/// <summary>
/// Apply the $skiptoken query to the given IQueryable.
/// </summary>
/// <param name="query">The original <see cref="IQueryable"/>.</param>
/// <param name="skipTokenQueryOption">The skiptoken query option which needs to be applied to this query option.</param>
/// <returns>The new <see cref="IQueryable"/> after the skiptoken query has been applied to.</returns>
public override IQueryable ApplyTo(IQueryable query, SkipTokenQueryOption skipTokenQueryOption)
{
if (skipTokenQueryOption == null)
{
throw Error.ArgumentNullOrEmpty("skipTokenQueryOption");
}
ODataQuerySettings querySettings = skipTokenQueryOption.QuerySettings;
IODataQueryOptions queryOptions = skipTokenQueryOption.QueryOptions;
IList <OrderByNode> orderByNodes = null;
if (queryOptions != null)
{
OrderByQueryOption orderBy = queryOptions.GenerateStableOrder();
if (orderBy != null)
{
orderByNodes = orderBy.OrderByNodes;
}
}
return(ApplyToCore(query, querySettings, orderByNodes, skipTokenQueryOption.Context, skipTokenQueryOption.RawValue));
}
private void BuildQueryOptions(IDictionary <string, string> queryParameters)
{
foreach (KeyValuePair <string, string> kvp in queryParameters)
{
switch (kvp.Key.ToLowerInvariant())
{
case "$filter":
ThrowIfEmpty(kvp.Value, "$filter");
RawValues.Filter = kvp.Value;
Filter = new FilterQueryOption(kvp.Value, Context, _queryOptionParser);
break;
case "$orderby":
ThrowIfEmpty(kvp.Value, "$orderby");
RawValues.OrderBy = kvp.Value;
OrderBy = new OrderByQueryOption(kvp.Value, Context, _queryOptionParser);
break;
case "$top":
ThrowIfEmpty(kvp.Value, "$top");
RawValues.Top = kvp.Value;
Top = new TopQueryOption(kvp.Value, Context, _queryOptionParser);
break;
case "$skip":
ThrowIfEmpty(kvp.Value, "$skip");
RawValues.Skip = kvp.Value;
Skip = new SkipQueryOption(kvp.Value, Context, _queryOptionParser);
break;
case "$select":
RawValues.Select = kvp.Value;
break;
case "$count":
ThrowIfEmpty(kvp.Value, "$count");
RawValues.Count = kvp.Value;
Count = new CountQueryOption(kvp.Value, Context, _queryOptionParser);
break;
case "$expand":
RawValues.Expand = kvp.Value;
break;
case "$format":
RawValues.Format = kvp.Value;
break;
case "$skiptoken":
RawValues.SkipToken = kvp.Value;
SkipToken = new SkipTokenQueryOption(kvp.Value, Context, _queryOptionParser);
break;
case "$deltatoken":
RawValues.DeltaToken = kvp.Value;
break;
case "$apply":
ThrowIfEmpty(kvp.Value, "$apply");
RawValues.Apply = kvp.Value;
Apply = new ApplyQueryOption(kvp.Value, Context, _queryOptionParser);
break;
case "$compute":
ThrowIfEmpty(kvp.Value, "$compute");
RawValues.Compute = kvp.Value;
Compute = new ComputeQueryOption(kvp.Value, Context, _queryOptionParser);
break;
default:
// we don't throw if we can't recognize the query
break;
}
}
if (RawValues.Select != null || RawValues.Expand != null)
{
SelectExpand = new SelectExpandQueryOption(RawValues.Select, RawValues.Expand,
Context, _queryOptionParser);
}
if (InternalRequest.IsCountRequest())
{
Count = new CountQueryOption(
"true",
Context,
new ODataQueryOptionParser(
Context.Model,
Context.ElementType,
Context.NavigationSource,
new Dictionary <string, string> {
{ "$count", "true" }
},
Context.RequestContainer));
}
}
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);
}
