Exemplos de System.Data.Services.Client ProjectionPlanCompiler.Visit em C# (CSharp)

Exemplo n.º 1

        internal static ProjectionPlan CompilePlan(LambdaExpression projection, Dictionary <Expression, Expression> normalizerRewrites)
        {
            Debug.Assert(projection != null, "projection != null");
            Debug.Assert(projection.Parameters.Count == 1, "projection.Parameters.Count == 1");
            Debug.Assert(
                projection.Body.NodeType == ExpressionType.Constant ||
                projection.Body.NodeType == ExpressionType.MemberInit ||
                projection.Body.NodeType == ExpressionType.MemberAccess ||
                projection.Body.NodeType == ExpressionType.Convert ||
                projection.Body.NodeType == ExpressionType.ConvertChecked ||
                projection.Body.NodeType == ExpressionType.New,
                "projection.Body.NodeType == Constant, MemberInit, MemberAccess, Convert(Checked) New");

            ProjectionPlanCompiler rewriter = new ProjectionPlanCompiler(normalizerRewrites);

#if TRACE_CLIENT_PROJECTIONS
            Trace.WriteLine("Projection: " + projection);
#endif

            Expression plan = rewriter.Visit(projection);
#if TRACE_CLIENT_PROJECTIONS
            Trace.WriteLine("Becomes: " + plan);
#endif

            ProjectionPlan result = new ProjectionPlan();
            result.Plan          = (Func <object, object, Type, object>)((LambdaExpression)plan).Compile();
            result.ProjectedType = projection.Body.Type;
#if DEBUG
            result.SourceProjection = projection;
            result.TargetProjection = plan;
#endif
            return(result);
        }

Exemplo n.º 2

Arquivo: ProjectionPlanCompiler.cs Projeto: nlhepler/mono

        internal static ProjectionPlan CompilePlan(LambdaExpression projection, Dictionary<Expression, Expression> normalizerRewrites)
        {
            Debug.Assert(projection != null, "projection != null");
            Debug.Assert(projection.Parameters.Count == 1, "projection.Parameters.Count == 1");
            Debug.Assert(
                projection.Body.NodeType == ExpressionType.Constant ||
                projection.Body.NodeType == ExpressionType.MemberInit ||
                projection.Body.NodeType == ExpressionType.MemberAccess ||
                projection.Body.NodeType == ExpressionType.Convert ||
                projection.Body.NodeType == ExpressionType.ConvertChecked ||
                projection.Body.NodeType == ExpressionType.New,
                "projection.Body.NodeType == Constant, MemberInit, MemberAccess, Convert(Checked) New");

            ProjectionPlanCompiler rewriter = new ProjectionPlanCompiler(normalizerRewrites);
#if TRACE_CLIENT_PROJECTIONS
            Trace.WriteLine("Projection: " + projection);
#endif

            Expression plan = rewriter.Visit(projection);
#if TRACE_CLIENT_PROJECTIONS
            Trace.WriteLine("Becomes: " + plan);
#endif

            ProjectionPlan result = new ProjectionPlan();
            result.Plan = (Func<object, object, Type, object>)((LambdaExpression)plan).Compile();
            result.ProjectedType = projection.Body.Type;
#if DEBUG
            result.SourceProjection = projection;
            result.TargetProjection = plan;
#endif
            return result;
        }