/// <summary>
/// 根据设定的字段，生成查询重复数据的Lambda，最终返回类似 x=>x.property == val的lambda
/// </summary>
/// <param name="Entity">要验证字段的实体类</param>
/// <param name="para">ParameterExpression</param>
/// <returns></returns>
public virtual Expression GetExpression(T Entity, ParameterExpression para)
{
var propName = PropertyHelper.GetPropertyName(_directFieldExp);
var prop = PropertyHelper.GetPropertyInfo(_directFieldExp);
var func = _directFieldExp.Compile();
var val = func.Invoke(Entity);
////如果字段值为null则跳过，因为一般情况下null值不会被认为重复
//if (val == null)
//{
// return res;
//}
//如果字段值是空字符串，则跳过
if (val is string && val.ToString() == string.Empty)
{
var requiredAttrs = prop.GetCustomAttributes(typeof(RequiredAttribute), false).ToList();
if (requiredAttrs == null || requiredAttrs.Count == 0)
{
return(null);
}
else
{
var requiredAtt = requiredAttrs[0] as RequiredAttribute;
if (requiredAtt.AllowEmptyStrings == true)
{
return(null);
}
}
}
//生成一个表达式，类似于 x=>x.field == val
var splits = propName.Split('.');
var idproperty = typeof(T).GetProperties().Where(x => x.Name == splits[0]).FirstOrDefault();
Expression left = Expression.Property(para, idproperty);
for (int i = 1; i < splits.Length; i++)
{
var tempproperty = typeof(T).GetProperties().Where(x => x.Name == splits[i]).FirstOrDefault();
left = Expression.Property(left, tempproperty);
}
if (val != null && left.Type.IsGeneric(typeof(Nullable <>)))
{
left = Expression.Property(left, "Value");
}
if (left.Type == typeof(string))
{
left = Expression.Call(left, typeof(String).GetMethod("Trim", Type.EmptyTypes));
}
if (val is string)
{
val = val.ToString().Trim();
}
var right = Expression.Constant(val);
var equal = Expression.Equal(left, right);
return(equal);
}
public static GridAction MakeActionsGroup <T, V>(this IBasePagedListVM <T, V> self
, string name
, List <GridAction> subActions
, params Expression <Func <T, object> >[] whereStr)
where T : TopBasePoco
where V : ISearcher
{
var iconcls = string.Empty;
var list = new List <string>();
foreach (var item in whereStr)
{
list.Add(PropertyHelper.GetPropertyName(item));
}
return(new GridAction
{
ButtonId = Guid.NewGuid().ToString(),
Name = name,
DialogTitle = "",
Area = "",
ControllerName = "",
ActionName = "ActionsGroup",
ParameterType = GridActionParameterTypesEnum.NoId,
IconCls = iconcls,
DialogWidth = 0,
DialogHeight = 0,
ShowDialog = false,
whereStr = list.ToArray(),
SubActions = subActions
});
}
public SortInfo CreateSortInfo(Expression<Func<TModel, object>> pro, SortDir dir)
{
SortInfo rv = new SortInfo
{
Property = PropertyHelper.GetPropertyName(pro),
Direction = dir
};
return rv;
}
/// <summary>
/// 处理所有二进制类型的表达式
/// </summary>
/// <param name="node">当前表达式节点</param>
/// <returns>修改后的表达式</returns>
protected override Expression VisitBinary(BinaryExpression node)
{
//如果表达式是x==y的类型，则获取y的值，并使用x最为key，y的值作为value添加到Dictionary中保存
if (node.NodeType == ExpressionType.Equal)
{
var pi = PropertyHelper.GetPropertyName(node.Left.NodeType == ExpressionType.Convert ? ((UnaryExpression)node.Left).Operand : node.Left);
if (!_rv.ContainsKey(pi))
{
_rv.Add(pi, Expression.Lambda(node.Right).Compile().DynamicInvoke());
}
}
return(base.VisitBinary(node));
}
/// <summary>
/// 查找where中是否出现过对于IsValid的判断
/// </summary>
/// <param name="node"></param>
/// <returns></returns>
