| | 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 AsyncEnumeration.Abstractions; |
| | 19 | | using AsyncEnumeration.Implementation.Enumerable; |
| | 20 | | using CBAM.Abstractions; |
| | 21 | | using CBAM.Abstractions.Implementation; |
| | 22 | | using System; |
| | 23 | | using System.Collections.Generic; |
| | 24 | | using System.Text; |
| | 25 | | using System.Threading; |
| | 26 | | using System.Threading.Tasks; |
| | 27 | | using UtilPack; |
| | 28 | |
|
| | 29 | | namespace CBAM.Abstractions.Implementation |
| | 30 | | { |
| | 31 | |
|
| | 32 | | /// <summary> |
| | 33 | | /// This interface provides a way to execute some code with checks that the connection is still useable, using <see c |
| | 34 | | /// This is typically desireable when connection uses unseekable stream (SU) as its communication channel to remote e |
| | 35 | | /// </summary> |
| | 36 | | /// <remarks> |
| | 37 | | /// These methods should really be protected methods of <see cref="ConnectionFunctionalitySU{TStatement, TStatementIn |
| | 38 | | /// </remarks> |
| | 39 | | public interface ConnectionFunctionalitySU |
| | 40 | | { |
| | 41 | | /// <summary> |
| | 42 | | /// This method will make sure that connection is reserved for given statement, and if so, execute the given async |
| | 43 | | /// </summary> |
| | 44 | | /// <param name="reservedState">The <see cref="ReservedForStatement"/> object identifying the statement the connec |
| | 45 | | /// <param name="action">The asynchronous callback to execute, if the connection is reserved to statement represen |
| | 46 | | /// <param name="throwIfBusy">If set to <c>true</c>, will throw an exception if currently underlying stream is res |
| | 47 | | /// <returns>A task which will complete when <paramref name="action"/> is completed and connection reservation sta |
| | 48 | | /// <exception cref="InvalidOperationException">If <paramref name="throwIfBusy"/> is <c>true</c>, and if this conn |
| | 49 | | Task UseStreamWithinStatementAsync( ReservedForStatement reservedState, Func<Task> action, Boolean throwIfBusy ); |
| | 50 | |
|
| | 51 | | /// <summary> |
| | 52 | | /// This method will make sure that connection is reserved for given statement, and if so, execute the given async |
| | 53 | | /// </summary> |
| | 54 | | /// <typeparam name="T">The asynchronous return type of <paramref name="func"/>.</typeparam> |
| | 55 | | /// <param name="reservedState">The <see cref="ReservedForStatement"/> object identifying the statement the connec |
| | 56 | | /// <param name="func">The asynchronous callback to execute, if the connection is reserved to statement represente |
| | 57 | | /// <returns>A task which will return result of <paramref name="func"/> and complete when <paramref name="func"/> |
| | 58 | | /// <exception cref="InvalidOperationException">If this connection is not reserved to statement represented by giv |
| | 59 | | ValueTask<T> UseStreamWithinStatementAsync<T>( ReservedForStatement reservedState, Func<ValueTask<T>> func ); |
| | 60 | |
|
| | 61 | | /// <summary> |
| | 62 | | /// This method will make sure that connection is not reserved for any statement, and if so, execute the given asy |
| | 63 | | /// </summary> |
| | 64 | | /// <param name="reservedState">The <see cref="ReservedForStatement"/> object identifying the statement reservatio |
| | 65 | | /// <param name="action">The asynchronous callback to execute, if the connection is not reserved for any statement |
| | 66 | | /// <param name="oneTimeOnly">If <c>true</c>, the connection reservation state will be returned to original after |
| | 67 | | /// <param name="throwIfBusy">If set to <c>true</c>, will throw an exception if currently underlying stream is res |
| | 68 | | /// <returns>A task which will complete when <paramref name="action"/> is completed and connection reservation sta |
