public static void Validate(HandleNullPropagationOption value, string parameterValue)
{
if (!IsDefined(value))
{
throw Error.InvalidEnumArgument(parameterValue, (int)value, typeof(HandleNullPropagationOption));
}
}
public static void Validate(HandleNullPropagationOption value, string parameterValue)
{
if (!IsDefined(value))
{
throw Error.InvalidEnumArgument(parameterValue, (int)value, typeof(HandleNullPropagationOption));
}
}
public static bool IsDefined(HandleNullPropagationOption value)
{
if ((value != HandleNullPropagationOption.Default) && (value != HandleNullPropagationOption.True))
{
return (value == HandleNullPropagationOption.False);
}
return true;
}
public static Expression <Func <T, bool> > ToFilterExpression <T>(this ODataQueryOptions <T> options,
HandleNullPropagationOption handleNullPropagation = HandleNullPropagationOption.Default,
TimeZoneInfo timeZone = null)
{
if (options is null || options.Filter is null && options.Search is null)
{
return(null);
}
var parameter = Expression.Parameter(typeof(T), "$it");
Expression filterExpression = null;
if (options.Filter is not null)
{
var raw = options.Filter.ToFilterExpression <T>(handleNullPropagation, timeZone);
filterExpression = raw.Body.ReplaceParameter(raw.Parameters[0], parameter);
}
Expression searchExpression = null;
if (options.Search is not null)
{
var raw = options.Search.ToSearchExpression <T>(handleNullPropagation, timeZone);
searchExpression = raw.Body.ReplaceParameter(raw.Parameters[0], parameter);
}
Expression finalExpression = null;
if (filterExpression is not null && searchExpression is not null)
{
finalExpression = Expression.AndAlso(searchExpression, filterExpression);
}
finalExpression ??= filterExpression ?? searchExpression;
return(Expression.Lambda <Func <T, bool> >(finalExpression, parameter));
}
/// <summary>
/// Returns a lambda expresion representing the filter
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="filterOption"></param>
/// <returns></returns>
public static Expression <Func <T, bool> > ToFilterExpression <T>(this FilterQueryOption filterOption, HandleNullPropagationOption handleNullPropagation = HandleNullPropagationOption.Default)
{
if (filterOption == null)
{
return(null);
}
IQueryable queryable = Enumerable.Empty <T>().AsQueryable();
queryable = filterOption.ApplyTo(queryable, new ODataQuerySettings()
{
HandleNullPropagation = handleNullPropagation
});
MethodCallExpression whereMethodCallExpression = (MethodCallExpression)queryable.Expression;
return((Expression <Func <T, bool> >)(whereMethodCallExpression.Arguments[1].Unquote() as LambdaExpression));
}
public static bool IsDefined(HandleNullPropagationOption value)
{
return value == HandleNullPropagationOption.Default ||
value == HandleNullPropagationOption.True ||
value == HandleNullPropagationOption.False;
}
public static bool IsDefined(HandleNullPropagationOption value)
{
return(value == HandleNullPropagationOption.Default ||
value == HandleNullPropagationOption.True ||
value == HandleNullPropagationOption.False);
}
public static async Task <IQueryable <TModel> > GetQueryAsync <TModel, TData>(this IQueryable <TData> query, IMapper mapper, ODataQueryOptions <TModel> options, HandleNullPropagationOption handleNullPropagation = HandleNullPropagationOption.Default)
where TModel : class
{
ICollection <Expression <Func <IQueryable <TModel>, IIncludableQueryable <TModel, object> > > > includeExpressions = options.SelectExpand.GetIncludes().BuildIncludesExpressionCollection <TModel>()?.ToList();
Expression <Func <TModel, bool> > filter = options.Filter.ToFilterExpression <TModel>(handleNullPropagation);
Expression <Func <IQueryable <TModel>, IQueryable <TModel> > > queryableExpression = options.GetQueryableExpression();
