Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / ndp / fx / src / DataEntity / System / Data / Map / ViewGeneration / Validation / ViewKeyConstraint.cs / 2 / ViewKeyConstraint.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Collections.Generic; using System.Data.Mapping.ViewGeneration.Structures; using System.Data.Mapping.ViewGeneration.Utils; using System.Data.Common.Utils; using System.Text; using System.Data.Metadata.Edm; using System.Data.Entity; namespace System.Data.Mapping.ViewGeneration.Validation { // Class representing a key constraint on the view cell relations internal class ViewKeyConstraint : KeyConstraint{ #region Constructor // effects: Constructs a key constraint for the given relation and keyslots internal ViewKeyConstraint(ViewCellRelation relation, IEnumerable keySlots) : base(relation, keySlots, ViewCellSlot.SpecificEqualityComparer) { } #endregion #region Properties // effects: Returns the cell corresponding to this constraint internal Cell Cell { get { return CellRelation.Cell; } } #endregion #region Methods internal bool Implies(ViewKeyConstraint second) { if (false == Object.ReferenceEquals(CellRelation, second.CellRelation)) { return false; } // Check if the slots in this key are a subset of slots in // second. If it is a key in this e.g., then is certainly a key as well if (KeySlots.IsSubsetOf(second.KeySlots)) { return true; } // Now check for subsetting taking referential constraints into account // Check that each slot in KeySlots can be found in second.KeySlots if we take // slot equivalence into account Set secondKeySlots = new Set (second.KeySlots); foreach (ViewCellSlot firstSlot in KeySlots) { bool found = false; // Need to find a match for firstSlot foreach (ViewCellSlot secondSlot in secondKeySlots) { if (ProjectedSlot.EqualityComparer.Equals(firstSlot.SSlot, secondSlot.SSlot)) { // S-side is the same. Check if C-side is the same as well. If so, remove it // from secondKeySlots // We have to check for C-side equivalence in terms of actual equality // and equivalence via ref constraints. The former is needed since the // S-side key slots would typically be mapped to the same C-side slot. // The latter is needed since the same S-side key slot could be mapped // into two slots on the C-side that are connected via a ref constraint MemberPath path1 = firstSlot.CSlot.MemberPath; MemberPath path2 = secondSlot.CSlot.MemberPath; if (MemberPath.EqualityComparer.Equals(path1, path2) || path1.IsEquivalentViaRefConstraint(path2)) { secondKeySlots.Remove(secondSlot); found = true; break; } } } if (found == false) { return false; } } // The subsetting holds when referential constraints are taken into account return true; } // effects: Given the fact that rightKeyConstraint is not implied by a // leftSide key constraint, return a useful error message -- some S // was not implied by the C key constraints internal static ErrorLog.Record GetErrorRecord(ViewKeyConstraint rightKeyConstraint, MetadataWorkspace workspace) { List keySlots = new List (rightKeyConstraint.KeySlots); EntitySetBase table = keySlots[0].SSlot.MemberPath.Extent; EntitySetBase cSet = keySlots[0].CSlot.MemberPath.Extent; MemberPath tablePrefix = new MemberPath(table, workspace); MemberPath cSetPrefix = new MemberPath(cSet, workspace); ExtentKey tableKey = ExtentKey.GetPrimaryKeyForEntityType(tablePrefix, (EntityType) table.ElementType); ExtentKey cSetKey = null; if (cSet is EntitySet) { cSetKey = ExtentKey.GetPrimaryKeyForEntityType(cSetPrefix, (EntityType)cSet.ElementType); } else { cSetKey = ExtentKey.GetKeyForRelationType(cSetPrefix, (AssociationType)cSet.ElementType); } string message = Strings.ViewGen_KeyConstraint_Violation_5( table.Name, ViewCellSlot.SlotsToUserString(rightKeyConstraint.KeySlots, false /*isFromCside*/), tableKey.ToUserString(), cSet.Name, ViewCellSlot.SlotsToUserString(rightKeyConstraint.KeySlots, true /*isFromCside*/), cSetKey.ToUserString()); string debugMessage = StringUtil.FormatInvariant("PROBLEM: Not implied {0}", rightKeyConstraint); return new ErrorLog.Record(true, ViewGenErrorCode.KeyConstraintViolation, message, rightKeyConstraint.CellRelation.Cell, debugMessage); } // effects: Given the fact that none of the rightKeyConstraint are not implied by a // leftSide key constraint, return a useful error message (used for // the Update requirement internal static ErrorLog.Record GetErrorRecord(IEnumerable rightKeyConstraints, MetadataWorkspace workspace) { ViewKeyConstraint rightKeyConstraint = null; StringBuilder keyBuilder = new StringBuilder(); bool isFirst = true; foreach (ViewKeyConstraint rightConstraint in rightKeyConstraints) { string keyMsg = ViewCellSlot.SlotsToUserString(rightConstraint.KeySlots, true /*isFromCside*/); if (isFirst == false) { keyBuilder.Append("; "); } isFirst = false; keyBuilder.Append(keyMsg); rightKeyConstraint = rightConstraint; } List keySlots = new List (rightKeyConstraint.KeySlots); EntitySetBase table = keySlots[0].SSlot.MemberPath.Extent; EntitySetBase cSet = keySlots[0].CSlot.MemberPath.Extent; MemberPath tablePrefix = new MemberPath(table, workspace); ExtentKey tableKey = ExtentKey.GetPrimaryKeyForEntityType(tablePrefix, (EntityType) table.ElementType); string message; if (cSet is EntitySet) { message = System.Data.Entity.Strings.ViewGen_KeyConstraint_Update_Violation_EntitySet_3(keyBuilder.ToString(), cSet.Name, tableKey.ToUserString(), table.Name); } else { message = System.Data.Entity.Strings.ViewGen_KeyConstraint_Update_Violation_AssociationSet_2(cSet.Name, tableKey.ToUserString(), table.Name); } string debugMessage = StringUtil.FormatInvariant("PROBLEM: Not implied {0}", rightKeyConstraint); return new ErrorLog.Record(true, ViewGenErrorCode.KeyConstraintUpdateViolation, message, rightKeyConstraint.CellRelation.Cell, debugMessage); } #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.Data.Mapping.ViewGeneration.Structures; using System.Data.Mapping.ViewGeneration.Utils; using System.Data.Common.Utils; using System.Text; using System.Data.Metadata.Edm; using System.Data.Entity; namespace System.Data.Mapping.ViewGeneration.Validation { // Class representing a key constraint on the view cell relations internal class ViewKeyConstraint : KeyConstraint{ #region Constructor // effects: Constructs a key constraint for the given relation and keyslots internal ViewKeyConstraint(ViewCellRelation relation, IEnumerable keySlots) : base(relation, keySlots, ViewCellSlot.SpecificEqualityComparer) { } #endregion #region Properties // effects: Returns the cell corresponding to this constraint internal Cell Cell { get { return CellRelation.Cell; } } #endregion #region Methods internal bool Implies(ViewKeyConstraint second) { if (false == Object.ReferenceEquals(CellRelation, second.CellRelation)) { return false; } // Check if the slots in this key are a subset of slots in // second. If it is a key in this e.g., then is certainly a key as well if (KeySlots.IsSubsetOf(second.KeySlots)) { return true; } // Now check for subsetting taking referential constraints into account // Check that each slot in KeySlots can be found in second.KeySlots if we take // slot equivalence into account Set secondKeySlots = new Set (second.KeySlots); foreach (ViewCellSlot firstSlot in KeySlots) { bool found = false; // Need to find a match for firstSlot foreach (ViewCellSlot secondSlot in secondKeySlots) { if (ProjectedSlot.EqualityComparer.Equals(firstSlot.SSlot, secondSlot.SSlot)) { // S-side is the same. Check if C-side is the same as well. If so, remove it // from secondKeySlots // We have to check for C-side equivalence in terms of actual equality // and equivalence via ref constraints. The former is needed since the // S-side key slots would typically be mapped to the same C-side slot. // The latter is needed since the same S-side key slot could be mapped // into two slots on the C-side that are connected via a ref constraint MemberPath path1 = firstSlot.CSlot.MemberPath; MemberPath path2 = secondSlot.CSlot.MemberPath; if (MemberPath.EqualityComparer.Equals(path1, path2) || path1.IsEquivalentViaRefConstraint(path2)) { secondKeySlots.Remove(secondSlot); found = true; break; } } } if (found == false) { return false; } } // The subsetting holds when referential constraints are taken into account return true; } // effects: Given the fact that rightKeyConstraint is not implied by a // leftSide key constraint, return a useful error message -- some S // was not implied by the C key constraints internal static ErrorLog.Record GetErrorRecord(ViewKeyConstraint rightKeyConstraint, MetadataWorkspace workspace) { List keySlots = new List (rightKeyConstraint.KeySlots); EntitySetBase table = keySlots[0].SSlot.MemberPath.Extent; EntitySetBase cSet = keySlots[0].CSlot.MemberPath.Extent; MemberPath tablePrefix = new MemberPath(table, workspace); MemberPath cSetPrefix = new MemberPath(cSet, workspace); ExtentKey tableKey = ExtentKey.GetPrimaryKeyForEntityType(tablePrefix, (EntityType) table.ElementType); ExtentKey cSetKey = null; if (cSet is EntitySet) { cSetKey = ExtentKey.GetPrimaryKeyForEntityType(cSetPrefix, (EntityType)cSet.ElementType); } else { cSetKey = ExtentKey.GetKeyForRelationType(cSetPrefix, (AssociationType)cSet.ElementType); } string message = Strings.ViewGen_KeyConstraint_Violation_5( table.Name, ViewCellSlot.SlotsToUserString(rightKeyConstraint.KeySlots, false /*isFromCside*/), tableKey.ToUserString(), cSet.Name, ViewCellSlot.SlotsToUserString(rightKeyConstraint.KeySlots, true /*isFromCside*/), cSetKey.ToUserString()); string debugMessage = StringUtil.FormatInvariant("PROBLEM: Not implied {0}", rightKeyConstraint); return new ErrorLog.Record(true, ViewGenErrorCode.KeyConstraintViolation, message, rightKeyConstraint.CellRelation.Cell, debugMessage); } // effects: Given the fact that none of the rightKeyConstraint are not implied by a // leftSide key constraint, return a useful error message (used for // the Update requirement internal static ErrorLog.Record GetErrorRecord(IEnumerable rightKeyConstraints, MetadataWorkspace workspace) { ViewKeyConstraint rightKeyConstraint = null; StringBuilder keyBuilder = new StringBuilder(); bool isFirst = true; foreach (ViewKeyConstraint rightConstraint in rightKeyConstraints) { string keyMsg = ViewCellSlot.SlotsToUserString(rightConstraint.KeySlots, true /*isFromCside*/); if (isFirst == false) { keyBuilder.Append("; "); } isFirst = false; keyBuilder.Append(keyMsg); rightKeyConstraint = rightConstraint; } List keySlots = new List (rightKeyConstraint.KeySlots); EntitySetBase table = keySlots[0].SSlot.MemberPath.Extent; EntitySetBase cSet = keySlots[0].CSlot.MemberPath.Extent; MemberPath tablePrefix = new MemberPath(table, workspace); ExtentKey tableKey = ExtentKey.GetPrimaryKeyForEntityType(tablePrefix, (EntityType) table.ElementType); string message; if (cSet is EntitySet) { message = System.Data.Entity.Strings.ViewGen_KeyConstraint_Update_Violation_EntitySet_3(keyBuilder.ToString(), cSet.Name, tableKey.ToUserString(), table.Name); } else { message = System.Data.Entity.Strings.ViewGen_KeyConstraint_Update_Violation_AssociationSet_2(cSet.Name, tableKey.ToUserString(), table.Name); } string debugMessage = StringUtil.FormatInvariant("PROBLEM: Not implied {0}", rightKeyConstraint); return new ErrorLog.Record(true, ViewGenErrorCode.KeyConstraintUpdateViolation, message, rightKeyConstraint.CellRelation.Cell, debugMessage); } #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
- IPEndPointCollection.cs
- BitmapEffectDrawing.cs
- X509WindowsSecurityToken.cs
- ActiveDesignSurfaceEvent.cs
- DataSourceHelper.cs
- TransactionScopeDesigner.cs
- parserscommon.cs
- User.cs
- UnsafeNativeMethods.cs
- ReadOnlyDictionary.cs
- GC.cs
- XmlAttributeCache.cs
- SettingsPropertyValue.cs
- ProtectedProviderSettings.cs
- ClickablePoint.cs
- EllipticalNodeOperations.cs
- FilterableAttribute.cs
- filewebresponse.cs
- Rotation3D.cs
- DataGridViewCellValidatingEventArgs.cs
- Merger.cs
- XmlBufferedByteStreamReader.cs
- SqlDataSourceEnumerator.cs
- TemplateControl.cs
- TdsEnums.cs
- RenderDataDrawingContext.cs
- ExpressionConverter.cs
- AssemblyBuilder.cs
- SuppressMergeCheckAttribute.cs
- StructuralComparisons.cs
- FacetDescriptionElement.cs
- CustomTypeDescriptor.cs
- XomlSerializationHelpers.cs
- ItemsChangedEventArgs.cs
- CopyNodeSetAction.cs
- CellConstantDomain.cs
- GB18030Encoding.cs
- PropertyValueChangedEvent.cs
- DataGridViewDataConnection.cs
- SqlDataSourceConfigureSelectPanel.cs
- TrackingAnnotationCollection.cs
- Point3D.cs
- TreeViewItemAutomationPeer.cs
- CommonRemoteMemoryBlock.cs
- EventEntry.cs
- ReverseInheritProperty.cs
- DocumentPage.cs
- HashHelper.cs
- ScopedMessagePartSpecification.cs
- ObjectHandle.cs
- HttpServerVarsCollection.cs
- LinqDataSource.cs
- WebPartsPersonalization.cs
- AutoResetEvent.cs
- LowerCaseStringConverter.cs
- OleStrCAMarshaler.cs
- CodeTypeParameterCollection.cs
- BasicHttpMessageSecurity.cs
- HotSpotCollection.cs
- remotingproxy.cs
- WsdlParser.cs
- ArrayWithOffset.cs
- MappedMetaModel.cs
- ReturnEventArgs.cs
- PairComparer.cs
- SocketElement.cs
- FilterException.cs
- AppDomainManager.cs
- DataGridViewCellValidatingEventArgs.cs
- AnonymousIdentificationSection.cs
- DateTimeValueSerializerContext.cs
- DocumentApplicationJournalEntry.cs
- _ConnectStream.cs
- DoubleConverter.cs
- SkipStoryboardToFill.cs
- CharacterMetricsDictionary.cs
- FormatException.cs
- LinqTreeNodeEvaluator.cs
- DateTimeUtil.cs
- ComponentEditorForm.cs
- NodeLabelEditEvent.cs
- CLSCompliantAttribute.cs
- LineSegment.cs
- HtmlGenericControl.cs
- ItemChangedEventArgs.cs
- MailBnfHelper.cs
- EditableRegion.cs
- ScaleTransform.cs
- MessageQueueKey.cs
- JournalEntry.cs
- SafeCoTaskMem.cs
- WindowsFormsHelpers.cs
- XPathNavigator.cs
- StorageScalarPropertyMapping.cs
- storepermissionattribute.cs
- VisualBasic.cs
- XsdDateTime.cs
- ColorKeyFrameCollection.cs
- ErrorWrapper.cs
- SequenceFullException.cs