DbDeleteCommandTree.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / ndp / fx / src / DataEntity / System / Data / Common / CommandTrees / DbDeleteCommandTree.cs / 2 / DbDeleteCommandTree.cs

                            //---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner  [....], [....]
//--------------------------------------------------------------------- 
 
using System;
using System.Collections.Generic; 

using System.Data.Metadata.Edm;
using System.Data.Common.CommandTrees.Internal;
using System.Data.Common.Utils; 

namespace System.Data.Common.CommandTrees 
{ 
    /// 
    /// Represents a single row delete operation expressed as a canonical command tree. 
    /// 
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "Db")]
    public sealed class DbDeleteCommandTree : DbModificationCommandTree
    { 
        private DbExpression _predicate;
 
        internal DbDeleteCommandTree(MetadataWorkspace metadata, DataSpace dataSpace) 
            : base(metadata, dataSpace)
        { 
        }

        /// 
        /// Gets an  that specifies the predicate used to determine which members of the target collection should be deleted. 
        /// 
        ///  
        /// The predicate can include only the following elements: 
        /// 
        /// Equality expression 
        /// Constant expression
        /// IsNull expression
        /// Property expression
        /// Reference expression to the target 
        /// And expression
        /// Or expression 
        /// Not expression 
        /// 
        ///  
        public DbExpression Predicate
        {
            get
            { 
                return _predicate;
            } 
 
            internal set
            { 
                _predicate = value;
            }
        }
 
        internal override DbCommandTreeKind CommandTreeKind
        { 
            get { return DbCommandTreeKind.Delete; } 
        }
 
        internal override bool HasReader
        {
            get
            { 
                // a delete command never returns server-gen values, and
                // therefore never returns a reader 
                return false; 
            }
        } 

        internal override void DumpStructure(ExpressionDumper dumper)
        {
            base.DumpStructure(dumper); 

            if (this.Predicate != null) 
            { 
                dumper.Dump(this.Predicate, "Predicate");
            } 
        }

        internal override string PrintTree(ExpressionPrinter printer)
        { 
            return printer.Print(this);
        } 
 
        internal override void Replace(ExpressionReplacer replacer)
        { 
            using (new EntityBid.ScopeAuto(" %d#", this.ObjectId))
            {
                throw EntityUtil.NotSupported();
            } 
        }
    } 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//---------------------------------------------------------------------- 
// 
//      Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// 
// @owner  [....], [....]
//--------------------------------------------------------------------- 
 
using System;
using System.Collections.Generic; 

using System.Data.Metadata.Edm;
using System.Data.Common.CommandTrees.Internal;
using System.Data.Common.Utils; 

namespace System.Data.Common.CommandTrees 
{ 
    /// 
    /// Represents a single row delete operation expressed as a canonical command tree. 
    /// 
    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1709:IdentifiersShouldBeCasedCorrectly", MessageId = "Db")]
    public sealed class DbDeleteCommandTree : DbModificationCommandTree
    { 
        private DbExpression _predicate;
 
        internal DbDeleteCommandTree(MetadataWorkspace metadata, DataSpace dataSpace) 
            : base(metadata, dataSpace)
        { 
        }

        /// 
        /// Gets an  that specifies the predicate used to determine which members of the target collection should be deleted. 
        /// 
        ///  
        /// The predicate can include only the following elements: 
        /// 
        /// Equality expression 
        /// Constant expression
        /// IsNull expression
        /// Property expression
        /// Reference expression to the target 
        /// And expression
        /// Or expression 
        /// Not expression 
        /// 
        ///  
        public DbExpression Predicate
        {
            get
            { 
                return _predicate;
            } 
 
            internal set
            { 
                _predicate = value;
            }
        }
 
        internal override DbCommandTreeKind CommandTreeKind
        { 
            get { return DbCommandTreeKind.Delete; } 
        }
 
        internal override bool HasReader
        {
            get
            { 
                // a delete command never returns server-gen values, and
                // therefore never returns a reader 
                return false; 
            }
        } 

        internal override void DumpStructure(ExpressionDumper dumper)
        {
            base.DumpStructure(dumper); 

            if (this.Predicate != null) 
            { 
                dumper.Dump(this.Predicate, "Predicate");
            } 
        }

        internal override string PrintTree(ExpressionPrinter printer)
        { 
            return printer.Print(this);
        } 
 
        internal override void Replace(ExpressionReplacer replacer)
        { 
            using (new EntityBid.ScopeAuto(" %d#", this.ObjectId))
            {
                throw EntityUtil.NotSupported();
            } 
        }
    } 
} 

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

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