/// <summary>
/// 关联删除
/// </summary>
/// <typeparam name="TModel"></typeparam>
/// <typeparam name="TJoin"></typeparam>
/// <param name="expression"></param>
/// <returns></returns>
public override int Delete <TModel, TJoin>(Expression <Func <TModel, TJoin, bool> > expression)
{
var query = new RelationLambdaQuery <TModel>(dbContext);
query.Join <TJoin>(expression);
return(Delete(query));
}
/// <summary>
/// 关联更新
/// </summary>
/// <typeparam name="TModel"></typeparam>
/// <typeparam name="TJoin"></typeparam>
/// <param name="expression"></param>
/// <param name="updateValue"></param>
/// <returns></returns>
public override int Update <TModel, TJoin>(Expression <Func <TModel, TJoin, bool> > expression, ParameCollection updateValue)
{
var query = new RelationLambdaQuery <TModel>(dbContext);
query.Join <TJoin>(expression);
return(Update(query, updateValue));
}
/// <summary>
/// 指定条件删除
/// </summary>
/// <typeparam name="TModel"></typeparam>
/// <param name="expression"></param>
/// <returns></returns>
public override int Delete <TModel>(Expression <Func <TModel, bool> > expression)
{
LambdaQuery <TModel> query = new RelationLambdaQuery <TModel>(dbContext, false);
query.Where(expression);
string condition = query.FormatExpression(expression.Body).SqlOut;
query.FillParames(this);
return(Delete <TModel>(condition));
}
internal override TType GetFunction <TType, TModel>(Expression <Func <TModel, bool> > expression, Expression <Func <TModel, TType> > selectField, FunctionType functionType, bool compileSp = false)
{
LambdaQuery <TModel> query = new RelationLambdaQuery <TModel>(dbContext, true);
query.Select(selectField.Body);
query.__FieldFunctionFormat = string.Format("{0}({1}) as Total", functionType, "{0}");
query.Where(expression);
var result = QueryScalar(query);
if (result == null || result is DBNull)
{
return(default(TType));
}
return((TType)result);
}
