public virtual IQueryable ApplyTo(IQueryable query, ODataQuerySettings querySettings) { if (query == null) { throw Error.ArgumentNull("query"); } if (querySettings == null) { throw Error.ArgumentNull("querySettings"); } IQueryable result = query; // First apply $apply // Section 3.15 of the spec http://docs.oasis-open.org/odata/odata-data-aggregation-ext/v4.0/cs01/odata-data-aggregation-ext-v4.0-cs01.html#_Toc378326311 if (IsAvailableODataQueryOption(Apply, AllowedQueryOptions.Apply)) { result = Apply.ApplyTo(result, querySettings); InternalRequest.Context.ApplyClause = Apply.ApplyClause; if (Apply.SelectExpandClause != null) { // In case of just expand in $apply falling back to $expand serialization InternalRequest.Context.ProcessedSelectExpandClause = Apply.SelectExpandClause; } this.Context.ElementClrType = Apply.ResultClrType; } // Apply compute // It should be executed before $filter, because it defines computed properties that can be used in a $select or within a $filter or $orderby expression. if (IsAvailableODataQueryOption(Compute, AllowedQueryOptions.Compute)) { result = Compute.ApplyTo(result, querySettings); } // Construct the actual query and apply them in the following order: filter, orderby, skip, top if (IsAvailableODataQueryOption(Filter, AllowedQueryOptions.Filter)) { result = Filter.ApplyTo(result, querySettings); } if (IsAvailableODataQueryOption(Count, AllowedQueryOptions.Count)) { if (InternalRequest.Context.TotalCountFunc == null) { Func <long> countFunc = Count.GetEntityCountFunc(result); if (countFunc != null) { InternalRequest.Context.TotalCountFunc = countFunc; } } if (InternalRequest.IsCountRequest()) { return(result); } } OrderByQueryOption orderBy = OrderBy; // $skip or $top require a stable sort for predictable results. // Result limits require a stable sort to be able to generate a next page link. // If either is present in the query and we have permission, // generate an $orderby that will produce a stable sort. if (querySettings.EnsureStableOrdering && (IsAvailableODataQueryOption(Skip, AllowedQueryOptions.Skip) || IsAvailableODataQueryOption(Top, AllowedQueryOptions.Top) || querySettings.PageSize.HasValue)) { // If there is no OrderBy present, we manufacture a default. // If an OrderBy is already present, we add any missing // properties necessary to make a stable sort. // Instead of failing early here if we cannot generate the OrderBy, // let the IQueryable backend fail (if it has to). orderBy = GenerateStableOrder(); } if (IsAvailableODataQueryOption(orderBy, AllowedQueryOptions.OrderBy)) { result = orderBy.ApplyTo(result, querySettings); } if (IsAvailableODataQueryOption(SkipToken, AllowedQueryOptions.SkipToken)) { result = SkipToken.ApplyTo(result, querySettings, this); } if (!IsAggregated(Apply?.ApplyClause)) { AddAutoSelectExpandProperties(); } if (SelectExpand != null) { var tempResult = ApplySelectExpand(result, querySettings); if (tempResult != default(IQueryable)) { result = tempResult; } } if (IsAvailableODataQueryOption(Skip, AllowedQueryOptions.Skip)) { result = Skip.ApplyTo(result, querySettings); } if (IsAvailableODataQueryOption(Top, AllowedQueryOptions.Top)) { result = Top.ApplyTo(result, querySettings); } result = ApplyPaging(result, querySettings); return(result); }
public virtual IQueryable ApplyTo(IQueryable query, ODataQuerySettings querySettings) { if (query == null) { throw Error.ArgumentNull("query"); } if (querySettings == null) { throw Error.ArgumentNull("querySettings"); } IQueryable result = query; // First apply $apply // Section 3.15 of the spec http://docs.oasis-open.org/odata/odata-data-aggregation-ext/v4.0/cs01/odata-data-aggregation-ext-v4.0-cs01.html#_Toc378326311 ApplyClause apply = null; if (IsAvailableODataQueryOption(Apply, AllowedQueryOptions.Apply)) { result = Apply.ApplyTo(result, querySettings); InternalRequest.Context.ApplyClause = Apply.ApplyClause; this.Context.ElementClrType = Apply.ResultClrType; apply = Apply.ApplyClause; } // Construct the actual query and apply them in the following order: filter, orderby, skip, top if (IsAvailableODataQueryOption(Filter, AllowedQueryOptions.Filter)) { result = Filter.ApplyTo(result, querySettings); } if (IsAvailableODataQueryOption(Count, AllowedQueryOptions.Count)) { if (InternalRequest.Context.TotalCountFunc == null) { Func <long> countFunc = Count.GetEntityCountFunc(result); if (countFunc != null) { InternalRequest.Context.TotalCountFunc = countFunc; } } if (InternalRequest.IsCountRequest()) { return(result); } } OrderByQueryOption orderBy = OrderBy; // $skip or $top require a stable sort for predictable results. // Result limits require a stable sort to be able to generate a next page link. // If either is present in the query and we have permission, // generate an $orderby that will produce a stable sort. if (querySettings.EnsureStableOrdering && (IsAvailableODataQueryOption(Skip, AllowedQueryOptions.Skip) || IsAvailableODataQueryOption(Top, AllowedQueryOptions.Top) || querySettings.PageSize.HasValue)) { // If there is no OrderBy present, we manufacture a default. // If an OrderBy is already present, we add any missing // properties necessary to make a stable sort. // Instead of failing early here if we cannot generate the OrderBy, // let the IQueryable backend fail (if it has to). List <string> applySortOptions = GetApplySortOptions(apply); orderBy = orderBy == null ? GenerateDefaultOrderBy(Context, applySortOptions) : EnsureStableSortOrderBy(orderBy, Context, applySortOptions); } if (IsAvailableODataQueryOption(orderBy, AllowedQueryOptions.OrderBy)) { result = orderBy.ApplyTo(result, querySettings); } if (IsAvailableODataQueryOption(Skip, AllowedQueryOptions.Skip)) { result = Skip.ApplyTo(result, querySettings); } if (IsAvailableODataQueryOption(Top, AllowedQueryOptions.Top)) { result = Top.ApplyTo(result, querySettings); } AddAutoSelectExpandProperties(); if (SelectExpand != null) { var tempResult = ApplySelectExpand(result, querySettings); if (tempResult != default(IQueryable)) { result = tempResult; } } int pageSize = -1; if (querySettings.PageSize.HasValue) { pageSize = querySettings.PageSize.Value; } else if (querySettings.ModelBoundPageSize.HasValue) { pageSize = querySettings.ModelBoundPageSize.Value; } if (pageSize > 0) { bool resultsLimited; result = LimitResults(result, pageSize, out resultsLimited); if (resultsLimited && InternalRequest.RequestUri != null && InternalRequest.RequestUri.IsAbsoluteUri && InternalRequest.Context.NextLink == null) { Uri nextPageLink = InternalRequest.GetNextPageLink(pageSize); InternalRequest.Context.NextLink = nextPageLink; } } return(result); }