Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / ndp / fx / src / DataEntity / System / Data / Map / ViewGeneration / Structures / JoinTreeSlot.cs / 2 / JoinTreeSlot.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Collections.Generic; using System.Text; using System.Diagnostics; using System.Data.Common.Utils; using System.Data.Metadata.Edm; using System.Data.Mapping.ViewGeneration.CqlGeneration; using System.Data.Mapping.ViewGeneration.Utils; namespace System.Data.Mapping.ViewGeneration.Structures { // A wrapper around JoinTreeNode that allows nodes to be stored as // ProjectedSlots internal class JoinTreeSlot : ProjectedSlot { #region Constructor // effects: Creates a projected slot that references the relevant // jointree node (i.e., internal JoinTreeSlot(JoinTreeNode node) { m_node = node; } #endregion #region Fields // A comparer object for comparing jointree slots by MemberPaths internal static readonly IEqualityComparerSpecificEqualityComparer = new JoinTreeSlotEqualityComparer(); private JoinTreeNode m_node; // The node that the var corresponds to #endregion #region Properties // effects: Returns the join tree node corresponding to this variable internal JoinTreeNode JoinTreeNode { get { return m_node; } } // effects: Returns the full metadata path from the root extent to // this node, e.g., Person.Adrs.zip internal MemberPath MemberPath { get { return m_node.MemberPath; } } #endregion #region Methods internal override StringBuilder AsCql(StringBuilder builder, MemberPath outputMember, string blockAlias, int indentLevel) { // Note: One might be tempted to use the Debug.Assert below; but // it is wrong: for query views, path is in SSpace and slotType // is in CSpace since you are going from SSpace to CSpace // Debug.Assert(MemberPath.MemberType.Equals(slotType), "Type mismatch // of expected slot and member slot"); // MemberPath's member type must be compatible with the outputMember Type. // Mapping must have already checked for this and hence we need to assert here. // Today we can't put the debug assert since we require to access internal property // in metadata and entitymapper is using this code, and hence fails to compile. Once // the entitymapper code is fixed to use the API's we can put this assert back // CHANEG_[....]_ // If memberpath's type and the outputmember type do not match, // we have to cast. We assume that the mapping loader has already // checked that the casts are ok and emitted warnings TypeUsage memberPathStoreTypeUsage = Helper.GetModelTypeUsage(MemberPath.LastMember); TypeUsage outputMemberStoreTypeUsage = Helper.GetModelTypeUsage(outputMember.LastMember); if (false == memberPathStoreTypeUsage.EdmType.Equals(outputMemberStoreTypeUsage.EdmType)) { builder.Append("CAST("); MemberPath.AsCql(builder, blockAlias); builder.Append(" AS "); CqlWriter.AppendEscapedTypeName(builder, outputMemberStoreTypeUsage.EdmType); builder.Append(')'); } else { MemberPath.AsCql(builder, blockAlias); } return builder; } // effects: Given a slot and the new mapping, returns the // corresponding new slot internal override ProjectedSlot RemapSlot(Dictionary remap) { JoinTreeNode remappedNode = remap[JoinTreeNode]; return new JoinTreeSlot(remappedNode); } internal override void ToCompactString(StringBuilder builder) { m_node.ToCompactString(builder); } internal string ToUserString() { return m_node.MemberPath.PathToString(false); } protected override bool IsEqualTo(ProjectedSlot right) { JoinTreeSlot rightSlot = right as JoinTreeSlot; if (rightSlot == null) { return false; } // We want equality of the paths return MemberPath.EqualityComparer.Equals(m_node.MemberPath, rightSlot.m_node.MemberPath); } protected override int GetHash() { return MemberPath.EqualityComparer.GetHashCode(m_node.MemberPath); } #endregion #region Helper methods // requires: prefix corresponds to an entity set or an association end // effects: Given the prefix, determines the slots in "slots" // that correspond to the entity key for the entity set or the // association set end. Returns the list of slots. Returns null if // even one of the key slots is not present in slots internal static List GetKeySlots(IEnumerable slots, MemberPath prefix) { // Get the entity type of the hosted end or entity set EntitySet entitySet = prefix.EntitySet; List keys = ExtentKey.GetKeysForEntityType(prefix, entitySet.ElementType); Debug.Assert(keys.Count > 0, "No keys for entity?"); Debug.Assert(keys.Count == 1, "Currently, we only support primary keys"); // Get the slots for the key List keySlots = GetSlots(slots, keys[0].KeyFields); return keySlots; } // effects: Searches for members in slots and returns the // corresponding slots in the same order as present in // members. Returns