protected override Expression VisitBinary(BinaryExpression node)
{
//如果表达式是x==y的类型，则获取y的值，并使用x最为key，y的值作为value添加到Dictionary中保存
if (_mode == 0)
{
if (node.NodeType == ExpressionType.Equal)
{
var pi = PropertyHelper.GetPropertyName(node.Left);
if (pi.ToLower() == "isvalid")
{
_needAdd = false;
}
}
}
return(base.VisitBinary(node));
}
/// <summary>
/// 创建标准动作
/// </summary>
/// <typeparam name="T">继承自TopBasePoco的类</typeparam>
/// <typeparam name="V">继承自ISearcher的类</typeparam>
/// <param name="self">self</param>
/// <param name="controllerName">动作的Controller</param>
/// <param name="actionName">actionName</param>
/// <param name="name">动作名，默认为‘新建’</param>
/// <param name="dialogTitle">弹出窗口的标题</param>
/// <param name="paraType">paraType</param>
/// <param name="areaName">域名</param>
/// <param name="dialogWidth">弹出窗口的宽度</param>
/// <param name="dialogHeight">弹出窗口的高度</param>
/// <param name="buttonId">Button的id 默认自动生成</param>
/// <param name="whereStr">whereStr</param>
/// <returns>列表动作</returns>
/// <remarks>
/// 根据标准动作类型，创建默认属性的标准动作
/// </remarks>
public static GridAction MakeAction <T, V>(this IBasePagedListVM <T, V> self
, string controllerName
, string actionName
, string name
, string dialogTitle
, GridActionParameterTypesEnum paraType
, string areaName = null
, int?dialogWidth = null
, int?dialogHeight = null
, string buttonId = null
, params Expression <Func <T, object> >[] whereStr)
where T : TopBasePoco
where V : ISearcher
{
var iconcls = string.Empty;
var list = new List <string>();
foreach (var item in whereStr)
{
list.Add(PropertyHelper.GetPropertyName(item));
}
return(new GridAction
{
ButtonId = buttonId,
Name = name,
DialogTitle = dialogTitle,
Area = areaName,
ControllerName = controllerName,
ActionName = actionName,
ParameterType = paraType,
IconCls = iconcls,
DialogWidth = dialogWidth ?? 800,
DialogHeight = dialogHeight,
ShowDialog = true,
whereStr = list.ToArray()
});
}
/// <summary>
/// 创建标准动作
/// </summary>
/// <typeparam name="T">继承自TopBasePoco的类</typeparam>
/// <typeparam name="V">继承自ISearcher的类</typeparam>
/// <param name="self">self</param>
/// <param name="controllerName">动作的Controller</param>
/// <param name="standardType">标准动作类型</param>
/// <param name="dialogTitle">弹出窗口的标题</param>
/// <param name="areaName">域名</param>
/// <param name="dialogWidth">弹出窗口的宽度</param>
/// <param name="dialogHeight">弹出窗口的高度</param>
/// <param name="name">动作名，默认为‘新建’</param>
/// <param name="buttonId">Button的id 默认自动生成</param>
/// <param name="whereStr">whereStr</param>
/// <returns>列表动作</returns>
/// <remarks>
/// 根据标准动作类型，创建默认属性的标准动作
/// </remarks>
public static GridAction MakeStandardAction <T, V>(this IBasePagedListVM <T, V> self
, string controllerName
, GridActionStandardTypesEnum standardType
, string dialogTitle
, string areaName = null
, int?dialogWidth = null
, int?dialogHeight = null
, string name = null
, string buttonId = null
, string queryString = null
, string urlParampter = null
, params Expression <Func <T, object> >[] whereStr)
where T : TopBasePoco
where V : ISearcher
{
var iconcls = string.Empty;
var actionName = standardType.ToString();
var gridname = string.Empty;
var paraType = GridActionParameterTypesEnum.NoId;
var showInRow = false;
var hideOnToolBar = false;
switch (standardType)
{
