| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You 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. |
| |
| using System; |
| using System.Collections.Generic; |
| using System.Linq; |
| |
| namespace Apache.Arrow.Types |
| { |
| public sealed class StructType : NestedType |
| { |
| public override ArrowTypeId TypeId => ArrowTypeId.Struct; |
| public override string Name => "struct"; |
| |
| public StructType(IReadOnlyList<Field> fields) : base(fields) |
| { } |
| |
| public Field GetFieldByName(string name, |
| IEqualityComparer<string> comparer = default) |
| { |
| if (comparer == null) |
| comparer = StringComparer.Ordinal; |
| |
| return Fields.FirstOrDefault( |
| field => comparer.Equals(field.Name, name)); |
| } |
| |
| public int GetFieldIndex(string name, |
| IEqualityComparer<string> comparer = default) |
| { |
| if (comparer == null) |
| comparer = StringComparer.Ordinal; |
| |
| // TODO: Consider caching field index if this method is in hot path. |
| |
| for (int i = 0; i < Fields.Count; i++) |
| { |
| if (comparer.Equals(Fields[i].Name, name)) |
| { |
| return i; |
| } |
| } |
| |
| return -1; |
| } |
| |
| public override void Accept(IArrowTypeVisitor visitor) => Accept(this, visitor); |
| } |
| } |