internal static async Task <ICollection <TModel> > GetAsync <TModel, TData>(this IStore store, IMapper mapper,
Expression <Func <TModel, bool> > filter = null,
Expression <Func <IQueryable <TModel>, IQueryable <TModel> > > queryFunc = null,
SelectExpandDefinition selectExpandDefinition = null)
where TModel : BaseModel
where TData : BaseData
{
return(mapper.ProjectTo
(
await store.GetQueryableAsync
(
Getfilter(),
GetQueryFunc()
),
null,
GetIncludes()
)
.UpdateQueryable(selectExpandDefinition.GetExpansions(typeof(TModel)), mapper)
.ToList());
Expression <Func <TModel, object> >[] GetIncludes()
=> selectExpandDefinition?.GetExpansionSelectors <TModel>().ToArray() ?? new Expression <Func <TModel, object> >[]
{
};
Func <IQueryable <TData>, IQueryable <TData> > GetQueryFunc()
=> mapper.MapExpression <Expression <Func <IQueryable <TData>, IQueryable <TData> > > >(queryFunc)?.Compile();
Expression <Func <TData, bool> > Getfilter()
=> mapper.MapExpression <Expression <Func <TData, bool> > >(filter);
}
internal static async Task <TReturn> QueryAsync <TModel, TData, TModelReturn, TDataReturn, TReturn>(this IStore store, IMapper mapper,
Expression <Func <IQueryable <TModel>, TModelReturn> > queryFunc = null,
ICollection <Expression <Func <IQueryable <TModel>, IIncludableQueryable <TModel, object> > > > includeProperties = null,
SelectExpandDefinition selectExpandDefinition = null)
where TModel : BaseModel
where TData : BaseData
{
//Map the expressions
Expression <Func <IQueryable <TData>, TDataReturn> > mappedQueryFunc = mapper.MapExpression <Expression <Func <IQueryable <TData>, TDataReturn> > >(queryFunc);
ICollection <Expression <Func <IQueryable <TData>, IIncludableQueryable <TData, object> > > > includes = mapper.MapIncludesList <Expression <Func <IQueryable <TData>, IIncludableQueryable <TData, object> > > >(includeProperties);
//Call the store
TDataReturn result = await store.QueryAsync(mappedQueryFunc?.Compile(),
includes?.Select(i => i.Compile()).ToList());
if (typeof(TReturn) == typeof(TDataReturn))
{
return((TReturn)(object)result);
}
if (typeof(TReturn).IsIQueryable() && typeof(TDataReturn).IsIQueryable())
{
return(GetProjection(typeof(TReturn).GetUnderlyingElementType()));
}
return(mapper.Map <TDataReturn, TReturn>(result));
TReturn GetProjection(Type elementType)
=> (TReturn)mapper.ProjectTo
(
(IQueryable)result,
elementType,
selectExpandDefinition
)
.UpdateQueryable(elementType, selectExpandDefinition.GetExpansions(elementType), mapper);
}