SelectItemNode.cs

Go to the documentation of this file.

// 
//  Copyright 2010-2015 Deveel
// 
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
// 
//        http://www.apache.org/licenses/LICENSE-2.0
// 
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.
//

using System;
using System.Linq;

namespace Deveel.Data.Sql.Parser {
    class SelectItemNode : SqlNode {
        internal SelectItemNode() {
        }

        public ObjectNameNode Name { get; private set; }

        public IExpressionNode Expression { get; private set; }

        public IdentifierNode Alias { get; private set; }

        protected override void OnNodeInit() {
            Expression = ChildNodes.OfType<IExpressionNode>().FirstOrDefault();
            Name = ChildNodes.OfType<ObjectNameNode>().FirstOrDefault();

            var aliasNode = this.FindByName("select_as_opt");
            if (aliasNode != null)
                Alias = aliasNode.FindNode<IdentifierNode>();
        }
    }
}