Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataWeb / Client / System / Data / Services / Client / ALinq / SkipQueryOptionExpression.cs / 1305376 / SkipQueryOptionExpression.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // //// Respresents a skip query option in resource bound expression tree. // // // @owner [....] //--------------------------------------------------------------------- namespace System.Data.Services.Client { using System; using System.Diagnostics; using System.Linq.Expressions; ////// An resource specific expression representing a skip query option. /// [DebuggerDisplay("SkipQueryOptionExpression {SkipAmount}")] internal class SkipQueryOptionExpression : QueryOptionExpression { ///amount to skip private ConstantExpression skipAmount; ////// Creates a SkipQueryOption expression /// /// the return type of the expression /// the query option value internal SkipQueryOptionExpression(Type type, ConstantExpression skipAmount) : base((ExpressionType)ResourceExpressionType.SkipQueryOption, type) { this.skipAmount = skipAmount; } ////// query option value /// internal ConstantExpression SkipAmount { get { return this.skipAmount; } } ////// Composes the ///expression with this one when it's specified multiple times. /// to compose. /// /// The expression that results from composing the internal override QueryOptionExpression ComposeMultipleSpecification(QueryOptionExpression previous) { Debug.Assert(previous != null, "other != null"); Debug.Assert(previous.GetType() == this.GetType(), "other.GetType == this.GetType() -- otherwise it's not the same specification"); Debug.Assert(this.skipAmount != null, "this.skipAmount != null"); Debug.Assert( this.skipAmount.Type == typeof(int), "this.skipAmount.Type == typeof(int) -- otherwise it wouldn't have matched the Enumerable.Skip(source, int count) signature"); int thisValue = (int)this.skipAmount.Value; int previousValue = (int)((SkipQueryOptionExpression)previous).skipAmount.Value; return new SkipQueryOptionExpression(this.Type, Expression.Constant(thisValue + previousValue, typeof(int))); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.expression with this one. ///
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