| // 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.Buffers; |
| using System.Collections.Generic; |
| using System.Diagnostics; |
| using System.Linq; |
| |
| namespace Apache.Arrow |
| { |
| public partial class RecordBatch : IDisposable |
| { |
| public Schema Schema { get; } |
| public int ColumnCount => _arrays.Count; |
| public IEnumerable<IArrowArray> Arrays => _arrays; |
| public int Length { get; } |
| |
| private readonly IMemoryOwner<byte> _memoryOwner; |
| private readonly IList<IArrowArray> _arrays; |
| |
| public IArrowArray Column(int i) |
| { |
| return _arrays[i]; |
| } |
| |
| public IArrowArray Column(string columnName) |
| { |
| var fieldIndex = Schema.GetFieldIndex(columnName); |
| return _arrays[fieldIndex]; |
| } |
| |
| public void Dispose() |
| { |
| Dispose(disposing: true); |
| } |
| |
| protected virtual void Dispose(bool disposing) |
| { |
| if (disposing) |
| { |
| _memoryOwner?.Dispose(); |
| |
| foreach (IArrowArray array in _arrays) |
| { |
| array.Dispose(); |
| } |
| } |
| } |
| |
| public RecordBatch(Schema schema, IEnumerable<IArrowArray> data, int length) |
| { |
| if (length < 0) |
| { |
| throw new ArgumentOutOfRangeException(nameof(length)); |
| } |
| |
| _arrays = data?.ToList() ?? throw new ArgumentNullException(nameof(data)); |
| |
| Schema = schema ?? throw new ArgumentNullException(nameof(schema)); |
| Length = length; |
| } |
| |
| internal RecordBatch(Schema schema, IMemoryOwner<byte> memoryOwner, List<IArrowArray> arrays, int length) |
| { |
| Debug.Assert(schema != null); |
| Debug.Assert(arrays != null); |
| Debug.Assert(length >= 0); |
| |
| _memoryOwner = memoryOwner; |
| _arrays = arrays; |
| Schema = schema; |
| Length = length; |
| } |
| } |
| } |