| | 69 | | /// <exception cref="InvalidOperationException">If <paramref name="throwIfBusy"/> is <c>true</c>, and if this conn |
| | 70 | | Task UseStreamOutsideStatementAsync( ReservedForStatement reservedState, Func<Task> action, Boolean oneTimeOnly, B |
| | 71 | |
|
| | 72 | | /// <summary> |
| | 73 | | /// This method will make sure that connection is not reserved for any statement, and if so, execute the given asy |
| | 74 | | /// </summary> |
| | 75 | | /// <typeparam name="T">The asynchronous return type of <paramref name="func"/>.</typeparam> |
| | 76 | | /// <param name="reservedState">The <see cref="ReservedForStatement"/> object identifying the statement reservatio |
| | 77 | | /// <param name="func">The asynchronous callback to execute, if the connection is not reserved for any statement.< |
| | 78 | | /// <param name="oneTimeOnly">If <c>true</c>, the connection reservation state will be returned to original after |
| | 79 | | /// <returns>A task which will return result of <paramref name="func"/> and complete when <paramref name="func"/> |
| | 80 | | /// <exception cref="InvalidOperationException">If this connection is already reserved to another statement.</exce |
| | 81 | | ValueTask<T> UseStreamOutsideStatementAsync<T>( ReservedForStatement reservedState, Func<ValueTask<T>> func, Boole |
| | 82 | |
|
| | 83 | | /// <summary> |
| | 84 | | /// This method will make sure that connection is reserved to given statement, and then perform potentially asynch |
| | 85 | | /// </summary> |
| | 86 | | /// <param name="reservationObject">The <see cref="ReservedForStatement"/> object identifying the statement reserv |
| | 87 | | /// <returns>A task which will complete when dipose operations are done, and the connection reservation state has |
| | 88 | | /// <exception cref="InvalidOperationException">If this connection is not reserved to statement represented by giv |
| | 89 | | Task DisposeStatementAsync( ReservedForStatement reservationObject ); |
| | 90 | | } |
| | 91 | |
|
| | 92 | | /// <summary> |
| | 93 | | /// This class extends <see cref="PooledConnectionFunctionality{TStatement, TStatementInformation, TStatementCreation |
| | 94 | | /// In such scenarios, the whole stream is typically reserved for execution of single statement at a time. |
| | 95 | | /// </summary> |
| | 96 | | /// <typeparam name="TStatement">The type of statement to modify/query remote resource.</typeparam> |
| | 97 | | /// <typeparam name="TStatementInformation">The read-only information about the statement.</typeparam> |
| | 98 | | /// <typeparam name="TStatementCreationArgs">The type of arguments to create a new statement.</typeparam> |
| | 99 | | /// <typeparam name="TEnumerableItem">The type of items enumerated by statement.</typeparam> |
| | 100 | | /// <typeparam name="TVendor">The type of <see cref="ConnectionVendorFunctionality{TStatement, TStatementCreationArgs |
| | 101 | | public abstract class ConnectionFunctionalitySU<TStatement, TStatementInformation, TStatementCreationArgs, TEnumerabl |
| | 102 | | where TStatement : TStatementInformation |
| | 103 | | where TVendor : ConnectionVendorFunctionality<TStatement, TStatementCreationArgs> |
| | 104 | | { |
| | 105 | | private sealed class NotInUse : ConnectionStreamUsageState |
| | 106 | | { |
| 2 | 107 | | private NotInUse() |
| | 108 | | { |
| | 109 | |
|
| 2 | 110 | | } |
| | 111 | |
|
| 2 | 112 | | public static readonly NotInUse Instance = new NotInUse(); |
| | 113 | | } |
| | 114 | |
|
| | 115 | |
|
| | 116 | |
|
| | 117 | | private ConnectionStreamUsageState _currentlyExecutingStatement; |
| | 118 | |
|
| | 119 | | /// <summary> |
| | 120 | | /// Creates a new instance of <see cref="ConnectionFunctionalitySU{TStatement, TStatementInformation, TStatementCr |
| | 121 | | /// </summary> |
| | 122 | | /// <param name="vendor">The <see cref="ConnectionVendorFunctionality{TStatement, TStatementCreationArgs}"/>.</par |
