61 lines
1.8 KiB
C#
61 lines
1.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Data.SqlClient;
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using System.Linq.Expressions;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using System.Data.Linq;
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namespace System.Data.Linq.SqlClient {
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// SQL Client extensions to ExpressionType
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internal enum InternalExpressionType {
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Known = 2000,
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LinkedTable = 2001
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}
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abstract internal class InternalExpression : Expression {
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#pragma warning disable 618 // Disable the 'obsolete' warning.
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internal InternalExpression(InternalExpressionType nt, Type type)
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: base ((ExpressionType)nt, type) {
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}
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#pragma warning restore 618
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internal static KnownExpression Known(SqlExpression expr) {
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return new KnownExpression(expr, expr.ClrType);
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}
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internal static KnownExpression Known(SqlNode node, Type type) {
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return new KnownExpression(node, type);
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}
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}
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internal sealed class KnownExpression : InternalExpression {
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SqlNode node;
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internal KnownExpression(SqlNode node, Type type)
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: base(InternalExpressionType.Known, type) {
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this.node = node;
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}
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internal SqlNode Node {
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get { return this.node; }
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}
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}
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internal sealed class LinkedTableExpression : InternalExpression {
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private SqlLink link;
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private ITable table;
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internal LinkedTableExpression(SqlLink link, ITable table, Type type)
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: base(InternalExpressionType.LinkedTable, type) {
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this.link = link;
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this.table = table;
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}
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internal SqlLink Link {
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get {return this.link;}
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}
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internal ITable Table {
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get {return this.table;}
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}
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}
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}
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