| | | 1 | | /* |
| | | 2 | | * Copyright 2017 Stanislav Muhametsin. All rights Reserved. |
| | | 3 | | * |
| | | 4 | | * Licensed under the Apache License, Version 2.0 (the "License"); |
| | | 5 | | * you may not use this file except in compliance with the License. |
| | | 6 | | * You may obtain a copy of the License at |
| | | 7 | | * |
| | | 8 | | * http://www.apache.org/licenses/LICENSE-2.0 |
| | | 9 | | * |
| | | 10 | | * Unless required by applicable law or agreed to in writing, software |
| | | 11 | | * distributed under the License is distributed on an "AS IS" BASIS, |
| | | 12 | | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| | | 13 | | * implied. |
| | | 14 | | * |
| | | 15 | | * See the License for the specific language governing permissions and |
| | | 16 | | * limitations under the License. |
| | | 17 | | */ |
| | | 18 | | using System; |
| | | 19 | | using System.Threading.Tasks; |
| | | 20 | | using UtilPack; |
| | | 21 | | using UtilPack.TabularData; |
| | | 22 | | |
| | | 23 | | namespace CBAM.Abstractions.Implementation.Tabular |
| | | 24 | | { |
| | | 25 | | /// <summary> |
| | | 26 | | /// This class extends <see cref="DataColumnSUKS"/> to use <see cref="ConnectionFunctionalitySU"/> to reserve it when |
| | | 27 | | /// </summary> |
| | | 28 | | /// <typeparam name="TConnectionFunctionality">The real type of <see cref="ConnectionFunctionalitySU"/>.</typeparam> |
| | | 29 | | /// <seealso cref="ConnectionFunctionalitySU.UseStreamWithinStatementAsync(ReservedForStatement, Func{Task}, Boolean) |
| | | 30 | | /// <seealso cref="ConnectionFunctionalitySU.UseStreamWithinStatementAsync{T}(ReservedForStatement, Func{ValueTask{T} |
| | | 31 | | public abstract class DataColumnSUKSWithConnectionFunctionality<TConnectionFunctionality> : DataColumnSUKS |
| | | 32 | | where TConnectionFunctionality : class, ConnectionFunctionalitySU |
| | | 33 | | { |
| | | 34 | | |
| | | 35 | | /// <summary> |
| | | 36 | | /// Creates new instance of <see cref="DataColumnSUKSWithConnectionFunctionality{TConnectionFunctionality}"/> with |
| | | 37 | | /// </summary> |
| | | 38 | | /// <param name="metadata">The <see cref="DataColumnMetaData"/> of this data column.</param> |
| | | 39 | | /// <param name="columnIndex">The index of this column within the <see cref="AsyncDataRow"/>.</param> |
| | | 40 | | /// <param name="previousColumn">The column at previous index within the <see cref="AsyncDataRow"/>.</param> |
| | | 41 | | /// <param name="connectionFunctionality">The <see cref="ConnectionFunctionalitySU{TStatement, TStatementInformati |
| | | 42 | | /// <param name="reservedForStatement">The <see cref="Implementation.ReservedForStatement"/> object that is used i |
| | | 43 | | /// <exception cref="ArgumentNullException">If any of <paramref name="metadata"/>, <paramref name="connectionFunct |
| | | 44 | | public DataColumnSUKSWithConnectionFunctionality( |
| | | 45 | | DataColumnMetaData metadata, |
| | | 46 | | Int32 columnIndex, |
| | | 47 | | AsyncDataColumn previousColumn, |
| | | 48 | | TConnectionFunctionality connectionFunctionality, |
| | | 49 | | ReservedForStatement reservedForStatement |
| | 106 | 50 | | ) : base( metadata, columnIndex, previousColumn ) |
| | | 51 | | { |
| | 106 | 52 | | this.ConnectionFunctionality = ArgumentValidator.ValidateNotNull( nameof( connectionFunctionality ), connection |
| | 106 | 53 | | this.ReservedForStatement = ArgumentValidator.ValidateNotNull( nameof( reservedForStatement ), reservedForState |
| | 107 | 54 | | } |
| | | 55 | | |
| | | 56 | | /// <summary> |
| | | 57 | | /// Gets the <see cref="ConnectionFunctionalitySU{TStatement, TStatementInformation, TStatementCreationArgs, TEnum |