| | 123 | | /// <param name="asyncProvider">The optional custom <see cref="IAsyncProvider"/>.</param> |
| | 124 | | public ConnectionFunctionalitySU( |
| | 125 | | TVendor vendor, |
| | 126 | | IAsyncProvider asyncProvider |
| | 127 | | ) |
| 26 | 128 | | : base( vendor ) |
| | 129 | | { |
| 26 | 130 | | this._currentlyExecutingStatement = NotInUse.Instance; |
| 26 | 131 | | this.AsyncProvider = ArgumentValidator.ValidateNotNull( nameof( asyncProvider ), asyncProvider ); |
| 26 | 132 | | } |
| | 133 | |
|
| | 134 | | /// <summary> |
| | 135 | | /// Gets the <see cref="IAsyncProvider"/> that is used for creating <see cref="IAsyncEnumerable{T}"/>s |
| | 136 | | /// </summary> |
| 98 | 137 | | protected IAsyncProvider AsyncProvider { get; } |
| | 138 | |
|
| | 139 | | /// <summary> |
| | 140 | | /// Implements <see cref="DefaultConnectionFunctionality{TStatement, TStatementInformation, TStatementCreationArgs |
| | 141 | | /// The <see cref="ExecuteStatement(TStatementInformation, ReservedForStatement)"/> method will be used to perform |
| | 142 | | /// </summary> |
| | 143 | | /// <param name="metadata">The statement information.</param> |
| | 144 | | /// <returns>The <see cref="IAsyncEnumerable{T}"/> that can sequentially enumerate items from underlying stream.</ |
| | 145 | | /// <seealso cref="AsyncEnumerationFactory.CreateExclusiveSequentialEnumerable{T}(SequentialEnumerationStartInfo{T |
| | 146 | | protected override IAsyncEnumerable<TEnumerableItem> CreateEnumerable( |
| | 147 | | TStatementInformation metadata |
| | 148 | | ) |
| | 149 | | { |
| 94 | 150 | | ReservedForStatement reservation = null; |
| 94 | 151 | | Func<ValueTask<(Boolean, TEnumerableItem)>> moveNext = null; |
| | 152 | |
|
| 94 | 153 | | return AsyncEnumerationFactory.CreateExclusiveSequentialEnumerable( AsyncEnumerationFactory.CreateSequentialSta |
| 94 | 154 | | async () => |
| 94 | 155 | | { |
| 94 | 156 | | TEnumerableItem item; |
| 94 | 157 | | Boolean success; |
| 275 | 158 | | if ( reservation == null && Interlocked.CompareExchange( ref reservation, this.CreateReservationObject |
| 94 | 159 | | { |
| 193 | 160 | | (item, success, moveNext) = await this.UseStreamOutsideStatementAsync( |
| 193 | 161 | | reservation, |
| 287 | 162 | | async () => await this.ExecuteStatement( metadata, reservation ), |
| 193 | 163 | | false |
| 193 | 164 | | ); |
| 193 | 165 | | } |
| 94 | 166 | | else |
| 94 | 167 | | { |
| 180 | 168 | | if ( moveNext == null ) |
| 94 | 169 | | { |
| 96 | 170 | | success = false; |
| 96 | 171 | | item = default; |
| 96 | 172 | | } |
| 94 | 173 | | else |
| 94 | 174 | | { |
| 178 | 175 | | (success, item) = await this.UseStreamWithinStatementAsync( reservation, moveNext ); |
| 94 | 176 | | } |
| 94 | 177 | | } |
| 94 | 178 | |
|
| 279 | 179 | | return (success, item); |
| 279 | 180 | | }, |
| 94 | 181 | | () => |
| 94 | 182 | | { |
| 190 | 183 | | var seenReservation = reservation; |
| 94 | 184 | |
|
| 191 | 185 | | Interlocked.Exchange( ref reservation, null ); |
| 192 | 186 | | Interlocked.Exchange( ref moveNext, null ); |
| 94 | 187 | |
|
| 192 | 188 | | return this.DisposeStatementAsync( seenReservation ); |
| 94 | 189 | | } ), |
| 94 | 190 | | this.AsyncProvider |
| 94 | 191 | | ); |
| | 192 | |
|
| | 193 | | } |
| | 194 | |
|
| | 195 | | /// <summary> |
| | 196 | | /// Derived classes should override this abstract method to provide custom execution logic for statement. |
| | 197 | | /// </summary> |
| | 198 | | /// <param name="stmt">The read-only information about statement being executed.</param> |
| | 199 | | /// <param name="reservationObject">The reservation object created by <see cref="CreateReservationObject(TStatemen |
| | 200 | | /// <returns>Information about the backend result and how to enumerate more results.</returns> |
| | 201 | | /// <remarks> |
