--- /dev/null
+// 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
+{
+ /// <summary>
+ /// The <see cref="DateArrayBuilder{TUnderlying,TArray,TBuilder}"/> class is an abstract array builder that can
+ /// accept dates in the form of <see cref="DateTime"/> or <see cref="DateTimeOffset"/> and convert to some
+ /// underlying date representation.
+ /// </summary>
+ public abstract class DateArrayBuilder<TUnderlying, TArray, TBuilder> :
+ DelegatingArrayBuilder<TUnderlying, TArray, TBuilder>,
+ IArrowArrayBuilder<DateTime, TArray, TBuilder>,
+ IArrowArrayBuilder<DateTimeOffset, TArray, TBuilder>
+ where TArray : IArrowArray
+ where TBuilder : class, IArrowArrayBuilder<TArray>
+ {
+ /// <summary>
+ /// Construct a new instance of the <see cref="DateArrayBuilder{TUnderlying,TArray,TBuilder}"/> class.
+ /// </summary>
+ /// <param name="innerBuilder">Inner builder that will produce arrays of type <typeparamref name="TArray"/>.
+ /// </param>
+ protected DateArrayBuilder(IArrowArrayBuilder<TUnderlying, TArray, IArrowArrayBuilder<TArray>> innerBuilder)
+ : base(innerBuilder)
+ { }
+
+ /// <summary>
+ /// Append a date in the form of a <see cref="DateTime"/> object to the array.
+ /// </summary>
+ /// <remarks>
+ /// The value of <see cref="DateTime.Kind"/> on the input does not have any effect on the behaviour of this
+ /// method.
+ /// </remarks>
+ /// <param name="value">Date to add.</param>
+ /// <returns>Returns the builder (for fluent-style composition).</returns>
+ public TBuilder Append(DateTime value)
+ {
+ InnerBuilder.Append(Convert(value));
+ return this as TBuilder;
+ }
+
+ /// <summary>
+ /// Append a date from a <see cref="DateTimeOffset"/> object to the array.
+ /// </summary>
+ /// <remarks>
+ /// Note that to convert the supplied <paramref name="value"/> parameter to a date, it is first converted to
+ /// UTC and the date then taken from the UTC date/time. Depending on the value of its
+ /// <see cref="DateTimeOffset.Offset"/> property, this may not necessarily be the same as the date obtained by
+ /// calling its <see cref="DateTimeOffset.Date"/> property.
+ /// </remarks>
+ /// <param name="value">Date to add.</param>
+ /// <returns>Returns the builder (for fluent-style composition).</returns>
+ public TBuilder Append(DateTimeOffset value)
+ {
+ InnerBuilder.Append(Convert(value));
+ return this as TBuilder;
+ }
+
+ /// <summary>
+ /// Append a span of dates in the form of <see cref="DateTime"/> objects to the array.
+ /// </summary>
+ /// <remarks>
+ /// The value of <see cref="DateTime.Kind"/> on any of the inputs does not have any effect on the behaviour of
+ /// this method.
+ /// </remarks>
+ /// <param name="span">Span of dates to add.</param>
+ /// <returns>Returns the builder (for fluent-style composition).</returns>
+ public TBuilder Append(ReadOnlySpan<DateTime> span)
+ {
+ InnerBuilder.Reserve(span.Length);
+ foreach (var item in span)
+ {
+ InnerBuilder.Append(Convert(item));
+ }
+
+ return this as TBuilder;
+ }
+
+ /// <summary>
+ /// Append a span of dates in the form of <see cref="DateTimeOffset"/> objects to the array.
+ /// </summary>
+ /// <remarks>
+ /// Note that to convert the <see cref="DateTimeOffset"/> objects in the <paramref name="span"/> parameter to
+ /// dates, they are first converted to UTC and the date then taken from the UTC date/times. Depending on the
+ /// value of each <see cref="DateTimeOffset.Offset"/> property, this may not necessarily be the same as the
+ /// date obtained by calling the <see cref="DateTimeOffset.Date"/> property.