return(await query.GetQueryAsync(mapper, filter, queryableExpression, includeExpressions));
}
public static async Task <ICollection <TModel> > GetAsync <TModel, TData>(this IQueryable <TData> query, IMapper mapper, ODataQueryOptions <TModel> options, HandleNullPropagationOption handleNullPropagation = HandleNullPropagationOption.False)
where TModel : class
{
Expression <Func <TModel, bool> > filter = options.Filter.ToFilterExpression <TModel>(handleNullPropagation);
Expression <Func <IQueryable <TModel>, IQueryable <TModel> > > queryableExpression = options.GetQueryableExpression();
Expression <Func <IQueryable <TModel>, long> > countExpression = LinqExtensions.GetCountExpression <TModel>(filter);
options.AddExpandOptionsResult();
if (options.Count?.Value == true)
{
options.AddCountOptionsResult <TModel, TData>(await query.QueryAsync(mapper, countExpression));
}
return(await query.GetAsync(mapper, filter, queryableExpression));
}
public NHQueryHelper(bool enableConstantParameterization, bool ensureStableOrdering, HandleNullPropagationOption handleNullPropagation, int pageSize)
: base(enableConstantParameterization, ensureStableOrdering, handleNullPropagation, pageSize)
{
}
public void CreateNamedPropertyExpression_WithDerivedProperty_ReturnsMemberAccessExpression(HandleNullPropagationOption options)
{
SelectExpandBinder binder = GetBinder <Customer>(_model, options);
//Expression customer = Expression.Parameter(typeof(Customer)); output will be different.
Expression customer = Expression.Constant(new Customer());
IEdmStructuralProperty vipAddressProperty = _vipCustomer.StructuralProperties().Single(c => c.Name == "VipAddress");
ODataSelectPath selectPath = new ODataSelectPath(new TypeSegment(_vipCustomer, _customer, null),
new PropertySegment(vipAddressProperty));
PathSelectItem pathSelectItem = new PathSelectItem(selectPath);
NamedPropertyExpression namedProperty = binder.CreateNamedPropertyExpression(customer, _customer, pathSelectItem);
Assert.NotNull(namedProperty);
Assert.Equal("\"VipAddress\"", namedProperty.Name.ToString());
if (options != HandleNullPropagationOption.True)
{
Assert.Equal("(value(NS.Customer) As VipCustomer).VipAddress", namedProperty.Value.ToString());
}
else
{
Assert.Equal("IIF(((value(NS.Customer) As VipCustomer) == null)," +
" null," +
" (value(NS.Customer) As VipCustomer).VipAddress)", namedProperty.Value.ToString());
}
}
public void CreateNamedPropertyExpression_NonDerivedProperty_ReturnsMemberAccessExpression(HandleNullPropagationOption options)
{
SelectExpandBinder binder = GetBinder <Customer>(_model, options);
Expression customer = Expression.Constant(new Customer());
IEdmStructuralProperty homeAddressProperty = _customer.StructuralProperties().Single(c => c.Name == "HomeLocation");
ODataSelectPath selectPath = new ODataSelectPath(new PropertySegment(homeAddressProperty));
PathSelectItem pathSelectItem = new PathSelectItem(selectPath);
NamedPropertyExpression namedProperty = binder.CreateNamedPropertyExpression(customer, _customer, pathSelectItem);
Assert.NotNull(namedProperty);
Assert.Equal("\"HomeLocation\"", namedProperty.Name.ToString());
if (options != HandleNullPropagationOption.True)
{
Assert.Equal("value(NS.Customer).HomeLocation", namedProperty.Value.ToString());
}
else
{
Assert.Equal("IIF((value(NS.Customer) == null)," +
" null," +
" value(NS.Customer).HomeLocation)", namedProperty.Value.ToString());
}
}
public void CreateNamedPropertyExpression_WithMultiplePropertyAndType_ReturnsMemberAccessExpression(HandleNullPropagationOption options)
{
SelectExpandBinder binder = GetBinder <Customer>(_model, options);
Expression customer = Expression.Parameter(typeof(Customer)); // output will be different.
