private static List <SelectListItem> GetSelectedListItems(
PropertyMetaData property, System.Collections.IEnumerable source)
{
var result = new List <SelectListItem>();
var relatedPropertyType = property.ForeignType();
var foreignMetaData = MetaDataProvider.Get(relatedPropertyType);
var first = true;
PropertyInfo propertyInfo = null;
foreach (var o in source)
{
object id;
if (first)
{
propertyInfo = o.GetType().GetProperty(property.Info.Name);
first = false;
}
if (propertyInfo != null)
{
id = o.GetValue(property.Info.Name);
}
else
{
id = o.GetValue(LinqToSqlUtils.GetPKPropertyName(
foreignMetaData.EntityType));
}
result.Add(new SelectListItem
{
Text = GetDisplay(o, foreignMetaData).ToString(),
Value = id.ToString()
});
}
return(result.OrderBy(sli => sli.Text).ToList());
}
public static Expression <Func <DataContext, object, K> > GetExpression()
{
var _type = typeof(K);
var itemParameter = Expression.Parameter(_type, "item");
var pkParameter = Expression.Parameter(typeof(object), "pk");
var dcParameter = Expression.Parameter(typeof(DataContext), "dc");
Expression <Func <IQueryable <K>, K> > exp = x => x.FirstOrDefault(y => true);
Expression <Func <DataContext, Table <K> > > exp2 = x => x.GetTable <K>();
var firstOrDefaultInfo = ((MethodCallExpression)exp.Body).Method;
var getTableInfo = ((MethodCallExpression)exp2.Body).Method;
var pkPropertyName = LinqToSqlUtils.GetPKPropertyName(_type);
var pkProperty = Expression.Property(
itemParameter,
pkPropertyName
);
return(Expression.Lambda <Func <DataContext, object, K> >(
Expression.Call(null,
firstOrDefaultInfo,
Expression.Call(dcParameter, getTableInfo), Expression.Lambda <Func <K, bool> >
(
Expression.Equal(
Expression.Convert(pkProperty, typeof(object)),
pkParameter
),
new[] { itemParameter }
)), new[] { dcParameter, pkParameter }));
}
public virtual IQueryable GetComboBoxSource(
PropertyMetaData propertyMetaData, bool onlyActive, string filter)
{
var relatedMeta = MetaDataProvider.Get(
propertyMetaData.ForeignType());
var idProperty = LinqToSqlUtils.GetPKPropertyName(relatedMeta.EntityType);
var selector = "new(" + idProperty +
" as " + propertyMetaData.Info.Name +
", " + relatedMeta.DisplayProperty().Name + ")";
var result =
DynamicRepository.GetAll(propertyMetaData.ForeignType());
if (filter != null)
{
result = result.Where(filter);
}
/* if(onlyActive)
* foreach (var property in Const.Common.ActiveProperties)
* {
* if(propertyMetaData.ForeignType.HasProperty(property))
* result = result.Where(property);
* }*/
return(result.Select(selector));
}
public virtual ActionResult List(int pageIndex, OrderColumn orderColumn)
{
var currentFilterValues = GetCurrentFilterValues();
var items = AddFilterToList(currentFilterValues);
if (orderColumn.ColumnName.IsEmpty())
{
if (MetaData.EntityType.HasProperty(UpdateDate))
{
orderColumn = new OrderColumn {
IsDesc = true,
ColumnName = UpdateDate,
};
}
else
{
orderColumn = new OrderColumn {
IsDesc = true,
ColumnName =
LinqToSqlUtils.GetPKPropertyName(MetaData.EntityType)
}
};
}
if (!orderColumn.ColumnName.IsEmpty())
{
var orderQuery = orderColumn.ColumnName;
if (orderColumn.IsDesc)
{
orderQuery += " " + Const.Common.Descending;
}
items = items.OrderBy(orderQuery);
}
items = OnListSelecting(items);
var tableData = new List <ListVM.Row>();
var pagedList = items.ToPagedList(pageIndex - 1);
foreach (var item in pagedList)
{
var id = LinqToSqlUtils.GetPK(item);
var list = GetValuesForRow(item);
tableData.Add(new ListVM.Row {
Id = id, Entity = item, Values = list
});
}
var listVM = new ListVM(MetaData, pagedList, tableData);
AddExtraControls(listVM, true);
listVM.FilterValues = currentFilterValues;
listVM.OrderColumn = orderColumn;
ListVMCreated(listVM);
return(View(listVM));
}
public virtual IQueryable GetSource(Type entityType)
{
var relatedMeta = MetaDataProvider.Get(entityType);
var idProperty = LinqToSqlUtils.GetPKPropertyName(relatedMeta.EntityType);
var selector = "new(" + idProperty +
", " + relatedMeta.DisplayProperty().Name + ")";
