ntpa/MySql/Source/MySql.Data.Entity/Fragments/JoinFragment.cs

// Copyright © 2008, 2014, Oracle and/or its affiliates. All rights reserved.
//
// MySQL Connector/NET is licensed under the terms of the GPLv2
// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most 
// MySQL Connectors. There are special exceptions to the terms and 
// conditions of the GPLv2 as it is applied to this software, see the 
// FLOSS License Exception
// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
//
// This program is free software; you can redistribute it and/or modify 
// it under the terms of the GNU General Public License as published 
// by the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful, but 
// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 
// for more details.
//
// You should have received a copy of the GNU General Public License along 
// with this program; if not, write to the Free Software Foundation, Inc., 
// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA

using System.Text;
using System.Diagnostics;

namespace MySql.Data.Entity
{
  class JoinFragment : InputFragment
  {
    public SqlFragment Condition;
    public string JoinType;

    public override void WriteInnerSql(StringBuilder sql)
    {
      Left.WriteSql(sql);
      sql.AppendFormat(" {0} ", JoinType);
      Right.WriteSql(sql);
      if (Condition != null)
      {
        sql.Append(" ON ");
        Condition.WriteSql(sql);
      }
    }

    //public override void WriteSql(StringBuilder sql)
    //{
    //    // we don't want our join to write out its name
    //    string name = Name;
    //    Name = null;
    //    base.WriteSql(sql);
    //    Name = name;
    //}

    internal override void Accept(SqlFragmentVisitor visitor)
    {
      base.Accept(visitor);
      if (Condition != null)
        Condition.Accept(visitor);
      visitor.Visit(this);
    }
  }
}