Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / Xml / System / Xml / XPath / Internal / FunctionQuery.cs / 1 / FunctionQuery.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace MS.Internal.Xml.XPath { using System; using System.Xml; using System.Xml.Xsl; using System.Xml.XPath; using System.Diagnostics; using System.Globalization; using System.Collections.Generic; internal sealed class FunctionQuery : ExtensionQuery { private IListargs; private IXsltContextFunction function; public FunctionQuery(string prefix, string name, List args) : base(prefix, name) { this.args = args; } private FunctionQuery(FunctionQuery other) : base(other) { this.function = other.function; Query[] tmp = new Query[other.args.Count]; { for (int i = 0; i < tmp.Length; i ++) { tmp[i] = Clone(other.args[i]); } args = tmp; } this.args = tmp; } public override void SetXsltContext(XsltContext context) { if (context == null) { throw XPathException.Create(Res.Xp_NoContext); } if (this.xsltContext != context) { xsltContext = context; foreach (Query argument in args) { argument.SetXsltContext(context); } XPathResultType[] argTypes = new XPathResultType[args.Count]; for(int i = 0; i < args.Count; i ++) { argTypes[i] = args[i].StaticType; } function = xsltContext.ResolveFunction(prefix, name, argTypes); // KB article allows to return null, see http://support.microsoft.com/?kbid=324462#6 if (function == null) { throw XPathException.Create(Res.Xp_UndefFunc, QName); } } } public override object Evaluate(XPathNodeIterator nodeIterator) { if (xsltContext == null) { throw XPathException.Create(Res.Xp_NoContext); } // calculate arguments: object[] argVals = new object[args.Count]; for (int i = 0; i < args.Count; i ++) { argVals[i] = args[i].Evaluate(nodeIterator); if (argVals[i] is XPathNodeIterator) {// ForBack Compat. To protect our queries from users. bug#372077 & 20006123 argVals[i] = new XPathSelectionIterator(nodeIterator.Current, args[i]); } } try { return ProcessResult(function.Invoke(xsltContext, argVals, nodeIterator.Current)); } catch(Exception ex) { throw XPathException.Create(Res.Xp_FunctionFailed, QName, ex); } } public override XPathNavigator MatchNode(XPathNavigator navigator) { if (name != "key" && prefix.Length != 0) { throw XPathException.Create(Res.Xp_InvalidPattern); } this.Evaluate(new XPathSingletonIterator(navigator, /*moved:*/true)); XPathNavigator nav = null; while ((nav = this.Advance()) != null) { if (nav.IsSamePosition(navigator)) { return nav; } } return nav; } public override XPathResultType StaticType { get { XPathResultType result = function != null ? function.ReturnType : XPathResultType.Any; if (result == XPathResultType.Error) { // In v.1 we confused Error & Any so now for backward compatibility we should allow users to return any of them. result = XPathResultType.Any; } return result; } } public override XPathNodeIterator Clone() { return new FunctionQuery(this); } public override void PrintQuery(XmlWriter w) { w.WriteStartElement(this.GetType().Name); w.WriteAttributeString("name", prefix.Length != 0 ? prefix + ':' + name : name); foreach(Query arg in this.args) { arg.PrintQuery(w); } w.WriteEndElement(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ // // Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace MS.Internal.Xml.XPath { using System; using System.Xml; using System.Xml.Xsl; using System.Xml.XPath; using System.Diagnostics; using System.Globalization; using System.Collections.Generic; internal sealed class FunctionQuery : ExtensionQuery { private IListargs; private IXsltContextFunction function; public FunctionQuery(string prefix, string name, List args) : base(prefix, name) { this.args = args; } private FunctionQuery(FunctionQuery other) : base(other) { this.function = other.function; Query[] tmp = new Query[other.args.Count]; { for (int i = 0; i < tmp.Length; i ++) { tmp[i] = Clone(other.args[i]); } args = tmp; } this.args = tmp; } public override void SetXsltContext(XsltContext context) { if (context == null) { throw XPathException.Create(Res.Xp_NoContext); } if (this.xsltContext != context) { xsltContext = context; foreach (Query argument in args) { argument.SetXsltContext(context); } XPathResultType[] argTypes = new XPathResultType[args.Count]; for(int i = 0; i < args.Count; i ++) { argTypes[i] = args[i].StaticType; } function = xsltContext.ResolveFunction(prefix, name, argTypes); // KB