| | 202 | | /// The connection will be marked as reserved to the statement before this method is called. |
| | 203 | | /// </remarks> |
| | 204 | | protected abstract ValueTask<(TEnumerableItem, Boolean, Func<ValueTask<(Boolean, TEnumerableItem)>>)> ExecuteState |
| | 205 | |
|
| | 206 | | /// <summary> |
| | 207 | | /// Derived classes should override this abstract method to create custom <see cref="ReservedForStatement"/> objec |
| | 208 | | /// </summary> |
| | 209 | | /// <param name="stmt">The read-only information about statement being executed.</param> |
| | 210 | | /// <returns>A new instance of <see cref="ReservedForStatement"/> which will be used to mark this connection as be |
| | 211 | | protected abstract ReservedForStatement CreateReservationObject( TStatementInformation stmt ); |
| | 212 | |
|
| | 213 | |
|
| | 214 | | /// <inheritdoc /> |
| | 215 | | public async Task UseStreamOutsideStatementAsync( ReservedForStatement reservedState, Func<Task> action, Boolean o |
| | 216 | | { |
| 1 | 217 | | if ( ReferenceEquals( Interlocked.CompareExchange( ref this._currentlyExecutingStatement, reservedState, NotInU |
| | 218 | | { |
| | 219 | | try |
| | 220 | | { |
| 1 | 221 | | await this.UseStreamWithinStatementAsync( reservedState, action ); |
| 1 | 222 | | } |
| | 223 | | finally |
| | 224 | | { |
| 1 | 225 | | if ( oneTimeOnly ) |
| | 226 | | { |
| 0 | 227 | | Interlocked.Exchange( ref this._currentlyExecutingStatement, NotInUse.Instance ); |
| | 228 | | } |
| | 229 | | } |
| | 230 | | } |
| 0 | 231 | | else if ( throwIfBusy ) |
| | 232 | | { |
| 0 | 233 | | throw new InvalidOperationException( "The connection is currently being used by another statement." ); |
| | 234 | | } |
| 1 | 235 | | } |
| | 236 | |
|
| | 237 | | /// <inheritdoc /> |
| | 238 | | public async ValueTask<T> UseStreamOutsideStatementAsync<T>( ReservedForStatement reservedState, Func<ValueTask<T> |
| | 239 | | { |
| 93 | 240 | | if ( ReferenceEquals( Interlocked.CompareExchange( ref this._currentlyExecutingStatement, reservedState, NotInU |
| | 241 | | { |
| | 242 | | try |
| | 243 | | { |
| 99 | 244 | | return await this.UseStreamWithinStatementAsync( reservedState, func ); |
| | 245 | | } |
| | 246 | | finally |
| | 247 | | { |
| 99 | 248 | | if ( oneTimeOnly ) |
| | 249 | | { |
| 0 | 250 | | Interlocked.Exchange( ref this._currentlyExecutingStatement, NotInUse.Instance ); |
| | 251 | | } |
| | 252 | | } |
| | 253 | | } |
| | 254 | | else |
| | 255 | | { |
| 0 | 256 | | throw new InvalidOperationException( "The connection is currently being used by another statement." ); |
| | 257 | | } |
| 98 | 258 | | } |
| | 259 | |
|
| | 260 | | /// <inheritdoc /> |
| | 261 | | public async Task UseStreamWithinStatementAsync( ReservedForStatement reservedState, Func<Task> action, Boolean th |
| | 262 | | { |
| 96 | 263 | | ArgumentValidator.ValidateNotNull( nameof( reservedState ), reservedState ); |
| | 264 | | ConnectionStreamUsageState prevState; |
| 98 | 265 | | if ( ReferenceEquals( ( prevState = Interlocked.CompareExchange( ref this._currentlyExecutingStatement, reserve |
| 98 | 266 | | || ReferenceEquals( prevState, reservedState.UsageState ) // Re-entrance |
| 98 | 267 | | ) |
| | 268 | | { |
| | 269 | | try |
| | 270 | | { |
| 102 | 271 | | await action(); |
| 102 | 272 | | } |
| | 273 | | finally |
| | 274 | | { |
| 102 | 275 | | Interlocked.Exchange( ref this._currentlyExecutingStatement, prevState ); |
| | 276 | | } |
| | 277 | | } |
| 0 | 278 | | else if ( throwIfBusy ) |
| | 279 | | { |
| 0 | 280 | | throw new InvalidOperationException( "The stream is not reserved for this statement." ); |
| | 281 | | } |
| 102 | 282 | | } |
| | 283 | |
|
| | 284 | | /// <inheritdoc /> |
| | 285 | | public async ValueTask<T> UseStreamWithinStatementAsync<T>( ReservedForStatement reservedState, Func<ValueTask<T>> |
| | 286 | | { |
