public IQueryable ApplyTo(IQueryable queryable, ODataQuerySettings settings, AssembliesResolver assembliesResolver)
{
if (queryable == null)
{
throw Error.ArgumentNull("queryable");
}
if (settings == null)
{
throw Error.ArgumentNull("settings");
}
if (Context.ElementClrType == null)
{
throw Error.NotSupported(SRResources.ApplyToOnUntypedQueryOption, "ApplyTo");
}
// Ensure we have decided how to handle null propagation
ODataQuerySettings updatedSettings = settings;
if (settings.HandleNullPropagation == HandleNullPropagationOption.Default)
{
updatedSettings = new ODataQuerySettings(updatedSettings);
updatedSettings.HandleNullPropagation = HandleNullPropagationOptionHelper.GetDefaultHandleNullPropagationOption(queryable);
}
return(SelectExpandBinder.Bind(queryable, updatedSettings, assembliesResolver, this));
}
/// <summary>
/// Apply the apply query to the given IQueryable.
/// </summary>
/// <remarks>
/// The <see cref="ODataQuerySettings.HandleNullPropagation"/> property specifies
/// how this method should handle null propagation.
/// </remarks>
/// <param name="query">The original <see cref="IQueryable"/>.</param>
/// <param name="querySettings">The <see cref="ODataQuerySettings"/> that contains all the query application related settings.</param>
/// <param name="assemblyProvider">The <see cref="IAssemblyProvider"/> to use.</param>
/// <returns>The new <see cref="IQueryable"/> after the filter query has been applied to.</returns>
public IQueryable ApplyTo(IQueryable query, ODataQuerySettings querySettings, IAssemblyProvider assemblyProvider)
{
if (query == null)
{
throw Error.ArgumentNull("query");
}
if (querySettings == null)
{
throw Error.ArgumentNull("querySettings");
}
if (assemblyProvider == null)
{
throw Error.ArgumentNull("assemblyProvider");
}
if (Context.ElementClrType == null)
{
throw Error.NotSupported(SRResources.ApplyToOnUntypedQueryOption, "ApplyTo");
}
ApplyClause applyClause = ApplyClause;
Contract.Assert(applyClause != null);
// Ensure we have decided how to handle null propagation
ODataQuerySettings updatedSettings = querySettings;
if (querySettings.HandleNullPropagation == HandleNullPropagationOption.Default)
{
updatedSettings = new ODataQuerySettings(updatedSettings);
updatedSettings.HandleNullPropagation = HandleNullPropagationOptionHelper.GetDefaultHandleNullPropagationOption(query);
}
foreach (var transformation in applyClause.Transformations)
{
if (transformation.Kind == TransformationNodeKind.Aggregate || transformation.Kind == TransformationNodeKind.GroupBy)
{
var binder = new AggregationBinder(updatedSettings, assemblyProvider, ResultClrType, Context.Model, transformation as TransformationNode, _serviceProvider);
query = binder.Bind(query);
this.ResultClrType = binder.ResultClrType;
}
else if (transformation.Kind == TransformationNodeKind.Filter)
{
var filterTransformation = transformation as FilterTransformationNode;
Expression filter = FilterBinder.Bind(filterTransformation.FilterClause, ResultClrType, Context.Model, assemblyProvider, updatedSettings, _serviceProvider);
query = ExpressionHelpers.Where(query, filter, ResultClrType);
}
}
return(query);
}
public static ODataQuerySettings UpdateQuerySettings(this ODataQueryContext context, ODataQuerySettings querySettings, IQueryable query)
{
ODataQuerySettings updatedSettings = (context == null || context.RequestContainer == null)
? new ODataQuerySettings()
: context.RequestContainer.GetRequiredService <ODataQuerySettings>();
updatedSettings.CopyFrom(querySettings);
if (updatedSettings.HandleNullPropagation == HandleNullPropagationOption.Default)
{
updatedSettings.HandleNullPropagation = query != null
? HandleNullPropagationOptionHelper.GetDefaultHandleNullPropagationOption(query)
: HandleNullPropagationOption.True;
}
return(updatedSettings);
}
private IQueryable AddOrderByQueryForProperty(IQueryable query, ODataQuerySettings querySettings,
OrderByClause orderbyClause, IQueryable querySoFar, OrderByDirection direction, bool alreadyOrdered)
{
// Ensure we have decided how to handle null propagation
ODataQuerySettings updatedSettings = querySettings;
if (querySettings.HandleNullPropagation == HandleNullPropagationOption.Default)
{
updatedSettings = new ODataQuerySettings(updatedSettings);
updatedSettings.HandleNullPropagation =
HandleNullPropagationOptionHelper.GetDefaultHandleNullPropagationOption(query);
}
LambdaExpression orderByExpression =
FilterBinder.Bind(
orderbyClause, Context.ElementClrType, Context.Model, updatedSettings, Context.AssembliesResolver);
querySoFar = ExpressionHelpers.OrderBy(querySoFar, orderByExpression, direction, Context.ElementClrType,
alreadyOrdered);
return(querySoFar);
}
