internal async Task <IEnumerable <Document> > GetDocumentsAsync <T>(List <KeyValuePair <string, object> > filterNameValues, string partitionKey, CancellationToken cancellationToken, bool appendSystemDataFilter = true)
{
EnsureArg.IsNotNull(partitionKey, nameof(partitionKey));
var queryBuilder = new StringBuilder();
var queryParameterManager = new QueryParameterManager();
var queryHelper = new QueryHelper(queryBuilder, queryParameterManager, "r");
queryHelper.AppendSelectFromRoot("r");
string filterCondition = "WHERE";
if (appendSystemDataFilter)
{
queryHelper.AppendSystemDataFilter(true);
filterCondition = "AND";
}
if (filterNameValues != null)
{
queryHelper.AppendFilterCondition(filterCondition, filterNameValues.Select(kvp => (kvp.Key, kvp.Value)).ToArray());
}
var documentQuery = new SqlQuerySpec(
queryBuilder.ToString(),
queryParameterManager.ToSqlParameterCollection());
var feedOptions = new FeedOptions
{
PartitionKey = new PartitionKey(partitionKey),
};
IDocumentQuery <T> cosmosDocumentQuery =
CreateDocumentQuery <T>(documentQuery, feedOptions);
using (cosmosDocumentQuery)
{
var retDocuments = new List <Document>();
while (cosmosDocumentQuery.HasMoreResults)
{
retDocuments.AddRange(await cosmosDocumentQuery.ExecuteNextAsync <Document>(cancellationToken));
}
return(retDocuments);
}
}