CSRelation.cs :  » Persistence-Frameworks » Vici-CoolStorage » Vici » CoolStorage » C# / CSharp Open Source

#region License
//=============================================================================
// Vici CoolStorage - .NET Object Relational Mapping Library 
//
// Copyright (c) 2004-2009 Philippe Leybaert
//
// Permission is hereby granted, free of charge, to any person obtaining a copy 
// of this software and associated documentation files (the "Software"), to deal 
// in the Software without restriction, including without limitation the rights 
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
// copies of the Software, and to permit persons to whom the Software is 
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in 
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//=============================================================================
#endregion

using System;

namespace Vici.CoolStorage{
  internal enum CSSchemaRelationType
  {
    None ,
    OneToMany ,
    ManyToOne,
    OneToOne,
    ManyToMany
  }

  internal class CSRelation
  {
        private readonly CSSchema _schema;

    internal RelationAttribute Attribute;
        
    internal string LocalKey;
    internal string ForeignKey;

    internal string LocalLinkKey;   // for many-to-many relations
    internal string ForeignLinkKey; // for many-to-many relations
    internal string LinkTable;      // for many-to-many relations
    internal bool   PureManyToMany;

    internal Type ForeignType;

    internal CSSchemaRelationType RelationType = CSSchemaRelationType.None;

        internal CSSchema Schema
        {
            get
            {
                return _schema;
            }
        }

    internal CSRelation(CSSchema schema, RelationAttribute att)
    {
            _schema = schema;

      Attribute = att;
    }

    internal CSSchema ForeignSchema
    {
      get
      {
        return CSSchema.Get(ForeignType);
      }
    }
  }
}