "document", queryObject.IsMapReduce);
queryObject.Aggregator = (LambdaExpression)Visit(projection.Aggregator);
Expression result = Expression.Call(
_provider,
"ExecuteQueryObject",
Type.EmptyTypes,
Expression.Constant(queryObject, typeof(MongoQueryObject)));
if (queryObject.Aggregator != null)
result = Expression.Convert(result, queryObject.Aggregator.Body.Type);
else
result = Expression.Convert(result, typeof(IEnumerable<>).MakeGenericType(queryObject.Projector.Body.Type));
return result;
}
