CellIdBoolean.cs source code in C# .NET

Source code for the .NET framework in C#

                        

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(Dictionary remap) 
        {
            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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