| 590 | 287 | | ArgumentValidator.ValidateNotNull( nameof( reservedState ), reservedState ); |
| | 288 | | ConnectionStreamUsageState prevState; |
| 595 | 289 | | if ( ReferenceEquals( ( prevState = Interlocked.CompareExchange( ref this._currentlyExecutingStatement, reserve |
| 595 | 290 | | || ReferenceEquals( prevState, reservedState.UsageState ) // Re-entrance |
| 595 | 291 | | ) |
| | 292 | | { |
| | 293 | | try |
| | 294 | | { |
| 597 | 295 | | return await func(); |
| | 296 | | } |
| | 297 | | finally |
| | 298 | | { |
| 597 | 299 | | Interlocked.Exchange( ref this._currentlyExecutingStatement, prevState ); |
| | 300 | | } |
| | 301 | | } |
| | 302 | | else |
| | 303 | | { |
| 0 | 304 | | throw new InvalidOperationException( "The stream is not reserved for this statement." ); |
| | 305 | | } |
| 598 | 306 | | } |
| | 307 | |
|
| | 308 | | /// <inheritdoc /> |
| | 309 | | public async Task DisposeStatementAsync( ReservedForStatement reservationObject ) |
| | 310 | | { |
| | 311 | | try |
| | 312 | | { |
| 191 | 313 | | await this.UseStreamWithinStatementAsync( reservationObject, () => this.PerformDisposeStatementAsync( reserv |
| 101 | 314 | | } |
| | 315 | | finally |
| | 316 | | { |
| 101 | 317 | | Interlocked.Exchange( ref this._currentlyExecutingStatement, NotInUse.Instance ); |
| | 318 | | } |
| 100 | 319 | | } |
| | 320 | |
|
| | 321 | | /// <summary> |
| | 322 | | /// Derived classes should override this abstract method to implement custom dispose functionality when the statem |
| | 323 | | /// </summary> |
| | 324 | | /// <param name="reservationObject">The <see cref="ReservedForStatement"/> identifying the statement.</param> |
| | 325 | | /// <returns>The task which will complete when the dispose procedure has been completed.</returns> |
| | 326 | | protected abstract Task PerformDisposeStatementAsync( ReservedForStatement reservationObject ); |
| | 327 | |
|
| | 328 | | /// <summary> |
| | 329 | | /// This property implements <see cref="PooledConnectionFunctionality.CanBeReturnedToPool"/> by checking that this |
| | 330 | | /// </summary> |
| | 331 | | /// <value>Will return <c>true</c> if this connection is not reserved for any statement.</value> |
| 0 | 332 | | public override Boolean CanBeReturnedToPool => ReferenceEquals( this._currentlyExecutingStatement, NotInUse.Instan |
| | 333 | |
|
| | 334 | | } |
| | 335 | |
|
| | 336 | |
|
| | 337 | | /// <summary> |
| | 338 | | /// This is common class which is used to mark <see cref="ConnectionFunctionalitySU{TStatement, TStatementInformation |
| | 339 | | /// </summary> |
| | 340 | | public abstract class ConnectionStreamUsageState |
| | 341 | | { |
| | 342 | |
|
| | 343 | | } |
| | 344 | |
|
| | 345 | | /// <summary> |
| | 346 | | /// This class is used to mark <see cref="ConnectionFunctionalitySU{TStatement, TStatementInformation, TStatementCrea |
| | 347 | | /// Whenever any actual communication with remote resource is being done, the value of <see cref="UsageState"/> prope |
| | 348 | | /// </summary> |
| | 349 | | public class ReservedForStatement : ConnectionStreamUsageState |
| | 350 | | { |
| | 351 | | /// <summary> |
| | 352 | | /// Creates a new instance of <see cref="ReservedForStatement"/> and also new instance of <see cref="CurrentlyInUs |
| | 353 | | /// </summary> |
| | 354 | | public ReservedForStatement( |
| | 355 | | #if DEBUG |
| | 356 | | Object statement |
| | 357 | | #endif |
| | 358 | | ) |
| | 359 | | { |
| | 360 | | #if DEBUG |
| | 361 | | this.Statement = statement; |
| | 362 | | #endif |
| | 363 | | this.UsageState = new CurrentlyInUse( |
| | 364 | | #if DEBUG |
| | 365 | | statement |
| | 366 | | #endif |
| | 367 | | ); |
| | 368 | | } |
| | 369 | | #if DEBUG |
| | 370 | | public Object Statement { get; } |
| | 371 | | #endif |
| | 372 | | /// <summary> |
| | 373 | | /// Gets the <see cref="CurrentlyInUse"/> object used to mark <see cref="ConnectionFunctionalitySU{TStatement, TSt |
