import quincy 17.2.0

[ceph.git] / ceph / src / arrow / csharp / src / Apache.Arrow / RecordBatch.cs

diff --git a/ceph/src/arrow/csharp/src/Apache.Arrow/RecordBatch.cs b/ceph/src/arrow/csharp/src/Apache.Arrow/RecordBatch.cs
new file mode 100644 (file)
index 0000000..6e97100
--- /dev/null
+++ b/ceph/src/arrow/csharp/src/Apache.Arrow/RecordBatch.cs
@@ -0,0 +1,90 @@
+// 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; }
+
+        internal IReadOnlyList<IArrowArray> ArrayList => _arrays;
+
+        private readonly IMemoryOwner<byte> _memoryOwner;
+        private readonly List<IArrowArray> _arrays;
+
+        public IArrowArray Column(int i)
+        {
+            return _arrays[i];
+        }
+
+        public IArrowArray Column(string columnName)
+        {
+            int 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;
+        }
+    }
+}