Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / ndp / fx / src / DataWeb / Client / System / Data / Services / Client / DataServiceRequest.cs / 1 / DataServiceRequest.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // //// query request object // //--------------------------------------------------------------------- namespace System.Data.Services.Client { using System; using System.Collections.Generic; using System.Diagnostics; using System.IO; #if !ASTORIA_LIGHT // Data.Services http stack using System.Net; #else using System.Data.Services.Http; #endif using System.Xml; ///non-generic placeholder for generic implementation public abstract class DataServiceRequest { ///internal constructor so that only our assembly can provide an implementation internal DataServiceRequest() { } ///Element Type public abstract Type ElementType { get; } ///Gets the URI for a the query public abstract Uri RequestUri { get; } ///Gets the URI for a the query ///a string with the URI public override string ToString() { return this.RequestUri.ToString(); } ////// get an enumerable materializes the objects the response /// ///element type /// context /// reader /// elementType ///an enumerable internal static object CreateMaterializer(DataServiceContext context, XmlReader reader, Type elementType) { Debug.Assert(null == elementType, "non-null elementType with strongly typed create delegate"); return new MaterializeAtom.MaterializeAtomT (context, reader); } /// /// get an enumerable materializes the objects the response /// ///element type /// context /// contentType /// method to get http response stream ///an enumerable internal static IEnumerableMaterialize (DataServiceContext context, string contentType, Func response) { Func create = CreateMaterializer ; return (IEnumerable )context.GetMaterializer(null, contentType, response, create); } /// /// Creates a instance of strongly typed DataServiceRequest with the given element type. /// /// element type for the DataServiceRequest. /// constructor parameter. ///returns the strongly typed DataServiceRequest instance. internal static DataServiceRequest GetInstance(Type elementType, Uri requestUri) { Type genericType = typeof(DataServiceRequest<>).MakeGenericType(elementType); return (DataServiceRequest)Activator.CreateInstance(genericType, new object[] { requestUri }); } #if !ASTORIA_LIGHT // Synchronous methods not available ////// execute uri and materialize result /// ///element type /// context /// uri to execute ///enumerable of results internal IEnumerableExecute (DataServiceContext context, Uri requestUri) { Debug.Assert(null != context, "context is null"); IEnumerable result = null; QueryAsyncResult response = null; try { DataServiceRequest serviceRequest = new DataServiceRequest (requestUri); HttpWebRequest request = context.CreateRequest(requestUri, XmlConstants.HttpMethodGet, false, null); response = new QueryAsyncResult(this, "Execute", serviceRequest, request, null, null); response.Execute(null); if (HttpStatusCode.NoContent != response.StatusCode) { result = Materialize (context, response.ContentType, response.GetResponseStream); } return (IEnumerable )response.GetResponse(result, typeof(TElement)); } catch (InvalidOperationException ex) { QueryOperationResponse operationResponse = response.GetResponse(result, typeof(TElement)); if (null != operationResponse) { operationResponse.Error = ex; throw new DataServiceQueryException(Strings.DataServiceException_GeneralError, ex, operationResponse); } throw; } } #endif /// enumerable list of materialized objects from stream without having to know T /// context /// contentType /// function to get response stream ///see summary internal abstract System.Collections.IEnumerable Materialize(DataServiceContext context, string contentType, Funcresponse); /// /// Begins an asynchronous request to an Internet resource. /// /// source of execute (DataServiceQuery or DataServiceContext /// context /// The AsyncCallback delegate. /// The state object for this request. ///An IAsyncResult that references the asynchronous request for a response. internal IAsyncResult BeginExecute(object source, DataServiceContext context, AsyncCallback callback, object state) { Debug.Assert(null != context, "context is null"); HttpWebRequest request = context.CreateRequest(this.RequestUri, XmlConstants.HttpMethodGet, false, null); QueryAsyncResult result = new QueryAsyncResult(source, "Execute", this, request, callback, state); result.BeginExecute(null); return result; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // //// query request object // //--------------------------------------------------------------------- namespace System.Data.Services.Client { using System; using System.Collections.Generic; using System.Diagnostics; using System.IO; #if !ASTORIA_LIGHT // Data.Services http stack using System.Net; #else using System.Data.Services.Http; #endif using System.Xml; ///non-generic placeholder for generic implementation public abstract class DataServiceRequest { ///internal constructor so that only our assembly can provide an implementation internal DataServiceRequest() { } ///Element Type public abstract Type ElementType { get; } ///Gets the URI for a the query public abstract Uri RequestUri { get; } ///Gets the URI for a the query ///a string with the URI public override string ToString() { return this.RequestUri.ToString(); } ////// get an enumerable materializes the objects the response /// ///element type /// context /// reader /// elementType ///an enumerable internal static object CreateMaterializer(DataServiceContext context, XmlReader reader, Type