case GridActionStandardTypesEnum.Create:
iconcls = "layui-icon-add-1";
gridname = "新建";
paraType = GridActionParameterTypesEnum.NoId;
break;
case GridActionStandardTypesEnum.AddRow:
iconcls = "layui-icon-add-1";
gridname = "新建";
paraType = GridActionParameterTypesEnum.AddRow;
break;
case GridActionStandardTypesEnum.Edit:
iconcls = "layui-icon-edit";
gridname = "修改";
paraType = GridActionParameterTypesEnum.SingleId;
showInRow = true;
hideOnToolBar = true;
break;
case GridActionStandardTypesEnum.Delete:
iconcls = "layui-icon-delete";
gridname = "删除";
paraType = GridActionParameterTypesEnum.SingleId;
showInRow = true;
hideOnToolBar = true;
break;
case GridActionStandardTypesEnum.RemoveRow:
iconcls = "layui-icon-delete";
gridname = "删除";
paraType = GridActionParameterTypesEnum.RemoveRow;
showInRow = true;
hideOnToolBar = true;
break;
case GridActionStandardTypesEnum.Details:
iconcls = "layui-icon-form";
gridname = string.IsNullOrEmpty(name) ? "详细" : name;
paraType = GridActionParameterTypesEnum.SingleId;
showInRow = true;
hideOnToolBar = true;
break;
case GridActionStandardTypesEnum.CustomAction:
iconcls = "layui-icon-form";
gridname = string.IsNullOrEmpty(name) ? "自定义" : name;
paraType = GridActionParameterTypesEnum.SingleId;
showInRow = true;
hideOnToolBar = true;
break;
case GridActionStandardTypesEnum.BatchEdit:
iconcls = "layui-icon-edit";
gridname = "批量修改";
paraType = GridActionParameterTypesEnum.MultiIds;
break;
case GridActionStandardTypesEnum.BatchDelete:
iconcls = "layui-icon-delete";
gridname = "批量删除";
paraType = GridActionParameterTypesEnum.MultiIds;
break;
case GridActionStandardTypesEnum.Import:
iconcls = "layui-icon-templeate-1";
gridname = "导入";
paraType = GridActionParameterTypesEnum.NoId;
break;
case GridActionStandardTypesEnum.Index:
iconcls = "layui-icon-templeate-1";
gridname = name == string.Empty?"跳转":name;
paraType = GridActionParameterTypesEnum.IndexUrl;
showInRow = true;
hideOnToolBar = true;
break;
default:
break;
}
var list = new List <string>();
foreach (var item in whereStr)
{
list.Add(PropertyHelper.GetPropertyName(item));
}
return(new GridAction
{
ButtonId = buttonId,
Name = (name ?? gridname),
DialogTitle = dialogTitle,
Area = areaName,
ControllerName = controllerName,
ActionName = actionName,
ParameterType = paraType,
QueryString = queryString,
UrlParam = urlParampter,
IconCls = iconcls,
DialogWidth = dialogWidth ?? 800,
DialogHeight = dialogHeight,
ShowInRow = showInRow,
ShowDialog = true,
HideOnToolBar = hideOnToolBar,
whereStr = list.ToArray()
});
}
/// <summary>
/// 创建标准动作
/// </summary>
/// <typeparam name="T">继承自TopBasePoco的类</typeparam>
/// <typeparam name="V">继承自ISearcher的类</typeparam>
/// <param name="self">self</param>
/// <param name="controllerName">动作的Controller</param>
/// <param name="standardType">标准动作类型</param>
/// <param name="dialogTitle">弹出窗口的标题，可为空，代表使用默认文字</param>
/// <param name="areaName">域名</param>
/// <param name="dialogWidth">弹出窗口的宽度</param>
/// <param name="dialogHeight">弹出窗口的高度</param>
/// <param name="name">按钮显示的文字</param>
/// <param name="buttonId">Button的id 默认自动生成</param>
/// <param name="whereStr">whereStr</param>
/// <returns>列表动作</returns>
/// <remarks>
/// 根据标准动作类型，创建默认属性的标准动作
/// </remarks>
public static GridAction MakeStandardAction <T, V>(this IBasePagedListVM <T, V> self
, string controllerName
, GridActionStandardTypesEnum standardType
, string dialogTitle
, string areaName = null
, int?dialogWidth = null
, int?dialogHeight = null
, string name = null
, string buttonId = null
, params Expression <Func <T, object> >[] whereStr)
where T : TopBasePoco
where V : ISearcher
{
var iconcls = string.Empty;
var actionName = standardType.ToString();
var gridname = string.Empty;
var paraType = GridActionParameterTypesEnum.NoId;
var showInRow = false;
var hideOnToolBar = false;
var showDialog = true;
switch (standardType)
{
case GridActionStandardTypesEnum.Create:
iconcls = "layui-icon layui-icon-add-1";
gridname = Program._localizer["Create"];
paraType = GridActionParameterTypesEnum.NoId;
break;
case GridActionStandardTypesEnum.AddRow:
iconcls = "layui-icon layui-icon-add-1";
gridname = Program._localizer["Create"];
paraType = GridActionParameterTypesEnum.AddRow;
break;
case GridActionStandardTypesEnum.Edit:
iconcls = "layui-icon layui-icon-edit";
gridname = Program._localizer["Edit"];
paraType = GridActionParameterTypesEnum.SingleId;
showInRow = true;
hideOnToolBar = true;
break;
case GridActionStandardTypesEnum.Delete:
iconcls = "layui-icon layui-icon-delete";
gridname = Program._localizer["Delete"];
paraType = GridActionParameterTypesEnum.SingleId;
showInRow = true;
hideOnToolBar = true;
break;
case GridActionStandardTypesEnum.RemoveRow:
iconcls = "layui-icon layui-icon-delete";
gridname = Program._localizer["Delete"];
paraType = GridActionParameterTypesEnum.RemoveRow;
showInRow = true;
hideOnToolBar = true;
break;
case GridActionStandardTypesEnum.Details:
iconcls = "layui-icon layui-icon-form";
gridname = Program._localizer["Details"];
paraType = GridActionParameterTypesEnum.SingleId;
showInRow = true;
hideOnToolBar = true;
break;
case GridActionStandardTypesEnum.BatchEdit:
iconcls = "layui-icon layui-icon-edit";
gridname = Program._localizer["BatchEdit"];
paraType = GridActionParameterTypesEnum.MultiIds;
break;
case GridActionStandardTypesEnum.BatchDelete:
iconcls = "layui-icon layui-icon-delete";
gridname = Program._localizer["BatchDelete"];
paraType = GridActionParameterTypesEnum.MultiIds;
break;
case GridActionStandardTypesEnum.Import:
iconcls = "layui-icon layui-icon-templeate-1";
gridname = Program._localizer["Import"];
paraType = GridActionParameterTypesEnum.NoId;
break;
case GridActionStandardTypesEnum.ExportExcel:
iconcls = "layui-icon layui-icon-download-circle";
gridname = Program._localizer["Export"];
paraType = GridActionParameterTypesEnum.MultiIdWithNull;
name = Program._localizer["ExportExcel"];
showInRow = false;
showDialog = false;
hideOnToolBar = false;
break;
default:
break;
}
if (string.IsNullOrEmpty(dialogTitle))
{
dialogTitle = gridname;
}
var list = new List <string>();
foreach (var item in whereStr)
{
list.Add(PropertyHelper.GetPropertyName(item));
}
return(new GridAction
{
ButtonId = buttonId,
Name = (name ?? gridname),
DialogTitle = dialogTitle,
Area = areaName,
ControllerName = controllerName,
ActionName = actionName,
ParameterType = paraType,
IconCls = iconcls,
DialogWidth = dialogWidth ?? 800,
DialogHeight = dialogHeight,
ShowInRow = showInRow,
ShowDialog = showDialog,
HideOnToolBar = hideOnToolBar,
whereStr = list.ToArray()
});
}
