Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / ndp / fx / src / DataEntity / System / Data / Map / ViewGeneration / Structures / CellTreeNode.cs / 2 / CellTreeNode.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Data.Common.Utils; using System.Data.Common.Utils.Boolean; using System.Collections.Generic; using System.Text; using System.Data.Mapping.ViewGeneration.CqlGeneration; using System.Data.Mapping.ViewGeneration.QueryRewriting; using System.Data.Mapping.ViewGeneration.Utils; namespace System.Data.Mapping.ViewGeneration.Structures { using WrapperBoolExpr = BoolExpr; using System.Data.Entity; // This class represents a node in the update or query mapping view tree // (of course, the root node represents the full view) // Each node represents an expression of the form: // SELECT FROM WHERE // The WHERE clause is of the form X1 OR X2 OR ... where each Xi is a multiconstant internal abstract partial class CellTreeNode : InternalBase { #region Constructor // effects: Creates a cell tree node with a reference to projectedSlotMap for // deciphering the fields in this protected CellTreeNode(CellNormalizer normalizer) { m_normalizer = normalizer; } // effects: returns a copy of the tree below node internal CellTreeNode MakeCopy() { DefaultCellTreeVisitor visitor = new DefaultCellTreeVisitor (); CellTreeNode result = Accept (visitor, true); return result; } #endregion #region Fields private CellNormalizer m_normalizer; #endregion #region Properties // effects: Returns the operation being performed by this node internal abstract CellTreeOpType OpType { get; } // effects: Returns the right domain map associated with this celltreenode internal abstract MemberDomainMap RightDomainMap { get; } internal abstract FragmentQuery LeftFragmentQuery { get; } internal abstract FragmentQuery RightFragmentQuery { get; } internal bool IsEmptyRightFragmentQuery { get { return !m_normalizer.RightFragmentQP.IsSatisfiable(RightFragmentQuery); } } // effects: Returns the attributes available/projected from this node internal abstract Set Attributes { get; } // effects: Returns the children of this node internal abstract List Children { get; } // effects: Returns the number of slots projected from this node internal abstract int NumProjectedSlots { get;} // effects: Returns the number of boolean slots in this node internal abstract int NumBoolSlots { get;} internal MemberPathMapBase ProjectedSlotMap { get { return m_normalizer.MemberMaps.ProjectedSlotMap; } } internal CellNormalizer CellNormalizer { get { return m_normalizer; } } #endregion #region Abstract Methods // effects: Given a leaf cell node and the slots required by the parent, returns // a CqlBlock corresponding to the tree rooted at this internal abstract CqlBlock ToCqlBlock(bool[] requiredSlots, CqlIdentifiers identifiers, ref int blockAliasNum, ref List withStatements); // Effects: Returns true if slot at slot number "slot" is projected // by some node in tree rooted at this internal abstract bool IsProjectedSlot(int slot); // Standard accept method for visitor pattern. TOutput is the return // type for visitor methods. internal abstract TOutput Accept (CellTreeVisitor visitor, TInput param); internal abstract TOutput Accept (SimpleCellTreeVisitor visitor, TInput param); #endregion #region Visitor methods // effects: Given a cell tree node , removes unnecessary // "nesting" that occurs in the tree -- an unnecessary nesting // occurs when a node has exactly one child. internal CellTreeNode Flatten() { return FlatteningVisitor.Flatten(this); } // effects: Gets all the leaves in this internal List GetLeaves() { return LeafVisitor.GetLeaves(this); } // effects: Like Flatten, flattens the tree and then collapses // associative operators, e.g., (A IJ B) IJ C is changed to A IJ B IJ C internal CellTreeNode AssociativeFlatten() { return AssociativeOpFlatteningVisitor.Flatten(this); } #endregion #region Helper methods, e.g., for slots and strings // effects: Returns true iff the Op (e.g., IJ) is associative, i.e., // A OP (B OP C) is the same as (A OP B) OP C or A OP B OP C internal static bool IsAssociativeOp(CellTreeOpType opType) { // This is not true for LOJ and LASJ return opType == CellTreeOpType.IJ || opType == CellTreeOpType.Union || opType == CellTreeOpType.FOJ; } // effects: Returns an array of booleans where bool[i] is set to true // iff some node in the tree rooted at node projects that slot internal bool[] GetProjectedSlots() { // Gets the information on the normal and the boolean slots int totalSlots = ProjectedSlotMap.Count + NumBoolSlots; bool[] slots = new bool[totalSlots]; for (int i = 0; i < totalSlots; i++) { slots[i] = IsProjectedSlot(i); } return slots; } // effects: Given a slot number, slotNum, returns the output member path // that this slot contributes/corresponds to in the extent view. If // the slot corresponds to one of the boolean variables, returns null protected MemberPath GetMemberPath(int slotNum) { return ProjectedSlot.GetMemberPath(slotNum, ProjectedSlotMap, NumBoolSlots); } // effects: Given the index of a boolean variable (e.g., of from1), // returns the slot number for that boolean in this protected int BoolIndexToSlot(int boolIndex) { // Booleans appear after the regular slot return ProjectedSlot.BoolIndexToSlot(boolIndex, ProjectedSlotMap, NumBoolSlots); } // effects: Given a slotNum corresponding to a boolean slot, returns // the cel number that the cell corresponds to protected int SlotToBoolIndex(int slotNum) { return ProjectedSlot.SlotToBoolIndex(slotNum, ProjectedSlotMap, NumBoolSlots); } // effects: Returns true if slotNum corresponds to a key slot in the // output extent view protected bool IsKeySlot(int slotNum) { return ProjectedSlot.IsKeySlot(slotNum, ProjectedSlotMap, NumBoolSlots); } // effects: Returns true if slotNum corresponds to a bool slot and // not a regular field protected bool IsBoolSlot(int slotNum) { return ProjectedSlot.IsBoolSlot(slotNum, ProjectedSlotMap, NumBoolSlots); } // effects: Returns the slot numbers corresponding to the key fields // in the m_projectedSlotMap protected IEnumerable KeySlots { get { int numMembers = ProjectedSlotMap.Count; for (int slotNum = 0; slotNum < numMembers; slotNum++) { if (true == IsKeySlot(slotNum)) { yield return slotNum; } } } } // effects: Modifies builder to contain a Cql query corresponding to // the tree rooted at this internal override void ToFullString(StringBuilder builder) { int blockAliasNum = 0; // Get the required slots, get the block and then get the string bool[] requiredSlots = GetProjectedSlots(); // Using empty identifiers over here since we do not use this for the actual CqlGeneration CqlIdentifiers identifiers = new CqlIdentifiers(); List withStatements = new List (); CqlBlock block = ToCqlBlock(requiredSlots, identifiers, ref blockAliasNum, ref withStatements); block.AsCql(builder, false, 1); } #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Data.Common.Utils; using System.Data.Common.Utils.Boolean; using System.Collections.Generic; using System.Text; using System.Data.Mapping.ViewGeneration.CqlGeneration; using System.Data.Mapping.ViewGeneration.QueryRewriting; using System.Data.Mapping.ViewGeneration.Utils; namespace System.Data.Mapping.ViewGeneration.Structures { using WrapperBoolExpr = BoolExpr; using System.Data.Entity; // This class represents a node in the update or query mapping view tree // (of course, the root node represents the full view) // Each node represents an expression of the form: // SELECT FROM WHERE // The WHERE clause is of the form X1 OR X2 OR ... where each Xi is a multiconstant internal abstract partial class CellTreeNode : InternalBase { #region Constructor // effects: Creates a cell tree node with a reference to projectedSlotMap for // deciphering the fields in this protected CellTreeNode(CellNormalizer normalizer) { m_normalizer = normalizer; } // effects: returns a copy of the tree below node internal CellTreeNode MakeCopy() { DefaultCellTreeVisitor