Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Map / ViewGeneration / Structures / CellIdBoolean.cs / 1305376 / CellIdBoolean.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Data.Common.Utils.Boolean; using System.Text; using System.Collections.Generic; using System.Data.Common.Utils; using System.Data.Mapping.ViewGeneration.CqlGeneration; using System.Data.Mapping.ViewGeneration.Utils; using System.Diagnostics; namespace System.Data.Mapping.ViewGeneration.Structures { using DomainBoolExpr = BoolExpr>; using DomainNotExpr = NotExpr >; using DomainTermExpr = TermExpr >; using System.Data.Entity; /// /// Wraps from0, from1, etc. boolean fields that identify /// the source of tuples (# of respective cell query) in the view statements /// internal class CellIdBoolean : TrueFalseLiteral { #region Constructor // effects: Creates a boolean expression for the variable name // specified by "index", e.g., 0 results in from0, 1 into from1 internal CellIdBoolean(CqlIdentifiers identifiers, int index) { Debug.Assert(index >= 0); m_identifiers = identifiers; m_index = index; } #endregion #region Fields private int m_index; // e.g., from0, from1 private CqlIdentifiers m_identifiers; // Whether the prefix should be _from or something more complicated due to collisions #endregion #region Properties // effects: Returns the slotName corresponding to this, ie., _from0 etc internal string SlotName { get { string result = m_identifiers.GetFromVariable(m_index); return result; } } #endregion #region BoolLiteral members internal override StringBuilder AsCql(StringBuilder builder, string blockAlias, bool canSkipIsNotNull) { // Get e.g., T2._from1 using the table alias string qualifiedName = CqlWriter.GetQualifiedName(blockAlias, SlotName); builder.Append(qualifiedName); return builder; } internal override StringBuilder AsUserString(StringBuilder builder, string blockAlias, bool canSkipIsNotNull) { return AsCql(builder, blockAlias, canSkipIsNotNull); } internal override StringBuilder AsNegatedUserString(StringBuilder builder, string blockAlias, bool canSkipIsNotNull) { builder.Append("NOT("); builder = AsUserString(builder, blockAlias, canSkipIsNotNull); builder.Append(")"); return builder; } internal override void GetRequiredSlots(MemberProjectionIndex projectedSlotMap, bool[] requiredSlots) { // The slot corresponding to from1, etc int numBoolSlots = requiredSlots.Length - projectedSlotMap.Count; int slotNum = ProjectedSlot.BoolIndexToSlot(m_index, projectedSlotMap, numBoolSlots); requiredSlots[slotNum] = true; } protected override bool IsEqualTo(BoolLiteral right) { CellIdBoolean rightBoolean = right as CellIdBoolean; if (rightBoolean == null) { return false; } return m_index == rightBoolean.m_index; } protected override int GetHash() { return m_index.GetHashCode(); } // effects: See BoolExpression.RemapBool internal override BoolLiteral RemapBool(Dictionaryremap) { return this; } #endregion #region Other Methods internal override void ToCompactString(StringBuilder builder) { builder.Append(SlotName); } #endregion } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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