GeneratedTable.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 System.Collections;
using System.Collections.Generic;

using Deveel.Data.Index;
using Deveel.Data.Sql.Objects;

namespace Deveel.Data.Sql.Tables {
    abstract class GeneratedTable : ITable {
        protected GeneratedTable(IContext dbContext) {
            Context = dbContext;
        }

        ~GeneratedTable() {
            Dispose(false);
        }

        public IContext Context { get; private set; }

        ObjectName IDbObject.FullName {
            get { return TableInfo.TableName; }
        }

        DbObjectType IDbObject.ObjectType {
            get { return DbObjectType.Table; }
        }

        public IEnumerator<Row> GetEnumerator() {
            return new SimpleRowEnumerator(this);
        }

        IEnumerator IEnumerable.GetEnumerator() {
            return GetEnumerator();
        }

        public abstract TableInfo TableInfo { get; }

        public abstract int RowCount { get; }

        public abstract DataObject GetValue(long rowNumber, int columnOffset);

        public virtual ColumnIndex GetIndex(int columnOffset) {
            return new BlindSearchIndex(this, columnOffset);
        }

        protected DataObject GetColumnValue(int column, ISqlObject obj) {
            var type = TableInfo[column].ColumnType;
            return new DataObject(type, obj);
        }

        public void Dispose() {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        protected virtual void Dispose(bool disposing) {
            Context = null;
        }
    }
}