BranchQueryPlanNode.cs

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// 
//  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 Deveel.Data;
using Deveel.Data.Serialization;
using Deveel.Data.Sql.Tables;

namespace Deveel.Data.Sql.Query {
    abstract class BranchQueryPlanNode : IQueryPlanNode {
        // The left and right node.

        protected BranchQueryPlanNode(IQueryPlanNode left, IQueryPlanNode right) {
            Left = left;
            Right = right;
        }

        protected BranchQueryPlanNode(ObjectData data) {
            Left = data.GetValue<IQueryPlanNode>("Left");
            Right = data.GetValue<IQueryPlanNode>("Right");
        }

        public IQueryPlanNode Left { get; private set; }

        public IQueryPlanNode Right { get; private set; }

        public abstract ITable Evaluate(IRequest context);

        void ISerializable.GetData(SerializeData data) {
            data.SetValue("Left", Left);
            data.SetValue("Right", Right);

            GetData(data);
        }

        protected virtual void GetData(SerializeData data) {
        }
    }
}