BooleanProjectedSlot.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Map / ViewGeneration / CqlGeneration / BooleanProjectedSlot.cs / 1305376 / BooleanProjectedSlot.cs

                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 

 
using System.Data.Mapping.ViewGeneration.Structures;
using System.Text;
using System.Diagnostics;
using System.Data.Common.Utils; 

namespace System.Data.Mapping.ViewGeneration.CqlGeneration 
{ 

    // This class represents slots for the boolean variables, e.g., _from0, 
    // _from1, etc
    internal class BooleanProjectedSlot : ProjectedSlot
    {
 
        #region Constructor
        // effects: Creates a boolean slot for expression that comes from 
        // originalCellNum, i.e., the value of the slot is "expr" and the 
        // name is "_from", e.g., _from2
        internal BooleanProjectedSlot(BoolExpression expr, CqlIdentifiers identifiers, int originalCellNum) 
        {
            m_expr = expr;
            m_originalCell = new CellIdBoolean(identifiers, originalCellNum);
            CellIdBoolean boolExpr = expr.AsLiteral as CellIdBoolean; 
            Debug.Assert(boolExpr == null ||
                         BoolLiteral.EqualityComparer.Equals(boolExpr, m_originalCell), 
                         "Cellid boolean for the slot and cell number disagree"); 
        }
        #endregion 

        #region Fields
        private BoolExpression m_expr; // The actual value of the slot -
        // could be CellIdBoolean! 
        // A boolean corresponding to the original cell number (from0)
        private CellIdBoolean m_originalCell; 
        #endregion 

        #region Methods 
        internal override StringBuilder AsCql(StringBuilder builder, MemberPath outputMember,
                                              string blockAlias, int indentLevel)
        {
            if (m_expr.IsTrue || m_expr.IsFalse) 
            {
                // No Case statement for TRUE and FALSE 
                m_expr.AsCql(builder, blockAlias); 
            }
            else 
            {
                builder.Append("CASE WHEN ");
                m_expr.AsCql(builder, blockAlias);
                builder.Append(" THEN True ELSE False END"); 
            }
            return builder; 
        } 

        internal override string CqlFieldAlias(MemberPath outputMember) 
        {
            // Return _from0, _from1 etc
            return m_originalCell.SlotName;
        } 

        internal override void ToCompactString(StringBuilder builder) 
        { 
            StringUtil.FormatStringBuilder(builder, "<{0}, ", m_originalCell.SlotName);
            m_expr.ToCompactString(builder); 
            builder.Append('>');
        }
        #endregion
 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner [....]
// @backupOwner [....] 
//--------------------------------------------------------------------- 

 
using System.Data.Mapping.ViewGeneration.Structures;
using System.Text;
using System.Diagnostics;
using System.Data.Common.Utils; 

namespace System.Data.Mapping.ViewGeneration.CqlGeneration 
{ 

    // This class represents slots for the boolean variables, e.g., _from0, 
    // _from1, etc
    internal class BooleanProjectedSlot : ProjectedSlot
    {
 
        #region Constructor
        // effects: Creates a boolean slot for expression that comes from 
        // originalCellNum, i.e., the value of the slot is "expr" and the 
        // name is "_from", e.g., _from2
        internal BooleanProjectedSlot(BoolExpression expr, CqlIdentifiers identifiers, int originalCellNum) 
        {
            m_expr = expr;
            m_originalCell = new CellIdBoolean(identifiers, originalCellNum);
            CellIdBoolean boolExpr = expr.AsLiteral as CellIdBoolean; 
            Debug.Assert(boolExpr == null ||
                         BoolLiteral.EqualityComparer.Equals(boolExpr, m_originalCell), 
                         "Cellid boolean for the slot and cell number disagree"); 
        }
        #endregion 

        #region Fields
        private BoolExpression m_expr; // The actual value of the slot -
        // could be CellIdBoolean! 
        // A boolean corresponding to the original cell number (from0)
        private CellIdBoolean m_originalCell; 
        #endregion 

        #region Methods 
        internal override StringBuilder AsCql(StringBuilder builder, MemberPath outputMember,
                                              string blockAlias, int indentLevel)
        {
            if (m_expr.IsTrue || m_expr.IsFalse) 
            {
                // No Case statement for TRUE and FALSE 
                m_expr.AsCql(builder, blockAlias); 
            }
            else 
            {
                builder.Append("CASE WHEN ");
                m_expr.AsCql(builder, blockAlias);
                builder.Append(" THEN True ELSE False END"); 
            }
            return builder; 
        } 

        internal override string CqlFieldAlias(MemberPath outputMember) 
        {
            // Return _from0, _from1 etc
            return m_originalCell.SlotName;
        } 

        internal override void ToCompactString(StringBuilder builder) 
        { 
            StringUtil.FormatStringBuilder(builder, "<{0}, ", m_originalCell.SlotName);
            m_expr.ToCompactString(builder); 
            builder.Append('>');
        }
        #endregion
 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
                        

Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK