Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / ndp / fx / src / DataEntity / System / Data / Map / ViewGeneration / Structures / BoolLiteral.cs / 2 / BoolLiteral.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.Diagnostics; using System.Linq; namespace System.Data.Mapping.ViewGeneration.Structures { using DomainBoolExpr = BoolExpr>; using DomainNotExpr = NotExpr >; using DomainTermExpr = TermExpr >; // A class that "ties" up all the literals in boolean expressions -- // e.g., OneOfConst and CellIdBoolean derive from it // Conditions represented by BoolLiterals need to be synchronized with DomainConstraints, // which may be modified upon calling ExpensiveSimplify. This is what // the method FixRange is used for. internal abstract class BoolLiteral : InternalBase { #region Fields internal static readonly IEqualityComparer EqualityComparer = new BoolLiteralComparer(); internal static readonly IEqualityComparer EqualityIdentifierComparer = new IdentifierComparer(); #endregion #region methods // effects: Creates a term expression of the form: "literal in range with all possible values being domain" internal static DomainTermExpr MakeTermExpression(BoolLiteral literal, IEnumerable domain, IEnumerable range) { Set domainSet = new Set (domain, CellConstant.EqualityComparer); domainSet.MakeReadOnly(); DomainVariable variable = new DomainVariable (literal, domainSet, EqualityIdentifierComparer); Set rangeSet = new Set (range, CellConstant.EqualityComparer); rangeSet.MakeReadOnly(); DomainConstraint constraint = new DomainConstraint (variable, rangeSet); DomainTermExpr result = new DomainTermExpr(EqualityComparer >.Default, constraint); return result; } // effects: Fixes the range of this using the new values provided in // range and returns a boolean expression corresponding to the new value internal abstract DomainBoolExpr FixRange(Set range, MemberDomainMap memberDomainMap); internal abstract DomainBoolExpr GetDomainBoolExpression(MemberDomainMap domainMap); // effects: See BoolExpression.RemapBool internal abstract BoolLiteral RemapBool(Dictionary remap); // effects: See BoolExpression.GetRequiredSlots internal abstract void GetRequiredSlots(MemberPathMapBase projectedSlotMap, bool[] requiredSlots); // effects: See BoolExpression.AsCql internal abstract StringBuilder AsCql(StringBuilder builder, string blockAlias, bool canSkipIsNotNull); internal abstract StringBuilder AsUserString(StringBuilder builder, string blockAlias, bool canSkipIsNotNull); internal abstract StringBuilder AsNegatedUserString(StringBuilder builder, string blockAlias, bool canSkipIsNotNull); // effects: Checks if the identifier in this is the same as the one in right protected virtual bool IsIdentifierEqualTo(BoolLiteral right) { return IsEqualTo(right); } // effects: Get the hash code based on the identifier protected virtual int GetIdentifierHash() { return GetHash(); } protected abstract bool IsEqualTo(BoolLiteral right); protected abstract int GetHash(); #endregion #region Comparer class // This class compares boolean expressions private class BoolLiteralComparer : IEqualityComparer { public bool Equals(BoolLiteral left, BoolLiteral right) { // Quick check with references if (object.ReferenceEquals(left, right)) { // Gets the Null and Undefined case as well return true; } // One of them is non-null at least if (left == null || right == null) { return false; } // Both are non-null at this point return left.IsEqualTo(right); } public int GetHashCode(BoolLiteral literal) { return literal.GetHash(); } } #endregion #region Identifier Comparer class // This class compares just the identifier in boolean expressions private class IdentifierComparer : IEqualityComparer { public bool Equals(BoolLiteral left, BoolLiteral right) { // Quick check with references if (object.ReferenceEquals(left, right)) { // Gets the Null and Undefined case as well return true; } // One of them is non-null at least if (left == null || right == null) { return false; } // Both are non-null at this point return left.IsIdentifierEqualTo(right); } public int GetHashCode(BoolLiteral literal) { return literal.GetIdentifierHash(); } } #endregion } internal abstract class TrueFalseLiteral : BoolLiteral { internal override DomainBoolExpr GetDomainBoolExpression(MemberDomainMap domainMap) { // Essentially say that the variable can take values true or false and here its value is only true IEnumerable actualValues = new