53 lines
1.6 KiB
C#
53 lines
1.6 KiB
C#
using System;
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using System.Collections.Generic;
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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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internal class SqlAliaser {
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Visitor visitor;
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internal SqlAliaser() {
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this.visitor = new Visitor();
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}
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internal SqlNode AssociateColumnsWithAliases(SqlNode node) {
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return this.visitor.Visit(node);
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}
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class Visitor : SqlVisitor {
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SqlAlias alias;
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internal Visitor() {
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}
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internal override SqlAlias VisitAlias(SqlAlias sqlAlias) {
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SqlAlias save = this.alias;
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this.alias = sqlAlias;
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sqlAlias.Node = this.Visit(sqlAlias.Node);
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this.alias = save;
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return sqlAlias;
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}
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internal override SqlRow VisitRow(SqlRow row) {
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foreach (SqlColumn c in row.Columns) {
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c.Alias = alias;
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}
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return base.VisitRow(row);
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}
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internal override SqlTable VisitTable(SqlTable tab) {
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foreach (SqlColumn c in tab.Columns) {
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c.Alias = alias;
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}
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return base.VisitTable(tab);
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}
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internal override SqlExpression VisitTableValuedFunctionCall(SqlTableValuedFunctionCall fc) {
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foreach (SqlColumn c in fc.Columns) {
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c.Alias = this.alias;
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}
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return base.VisitTableValuedFunctionCall(fc);
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}
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}
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}
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}
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