+ /// </remarks>
+ /// <param name="span">Span of dates to add.</param>
+ /// <returns>Returns the builder (for fluent-style composition).</returns>
+ public TBuilder Append(ReadOnlySpan<DateTimeOffset> span)
+ {
+ InnerBuilder.Reserve(span.Length);
+ foreach (var item in span)
+ {
+ InnerBuilder.Append(Convert(item));
+ }
+
+ return this as TBuilder;
+ }
+
+ /// <summary>
+ /// Append a null date to the array.
+ /// </summary>
+ /// <returns>Returns the builder (for fluent-style composition).</returns>
+ public TBuilder AppendNull()
+ {
+ InnerBuilder.AppendNull();
+ return this as TBuilder;
+ }
+
+ /// <summary>
+ /// Append a collection of dates in the form of <see cref="DateTime"/> objects to the array.
+ /// </summary>
+ /// <remarks>
+ /// The value of <see cref="DateTime.Kind"/> on any of the inputs does not have any effect on the behaviour of
+ /// this method.
+ /// </remarks>
+ /// <param name="values">Collection of dates to add.</param>
+ /// <returns>Returns the builder (for fluent-style composition).</returns>
+ public TBuilder AppendRange(IEnumerable<DateTime> values)
+ {
+ InnerBuilder.AppendRange(values.Select(Convert));
+ return this as TBuilder;
+ }
+
+ /// <summary>
+ /// Append a collection of dates in the form of <see cref="DateTimeOffset"/> objects to the array.
+ /// </summary>
+ /// <remarks>
+ /// Note that to convert the <see cref="DateTimeOffset"/> objects in the <paramref name="values"/> parameter to
+ /// dates, they are first converted to UTC and the date then taken from the UTC date/times. Depending on the
+ /// value of each <see cref="DateTimeOffset.Offset"/> property, this may not necessarily be the same as the
+ /// date obtained by calling the <see cref="DateTimeOffset.Date"/> property.
+ /// </remarks>
+ /// <param name="values">Collection of dates to add.</param>
+ /// <returns>Returns the builder (for fluent-style composition).</returns>
+ public TBuilder AppendRange(IEnumerable<DateTimeOffset> values)
+ {
+ InnerBuilder.AppendRange(values.Select(Convert));
+ return this as TBuilder;
+ }
+
+ /// <summary>
+ /// Set the value of a date in the form of a <see cref="DateTime"/> object at the specified index.
+ /// </summary>
+ /// <remarks>
+ /// The value of <see cref="DateTime.Kind"/> on the input does not have any effect on the behaviour of this
+ /// method.
+ /// </remarks>
+ /// <param name="index">Index at which to set value.</param>
+ /// <param name="value">Date to set.</param>
+ /// <returns>Returns the builder (for fluent-style composition).</returns>
+ public TBuilder Set(int index, DateTime value)
+ {
+ InnerBuilder.Set(index, Convert(value));
+ return this as TBuilder;
+ }
+
+ /// <summary>
+ /// Set the value of a date in the form of a <see cref="DateTimeOffset"/> object at the specified index.
+ /// </summary>
+ /// <remarks>
+ /// Note that to convert the supplied <paramref name="value"/> parameter to a date, it is first converted to
+ /// UTC and the date then taken from the UTC date/time. Depending on the value of its
+ /// <see cref="DateTimeOffset.Offset"/> property, this may not necessarily be the same as the date obtained by
+ /// calling its <see cref="DateTimeOffset.Date"/> property.
+ /// </remarks>
+ /// <param name="index">Index at which to set value.</param>
+ /// <param name="value">Date to set.</param>
+ /// <returns>Returns the builder (for fluent-style composition).</returns>
+ public TBuilder Set(int index, DateTimeOffset value)
+ {
+ InnerBuilder.Set(index, Convert(value));
+ return this as TBuilder;
+ }
+
+ /// <summary>
+ /// Swap the values of the dates at the specified indices.
+ /// </summary>
+ /// <param name="i">First index.</param>
+ /// <param name="j">Second index.</param>
+ /// <returns>Returns the builder (for fluent-style composition).</returns>
+ public TBuilder Swap(int i, int j)
+ {
+ InnerBuilder.Swap(i, j);
+ return this as TBuilder;
+ }
+
+ protected abstract TUnderlying Convert(DateTime dateTime);
+
+ protected abstract TUnderlying Convert(DateTimeOffset dateTimeOffset);
+ }
+}
projects / ceph.git / blobdiff