public IQueryable <TEntity> Sort(IQueryable <TEntity> entities)
{
IOrderedQueryable <TEntity> orderedEntities = null;
if (_param.order == null)
{
return(entities);
}
for (int i = 0; i < _param.order.Length; i++)
{
var order = _param.order[i];
int sortingColumn = order.column;
string sortingDirection = order.dir;
IDtoProperty <TEntity> property = _properties[sortingColumn];
Type keyType = property.SortBy.ReturnType;
var typeArguments = new[] { typeof(TEntity), keyType };
IPagingPropertySorter <TEntity> sorter = MakePropertySorter(typeArguments, property.SortBy);
if (string.IsNullOrEmpty(sortingDirection) || sortingDirection.Equals(Ascending))
{
orderedEntities = orderedEntities != null
? sorter.SortAscending(orderedEntities)
: sorter.SortAscending(entities);
}
else if (sortingDirection.Equals(Descending))
{
orderedEntities = orderedEntities != null
? sorter.SortDescending(orderedEntities)
: sorter.SortDescending(entities);
}
}
return(orderedEntities ?? entities);
}
public void OnePropertyWeakPropertyTests()
{
DtoInfo <OneProperty> info = DtoInfo.GetInfo <OneProperty>();
IDtoProperty <OneProperty> property = info.GetProperty("Integer");
property.Name.Should().Be("Integer");
property.ValueType.Should().Be(typeof(int));
property.IsReadOnly.Should().BeFalse();
((PropertyInfo)property.MemberInfo).GetMethod !.Name.Should().Be("get_Integer");
OneProperty dto = new() { Integer = 42 };
property.GetValue(dto).Should().Be(dto.Integer);
property.SetValue(dto, 24);
dto.Integer.Should().Be(24);
}
public void OneFieldWeakestFieldTests()
{
DtoInfo <OneField> info = DtoInfo.GetInfo <OneField>();
IDtoProperty property = info.Properties.Single();
property.Name.Should().Be("Integer");
property.ValueType.Should().Be(typeof(int));
property.IsReadOnly.Should().BeFalse();
((FieldInfo)property.MemberInfo).Name.Should().Be("Integer");
OneField dto = new() { Integer = 42 };
property.GetValue(dto).Should().Be(dto.Integer);
property.SetValue(dto, 24);
dto.Integer.Should().Be(24);
}
/// <summary>
/// Filters the entities
/// </summary>
/// <param name="entities">
/// The entities.
/// </param>
/// <returns>
/// The <see cref="IQueryable" />.
/// </returns>
public IQueryable <TEntity> Filter(IQueryable <TEntity> entities)
{
var expressions = new List <Expression <Func <TEntity, bool> > >();
if (_param.columns == null)
{
return(entities);
}
for (int i = 0; i < _param.columns.Length; i++)
{
var columns = _param.columns[i];
var search = columns.search;
if (columns.searchable && !string.IsNullOrEmpty(search.value) && search.value != "null")
{
IDtoProperty <TEntity> property = _properties.FirstOrDefault(l => l.ColumnHeader.ToLower() == columns.data.ToLower());
/**
* Use the ToUpper method to perform a case-ignorant contains operation
* I prefer the ToUpper method over its ToLower competitor because Microsoft
*/
MethodCallExpression searchExpr = Expression.Call(
Expression.Constant(search.value.Escape()), typeof(string).GetMethod("ToLower", new Type[0]));
MethodCallExpression valueToLowerExpression = Expression.Call(
property.ToSqlString.Body, typeof(string).GetMethod("ToLower", new Type[0]));
MethodCallExpression containsCall = Expression.Call(
valueToLowerExpression, typeof(string).GetMethod("Contains"), new Expression[] { searchExpr });
LambdaExpression resultCall = Expression.Lambda(containsCall, property.ToSqlString.Parameters);
expressions.Add(resultCall as Expression <Func <TEntity, bool> >);
}
}
if (expressions.Count != 0)
{
// glue all these expressions into one expression, combined with the AND operator
Expression <Func <TEntity, bool> > resultLambda = expressions.Aggregate((expr1, expr2) => expr1.And(expr2));
return(entities.Where(resultLambda));
}
return(entities);
}
public int?GetPropertyParameterIndex(IDtoProperty <T> property) => m_propertyIndices.TryGetValue(property, out var index) ? index : default(int?);