CellConstant[] { new ScalarConstant(true) }; IEnumerable possibleValues = new CellConstant[] { new ScalarConstant(true), new ScalarConstant(false) }; Set variableDomain = new Set (possibleValues, CellConstant.EqualityComparer).MakeReadOnly(); Set thisDomain = new Set (actualValues, CellConstant.EqualityComparer).MakeReadOnly(); DomainTermExpr result = MakeTermExpression(this, variableDomain, thisDomain); return result; } // effects: Fixes the range of this using the new values provided in // range and returns a boolean expression corresponding to the new value internal override DomainBoolExpr FixRange(Set range, MemberDomainMap memberDomainMap) { Debug.Assert(range.Count == 1, "For BoolLiterals, there should be precisely one value - true or false"); ScalarConstant scalar = (ScalarConstant)range.First(); DomainBoolExpr expr = GetDomainBoolExpression(memberDomainMap); if ((bool)scalar.Value == false) { // The range of the variable was "inverted". Return a NOT of // the expression expr = new DomainNotExpr(expr); } return expr; } } } // 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.Diagnostics; using System.Linq; namespace System.Data.Mapping.ViewGeneration.Structures { using DomainBoolExpr = BoolExpr>; using DomainNotExpr = NotExpr >; using DomainTermExpr = TermExpr >; // A class that "ties" up all the literals in boolean expressions -- // e.g., OneOfConst and CellIdBoolean derive from it // Conditions represented by BoolLiterals need to be synchronized with DomainConstraints, // which may be modified upon calling ExpensiveSimplify. This is what // the method FixRange is used for. internal abstract class BoolLiteral : InternalBase { #region Fields internal static readonly IEqualityComparer EqualityComparer = new BoolLiteralComparer(); internal static readonly IEqualityComparer EqualityIdentifierComparer = new IdentifierComparer(); #endregion #region methods // effects: Creates a term expression of the form: "literal in range with all possible values being domain" internal static DomainTermExpr MakeTermExpression(BoolLiteral literal, IEnumerable domain, IEnumerable range) { Set domainSet = new Set (domain, CellConstant.EqualityComparer); domainSet.MakeReadOnly(); DomainVariable variable = new DomainVariable (literal, domainSet, EqualityIdentifierComparer); Set rangeSet = new Set (range, CellConstant.EqualityComparer); rangeSet.MakeReadOnly(); DomainConstraint constraint = new DomainConstraint (variable, rangeSet); DomainTermExpr result = new DomainTermExpr(EqualityComparer >.Default, constraint); return result; } // effects: Fixes the range of this using the new values provided in // range and returns a boolean expression corresponding to the new value internal abstract DomainBoolExpr FixRange(Set range, MemberDomainMap memberDomainMap); internal abstract DomainBoolExpr GetDomainBoolExpression(MemberDomainMap domainMap); // effects: See BoolExpression.RemapBool internal abstract BoolLiteral RemapBool(Dictionary remap); // effects: See BoolExpression.GetRequiredSlots internal abstract void GetRequiredSlots(MemberPathMapBase projectedSlotMap, bool[] requiredSlots); // effects: See BoolExpression.AsCql internal abstract StringBuilder AsCql(StringBuilder builder, string blockAlias, bool canSkipIsNotNull); internal abstract StringBuilder AsUserString(StringBuilder builder, string blockAlias, bool canSkipIsNotNull); internal abstract StringBuilder AsNegatedUserString(StringBuilder builder, string blockAlias, bool canSkipIsNotNull); // effects: Checks if the identifier in this is the same as the one in right protected virtual bool IsIdentifierEqualTo(BoolLiteral right) { return IsEqualTo(right); } // effects: Get the hash code based on the identifier protected virtual int GetIdentifierHash() { return GetHash(); } protected abstract bool IsEqualTo(BoolLiteral right); protected abstract int GetHash(); #endregion #region Comparer class // This class compares boolean expressions private class BoolLiteralComparer : IEqualityComparer { public bool Equals(BoolLiteral left, BoolLiteral right) { // Quick check with references if (object.ReferenceEquals(left, right)) { // Gets the Null and Undefined case as well return true; } // One of them is non-null at least if (left == null || right == null) { return false; } // Both are non-null at this point return left.IsEqualTo(right); } public int GetHashCode(BoolLiteral literal) { return literal.GetHash(); } } #endregion #region