ExtentCqlBlock.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 / CqlGeneration / ExtentCqlBlock.cs / 1305376 / ExtentCqlBlock.cs
                        

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

 
using System.Text;
using System.Collections.Generic;
using System.Data.Mapping.ViewGeneration.Structures;
using System.Data.Common.Utils; 
using System.Data.Metadata.Edm;
 
namespace System.Data.Mapping.ViewGeneration.CqlGeneration 
{
 
    // A class that corresponds to the leaf CQL Blocks in the CqlBlock tree
    internal class ExtentCqlBlock : CqlBlock
    {
 
        private static readonly List EmptyChildren = new List();
 
        #region Constructors 
        // effects: Creates an Extent CqlBlock corresponding to
        // "extent" (the FROM part). SELECT is given by slots, WHERE by 
        // whereClause and AS by blockAliasNum
        internal ExtentCqlBlock(EntitySetBase extent, CellQuery.SelectDistinct selectDistinct,  SlotInfo[] slots,
                                BoolExpression whereClause, CqlIdentifiers identifiers, int blockAliasNum) :
            base(slots, EmptyChildren, whereClause, identifiers, blockAliasNum) 
        {
            m_extent = extent; 
            m_nodeTableAlias = identifiers.GetBlockAlias(); 
            m_selectDistinct = selectDistinct;
        } 
        #endregion

        #region Fields
        private EntitySetBase m_extent; // The extent for which we have this block 
        private string m_nodeTableAlias;
        CellQuery.SelectDistinct m_selectDistinct; 
        #endregion 

        #region Methods 
        // effects: See CqlBlock.AsCql
        internal override StringBuilder AsCql(StringBuilder builder, bool isTopLevel, int indentLevel)
        {
            // The SELECT part 
            GenerateProjectedtList(builder, indentLevel, m_nodeTableAlias, m_selectDistinct, false);
 
            // Get the FROM part 
            builder.Append("FROM ");
            // Get the extent object in C-Space (if m_extent is an S space object) 
            CqlWriter.AppendEscapedQualifiedName(builder, m_extent.EntityContainer.Name, m_extent.Name);
            builder.Append(" AS ")
                   .Append(m_nodeTableAlias);
 
            // Get the WHERE part only when the expression is not simply TRUE
            if (false == BoolExpression.EqualityComparer.Equals(WhereClause, BoolExpression.True)) 
            { 
                StringUtil.IndentNewLine(builder, indentLevel);
                builder.Append("WHERE "); 
                WhereClause.AsCql(builder, m_nodeTableAlias);
            }
            return builder;
        } 
        #endregion
    } 
} 

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

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