elementType) { Debug.Assert(null == elementType, "non-null elementType with strongly typed create delegate"); return new MaterializeAtom.MaterializeAtomT (context, reader); } /// /// get an enumerable materializes the objects the response /// ///element type /// context /// contentType /// method to get http response stream ///an enumerable internal static IEnumerableMaterialize (DataServiceContext context, string contentType, Func response) { Func create = CreateMaterializer ; return (IEnumerable )context.GetMaterializer(null, contentType, response, create); } /// /// Creates a instance of strongly typed DataServiceRequest with the given element type. /// /// element type for the DataServiceRequest. /// constructor parameter. ///returns the strongly typed DataServiceRequest instance. internal static DataServiceRequest GetInstance(Type elementType, Uri requestUri) { Type genericType = typeof(DataServiceRequest<>).MakeGenericType(elementType); return (DataServiceRequest)Activator.CreateInstance(genericType, new object[] { requestUri }); } #if !ASTORIA_LIGHT // Synchronous methods not available ////// execute uri and materialize result /// ///element type /// context /// uri to execute ///enumerable of results internal IEnumerableExecute (DataServiceContext context, Uri requestUri) { Debug.Assert(null != context, "context is null"); IEnumerable result = null; QueryAsyncResult response = null; try { DataServiceRequest serviceRequest = new DataServiceRequest (requestUri); HttpWebRequest request = context.CreateRequest(requestUri, XmlConstants.HttpMethodGet, false, null); response = new QueryAsyncResult(this, "Execute", serviceRequest, request, null, null); response.Execute(null); if (HttpStatusCode.NoContent != response.StatusCode) { result = Materialize (context, response.ContentType, response.GetResponseStream); } return (IEnumerable )response.GetResponse(result, typeof(TElement)); } catch (InvalidOperationException ex) { QueryOperationResponse operationResponse = response.GetResponse(result, typeof(TElement)); if (null != operationResponse) { operationResponse.Error = ex; throw new DataServiceQueryException(Strings.DataServiceException_GeneralError, ex, operationResponse); } throw; } } #endif /// enumerable list of materialized objects from stream without having to know T /// context /// contentType /// function to get response stream ///see summary internal abstract System.Collections.IEnumerable Materialize(DataServiceContext context, string contentType, Funcresponse); /// /// Begins an asynchronous request to an Internet resource. /// /// source of execute (DataServiceQuery or DataServiceContext /// context /// The AsyncCallback delegate. /// The state object for this request. ///An IAsyncResult that references the asynchronous request for a response. internal IAsyncResult BeginExecute(object source, DataServiceContext context, AsyncCallback callback, object state) { Debug.Assert(null != context, "context is null"); HttpWebRequest request = context.CreateRequest(this.RequestUri, XmlConstants.HttpMethodGet, false, null); QueryAsyncResult result = new QueryAsyncResult(source, "Execute", this, request, callback, state); result.BeginExecute(null); return result; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ListViewDeleteEventArgs.cs
- _IPv4Address.cs
- WinEventHandler.cs
- PageAsyncTaskManager.cs
- TemplatePropertyEntry.cs
- ToolStripItemDataObject.cs
- InputProcessorProfiles.cs
- XmlWriterTraceListener.cs
- WinFormsSpinner.cs
- PointLightBase.cs
- ScrollableControl.cs
- ZipIOCentralDirectoryBlock.cs
- CfgSemanticTag.cs
- InfoCardConstants.cs
- Debug.cs
- Schema.cs
- FixedLineResult.cs
- MenuCommand.cs
- ListItem.cs
- RefExpr.cs
- PageFunction.cs
- WorkflowExecutor.cs
- LogManagementAsyncResult.cs
- HttpHandlersInstallComponent.cs
- BasicCellRelation.cs
- QilGenerator.cs
- PathGradientBrush.cs
- DeclarativeCatalogPart.cs
- DataColumnCollection.cs
- DetailsViewInsertEventArgs.cs
- DBCSCodePageEncoding.cs
- XmlSchemaSimpleContentExtension.cs
- SHA256.cs
- EraserBehavior.cs
- XmlTextReader.cs
- InputLanguage.cs
- StaticFileHandler.cs
- AuthenticationModuleElement.cs
- DirtyTextRange.cs
- RtfControlWordInfo.cs
- CommandDevice.cs
- ChtmlLinkAdapter.cs
- initElementDictionary.cs
- MemberHolder.cs
- SynchronizationLockException.cs
- DateTimeFormatInfoScanner.cs
- FixedSOMTable.cs
- EntityDataSourceValidationException.cs
- XmlObjectSerializerWriteContext.cs
- ObjectMemberMapping.cs
- DataKeyCollection.cs
- RootProfilePropertySettingsCollection.cs
- XmlMtomWriter.cs
- ViewGenerator.cs
- DataSourceControlBuilder.cs
- BigInt.cs
- ComplexBindingPropertiesAttribute.cs
- WebResourceUtil.cs
- MouseDevice.cs
- XmlText.cs
- ImageSourceConverter.cs
- RegionIterator.cs
- BulletChrome.cs
- QuotedStringWriteStateInfo.cs
- SmiConnection.cs
- DictionaryKeyPropertyAttribute.cs
- PasswordBoxAutomationPeer.cs
- NonBatchDirectoryCompiler.cs
- Utils.cs
- RedistVersionInfo.cs
- RenderDataDrawingContext.cs
- ProxyGenerationError.cs
- HttpProcessUtility.cs
- Sql8ExpressionRewriter.cs
- ReferenceEqualityComparer.cs
- OdbcErrorCollection.cs
- DetailsViewRowCollection.cs
- AtomServiceDocumentSerializer.cs
- GZipStream.cs
- TextSerializer.cs
- RotateTransform3D.cs
- DateTimeConstantAttribute.cs
- FontSourceCollection.cs
- SAPICategories.cs
- TableParagraph.cs
- RowsCopiedEventArgs.cs
- ArraySortHelper.cs
- RouteValueDictionary.cs
- XmlQuerySequence.cs
- Inflater.cs
- Lasso.cs
- FlatButtonAppearance.cs
- Listbox.cs
- TextLineBreak.cs
- ServiceChannelProxy.cs
- Path.cs
- BitmapDownload.cs
- ComponentCollection.cs
- SoapAttributes.cs
- IFlowDocumentViewer.cs