// Expression customer = Expression.Constant(new Customer());
SelectExpandClause selectExpandClause = ParseSelectExpand("HomeLocation/NS.CnAddress/Street", null);
PathSelectItem pathSelectItem = selectExpandClause.SelectedItems.First() as PathSelectItem;
NamedPropertyExpression namedProperty = binder.CreateNamedPropertyExpression(customer, _customer, pathSelectItem);
Assert.NotNull(namedProperty);
/*
* Assert.NotNull(namedProperty);
* Assert.Equal("\"VipAddress\"", namedProperty.Name.ToString());
*
* if (options != HandleNullPropagationOption.True)
* {
* Assert.Equal("(value(NS.Customer) As VipCustomer).VipAddress", namedProperty.Value.ToString());
* }
* else
* {
* Assert.Equal("IIF(((value(NS.Customer) As VipCustomer) == null)," +
* " null," +
* " (value(NS.Customer) As VipCustomer).VipAddress)", namedProperty.Value.ToString());
* }*/
}
public static async Task <IQueryable <TModel> > GetQueryAsync <TModel, TData>(this IQueryable <TData> query, IMapper mapper, ODataQueryOptions <TModel> options, HandleNullPropagationOption handleNullPropagation = HandleNullPropagationOption.False)
where TModel : class
=> await query.GetQueryAsync(mapper, options, new QuerySettings { ODataSettings = new ODataSettings {
HandleNullPropagation = handleNullPropagation
} });
public static ICollection <TModel> Get <TModel, TData>(this IQueryable <TData> query, IMapper mapper, ODataQueryOptions <TModel> options, HandleNullPropagationOption handleNullPropagation = HandleNullPropagationOption.False)
where TModel : class
=> query.Get(mapper, options, new QuerySettings {
ODataSettings = new ODataSettings {
HandleNullPropagation = handleNullPropagation
}
});
public QueryHelper(bool enableConstantParameterization, bool ensureStableOrdering, HandleNullPropagationOption handleNullPropagation, int?pageSize)
{
this.querySettings = NewODataQuerySettings(enableConstantParameterization, ensureStableOrdering, handleNullPropagation, pageSize);
}
public static ODataQuerySettings NewODataQuerySettings(bool enableConstantParameterization, bool ensureStableOrdering, HandleNullPropagationOption handleNullPropagation, int?pageSize)
{
var settings = new ODataQuerySettings()
{
EnableConstantParameterization = enableConstantParameterization,
EnsureStableOrdering = ensureStableOrdering,
HandleNullPropagation = handleNullPropagation,
PageSize = pageSize > 0 ? pageSize : null
};
return(settings);
}
public void CreateNamedPropertyExpression_WithMultipleProperty_ReturnsMemberAccessExpression(HandleNullPropagationOption options)
{
SelectExpandBinder binder = GetBinder <Customer>(_model, options);
//Expression customer = Expression.Parameter(typeof(Customer)); output will be different.
