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 / 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
- RegexFCD.cs
- AddInPipelineAttributes.cs
- SlotInfo.cs
- ToolStripTextBox.cs
- XmlAnyElementAttributes.cs
- MarkupCompiler.cs
- VariantWrapper.cs
- ZipIOExtraFieldElement.cs
- SqlCacheDependencySection.cs
- UIElementIsland.cs
- DetailsViewUpdatedEventArgs.cs
- ToolStripItemTextRenderEventArgs.cs
- ContainerControl.cs
- Misc.cs
- EntityDataSourceEntityTypeFilterItem.cs
- PerformanceCounterPermissionEntry.cs
- CompiledQuery.cs
- SqlFacetAttribute.cs
- Parameter.cs
- DataList.cs
- BinaryObjectInfo.cs
- MetabaseSettings.cs
- File.cs
- QueryTaskGroupState.cs
- HandlerMappingMemo.cs
- BamlMapTable.cs
- VarRemapper.cs
- _RequestCacheProtocol.cs
- DocumentPage.cs
- FontFamilyConverter.cs
- WebServiceReceiveDesigner.cs
- RuleInfoComparer.cs
- ChannelSinkStacks.cs
- WmlSelectionListAdapter.cs
- PrintPreviewGraphics.cs
- DocumentViewerAutomationPeer.cs
- CustomValidator.cs
- ArgumentNullException.cs
- ProfessionalColorTable.cs
- DeviceSpecificDialogCachedState.cs
- LicenseContext.cs
- AbstractSvcMapFileLoader.cs
- AutoGeneratedFieldProperties.cs
- InkSerializer.cs
- Variant.cs
- EmbeddedObject.cs
- PersonalizationStateInfoCollection.cs
- keycontainerpermission.cs
- FrameworkTemplate.cs
- PersonalizationStateInfoCollection.cs
- ToolboxDataAttribute.cs
- ConnectionsZoneAutoFormat.cs
- MasterPageCodeDomTreeGenerator.cs
- StructuralType.cs
- BCryptNative.cs
- TextElement.cs
- OptimizedTemplateContentHelper.cs
- NegotiateStream.cs
- FixedDSBuilder.cs
- BitmapFrameDecode.cs
- SystemColorTracker.cs
- ProgressBarHighlightConverter.cs
- ImageSource.cs
- RegexCode.cs
- DataControlField.cs
- AnnotationAdorner.cs
- Brush.cs
- StreamResourceInfo.cs
- XhtmlConformanceSection.cs
- ContentType.cs
- SystemFonts.cs
- DBSchemaTable.cs
- UnknownBitmapEncoder.cs
- WebPageTraceListener.cs
- _TransmitFileOverlappedAsyncResult.cs
- PrintDialog.cs
- LinqDataSourceUpdateEventArgs.cs
- ReservationNotFoundException.cs
- TraceContext.cs
- TaskFactory.cs
- GPPOINTF.cs
- SettingsProperty.cs
- ReflectionUtil.cs
- SectionVisual.cs
- OleCmdHelper.cs
- EventLogQuery.cs
- LassoHelper.cs
- _PooledStream.cs
- XPathMessageFilter.cs
- GeometryHitTestResult.cs
- ListSourceHelper.cs
- ClientTargetSection.cs
- StyleBamlRecordReader.cs
- ObjectConverter.cs
- AttachedPropertyBrowsableAttribute.cs
- IUnknownConstantAttribute.cs
- HostingPreferredMapPath.cs
- TypeHelper.cs
- DirectionalLight.cs
- SmiGettersStream.cs