Identifier Comparer class // This class compares just the identifier in boolean expressions private class IdentifierComparer : IEqualityComparer { public bool Equals(BoolLiteral left, BoolLiteral right) { // Quick check with references if (object.ReferenceEquals(left, right)) { // Gets the Null and Undefined case as well return true; } // One of them is non-null at least if (left == null || right == null) { return false; } // Both are non-null at this point return left.IsIdentifierEqualTo(right); } public int GetHashCode(BoolLiteral literal) { return literal.GetIdentifierHash(); } } #endregion } internal abstract class TrueFalseLiteral : BoolLiteral { internal override DomainBoolExpr GetDomainBoolExpression(MemberDomainMap domainMap) { // Essentially say that the variable can take values true or false and here its value is only true IEnumerable actualValues = new CellConstant[] { new ScalarConstant(true) }; IEnumerable possibleValues = new CellConstant[] { new ScalarConstant(true), new ScalarConstant(false) }; Set variableDomain = new Set (possibleValues, CellConstant.EqualityComparer).MakeReadOnly(); Set thisDomain = new Set (actualValues, CellConstant.EqualityComparer).MakeReadOnly(); DomainTermExpr result = MakeTermExpression(this, variableDomain, thisDomain); return result; } // effects: Fixes the range of this using the new values provided in // range and returns a boolean expression corresponding to the new value internal override DomainBoolExpr FixRange(Set range, MemberDomainMap memberDomainMap) { Debug.Assert(range.Count == 1, "For BoolLiterals, there should be precisely one value - true or false"); ScalarConstant scalar = (ScalarConstant)range.First(); DomainBoolExpr expr = GetDomainBoolExpression(memberDomainMap); if ((bool)scalar.Value == false) { // The range of the variable was "inverted". Return a NOT of // the expression expr = new DomainNotExpr(expr); } return expr; } } } // 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
- FieldAccessException.cs
- XmlSignatureProperties.cs
- ProbeDuplex11AsyncResult.cs
- XmlSchemaAttributeGroupRef.cs
- GridViewHeaderRowPresenterAutomationPeer.cs
- TableHeaderCell.cs
- Int32Converter.cs
- TagPrefixInfo.cs
- TextParentUndoUnit.cs
- DoubleAnimationUsingKeyFrames.cs
- SchemaHelper.cs
- DisplayNameAttribute.cs
- WebScriptEnablingBehavior.cs
- NotSupportedException.cs
- CheckBoxList.cs
- ModelTreeEnumerator.cs
- HttpContextBase.cs
- SchemeSettingElementCollection.cs
- BindingCompleteEventArgs.cs
- TemplateComponentConnector.cs
- BehaviorDragDropEventArgs.cs
- HwndSourceParameters.cs
- DataGridViewRowHeightInfoNeededEventArgs.cs
- WebPartDescription.cs
- MenuBase.cs
- Reference.cs
- ProcessingInstructionAction.cs
- UriTemplateTrieLocation.cs
- CommandLibraryHelper.cs
- RepeaterItemCollection.cs
- DynamicUpdateCommand.cs
- XmlNode.cs
- EntityCommandDefinition.cs
- DataFormat.cs
- COM2ComponentEditor.cs
- DataControlCommands.cs
- ChtmlTextWriter.cs
- PromptBuilder.cs
- WebPartChrome.cs
- ZipFileInfo.cs
- WindowsIdentity.cs
- CompositeTypefaceMetrics.cs
- TypeElementCollection.cs
- Calendar.cs
- FileDialog_Vista.cs
- EntityDataSourceWrapperCollection.cs
- HostedElements.cs
- CompositeControl.cs
- RawTextInputReport.cs
- OptimisticConcurrencyException.cs
- DocumentEventArgs.cs
- TextSpanModifier.cs
- InvalidDataException.cs
- PartialArray.cs
- SoapServerProtocol.cs
- SqlXmlStorage.cs
- OleServicesContext.cs
- ParallelDesigner.xaml.cs
- AssemblyBuilderData.cs
- DriveInfo.cs
- COM2ColorConverter.cs
- CodeDomConfigurationHandler.cs
- BaseTransportHeaders.cs
- login.cs
- UInt64.cs
- Domain.cs
- CapabilitiesSection.cs
- DrawingContextDrawingContextWalker.cs
- TextBox.cs
- SmtpMail.cs
- DataFormats.cs
- ValidationSummary.cs
- Substitution.cs
- WorkflowMessageEventArgs.cs
- XPathNavigatorReader.cs
- ClonableStack.cs
- ThreadExceptionDialog.cs
- MulticastIPAddressInformationCollection.cs
- EntityViewContainer.cs
- PropagationProtocolsTracing.cs
- LinqDataView.cs
- CustomAttributeSerializer.cs
- MimeTypePropertyAttribute.cs
- HorizontalAlignConverter.cs
- Page.cs
- connectionpool.cs
- ReadOnlyAttribute.cs
- XmlSchemaSimpleTypeList.cs
- ActivityTrace.cs
- COM2ComponentEditor.cs
- SvcMapFileLoader.cs
- EventHandlersStore.cs
- FormsAuthenticationCredentials.cs
- OracleConnection.cs
- ConstructorArgumentAttribute.cs
- AppDomainGrammarProxy.cs
- TdsEnums.cs
- Vector3DKeyFrameCollection.cs
- TextBoxDesigner.cs
- EntityTransaction.cs