| | | 58 | | /// </summary> |
| | | 59 | | /// <value>The <see cref="ConnectionFunctionalitySU{TStatement, TStatementInformation, TStatementCreationArgs, TEn |
| | 2005 | 60 | | protected TConnectionFunctionality ConnectionFunctionality { get; } |
| | | 61 | | |
| | | 62 | | /// <summary> |
| | | 63 | | /// Gets the <see cref="Implementation.ReservedForStatement"/> object of this data column. |
| | | 64 | | /// </summary> |
| | | 65 | | /// <value>The <see cref="Implementation.ReservedForStatement"/> object of this data column.</value> |
| | 663 | 66 | | protected ReservedForStatement ReservedForStatement { get; } |
| | | 67 | | |
| | | 68 | | /// <summary> |
| | | 69 | | /// Implements <see cref="DataColumnSUKS.ReadValueAsync(int)"/> and will call <see cref="ReadValueWhileReservedAsy |
| | | 70 | | /// </summary> |
| | | 71 | | /// <param name="byteCount">The size of data, in bytes.</param> |
| | | 72 | | /// <returns>Asynchronously returns deserialized value.</returns> |
| | | 73 | | /// <seealso cref="DataColumnSUKS.ReadValueAsync(int)"/> |
| | | 74 | | /// <seealso cref="ConnectionFunctionalitySU{TStatement, TStatementInformation, TStatementCreationArgs, TEnumerabl |
| | | 75 | | protected override ValueTask<Object> ReadValueAsync( Int32 byteCount ) |
| | | 76 | | { |
| | 656 | 77 | | return this.ConnectionFunctionality.UseStreamWithinStatementAsync( this.ReservedForStatement, () => this.ReadVa |
| | | 78 | | } |
| | | 79 | | |
| | | 80 | | /// <summary> |
| | | 81 | | /// Implements <see cref="DataColumnSUKS.DoReadFromStreamAsync(byte[], int, int)"/> and will call <see cref="ReadF |
| | | 82 | | /// </summary> |
| | | 83 | | /// <param name="array">The byte array where to read the data to.</param> |
| | | 84 | | /// <param name="offset">The offset in <paramref name="array"/> where to start writing bytes.</param> |
| | | 85 | | /// <param name="count">The maximum amount of bytes to write.</param> |
| | | 86 | | /// <returns>Asynchronously returns the amount of bytes read.</returns> |
| | | 87 | | /// <seealso cref="DataColumnSUKS.DoReadFromStreamAsync(byte[], int, int)"/> |
| | | 88 | | /// <seealso cref="ConnectionFunctionalitySU{TStatement, TStatementInformation, TStatementCreationArgs, TEnumerabl |
| | | 89 | | protected override ValueTask<Int32> DoReadFromStreamAsync( Byte[] array, Int32 offset, Int32 count ) |
| | | 90 | | { |
| | 10 | 91 | | return this.ConnectionFunctionality.UseStreamWithinStatementAsync( this.ReservedForStatement, () => this.ReadFr |
| | | 92 | | } |
| | | 93 | | |
| | | 94 | | /// <summary> |
| | | 95 | | /// Derived classes should implement this method to read binary data from underlying stream. |
| | | 96 | | /// </summary> |
| | | 97 | | /// <param name="array">The byte array where to read the data to.</param> |
| | | 98 | | /// <param name="offset">The offset in <paramref name="array"/> where to start writing bytes.</param> |
| | | 99 | | /// <param name="count">The maximum amount of bytes to write.</param> |
| | | 100 | | /// <returns>Asynchronously returns the amount of bytes read.</returns> |
| | | 101 | | protected abstract ValueTask<Int32> ReadFromStreamWhileReservedAsync( Byte[] array, Int32 offset, Int32 count ); |
| | | 102 | | |
| | | 103 | | /// <summary> |
| | | 104 | | /// Derived classes should implement this method to deserialize binary data into CLR object. |
| | | 105 | | /// </summary> |
| | | 106 | | /// <param name="byteCount">The size of the data, in bytes.</param> |
| | | 107 | | /// <returns>Asynchronously returns deserialized value.</returns> |
| | | 108 | | protected abstract ValueTask<Object> ReadValueWhileReservedAsync( Int32 byteCount ); |
| | | 109 | | |
| | | 110 | | } |
| | | 111 | | } |