visitor = new DefaultCellTreeVisitor (); CellTreeNode result = Accept (visitor, true); return result; } #endregion #region Fields private CellNormalizer m_normalizer; #endregion #region Properties // effects: Returns the operation being performed by this node internal abstract CellTreeOpType OpType { get; } // effects: Returns the right domain map associated with this celltreenode internal abstract MemberDomainMap RightDomainMap { get; } internal abstract FragmentQuery LeftFragmentQuery { get; } internal abstract FragmentQuery RightFragmentQuery { get; } internal bool IsEmptyRightFragmentQuery { get { return !m_normalizer.RightFragmentQP.IsSatisfiable(RightFragmentQuery); } } // effects: Returns the attributes available/projected from this node internal abstract Set Attributes { get; } // effects: Returns the children of this node internal abstract List Children { get; } // effects: Returns the number of slots projected from this node internal abstract int NumProjectedSlots { get;} // effects: Returns the number of boolean slots in this node internal abstract int NumBoolSlots { get;} internal MemberPathMapBase ProjectedSlotMap { get { return m_normalizer.MemberMaps.ProjectedSlotMap; } } internal CellNormalizer CellNormalizer { get { return m_normalizer; } } #endregion #region Abstract Methods // effects: Given a leaf cell node and the slots required by the parent, returns // a CqlBlock corresponding to the tree rooted at this internal abstract CqlBlock ToCqlBlock(bool[] requiredSlots, CqlIdentifiers identifiers, ref int blockAliasNum, ref List withStatements); // Effects: Returns true if slot at slot number "slot" is projected // by some node in tree rooted at this internal abstract bool IsProjectedSlot(int slot); // Standard accept method for visitor pattern. TOutput is the return // type for visitor methods. internal abstract TOutput Accept (CellTreeVisitor visitor, TInput param); internal abstract TOutput Accept (SimpleCellTreeVisitor visitor, TInput param); #endregion #region Visitor methods // effects: Given a cell tree node , removes unnecessary // "nesting" that occurs in the tree -- an unnecessary nesting // occurs when a node has exactly one child. internal CellTreeNode Flatten() { return FlatteningVisitor.Flatten(this); } // effects: Gets all the leaves in this internal List GetLeaves() { return LeafVisitor.GetLeaves(this); } // effects: Like Flatten, flattens the tree and then collapses // associative operators, e.g., (A IJ B) IJ C is changed to A IJ B IJ C internal CellTreeNode AssociativeFlatten() { return AssociativeOpFlatteningVisitor.Flatten(this); } #endregion #region Helper methods, e.g., for slots and strings // effects: Returns true iff the Op (e.g., IJ) is associative, i.e., // A OP (B OP C) is the same as (A OP B) OP C or A OP B OP C internal static bool IsAssociativeOp(CellTreeOpType opType) { // This is not true for LOJ and LASJ return opType == CellTreeOpType.IJ || opType == CellTreeOpType.Union || opType == CellTreeOpType.FOJ; } // effects: Returns an array of booleans where bool[i] is set to true // iff some node in the tree rooted at node projects that slot internal bool[] GetProjectedSlots() { // Gets the information on the normal and the boolean slots int totalSlots = ProjectedSlotMap.Count + NumBoolSlots; bool[] slots = new bool[totalSlots]; for (int i = 0; i < totalSlots; i++) { slots[i] = IsProjectedSlot(i); } return slots; } // effects: Given a slot number, slotNum, returns the output member path // that this slot contributes/corresponds to in the extent view. If // the slot corresponds to one of the boolean variables, returns null protected MemberPath GetMemberPath(int slotNum) { return ProjectedSlot.GetMemberPath(slotNum, ProjectedSlotMap, NumBoolSlots); } // effects: Given the index of a boolean variable (e.g., of from1), // returns the slot number for that boolean in this protected int BoolIndexToSlot(int boolIndex) { // Booleans appear after the regular slot return