Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / 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
- ListManagerBindingsCollection.cs
- PathFigure.cs
- VerificationAttribute.cs
- ToolStripDropDownDesigner.cs
- SafeProcessHandle.cs
- DataGridPagerStyle.cs
- SecurityElement.cs
- FixedTextBuilder.cs
- GridItemProviderWrapper.cs
- WebPartsPersonalization.cs
- ClientBuildManagerTypeDescriptionProviderBridge.cs
- DataGridViewTopRowAccessibleObject.cs
- TextEditorCopyPaste.cs
- __FastResourceComparer.cs
- RegistryExceptionHelper.cs
- FlowSwitch.cs
- ServiceManager.cs
- NavigationEventArgs.cs
- AssociationSetEnd.cs
- Imaging.cs
- InstanceDataCollectionCollection.cs
- TreeNodeEventArgs.cs
- FeatureSupport.cs
- PropertyCondition.cs
- TargetControlTypeCache.cs
- ConfigurationManagerHelper.cs
- TextShapeableCharacters.cs
- EFDataModelProvider.cs
- Rect3DConverter.cs
- SchemaImporter.cs
- GridViewEditEventArgs.cs
- HttpWrapper.cs
- ButtonChrome.cs
- CharacterMetrics.cs
- ToolStripSeparator.cs
- Application.cs
- RestHandler.cs
- SessionParameter.cs
- BoundsDrawingContextWalker.cs
- ContentControl.cs
- TreeNodeMouseHoverEvent.cs
- OdbcParameter.cs
- ExpressionValueEditor.cs
- BinaryFormatterSinks.cs
- ExceptionUtil.cs
- DirectoryObjectSecurity.cs
- ButtonField.cs
- PseudoWebRequest.cs
- PreviewKeyDownEventArgs.cs
- EntitySqlQueryBuilder.cs
- TimeSpanConverter.cs
- WebPartEditorOkVerb.cs
- WebPartAuthorizationEventArgs.cs
- SQLMoney.cs
- SchemaManager.cs
- XMLSchema.cs
- QueryOutputWriter.cs
- RNGCryptoServiceProvider.cs
- RecommendedAsConfigurableAttribute.cs
- EntityDataSourceWrapperCollection.cs
- GridViewRow.cs
- MailMessageEventArgs.cs
- DATA_BLOB.cs
- HwndHostAutomationPeer.cs
- AdCreatedEventArgs.cs
- BidirectionalDictionary.cs
- GB18030Encoding.cs
- MexBindingElement.cs
- TableSectionStyle.cs
- SimpleHandlerBuildProvider.cs
- ProxyWebPartConnectionCollection.cs
- DataComponentNameHandler.cs
- DataRow.cs
- Binding.cs
- PropertiesTab.cs
- DataListCommandEventArgs.cs
- GregorianCalendar.cs
- DiscreteKeyFrames.cs
- Filter.cs
- PersonalizationAdministration.cs
- ByteRangeDownloader.cs
- SqlInternalConnectionTds.cs
- TextSchema.cs
- HybridDictionary.cs
- ArcSegment.cs
- NetworkStream.cs
- FileVersion.cs
- MultipleViewPattern.cs
- ButtonPopupAdapter.cs
- StrokeDescriptor.cs
- ReadWriteObjectLock.cs
- WebServiceData.cs
- WindowExtensionMethods.cs
- MaskedTextBox.cs
- OpCellTreeNode.cs
- DocumentGrid.cs
- TextInfo.cs
- XmlIgnoreAttribute.cs
- DesignerCategoryAttribute.cs
- RootBrowserWindowAutomationPeer.cs