Expression customer = Expression.Constant(new Customer());
IEdmStructuralProperty homeLocationProperty = _customer.StructuralProperties().Single(c => c.Name == "HomeLocation");
IEdmStructuralProperty streetProperty = _address.StructuralProperties().Single(c => c.Name == "Street");
ODataSelectPath selectPath = new ODataSelectPath(new PropertySegment(homeLocationProperty),
new PropertySegment(streetProperty));
PathSelectItem pathSelectItem = new PathSelectItem(selectPath);
NamedPropertyExpression namedProperty = binder.CreateNamedPropertyExpression(customer, _customer, pathSelectItem);
Assert.NotNull(namedProperty);
/*
* Assert.NotNull(namedProperty);
* Assert.Equal("\"VipAddress\"", namedProperty.Name.ToString());
*
* if (options != HandleNullPropagationOption.True)
* {
* Assert.Equal("(value(NS.Customer) As VipCustomer).VipAddress", namedProperty.Value.ToString());
* }
* else
* {
* Assert.Equal("IIF(((value(NS.Customer) As VipCustomer) == null)," +
* " null," +
* " (value(NS.Customer) As VipCustomer).VipAddress)", namedProperty.Value.ToString());
* }*/
}
public NHQueryHelper(bool enableConstantParameterization, bool ensureStableOrdering, HandleNullPropagationOption handleNullPropagation, int pageSize)
: base(enableConstantParameterization, ensureStableOrdering, handleNullPropagation, pageSize)
{
}
public static async Task <IQueryable <TModel> > GetQueryAsync <TModel, TData>(this IQueryable <TData> query, IMapper mapper, ODataQueryOptions <TModel> options, HandleNullPropagationOption handleNullPropagation = HandleNullPropagationOption.Default)
where TModel : class
{
ICollection <Expression <Func <IQueryable <TModel>, IIncludableQueryable <TModel, object> > > > includeExpressions = options.SelectExpand.GetIncludes().BuildIncludesExpressionCollection <TModel>()?.ToList();
Expression <Func <TModel, bool> > filter = options.Filter.ToFilterExpression <TModel>(handleNullPropagation);
Expression <Func <IQueryable <TModel>, IQueryable <TModel> > > queryableExpression = options.GetQueryableExpression();
Expression <Func <IQueryable <TModel>, long> > countExpression = LinqExtensions.GetCountExpression <TModel>(filter);
options.AddExpandOptionsResult();
if (options.Count?.Value == true)
{
options.AddCountOptionsResult <TModel, TData>(await query.QueryAsync(mapper, countExpression));
}
return(await query.GetQueryAsync(mapper, filter, queryableExpression, includeExpressions));
}
/// <summary>
/// Get
/// </summary>
/// <typeparam name="TModel"></typeparam>
/// <typeparam name="TData"></typeparam>
/// <param name="query"></param>
/// <param name="mapper"></param>
/// <param name="options"></param>
/// <returns></returns>
public static ICollection <TModel> Get <TModel, TData>(this IQueryable <TData> query, IMapper mapper, ODataQueryOptions <TModel> options, HandleNullPropagationOption handleNullPropagation = HandleNullPropagationOption.Default)
where TModel : class
=> Task.Run(async() => await query.GetAsync(mapper, options, handleNullPropagation)).Result;
/// <summary>
/// GetQueryAsync
/// </summary>
/// <typeparam name="TModel"></typeparam>
/// <typeparam name="TData"></typeparam>
/// <param name="query"></param>
/// <param name="mapper"></param>
/// <param name="options"></param>
/// <returns></returns>
public static async Task <IQueryable <TModel> > GetQueryAsync <TModel, TData>(this IQueryable <TData> query, IMapper mapper, ODataQueryOptions <TModel> options, HandleNullPropagationOption handleNullPropagation = HandleNullPropagationOption.Default)
where TModel : class
{
var expansions = options.SelectExpand.GetExpansions(typeof(TModel));
List <Expression <Func <TModel, object> > > includeExpressions = expansions.Select(list => new List <Expansion>(list)).BuildIncludes <TModel>
(
options.SelectExpand.GetSelects()
)
.ToList();
Expression <Func <TModel, bool> > filter = options.Filter.ToFilterExpression <TModel>(handleNullPropagation);
Expression <Func <IQueryable <TModel>, IQueryable <TModel> > > queryableExpression = options.GetQueryableExpression();
Expression <Func <IQueryable <TModel>, long> > countExpression = LinqExtensions.GetCountExpression <TModel>(filter);
options.AddExpandOptionsResult();
if (options.Count?.Value == true)
{
options.AddCountOptionsResult <TModel, TData>(await query.QueryAsync(mapper, countExpression));
}
IQueryable <TModel> queryable = await query.GetQueryAsync(mapper, filter, queryableExpression, includeExpressions);
return(queryable.UpdateQueryableExpression(expansions));
}