article allows to return null, see http://support.microsoft.com/?kbid=324462#6 if (function == null) { throw XPathException.Create(Res.Xp_UndefFunc, QName); } } } public override object Evaluate(XPathNodeIterator nodeIterator) { if (xsltContext == null) { throw XPathException.Create(Res.Xp_NoContext); } // calculate arguments: object[] argVals = new object[args.Count]; for (int i = 0; i < args.Count; i ++) { argVals[i] = args[i].Evaluate(nodeIterator); if (argVals[i] is XPathNodeIterator) {// ForBack Compat. To protect our queries from users. bug#372077 & 20006123 argVals[i] = new XPathSelectionIterator(nodeIterator.Current, args[i]); } } try { return ProcessResult(function.Invoke(xsltContext, argVals, nodeIterator.Current)); } catch(Exception ex) { throw XPathException.Create(Res.Xp_FunctionFailed, QName, ex); } } public override XPathNavigator MatchNode(XPathNavigator navigator) { if (name != "key" && prefix.Length != 0) { throw XPathException.Create(Res.Xp_InvalidPattern); } this.Evaluate(new XPathSingletonIterator(navigator, /*moved:*/true)); XPathNavigator nav = null; while ((nav = this.Advance()) != null) { if (nav.IsSamePosition(navigator)) { return nav; } } return nav; } public override XPathResultType StaticType { get { XPathResultType result = function != null ? function.ReturnType : XPathResultType.Any; if (result == XPathResultType.Error) { // In v.1 we confused Error & Any so now for backward compatibility we should allow users to return any of them. result = XPathResultType.Any; } return result; } } public override XPathNodeIterator Clone() { return new FunctionQuery(this); } public override void PrintQuery(XmlWriter w) { w.WriteStartElement(this.GetType().Name); w.WriteAttributeString("name", prefix.Length != 0 ? prefix + ':' + name : name); foreach(Query arg in this.args) { arg.PrintQuery(w); } w.WriteEndElement(); } } } // 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
- PenContext.cs
- StaticSiteMapProvider.cs
- TreeNodeStyleCollectionEditor.cs
- HttpResponseBase.cs
- GridViewRowCollection.cs
- DiscoveryClientChannelFactory.cs
- StaticDataManager.cs
- WebFaultException.cs
- PriorityChain.cs
- KeyMatchBuilder.cs
- BitmapEffectGeneralTransform.cs
- SmiMetaDataProperty.cs
- FileDialog.cs
- FileLoadException.cs
- AnnotationResourceCollection.cs
- DurableInstancingOptions.cs
- DataSysAttribute.cs
- CodeMethodInvokeExpression.cs
- PathSegmentCollection.cs
- DataServiceRequestOfT.cs
- HttpListenerResponse.cs
- MailWriter.cs
- LocatorGroup.cs
- RouteItem.cs
- WindowPattern.cs
- RIPEMD160.cs
- NotSupportedException.cs
- OdbcInfoMessageEvent.cs
- XAMLParseException.cs
- Point3DAnimationUsingKeyFrames.cs
- SchemaElementLookUpTable.cs
- HtmlImage.cs
- SqlBuilder.cs
- StaticDataManager.cs
- ValueChangedEventManager.cs
- ManipulationInertiaStartingEventArgs.cs
- XmlAtomicValue.cs
- AttributeParameterInfo.cs
- Timer.cs
- Overlapped.cs
- SelectionHighlightInfo.cs
- TdsParserSafeHandles.cs
- EditingCommands.cs
- TextDecorationLocationValidation.cs
- FixedPosition.cs
- CacheAxisQuery.cs
- CngProvider.cs
- RenderOptions.cs
- ContentDesigner.cs
- ContextMenuAutomationPeer.cs
- DbConnectionClosed.cs
- TableLayoutSettings.cs
- _StreamFramer.cs
- Update.cs
- ObjectStateEntryDbDataRecord.cs
- WorkflowDesignerMessageFilter.cs
- XmlRawWriter.cs
- FunctionUpdateCommand.cs
- DataGridViewEditingControlShowingEventArgs.cs
- ZipIOZip64EndOfCentralDirectoryBlock.cs
- ToolStripGripRenderEventArgs.cs
- StrokeNode.cs
- EdmEntityTypeAttribute.cs
- ByteStack.cs
- Timer.cs
- WebPartEventArgs.cs
- BamlLocalizableResourceKey.cs
- HttpRawResponse.cs
- ObjectSecurity.cs
- JobDuplex.cs
- WorkflowPersistenceService.cs
- ChildDocumentBlock.cs
- X509WindowsSecurityToken.cs
- DataSourceProvider.cs
- ErrorTableItemStyle.cs
- SchemaElement.cs
- RadioButton.cs
- WindowsGraphics2.cs
- HtmlSelect.cs
- FreezableCollection.cs
- Control.cs
- basenumberconverter.cs
- StyleXamlParser.cs
- SequenceFullException.cs
- ThreadAbortException.cs
- Point3DAnimationUsingKeyFrames.cs
- CreateUserErrorEventArgs.cs
- PrintControllerWithStatusDialog.cs
- GrammarBuilderBase.cs
- ToolStripRenderer.cs
- InstanceStoreQueryResult.cs
- EpmSyndicationContentSerializer.cs
- ClrProviderManifest.cs
- OleCmdHelper.cs
- SmtpSection.cs
- TdsParserStateObject.cs
- ScrollEvent.cs
- Menu.cs
- MeasureItemEvent.cs
- FontFamilyIdentifier.cs