Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / HttpCacheParams.cs / 2 / HttpCacheParams.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * Cache Vary class. Wraps Vary header * * Copyright (c) 1998 Microsoft Corporation */ namespace System.Web { using System.Text; using System.Runtime.InteropServices; using System.Web.Util; using System.Security.Permissions; ////// [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] public sealed class HttpCacheVaryByParams { HttpDictionary _parameters; int _ignoreParams; bool _isModified; bool _paramsStar; internal HttpCacheVaryByParams() { Reset(); } internal void Reset() { _isModified = false; _paramsStar = false; _parameters = null; _ignoreParams = -1; } /* * Reset based on the cached vary headers. */ internal void ResetFromParams(String[] parameters) { int i, n; Reset(); if (parameters != null) { _isModified = true; if (parameters[0].Length == 0) { Debug.Assert(parameters.Length == 1, "parameters.Length == 1"); IgnoreParams = true; } else if (parameters[0].Equals("*")) { Debug.Assert(parameters.Length == 1, "parameters.Length == 1"); _paramsStar = true; } else { _parameters = new HttpDictionary(); for (i = 0, n = parameters.Length; i < n; i++) { _parameters.SetValue(parameters[i], parameters[i]); } } } } internal bool IsModified() { return _isModified; } internal bool AcceptsParams() { return _ignoreParams == 1 || _paramsStar || _parameters != null; } internal String[] GetParams() { String[] s = null; Object item; int i, j, c, n; if (_ignoreParams == 1) { s = new String[1] {String.Empty}; } else if (_paramsStar) { s = new String[1] {"*"}; } else if (_parameters != null) { n = _parameters.Size; c = 0; for (i = 0; i < n; i++) { item = _parameters.GetValue(i); if (item != null) { c++; } } if (c > 0) { s = new string[c]; j = 0; for (i = 0; i < n; i++) { item = _parameters.GetValue(i); if (item != null) { s[j] = (String) item; j++; } } Debug.Assert(j == c, "j == c"); } } return s; } // // Public methods and properties // ///Indicates that a cache should contain multiple /// representations for a particular Uri. This class is an encapsulation that /// provides a rich, type-safe way to set the Vary header. ////// public bool this[String header] { get { if (header == null) { throw new ArgumentNullException("header"); } if (header.Length == 0) { return _ignoreParams == 1; } else { return _paramsStar || (_parameters != null && _parameters.GetValue(header) != null); } } set { if (header == null) { throw new ArgumentNullException("header"); } if (header.Length == 0) { IgnoreParams = value; } /* * Since adding a Vary parameter is more restrictive, we don't * want components to be able to set a Vary parameter to false * if another component has set it to true. */ else if (value) { _isModified = true; _ignoreParams = 0; if (header.Equals("*")) { _paramsStar = true; _parameters = null; } else { // set value to header if true or null if false if (!_paramsStar) { if (_parameters == null) { _parameters = new HttpDictionary(); } _parameters.SetValue(header, header); } } } } } public bool IgnoreParams { get { return _ignoreParams == 1; } set { // Don't ignore if params have been added if (_paramsStar || _parameters != null) { return; } if (_ignoreParams == -1 || _ignoreParams == 1) { _ignoreParams = value ? 1 : 0; _isModified = true; } } } internal bool IsVaryByStar { get { return _paramsStar; } } } }Default property. /// Indexed property indicating that a cache should (or should not) vary according /// to a custom header. ///
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- CompositeControl.cs
- StringToken.cs
- Attributes.cs
- ValidationPropertyAttribute.cs
- ImpersonateTokenRef.cs
- ApplicationFileParser.cs
- RegexCapture.cs
- BamlWriter.cs
- EntityTypeEmitter.cs
- RegexGroup.cs
- GroupBoxAutomationPeer.cs
- SymmetricAlgorithm.cs
- XmlMembersMapping.cs
- StyleXamlParser.cs
- XPathArrayIterator.cs
- BridgeDataReader.cs
- MenuItem.cs
- CreateRefExpr.cs
- PropertyEmitter.cs
- ExpressionNormalizer.cs
- ObfuscationAttribute.cs
- ModelUIElement3D.cs
- MultiAsyncResult.cs
- TextParagraphView.cs
- ConsumerConnectionPoint.cs
- DesignBindingEditor.cs
- metadatamappinghashervisitor.cs
- SystemColorTracker.cs
- QilScopedVisitor.cs
- GlyphsSerializer.cs
- ObjectViewEntityCollectionData.cs
- PropertyPath.cs
- XmlSchemaAnnotated.cs
- EnumMember.cs
- DateTime.cs
- WebBrowserNavigatedEventHandler.cs
- CounterSampleCalculator.cs
- ViewSimplifier.cs
- XPathNavigatorKeyComparer.cs
- HttpModuleCollection.cs
- invalidudtexception.cs
- VisualTreeHelper.cs
- ObjectSet.cs
- GridView.cs
- PropertyGrid.cs
- MenuItem.cs
- KnownAssemblyEntry.cs
- ImageFormat.cs
- EntityDataSourceStatementEditor.cs
- FactoryId.cs
- NetCodeGroup.cs
- StringDictionary.cs
- Rect3D.cs
- SerialReceived.cs
- CompilationLock.cs
- WebDescriptionAttribute.cs
- Common.cs
- NativeMethodsCLR.cs
- SpeechSeg.cs
- FixedPageProcessor.cs
- MissingMemberException.cs
- MembershipValidatePasswordEventArgs.cs
- ColorPalette.cs
- XmlText.cs
- FloaterParaClient.cs
- DragSelectionMessageFilter.cs
- PhysicalAddress.cs
- XmlSchemaInferenceException.cs
- ButtonColumn.cs
- MetadataPropertyCollection.cs
- TableAutomationPeer.cs
- ProcessInputEventArgs.cs
- XmlUtilWriter.cs
- SettingsSection.cs
- LockCookie.cs
- WebControlsSection.cs
- XmlUrlResolver.cs
- SetIterators.cs
- Overlapped.cs
- CollectionTraceRecord.cs
- BinaryMethodMessage.cs
- Package.cs
- IgnoreDeviceFilterElementCollection.cs
- InputProcessorProfilesLoader.cs
- SortExpressionBuilder.cs
- GregorianCalendar.cs
- TcpChannelListener.cs
- FixedSOMTable.cs
- SQlBooleanStorage.cs
- InternalResources.cs
- FormViewRow.cs
- TemplateBindingExpression.cs
- SimpleTypeResolver.cs
- DataGridTablesFactory.cs
- WindowsStatic.cs
- AmbientProperties.cs
- AsyncStreamReader.cs
- BuildResult.cs
- PointHitTestParameters.cs
- NamedElement.cs