null if even one member is not present in slots internal static List GetSlots(IEnumerable slots, IEnumerable members) { List result = new List (); foreach (MemberPath member in members) { JoinTreeSlot slot = GetSlotForMember(Helpers.AsSuperTypeList (slots), member); if (slot == null) { return null; } result.Add(slot); } return result; } // effects: Searches for member in slots and returns the corresponding slot // If none is found, returns null internal static JoinTreeSlot GetSlotForMember(IEnumerable slots, MemberPath member) { foreach (JoinTreeSlot slot in slots) { if (MemberPath.EqualityComparer.Equals(slot.MemberPath, member)) { return slot; } } return null; } #endregion #region JoinTreeSlot Comparer classes // summary: Two JoinTreeSlots are equal when their MemberPaths are equal (JoinTreeSlot.IsEqualTo returns true) internal class JoinTreeSlotEqualityComparer : IEqualityComparer { // effects: Returns true if left and right are semantically equivalent public bool Equals(JoinTreeSlot left, JoinTreeSlot right) { return ProjectedSlot.EqualityComparer.Equals(left, right); } public int GetHashCode(JoinTreeSlot key) { return ProjectedSlot.EqualityComparer.GetHashCode(key); } } #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Collections.Generic; using System.Text; using System.Diagnostics; using System.Data.Common.Utils; using System.Data.Metadata.Edm; using System.Data.Mapping.ViewGeneration.CqlGeneration; using System.Data.Mapping.ViewGeneration.Utils; namespace System.Data.Mapping.ViewGeneration.Structures { // A wrapper around JoinTreeNode that allows nodes to be stored as // ProjectedSlots internal class JoinTreeSlot : ProjectedSlot { #region Constructor // effects: Creates a projected slot that references the relevant // jointree node (i.e., internal JoinTreeSlot(JoinTreeNode node) { m_node = node; } #endregion #region Fields // A comparer object for comparing jointree slots by MemberPaths internal static readonly IEqualityComparerSpecificEqualityComparer = new JoinTreeSlotEqualityComparer(); private JoinTreeNode m_node; // The node that the var corresponds to #endregion #region Properties // effects: Returns the join tree node corresponding to this variable internal JoinTreeNode JoinTreeNode { get { return m_node; } } // effects: Returns the full metadata path from the root extent to // this node, e.g., Person.Adrs.zip internal MemberPath MemberPath { get { return m_node.MemberPath; } } #endregion #region Methods internal override StringBuilder AsCql(StringBuilder builder, MemberPath outputMember, string blockAlias, int indentLevel) { // Note: One might be tempted to use the Debug.Assert below; but // it is wrong: for query views, path is in SSpace and slotType // is in CSpace since you are going from SSpace to CSpace // Debug.Assert(MemberPath.MemberType.Equals(slotType), "Type mismatch // of expected slot and member slot"); // MemberPath's member type must be compatible with the outputMember Type. // Mapping must have already checked for this and hence we need to assert here. // Today we can't put the debug assert since we require to access internal property // in metadata and entitymapper is using this code, and hence fails to compile. Once // the entitymapper code is fixed to use the API's we can put this assert back // CHANEG_[....]_ // If memberpath's type and the outputmember type do not match, // we have to cast. We assume that the mapping loader has already // checked that the casts are ok and emitted warnings TypeUsage memberPathStoreTypeUsage = Helper.GetModelTypeUsage(MemberPath.LastMember); TypeUsage outputMemberStoreTypeUsage = Helper.GetModelTypeUsage(outputMember.LastMember); if (false == memberPathStoreTypeUsage.EdmType.Equals(outputMemberStoreTypeUsage.EdmType)) { builder.Append("CAST("); MemberPath.AsCql(builder, blockAlias); builder.Append(" AS "); CqlWriter.AppendEscapedTypeName(builder, outputMemberStoreTypeUsage.EdmType); builder.Append(')'); } else { MemberPath.AsCql(builder, blockAlias); } return builder; } // effects: Given a slot and the new mapping, returns the // corresponding new slot internal override ProjectedSlot RemapSlot(Dictionary remap) { JoinTreeNode remappedNode = remap[JoinTreeNode]; return new JoinTreeSlot(remappedNode); } internal override void ToCompactString(StringBuilder builder) { m_node.ToCompactString(builder); } internal string ToUserString() { return m_node.MemberPath.PathToString(false); } protected override bool IsEqualTo(ProjectedSlot right) { JoinTreeSlot rightSlot = right as JoinTreeSlot; if (rightSlot == null) { return false; } // We want equality of the paths return MemberPath.EqualityComparer.Equals(m_node.MemberPath, rightSlot.m_node.MemberPath); } protected override