Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / Xml / System / Xml / XPath / Internal / UnionExpr.cs / 1 / UnionExpr.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace MS.Internal.Xml.XPath { using System; using System.Xml; using System.Xml.XPath; using System.Diagnostics; using System.Xml.Xsl; internal sealed class UnionExpr : Query { internal Query qy1, qy2; private bool advance1, advance2; private XPathNavigator currentNode; private XPathNavigator nextNode; public UnionExpr(Query query1, Query query2) { this.qy1 = query1; this.qy2 = query2; this.advance1 = true; this.advance2 = true; } private UnionExpr(UnionExpr other) : base(other) { this.qy1 = Clone(other.qy1); this.qy2 = Clone(other.qy2); this.advance1 = other.advance1; this.advance2 = other.advance2; this.currentNode = Clone(other.currentNode); this.nextNode = Clone(other.nextNode); } public override void Reset() { qy1.Reset(); qy2.Reset(); advance1 = true; advance2 = true; nextNode = null; } public override void SetXsltContext(XsltContext xsltContext) { qy1.SetXsltContext(xsltContext); qy2.SetXsltContext(xsltContext); } public override object Evaluate(XPathNodeIterator context) { qy1.Evaluate(context); qy2.Evaluate(context); advance1 = true; advance2 = true; nextNode = null; base.ResetCount(); return this; } private XPathNavigator ProcessSamePosition(XPathNavigator result){ currentNode = result; advance1 = advance2 = true; return result; } private XPathNavigator ProcessBeforePosition(XPathNavigator res1, XPathNavigator res2){ nextNode = res2; advance2 = false; advance1 = true; currentNode = res1; return res1; } private XPathNavigator ProcessAfterPosition(XPathNavigator res1, XPathNavigator res2){ nextNode = res1; advance1 = false; advance2 = true; currentNode = res2; return res2; } public override XPathNavigator Advance() { XPathNavigator res1, res2; XmlNodeOrder order = 0; if (advance1) { res1 = qy1.Advance(); } else { res1 = nextNode; } if (advance2) { res2 = qy2.Advance(); } else { res2 = nextNode; } if (res1 != null && res2 != null) { order = CompareNodes(res1, res2); } else if (res2 == null) { advance1 = true; advance2 = false; currentNode = res1; nextNode = null; return res1; } else { advance1 = false; advance2 = true; currentNode = res2; nextNode = null; return res2; } if (order == XmlNodeOrder.Before) { return ProcessBeforePosition(res1, res2); } else if (order == XmlNodeOrder.After) { return ProcessAfterPosition(res1, res2); } else { // BugBug. In case of Unknown we sorting as the same. return ProcessSamePosition(res1); } } public override XPathNavigator MatchNode(XPathNavigator xsltContext) { if (xsltContext != null) { XPathNavigator result = qy1.MatchNode(xsltContext); if (result != null) { return result; } return qy2.MatchNode(xsltContext); } return null; } public override XPathResultType StaticType { get { return XPathResultType.NodeSet; } } public override XPathNodeIterator Clone() { return new UnionExpr(this); } public override XPathNavigator Current { get { return currentNode; } } public override int CurrentPosition { get { throw new InvalidOperationException(); } } public override void PrintQuery(XmlWriter w) { w.WriteStartElement(this.GetType().Name); if (qy1 != null) { qy1.PrintQuery(w); } if (qy2 != null) { qy2.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.XPath; using System.Diagnostics; using System.Xml.Xsl; internal sealed class UnionExpr : Query { internal Query qy1, qy2; private bool advance1, advance2; private XPathNavigator currentNode; private XPathNavigator nextNode; public UnionExpr(Query query1, Query query2) { this.qy1 = query1; this.qy2 = query2; this.advance1 = true; this.advance2 = true; } private UnionExpr(UnionExpr other) : base(other) { this.qy1 = Clone(other.qy1); this.qy2 = Clone(other.qy2); this.advance1 = other.advance1; this.advance2 = other.advance2; this.currentNode = Clone(other.currentNode); this.nextNode = Clone(other.nextNode); } public override void Reset() { qy1.Reset(); qy2.Reset(); advance1 = true; advance2 = true; nextNode = null; } public override void SetXsltContext(XsltContext xsltContext) { qy1.SetXsltContext(xsltContext); qy2.SetXsltContext(xsltContext); } public override object Evaluate(XPathNodeIterator context) { qy1.Evaluate(context); qy2.Evaluate(context); advance1 = true; advance2 = true; nextNode = null; base.ResetCount(); return this; } private XPathNavigator