/// <summary>
/// 转换成Linq查询条件
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <returns></returns>
public Expression <Func <TEntity, bool> > ToLinq <TEntity, TKey>()
where TEntity : class, IAggregateRoot <TEntity, TKey>
{
Expression <Func <TEntity, bool> > predicate = null;
if (Field.IsNotNullOrEmpty() && Value.IsNotNullOrEmpty())
{
switch (Operator)
{
case OperatorCompare.Equal:
predicate = Lambda.Equal <TEntity>(Field, Value);
break;
case OperatorCompare.Greater:
predicate = Lambda.Greater <TEntity>(Field, Value);
break;
case OperatorCompare.GreaterEqual:
predicate = Lambda.GreaterEqual <TEntity>(Field, Value);
break;
case OperatorCompare.Less:
predicate = Lambda.Less <TEntity>(Field, Value);
break;
case OperatorCompare.LessEqual:
predicate = Lambda.LessEqual <TEntity>(Field, Value);
break;
case OperatorCompare.NotEqual:
predicate = Lambda.NotEqual <TEntity>(Field, Value);
break;
}
}
// 根据时间和基准时间构建表达式
predicate = TimeType.GetPredicate <TEntity, TKey>(ReferTime, predicate);
return(predicate);
}
public TEntity GetLastSingle(TimeType timeType, DateTime dateTime, Expression <Func <TEntity, bool> > predicate)
{
predicate = timeType.GetPredicate <TEntity, TKey>(dateTime, predicate);
return(GetSingle(predicate));
}
public IEnumerable <TEntity> GetLastList(TimeType timeType, DateTime dateTime,
Expression <Func <TEntity, bool> > predicate)
{
predicate = timeType.GetPredicate <TEntity, TKey>(dateTime, predicate);
return(GetList(predicate));
}