return(DynamicRepository.GetAll(
entityType)
.Select(selector));
}
public static T ByPrimeryKey <T>(this IQueryable <T> queryable,
object primeryKey)
{
if (primeryKey == null)
{
return(default(T));
}
var type = typeof(T);
return(queryable.Where(LinqToSqlUtils.GetPKPropertyName(type) +
" = @0", primeryKey).FirstOrDefault());
}
public static object GetObject(Type type, object id)
{
var constructor = type.GetConstructors()[0];
var obj = constructor.Invoke(null);
var publicPIs = type.GetProperties();
var associationPIs = publicPIs.Where(pi => pi.HasAttribute(typeof(AssociationAttribute)));
var thisKeys = associationPIs.Select(pi => pi.GetAttribute <AssociationAttribute>().ThisKey);
var idPropertyname = LinqToSqlUtils.GetPKPropertyName(type);
foreach (var propertyInfo in publicPIs)
{
object value = null;
if (propertyInfo.Name == idPropertyname)
{
value = Convert.ChangeType(id, propertyInfo.PropertyType);
}
else if (thisKeys.Contains(propertyInfo.Name))
{
continue;
}
else if (propertyInfo.PropertyType == typeof(string))
{
value = propertyInfo.Name + id;
}
if (propertyInfo.CanWrite)
{
propertyInfo.SetValue(obj, value, new object[0]);
}
}
var foreignKeyPIs = associationPIs.Where(pi => pi.GetAttribute <AssociationAttribute>().IsForeignKey);
foreach (var propertyInfo in foreignKeyPIs)
{
if (propertyInfo.PropertyType == type)
{
continue;
}
var idPI = LinqToSqlUtils.GetPKPropertyInfo(propertyInfo.PropertyType);
if (propertyInfo.CanWrite)
{
propertyInfo.SetValue(obj, GetObject(propertyInfo.PropertyType,
GetDefaultId(idPI.PropertyType)), new object[0]);
}
}
return(obj);
}
public virtual IQueryable <T> GetByPK(IEnumerable <object> pkList)
{
if (!pkList.Any())
{
return(Enumerable.Empty <T>().AsQueryable());
}
var idPropertyName = LinqToSqlUtils.GetPKPropertyName(_type);
var where = pkList.Select((pk, index) =>
string.Format(" {0} == @{1} ", idPropertyName, index))
.JoinWith(" || ");
return(GetAll().Where(where, pkList.ToArray()));
// return GetAll().Where(LinqToSqlUtil.WhereContains<T>(pkList.AsQueryable()));
}
public string GetSelector(PropertyMetaData propertyMetaData,
bool withoutProperty)
{
var relatedMeta = MetaDataProvider.Get(propertyMetaData.ForeignType());
var property = string.Empty;
if (!withoutProperty && propertyMetaData.ForeignInfo() != null)
{
property = propertyMetaData.ForeignInfo().Name + ".";
}
var idProperty = property
+ LinqToSqlUtils.GetPKPropertyName(relatedMeta.EntityType);
return("new(" + idProperty +
" as " + propertyMetaData.Info.Name +
", " + property +
relatedMeta.DisplayProperty().Name + ")");
}
public virtual T GetByPK(object pk)
{
/*return context.GetTable<T>().Where(LinqToSqlUtil.GetIdPropertyName(_type) +
* " = @0", id).FirstOrDefault();*/
var itemParameter = Expression.Parameter(_type, "item");
var whereExpression = Expression.Lambda <Func <T, bool> >
(
Expression.Equal(
Expression.Property(
itemParameter,
LinqToSqlUtils.GetPKPropertyName(_type)
),
Expression.Constant(pk)
),
new[] { itemParameter }
);
return(GetAll().FirstOrDefault(whereExpression));
}
private void AddFilterValueToSource(PropertyMetaData propertyMetaData,
object filterValue, ICollection <object> source)
{
var nameValue = source.Where(o => o.GetValue(propertyMetaData.Info.Name)
.Equals(filterValue));
if (nameValue.Count() == 0)
{
var foreignType = propertyMetaData.ForeignType();
// if(propertyMetaData.ForeignInfo() != null)
var item = DynamicRepository.GetAll(
foreignType)
.Where(LinqToSqlUtils
.GetPKPropertyName(foreignType) + "= @0", filterValue)
.Select(GetSelector(propertyMetaData, true))
.Cast <object>().First();
/* else {
* item = DynamicRepository.GetByPK( foreignType, filterValue); }*/
source.Add(item);
}
}
public static IQueryable <T> GetByPKList(IQueryable <T> list,
IEnumerable <object> pkList)
{
var idPropertyName = LinqToSqlUtils.GetPKPropertyName(typeof(T));
var where = pkList.Select((pk, index) =>
string.Format("{0} == @{1} ", idPropertyName, index))
.JoinWith(" || ");
return(list.Where(where, pkList.ToArray()));
}
