/// <summary>
/// 用==表示值被更改
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="obj"></param>
/// <param name="expression"></param>
public static void Change <T>(this T obj, Expression <Func <T, bool> > expression) where T : CRL.IModel, new()
{
if (expression.Body is BinaryExpression)
{
BinaryExpression be = ((BinaryExpression)expression.Body);
MemberExpression mExp = (MemberExpression)be.Left;
string name = mExp.Member.Name;
var right = be.Right;
object value;
if (right is ConstantExpression)
{
ConstantExpression cExp = (ConstantExpression)right;
value = cExp.Value;
}
else
{
value = LambdaCompileCache.GetExpressionCacheValue(right);
//value = Expression.Lambda(right).Compile().DynamicInvoke();
}
obj.SetChanges(name, value);
}
else
{
obj.Change <T, bool>(expression);
}
}
List <TModel> QueryFromCacheBase(Expression <Func <TModel, bool> > expression, out int total, int pageIndex = 0, int pageSize = 0)
{
total = 0;
#region KEY查找
if (expression.Body is BinaryExpression)
{
var binary = expression.Body as BinaryExpression;
if (binary.NodeType == ExpressionType.Equal)
{
if (binary.Left is MemberExpression)
{
var member = binary.Left as MemberExpression;
var primaryKey = TypeCache.GetTable(typeof(TModel)).PrimaryKey.Name;
if (member.Member.Name.ToUpper() == primaryKey.ToUpper())
{
var value = (int)LambdaCompileCache.GetExpressionCacheValue(binary.Right);
//var value = (int)Expression.Lambda(binary.Right).Compile().DynamicInvoke();
var all = GetCache(CacheQuery());
if (all == null)
{
return(new List <TModel>());
}
if (all.ContainsKey(value))
{
total = 1;
return(new List <TModel>()
{
all[value]
});
}
return(new List <TModel>());
}
}
}
}
#endregion
var predicate = expression.Compile();
var data = AllCache.Where(predicate);
total = data.Count();
if (pageIndex > 0)
{
var data2 = Base.CutList(data, pageIndex, pageSize);
return(data2);
}
return(data.ToList());
}
