/// <summary>
/// mongodb专用
/// </summary>
/// <param name="expression"></param>
/// <returns></returns>
public LambdaQueryResultSelect <TResult> HavingCount(Expression <Func <TResult, bool> > expression)
{
BaseQuery.GetPrefix(typeof(TResult));
var crlExpression = BaseQuery.__Visitor.RouteExpressionHandler(expression.Body);
BaseQuery.mongoHavingCount = crlExpression;
return(this);
}
/// <summary>
/// 返回强类型结果选择
/// </summary>
/// <param name="resultSelector"></param>
/// <returns></returns>
public ILambdaQueryResultSelect <TJoinResult2> Select <TJoinResult2>(Expression <Func <T, TJoinResult, TJoinResult2> > resultSelector)
where TJoinResult2 : class
{
var parameters = resultSelector.Parameters.Select(b => b.Type).ToArray();
var selectField = BaseQuery.GetSelectField(true, resultSelector.Body, false, parameters);
var resultFields = selectField.mapping;
var prefix1 = BaseQuery.GetPrefix(typeof(TJoinResult));
var prefix2 = BaseQuery.GetPrefix(resultSelect.InnerType);
//替换匿名前辍
foreach (var item in resultFields)
{
if (item.QueryFull.Contains(prefix1))
{
item.QueryFull = item.QueryFull.Replace(prefix1, prefix2);
}
}
BaseQuery.SetSelectFiled(selectField);
return(new LambdaQueryResultSelect <TJoinResult2>(BaseQuery, resultSelector.Body));
}
/// <summary>
/// 在当前关联基础上再创建关联
/// </summary>
/// <typeparam name="TJoin2">再关联的类型</typeparam>
/// <param name="expression">关联语法</param>
/// <param name="joinType">关联类型</param>
/// <returns></returns>
public LambdaQueryJoin <TJoin, TJoin2> Join <TJoin2>(Expression <Func <TJoin, TJoin2, bool> > expression, JoinType joinType = JoinType.Inner) where TJoin2 : IModel, new()
{
//like
//query.Join<Code.Member>((a, b) => a.UserId == b.Id)
// .Select((a, b) => new { a.BarCode, b.Name })
// .Join<Code.Order>((a, b) => a.Id == b.Id);
var query2 = new LambdaQueryJoin <TJoin, TJoin2>(BaseQuery);
var innerType = typeof(TJoin2);
//BaseQuery.__JoinTypes.Add(new TypeQuery(innerType), joinType);
BaseQuery.GetPrefix(innerType);
string condition = BaseQuery.FormatJoinExpression(expression.Body);
BaseQuery.AddInnerRelation(new TypeQuery(innerType), joinType, condition);
return(query2);
}
