/// <summary>
/// Used in the compute gateway to support legacy gateway interface.
/// </summary>
public override async Task <TryExecuteQueryResult> TryExecuteQueryAsync(
QueryFeatures supportedQueryFeatures,
QueryDefinition queryDefinition,
string continuationToken,
FeedRangeInternal feedRangeInternal,
QueryRequestOptions requestOptions,
CancellationToken cancellationToken = default(CancellationToken))
{
if (queryDefinition == null)
{
throw new ArgumentNullException(nameof(queryDefinition));
}
if (requestOptions == null)
{
throw new ArgumentNullException(nameof(requestOptions));
}
if (feedRangeInternal != null)
{
// The user has scoped down to a physical partition or logical partition.
// In either case let the query execute as a passthrough.
QueryIterator passthroughQueryIterator = QueryIterator.Create(
client: this.queryClient,
clientContext: this.ClientContext,
sqlQuerySpec: queryDefinition.ToSqlQuerySpec(),
continuationToken: continuationToken,
feedRangeInternal: feedRangeInternal,
queryRequestOptions: requestOptions,
resourceLink: this.LinkUri,
isContinuationExpected: false,
allowNonValueAggregateQuery: true,
forcePassthrough: true, // Forcing a passthrough, since we don't want to get the query plan nor try to rewrite it.
partitionedQueryExecutionInfo: null);
return(new QueryPlanIsSupportedResult(passthroughQueryIterator));
}
cancellationToken.ThrowIfCancellationRequested();
Documents.PartitionKeyDefinition partitionKeyDefinition;
if (requestOptions.Properties != null &&
requestOptions.Properties.TryGetValue("x-ms-query-partitionkey-definition", out object partitionKeyDefinitionObject))
{
if (partitionKeyDefinitionObject is Documents.PartitionKeyDefinition definition)
{
partitionKeyDefinition = definition;
}
else
{
throw new ArgumentException(
"partitionkeydefinition has invalid type",
nameof(partitionKeyDefinitionObject));
}
}
else
{
ContainerQueryProperties containerQueryProperties = await this.queryClient.GetCachedContainerQueryPropertiesAsync(
this.LinkUri,
requestOptions.PartitionKey,
cancellationToken);
partitionKeyDefinition = containerQueryProperties.PartitionKeyDefinition;
}
QueryPlanHandler queryPlanHandler = new QueryPlanHandler(this.queryClient);
TryCatch <(PartitionedQueryExecutionInfo queryPlan, bool supported)> tryGetQueryInfoAndIfSupported = await queryPlanHandler.TryGetQueryInfoAndIfSupportedAsync(
supportedQueryFeatures,
queryDefinition.ToSqlQuerySpec(),
partitionKeyDefinition,
requestOptions.PartitionKey.HasValue,
cancellationToken);
if (tryGetQueryInfoAndIfSupported.Failed)
{
return(new FailedToGetQueryPlanResult(tryGetQueryInfoAndIfSupported.Exception));
}
(PartitionedQueryExecutionInfo queryPlan, bool supported) = tryGetQueryInfoAndIfSupported.Result;
TryExecuteQueryResult tryExecuteQueryResult;
if (supported)
{
QueryIterator queryIterator = QueryIterator.Create(
client: this.queryClient,
clientContext: this.ClientContext,
sqlQuerySpec: queryDefinition.ToSqlQuerySpec(),
continuationToken: continuationToken,
feedRangeInternal: feedRangeInternal,
queryRequestOptions: requestOptions,
resourceLink: this.LinkUri,
isContinuationExpected: false,
allowNonValueAggregateQuery: true,
forcePassthrough: false,
partitionedQueryExecutionInfo: queryPlan);
tryExecuteQueryResult = new QueryPlanIsSupportedResult(queryIterator);
}
else
{
tryExecuteQueryResult = new QueryPlanNotSupportedResult(queryPlan);
}
return(tryExecuteQueryResult);
}
/// <summary>
/// Used in the compute gateway to support legacy gateway interface.
/// </summary>
internal async Task <((Exception, PartitionedQueryExecutionInfo), (bool, QueryIterator))> TryExecuteQueryAsync(
QueryFeatures supportedQueryFeatures,
QueryDefinition queryDefinition,
string continuationToken,
QueryRequestOptions requestOptions,
CancellationToken cancellationToken = default(CancellationToken))
{
if (queryDefinition == null)
{
throw new ArgumentNullException(nameof(queryDefinition));
}
if (requestOptions == null)
{
throw new ArgumentNullException(nameof(requestOptions));
}
cancellationToken.ThrowIfCancellationRequested();
Documents.PartitionKeyDefinition partitionKeyDefinition;
if (requestOptions.Properties != null &&
requestOptions.Properties.TryGetValue("x-ms-query-partitionkey-definition", out object partitionKeyDefinitionObject))
{
if (partitionKeyDefinitionObject is Documents.PartitionKeyDefinition definition)
{
partitionKeyDefinition = definition;
}
else
{
throw new ArgumentException(
"partitionkeydefinition has invalid type",
nameof(partitionKeyDefinitionObject));
}
}
else
{
ContainerQueryProperties containerQueryProperties = await this.queryClient.GetCachedContainerQueryPropertiesAsync(
this.LinkUri,
requestOptions.PartitionKey,
cancellationToken);
partitionKeyDefinition = containerQueryProperties.PartitionKeyDefinition;
}
QueryPlanHandler queryPlanHandler = new QueryPlanHandler(this.queryClient);
((Exception exception, PartitionedQueryExecutionInfo partitionedQueryExecutionInfo), bool supported) = await queryPlanHandler.TryGetQueryInfoAndIfSupportedAsync(
supportedQueryFeatures,
queryDefinition.ToSqlQuerySpec(),
partitionKeyDefinition,
requestOptions.PartitionKey.HasValue,
cancellationToken);
if (exception != null)
{
return((exception, null), (false, null));
}
QueryIterator queryIterator;
if (supported)
{
queryIterator = QueryIterator.Create(
client: this.queryClient,
clientContext: this.ClientContext,
sqlQuerySpec: queryDefinition.ToSqlQuerySpec(),
continuationToken: continuationToken,
queryRequestOptions: requestOptions,
resourceLink: this.LinkUri,
isContinuationExpected: false,
allowNonValueAggregateQuery: true,
partitionedQueryExecutionInfo: partitionedQueryExecutionInfo);
}
else
{
queryIterator = null;
}
return((null, partitionedQueryExecutionInfo), (supported, queryIterator));
}