ProjectedSlot.BoolIndexToSlot(boolIndex, ProjectedSlotMap, NumBoolSlots); } // effects: Given a slotNum corresponding to a boolean slot, returns // the cel number that the cell corresponds to protected int SlotToBoolIndex(int slotNum) { return ProjectedSlot.SlotToBoolIndex(slotNum, ProjectedSlotMap, NumBoolSlots); } // effects: Returns true if slotNum corresponds to a key slot in the // output extent view protected bool IsKeySlot(int slotNum) { return ProjectedSlot.IsKeySlot(slotNum, ProjectedSlotMap, NumBoolSlots); } // effects: Returns true if slotNum corresponds to a bool slot and // not a regular field protected bool IsBoolSlot(int slotNum) { return ProjectedSlot.IsBoolSlot(slotNum, ProjectedSlotMap, NumBoolSlots); } // effects: Returns the slot numbers corresponding to the key fields // in the m_projectedSlotMap protected IEnumerable KeySlots { get { int numMembers = ProjectedSlotMap.Count; for (int slotNum = 0; slotNum < numMembers; slotNum++) { if (true == IsKeySlot(slotNum)) { yield return slotNum; } } } } // effects: Modifies builder to contain a Cql query corresponding to // the tree rooted at this internal override void ToFullString(StringBuilder builder) { int blockAliasNum = 0; // Get the required slots, get the block and then get the string bool[] requiredSlots = GetProjectedSlots(); // Using empty identifiers over here since we do not use this for the actual CqlGeneration CqlIdentifiers identifiers = new CqlIdentifiers(); List withStatements = new List (); CqlBlock block = ToCqlBlock(requiredSlots, identifiers, ref blockAliasNum, ref withStatements); block.AsCql(builder, false, 1); } #endregion } } // 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
- InputMethod.cs
- MouseWheelEventArgs.cs
- safex509handles.cs
- BasicCellRelation.cs
- ToolboxItemCollection.cs
- TextWriter.cs
- dsa.cs
- ControllableStoryboardAction.cs
- DesignerResources.cs
- WsatTransactionInfo.cs
- XamlFilter.cs
- Reference.cs
- OuterGlowBitmapEffect.cs
- FixedTextSelectionProcessor.cs
- SafeNativeMethods.cs
- BufferedWebEventProvider.cs
- PerfCounterSection.cs
- RegionInfo.cs
- InputScopeAttribute.cs
- WebPartMinimizeVerb.cs
- CroppedBitmap.cs
- RoleGroup.cs
- Typeface.cs
- EmbeddedMailObjectCollectionEditor.cs
- metadatamappinghashervisitor.hashsourcebuilder.cs
- TableLayoutPanelCellPosition.cs
- ReachIDocumentPaginatorSerializer.cs
- EqualityArray.cs
- PropertyValueUIItem.cs
- ToolStripSystemRenderer.cs
- TextRangeEditTables.cs
- SafeHandle.cs
- SerializationSectionGroup.cs
- Polyline.cs
- DeclaredTypeValidator.cs
- PrivilegeNotHeldException.cs
- AutoScrollHelper.cs
- HTTPNotFoundHandler.cs
- SerializationInfo.cs
- AssemblyBuilder.cs
- ItemCollection.cs
- UmAlQuraCalendar.cs
- PageRanges.cs
- ToolboxBitmapAttribute.cs
- _ContextAwareResult.cs
- Part.cs
- CheckBoxField.cs
- SByteStorage.cs
- XmlArrayItemAttribute.cs
- Int32KeyFrameCollection.cs
- SettingsAttributes.cs
- VisualStyleElement.cs
- HttpCacheVary.cs
- ShaderRenderModeValidation.cs
- MailDefinition.cs
- DuplexChannel.cs
- ValidationPropertyAttribute.cs
- HTMLTagNameToTypeMapper.cs
- RoutedEventHandlerInfo.cs
- DecimalConstantAttribute.cs
- CollectionExtensions.cs
- ColorConvertedBitmap.cs
- StringKeyFrameCollection.cs
- HttpContextServiceHost.cs
- LinearKeyFrames.cs
- Process.cs
- StrokeIntersection.cs
- _SslSessionsCache.cs
- Rotation3DAnimationBase.cs
- Byte.cs
- RuleEngine.cs
- DesignerImageAdapter.cs
- UserControl.cs
- SecureStringHasher.cs
- InvalidCastException.cs
- UTF7Encoding.cs
- XpsFilter.cs
- EtwTrackingBehavior.cs
- MarginsConverter.cs
- PresentationTraceSources.cs
- MergeFilterQuery.cs
- DomainUpDown.cs
- MouseDevice.cs
- WebUtil.cs
- Stack.cs
- AsyncOperation.cs
- FormConverter.cs
- MsmqIntegrationChannelListener.cs
- XPathNodeIterator.cs
- SiteMapDataSource.cs
- TypeProvider.cs
- UnauthorizedAccessException.cs
- ButtonStandardAdapter.cs
- infer.cs
- XmlSchemaRedefine.cs
- XPathNodePointer.cs
- DelegatingTypeDescriptionProvider.cs
- BigInt.cs
- DockProviderWrapper.cs
- GroupLabel.cs