public CosmosLinqQuery(
ContainerCore container,
CosmosResponseFactory responseFactory,
CosmosQueryClientCore queryClient,
string continuationToken,
QueryRequestOptions cosmosQueryRequestOptions,
Expression expression,
bool allowSynchronousQueryExecution,
CosmosSerializationOptions serializationOptions = null)
{
this.container = container ?? throw new ArgumentNullException(nameof(container));
this.responseFactory = responseFactory ?? throw new ArgumentNullException(nameof(responseFactory));
this.queryClient = queryClient ?? throw new ArgumentNullException(nameof(queryClient));
this.continuationToken = continuationToken;
this.cosmosQueryRequestOptions = cosmosQueryRequestOptions;
this.Expression = expression ?? Expression.Constant(this);
this.allowSynchronousQueryExecution = allowSynchronousQueryExecution;
this.correlatedActivityId = Guid.NewGuid();
this.serializationOptions = serializationOptions;
this.queryProvider = new CosmosLinqQueryProvider(
container,
responseFactory,
queryClient,
this.continuationToken,
cosmosQueryRequestOptions,
this.allowSynchronousQueryExecution,
this.queryClient.OnExecuteScalarQueryCallback,
this.serializationOptions);
}
/// <summary>
/// Returns the number of elements in a sequence.
/// </summary>
/// <typeparam name="TSource">The type of the elements of source.</typeparam>
/// <param name="source">The sequence that contains the elements to be counted.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>The number of elements in the input sequence.</returns>
public static Task <Response <int> > CountAsync <TSource>(
this IQueryable <TSource> source,
CancellationToken cancellationToken = default(CancellationToken))
{
CosmosLinqQueryProvider cosmosLinqQueryProvider = source.Provider as CosmosLinqQueryProvider;
if (cosmosLinqQueryProvider == null)
{
return(ResponseHelperAsync(source.Count()));
}
return(cosmosLinqQueryProvider.ExecuteAggregateAsync <int>(
Expression.Call(
GetMethodInfoOf <IQueryable <TSource>, int>(Queryable.Count),
source.Expression),
cancellationToken));
}
/// <summary>
/// Computes the sum of a sequence of <see cref="Nullable{Int64}" /> values.
/// </summary>
/// <param name="source">A sequence of values to calculate the average of.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>The average value in the sequence.</returns>
public static Task <Response <long?> > SumAsync(
this IQueryable <long?> source,
CancellationToken cancellationToken = default(CancellationToken))
{
CosmosLinqQueryProvider cosmosLinqQueryProvider = source.Provider as CosmosLinqQueryProvider;
if (cosmosLinqQueryProvider == null)
{
return(ResponseHelperAsync(source.Sum()));
}
return(cosmosLinqQueryProvider.ExecuteAggregateAsync <long?>(
Expression.Call(
GetMethodInfoOf <IQueryable <long?>, long?>(Queryable.Sum),
source.Expression),
cancellationToken));
}
/// <summary>
/// Computes the sum of a sequence of <see cref="Nullable{Int32}" /> values.
/// </summary>
/// <param name="source">A sequence of values to calculate the average of.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>The average value in the sequence.</returns>
public static Task <int?> SumAsync(
this IQueryable <int?> source,
CancellationToken cancellationToken = default(CancellationToken))
{
CosmosLinqQueryProvider cosmosLinqQueryProvider = source.Provider as CosmosLinqQueryProvider;
if (cosmosLinqQueryProvider == null)
{
return(Task.FromResult(source.Sum()));
}
return(((CosmosLinqQueryProvider)source.Provider).ExecuteAggregateAsync <int?>(
Expression.Call(
GetMethodInfoOf <IQueryable <int?>, int?>(Queryable.Sum),
source.Expression),
cancellationToken));
}
/// <summary>
/// Computes the average of a sequence of <see cref="Nullable{Int64}" /> values.
/// </summary>
/// <param name="source">A sequence of values to calculate the average of.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>The average value in the sequence.</returns>
public static Task <double?> AverageAsync(
this IQueryable <long?> source,
CancellationToken cancellationToken = default(CancellationToken))
{
CosmosLinqQueryProvider cosmosLinqQueryProvider = source.Provider as CosmosLinqQueryProvider;
if (cosmosLinqQueryProvider == null)
{
return(Task.FromResult(source.Average()));
}
return(cosmosLinqQueryProvider.ExecuteAggregateAsync <double?>(
Expression.Call(
GetMethodInfoOf <IQueryable <long?>, double?>(Queryable.Average),
source.Expression),
cancellationToken));
}
/// <summary>
/// Returns the minimum value in a generic <see cref="IQueryable{TSource}" />.
/// </summary>
/// <typeparam name="TSource">The type of the elements of source.</typeparam>
/// <param name="source">A sequence of values to determine the minimum of.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>The minimum value in the sequence.</returns>
public static Task <TSource> MinAsync <TSource>(
this IQueryable <TSource> source,
CancellationToken cancellationToken = default(CancellationToken))
{
CosmosLinqQueryProvider cosmosLinqQueryProvider = source.Provider as CosmosLinqQueryProvider;
if (cosmosLinqQueryProvider == null)
{
return(Task.FromResult(source.Min()));
}
return(cosmosLinqQueryProvider.ExecuteAggregateAsync <TSource>(
Expression.Call(
GetMethodInfoOf <IQueryable <TSource>, TSource>(Queryable.Min),
source.Expression),
cancellationToken));
}
public CosmosLinqQuery(
CosmosContainerCore container,
CosmosJsonSerializer cosmosJsonSerializer,
CosmosQueryClient queryClient,
QueryRequestOptions cosmosQueryRequestOptions,
Expression expression,
bool allowSynchronousQueryExecution)
{
this.container = container ?? throw new ArgumentNullException(nameof(container));
this.cosmosJsonSerializer = cosmosJsonSerializer;
this.queryClient = queryClient;
this.cosmosQueryRequestOptions = cosmosQueryRequestOptions;
this.expression = expression ?? Expression.Constant(this);
this.allowSynchronousQueryExecution = allowSynchronousQueryExecution;
this.queryProvider = new CosmosLinqQueryProvider(
container,
cosmosJsonSerializer,
queryClient,
cosmosQueryRequestOptions,
this.allowSynchronousQueryExecution);
this.correlatedActivityId = Guid.NewGuid();
}
