Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / 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
- NavigationHelper.cs
- XComponentModel.cs
- ExecutionContext.cs
- ConstructorNeedsTagAttribute.cs
- StringUtil.cs
- InstancePersistenceCommandException.cs
- UseLicense.cs
- IdleTimeoutMonitor.cs
- WSFederationHttpBinding.cs
- DbMetaDataFactory.cs
- PanelDesigner.cs
- TypeExtension.cs
- GraphicsState.cs
- PropertyAccessVisitor.cs
- InstalledFontCollection.cs
- FormatVersion.cs
- SharedDp.cs
- SmiXetterAccessMap.cs
- FixedSOMPageElement.cs
- SmiRequestExecutor.cs
- NumericUpDownAccelerationCollection.cs
- StrongName.cs
- Function.cs
- WorkflowPrinting.cs
- FilteredAttributeCollection.cs
- GridSplitter.cs
- XPathSingletonIterator.cs
- UnsafeNativeMethods.cs
- AuthenticateEventArgs.cs
- AddingNewEventArgs.cs
- ExpressionBuilderCollection.cs
- PersonalizationProvider.cs
- MasterPageCodeDomTreeGenerator.cs
- ClipboardProcessor.cs
- sitestring.cs
- SafeUserTokenHandle.cs
- StreamReader.cs
- LinkButton.cs
- CatalogPartChrome.cs
- WhereaboutsReader.cs
- RangeBase.cs
- AuthenticationService.cs
- Track.cs
- Visitor.cs
- RightsManagementResourceHelper.cs
- GridViewEditEventArgs.cs
- ToggleProviderWrapper.cs
- ReadOnlyDataSource.cs
- InProcStateClientManager.cs
- _FixedSizeReader.cs
- HttpModulesSection.cs
- LoginCancelEventArgs.cs
- ModulesEntry.cs
- SqlDataSourceConfigureSortForm.cs
- SettingsPropertyIsReadOnlyException.cs
- _SafeNetHandles.cs
- FileDocument.cs
- OrderedDictionary.cs
- Msec.cs
- DateTimeParse.cs
- DataGridViewToolTip.cs
- XmlDataImplementation.cs
- CodeStatement.cs
- SqlCommand.cs
- GetReadStreamResult.cs
- FontSource.cs
- DeferredSelectedIndexReference.cs
- ExpandSegment.cs
- Graphics.cs
- RealizedColumnsBlock.cs
- QueryAccessibilityHelpEvent.cs
- WindowsScrollBarBits.cs
- OdbcPermission.cs
- SplashScreenNativeMethods.cs
- BinaryNode.cs
- TextProviderWrapper.cs
- DebuggerService.cs
- PointLightBase.cs
- TextChange.cs
- CommandConverter.cs
- cookiecollection.cs
- CodeStatement.cs
- Bold.cs
- DataSourceCache.cs
- DefaultExpression.cs
- OleAutBinder.cs
- DefinitionProperties.cs
- FilterUserControlBase.cs
- ChineseLunisolarCalendar.cs
- XmlReflectionImporter.cs
- RedistVersionInfo.cs
- OutputCacheEntry.cs
- PanelStyle.cs
- ToolStripItemCollection.cs
- MouseEvent.cs
- RegexNode.cs
- TextElement.cs
- BufferedReadStream.cs
- CultureMapper.cs
- Win32Interop.cs