Alexander Shabarshov 2a7a24c9e7 Initial contribution
2025-11-03 14:43:26 +00:00

70 lines
2.1 KiB
C#

/*
* dbMango
*
* Copyright 2025 Deutsche Bank AG
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace Rms.Risk.Mango.Language.Ast;
public class AstStageUnwind : AstStage
{
public AstStageUnwind() {}
public AstStageUnwind(string fieldName, string? indexName = null)
{
Name = fieldName;
Index = indexName!;
}
public string Name { get; internal set { field = PreprocessFieldName(value); }} = "";
public string? Index { get; internal set { field = PreprocessFieldName(value); }}
public override void Append(StringBuilder sb, int indent)
{
if (string.IsNullOrWhiteSpace(Index))
sb.AppendLine($"{Spaces(indent)}UNWIND {Name}");
else
sb.AppendLine($"{Spaces(indent)}UNWIND {Name} INDEX {Index}");
}
public override JsonNode? AsJson()
{
if ( string.IsNullOrWhiteSpace(Index) )
{
var res = new JsonObject
{{
"$unwind",
new JsonObject
{
{ "path", JsonValue.Create($"${Name}") }
}
}};
return ApplyOptions(res);
}
else
{
var res = new JsonObject
{{
"$unwind",
new JsonObject
{
{ "path", JsonValue.Create($"${Name}") },
{ "includeArrayIndex", JsonValue.Create(Index) }
}
}};
return ApplyOptions(res);
}
}
}