ProcessSamePosition(XPathNavigator result){ currentNode = result; advance1 = advance2 = true; return result; } private XPathNavigator ProcessBeforePosition(XPathNavigator res1, XPathNavigator res2){ nextNode = res2; advance2 = false; advance1 = true; currentNode = res1; return res1; } private XPathNavigator ProcessAfterPosition(XPathNavigator res1, XPathNavigator res2){ nextNode = res1; advance1 = false; advance2 = true; currentNode = res2; return res2; } public override XPathNavigator Advance() { XPathNavigator res1, res2; XmlNodeOrder order = 0; if (advance1) { res1 = qy1.Advance(); } else { res1 = nextNode; } if (advance2) { res2 = qy2.Advance(); } else { res2 = nextNode; } if (res1 != null && res2 != null) { order = CompareNodes(res1, res2); } else if (res2 == null) { advance1 = true; advance2 = false; currentNode = res1; nextNode = null; return res1; } else { advance1 = false; advance2 = true; currentNode = res2; nextNode = null; return res2; } if (order == XmlNodeOrder.Before) { return ProcessBeforePosition(res1, res2); } else if (order == XmlNodeOrder.After) { return ProcessAfterPosition(res1, res2); } else { // BugBug. In case of Unknown we sorting as the same. return ProcessSamePosition(res1); } } public override XPathNavigator MatchNode(XPathNavigator xsltContext) { if (xsltContext != null) { XPathNavigator result = qy1.MatchNode(xsltContext); if (result != null) { return result; } return qy2.MatchNode(xsltContext); } return null; } public override XPathResultType StaticType { get { return XPathResultType.NodeSet; } } public override XPathNodeIterator Clone() { return new UnionExpr(this); } public override XPathNavigator Current { get { return currentNode; } } public override int CurrentPosition { get { throw new InvalidOperationException(); } } public override void PrintQuery(XmlWriter w) { w.WriteStartElement(this.GetType().Name); if (qy1 != null) { qy1.PrintQuery(w); } if (qy2 != null) { qy2.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
- DefaultTraceListener.cs
- CompilerGeneratedAttribute.cs
- MessageBox.cs
- PtsContext.cs
- XsdBuilder.cs
- DynamicUpdateCommand.cs
- CryptoHandle.cs
- securitycriticaldataClass.cs
- RemotingHelper.cs
- SQLCharsStorage.cs
- SettingsProviderCollection.cs
- SecurityException.cs
- Trigger.cs
- ManualWorkflowSchedulerService.cs
- DoubleAnimationClockResource.cs
- ManualResetEventSlim.cs
- ContentFileHelper.cs
- StateMachine.cs
- TransformGroup.cs
- FixedSOMTextRun.cs
- TdsRecordBufferSetter.cs
- TraceSwitch.cs
- XmlValidatingReader.cs
- ProtectedConfigurationSection.cs
- EncryptedPackageFilter.cs
- UiaCoreProviderApi.cs
- ErrorEventArgs.cs
- DbParameterHelper.cs
- DateTimeConverter.cs
- ReferencedAssembly.cs
- HostedTransportConfigurationManager.cs
- RequestQueryProcessor.cs
- ChannelSinkStacks.cs
- NumberFormatInfo.cs
- shaper.cs
- XMLSyntaxException.cs
- DocumentViewerHelper.cs
- ValueSerializerAttribute.cs
- InkCanvasInnerCanvas.cs
- SerialPort.cs
- OrderedEnumerableRowCollection.cs
- AddingNewEventArgs.cs
- PersianCalendar.cs
- XmlSchemaObjectCollection.cs
- TraceLevelStore.cs
- Tokenizer.cs
- MsmqIntegrationSecurityMode.cs
- XmlSchemaAttributeGroup.cs
- IgnoreDeviceFilterElement.cs
- TextTabProperties.cs
- CompositeCollectionView.cs
- UIElementAutomationPeer.cs
- ManagedFilter.cs
- UniqueConstraint.cs
- _KerberosClient.cs
- TraceHandler.cs
- UserControlDesigner.cs
- XPathDocumentBuilder.cs
- Util.cs
- MimeTextImporter.cs
- ButtonBaseDesigner.cs
- CharStorage.cs
- VarRefManager.cs
- ScaleTransform.cs
- EncoderParameter.cs
- XmlReflectionImporter.cs
- PrinterSettings.cs
- StringAnimationBase.cs
- UserControl.cs
- LinearQuaternionKeyFrame.cs
- DateTimeValueSerializer.cs
- TextElementCollection.cs
- LogicalTreeHelper.cs
- HostExecutionContextManager.cs
- GeometryModel3D.cs
- path.cs
- IApplicationTrustManager.cs
- OletxEnlistment.cs
- DebugView.cs
- sitestring.cs
- Color.cs
- SqlCharStream.cs
- RandomNumberGenerator.cs
- CollectionDataContract.cs
- FullTextState.cs
- IPHostEntry.cs
- ListViewGroup.cs
- TextDecoration.cs
- EdmConstants.cs
- FamilyTypefaceCollection.cs
- Transform3DGroup.cs
- TextReader.cs
- DataObjectMethodAttribute.cs
- BuiltInPermissionSets.cs
- OrthographicCamera.cs
- BrowserCapabilitiesCodeGenerator.cs
- UnicastIPAddressInformationCollection.cs
- WebEncodingValidator.cs
- Model3DGroup.cs
- XhtmlBasicValidationSummaryAdapter.cs