/// <summary>
/// 选择TJoin关联值到对象内部索引
/// 可调用多次,不要重复
/// </summary>
/// <param name="resultSelector"></param>
/// <returns></returns>
public LambdaQueryJoin <T, TJoin> SelectAppendValue(Expression <Func <TJoin, object> > resultSelector)
{
//var innerType = typeof(TJoin);
if (BaseQuery.__QueryFields.Count == 0)
{
BaseQuery.SelectAll();
}
var resultFields = BaseQuery.GetSelectField(resultSelector.Body, true, typeof(T), typeof(TJoin));
BaseQuery.__QueryFields.AddRange(resultFields);
return(this);
}
/// <summary>
/// 选择TJoin关联值到对象内部索引
/// 可调用多次,不要重复
/// </summary>
/// <param name="resultSelector"></param>
/// <returns></returns>
public LambdaQueryJoin <T, TJoin> SelectAppendValue <TResult>(Expression <Func <TJoin, TResult> > resultSelector)
{
//var innerType = typeof(TJoin);
//if (BaseQuery.__QueryFields.Count == 0)
//{
// BaseQuery.SelectAll();
//}
if (BaseQuery._CurrentSelectFieldCache == null)
{
BaseQuery.SelectAll();
}
var parameters = resultSelector.Parameters.Select(b => b.Type).ToArray();
var resultFields = BaseQuery.GetSelectField(true, resultSelector.Body, true, parameters).fields;
//BaseQuery.__QueryFields.AddRange(resultFields);
BaseQuery._CurrentAppendSelectField.AddRange(resultFields);
return(this);
}
/// <summary>
/// 选择TJoin关联值到对象内部索引
/// 可调用多次,不要重复
/// </summary>
/// <param name="resultSelector"></param>
/// <returns></returns>
public ILambdaQuery <T> SelectAppendValue <TJoinResult2>(Expression <Func <TJoinResult, TJoinResult2> > resultSelector)
{
if (BaseQuery._CurrentSelectFieldCache == null)
{
BaseQuery.SelectAll(false);
}
var parameters = resultSelector.Parameters.Select(b => b.Type).ToArray();
var selectField = BaseQuery.GetSelectField(true, resultSelector.Body, true, parameters);
var prefix1 = BaseQuery.GetPrefix(typeof(TJoinResult));
var prefix2 = BaseQuery.GetPrefix(resultSelect.InnerType);
//替换匿名前辍
foreach (var item in selectField.mapping)
{
if (item.QueryFull.Contains(prefix1))
{
item.QueryFull = item.QueryFull.Replace(prefix1, prefix2);
}
}
BaseQuery.SetSelectFiled(selectField);
return(BaseQuery as LambdaQuery <T>);
}