int GetHash() { return MemberPath.EqualityComparer.GetHashCode(m_node.MemberPath); } #endregion #region Helper methods // requires: prefix corresponds to an entity set or an association end // effects: Given the prefix, determines the slots in "slots" // that correspond to the entity key for the entity set or the // association set end. Returns the list of slots. Returns null if // even one of the key slots is not present in slots internal static List GetKeySlots(IEnumerable slots, MemberPath prefix) { // Get the entity type of the hosted end or entity set EntitySet entitySet = prefix.EntitySet; List keys = ExtentKey.GetKeysForEntityType(prefix, entitySet.ElementType); Debug.Assert(keys.Count > 0, "No keys for entity?"); Debug.Assert(keys.Count == 1, "Currently, we only support primary keys"); // Get the slots for the key List keySlots = GetSlots(slots, keys[0].KeyFields); return keySlots; } // effects: Searches for members in slots and returns the // corresponding slots in the same order as present in // members. Returns null if even one member is not present in slots internal static List GetSlots(IEnumerable slots, IEnumerable members) { List result = new List (); foreach (MemberPath member in members) { JoinTreeSlot slot = GetSlotForMember(Helpers.AsSuperTypeList (slots), member); if (slot == null) { return null; } result.Add(slot); } return result; } // effects: Searches for member in slots and returns the corresponding slot // If none is found, returns null internal static JoinTreeSlot GetSlotForMember(IEnumerable slots, MemberPath member) { foreach (JoinTreeSlot slot in slots) { if (MemberPath.EqualityComparer.Equals(slot.MemberPath, member)) { return slot; } } return null; } #endregion #region JoinTreeSlot Comparer classes // summary: Two JoinTreeSlots are equal when their MemberPaths are equal (JoinTreeSlot.IsEqualTo returns true) internal class JoinTreeSlotEqualityComparer : IEqualityComparer { // effects: Returns true if left and right are semantically equivalent public bool Equals(JoinTreeSlot left, JoinTreeSlot right) { return ProjectedSlot.EqualityComparer.Equals(left, right); } public int GetHashCode(JoinTreeSlot key) { return ProjectedSlot.EqualityComparer.GetHashCode(key); } } #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
- EditorPart.cs
- BamlCollectionHolder.cs
- ParameterElementCollection.cs
- ByteRangeDownloader.cs
- HttpsHostedTransportConfiguration.cs
- SynchronousChannel.cs
- Odbc32.cs
- NativeCompoundFileAPIs.cs
- ListViewHitTestInfo.cs
- FrugalList.cs
- DiscoveryMessageSequence11.cs
- XmlSchemaIdentityConstraint.cs
- UIEndRequest.cs
- ClientWindowsAuthenticationMembershipProvider.cs
- RealizationContext.cs
- SystemWebExtensionsSectionGroup.cs
- CompositeScriptReference.cs
- FixedSOMLineRanges.cs
- TriggerAction.cs
- SecondaryIndexList.cs
- CorrelationHandle.cs
- ControlBindingsCollection.cs
- EventLogTraceListener.cs
- CorruptingExceptionCommon.cs
- JapaneseCalendar.cs
- ActivityMarkupSerializer.cs
- ImageListStreamer.cs
- ThaiBuddhistCalendar.cs
- Padding.cs
- ValidationSummary.cs
- Separator.cs
- InvalidPropValue.cs
- AttachedPropertyBrowsableAttribute.cs
- WebPartConnectionsConnectVerb.cs
- DrawListViewItemEventArgs.cs
- CharEnumerator.cs
- ZoomComboBox.cs
- DrawingImage.cs
- TableAutomationPeer.cs
- OracleRowUpdatedEventArgs.cs
- ButtonBaseAdapter.cs
- GroupQuery.cs
- XamlTemplateSerializer.cs
- Vector3D.cs
- CursorInteropHelper.cs
- xmlfixedPageInfo.cs
- IPeerNeighbor.cs
- WebHttpBindingElement.cs
- SchemaMerger.cs
- SmiEventSink.cs
- Geometry.cs
- ListComponentEditor.cs
- httpstaticobjectscollection.cs
- XmlUTF8TextWriter.cs
- MarkupCompilePass2.cs
- XmlILAnnotation.cs
- ApplicationCommands.cs
- CodeCommentStatement.cs
- PartitionerStatic.cs
- SQLDouble.cs
- ProfileSettings.cs
- RowsCopiedEventArgs.cs
- DbReferenceCollection.cs
- WindowsListBox.cs
- DataMemberAttribute.cs
- safelink.cs
- SafeCryptoHandles.cs
- TextTreeText.cs
- BreakRecordTable.cs
- URLIdentityPermission.cs
- HttpResponseInternalBase.cs
- HostedElements.cs
- FrameworkContentElementAutomationPeer.cs
- WebSysDefaultValueAttribute.cs
- KeyInstance.cs
- CodeDOMProvider.cs
- EventLogPermission.cs
- DbSourceParameterCollection.cs
- RelationshipConverter.cs
- Point3DValueSerializer.cs
- AssertHelper.cs
- ExceptionHandler.cs
- ListMarkerSourceInfo.cs
- ToolStripLocationCancelEventArgs.cs
- ApplicationHost.cs
- CngAlgorithmGroup.cs
- _StreamFramer.cs
- SupportsEventValidationAttribute.cs
- CfgParser.cs
- HttpCookie.cs
- securestring.cs
- OptimizerPatterns.cs
- GroupedContextMenuStrip.cs
- DbBuffer.cs
- ResourceBinder.cs
- _LocalDataStoreMgr.cs
- XmlSerializableServices.cs
- FormatterConverter.cs
- AncestorChangedEventArgs.cs
- PolicyReader.cs