| | 374 | | /// </summary> |
| | 375 | | /// <value>The <see cref="CurrentlyInUse"/> object used to mark <see cref="ConnectionFunctionalitySU{TStatement, T |
| | 376 | | public CurrentlyInUse UsageState { get; } |
| | 377 | | } |
| | 378 | |
|
| | 379 | | /// <summary> |
| | 380 | | /// This class is used to mark <see cref="ConnectionFunctionalitySU{TStatement, TStatementInformation, TStatementCrea |
| | 381 | | /// </summary> |
| | 382 | | /// <remarks> |
| | 383 | | /// The instances of this class can only be created by constructor of <see cref="ReservedForStatement"/> class. |
| | 384 | | /// </remarks> |
| | 385 | | public sealed class CurrentlyInUse : ConnectionStreamUsageState |
| | 386 | | { |
| | 387 | | internal CurrentlyInUse( |
| | 388 | | #if DEBUG |
| | 389 | | Object statement |
| | 390 | | #endif |
| | 391 | | ) |
| | 392 | | { |
| | 393 | | #if DEBUG |
| | 394 | | this.Statement = statement; |
| | 395 | | #endif |
| | 396 | | } |
| | 397 | |
|
| | 398 | | #if DEBUG |
| | 399 | | public Object Statement { get; } |
| | 400 | | #endif |
| | 401 | | } |
| | 402 | | } |
| | 403 | |
|
| | 404 | | /// <summary> |
| | 405 | | /// Contains extension methods for types defined in this assembly. |
| | 406 | | /// </summary> |
| | 407 | | public static partial class E_CBAM |
| | 408 | | { |
| | 409 | | private static readonly ReservedForStatement _NoStatement = new ReservedForStatement( |
| | 410 | | #if DEBUG |
| | 411 | | null |
| | 412 | | #endif |
| | 413 | | ); |
| | 414 | |
|
| | 415 | | /// <summary> |
| | 416 | | /// This method will make sure that connection is not reserved for any statement, and if so, execute the given asynch |
| | 417 | | /// </summary> |
| | 418 | | /// <param name="functionality">This <see cref="ConnectionFunctionalitySU"/>.</param> |
| | 419 | | /// <param name="action">The asynchronous callback to execute, if connection is not reserved for any statement.</para |
| | 420 | | /// <param name="throwIfBusy">If set to <c>true</c>, will throw an exception if currently underlying stream is reserv |
| | 421 | | /// <returns>A task which will complete when <paramref name="action"/> is completed and connection reservation state |
| | 422 | | /// <exception cref="NullReferenceException">If this <see cref="ConnectionFunctionalitySU"/> is <c>null</c>.</excepti |
| | 423 | | /// <exception cref="InvalidOperationException">If <paramref name="throwIfBusy"/> is <c>true</c>, and if this connect |
| | 424 | | public static Task UseStreamOutsideStatementAsync( this ConnectionFunctionalitySU functionality, Func<Task> action, B |
| | 425 | | { |
| | 426 | | return functionality.UseStreamOutsideStatementAsync( _NoStatement, action, true, throwIfBusy ); |
| | 427 | | } |
| | 428 | |
|
| | 429 | | /// <summary> |
| | 430 | | /// This method will make sure that connection is not reserved for any statement, and if so, execute the given asynch |
| | 431 | | /// </summary> |
| | 432 | | /// <param name="functionality">This <see cref="ConnectionFunctionalitySU"/>.</param> |
| | 433 | | /// <param name="func">The asynchronous callback to execute, if connection is not reserved for any statement.</param> |
| | 434 | | /// <returns>A task which will complete when <paramref name="func"/> is completed and connection reservation state ha |
| | 435 | | /// <exception cref="NullReferenceException">If this <see cref="ConnectionFunctionalitySU"/> is <c>null</c>.</excepti |
| | 436 | | /// <exception cref="InvalidOperationException">If this connection is reserved to any statement.</exception> |
| | 437 | | public static ValueTask<T> UseStreamOutsideStatementAsync<T>( this ConnectionFunctionalitySU functionality, Func<Valu |
| | 438 | | { |
| | 439 | | return functionality.UseStreamOutsideStatementAsync( _NoStatement, func, true ); |
| | 440 | | } |
| | 441 | | } |