Sonarr/Marr.Data/Mapping/Relationship.cs

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/* Copyright (C) 2008 - 2011 Jordan Marr
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library. If not, see <http://www.gnu.org/licenses/>. */
using System;
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using System.Collections;
using System.Reflection;
using Marr.Data.Reflection;
namespace Marr.Data.Mapping
{
public class Relationship
{
public Relationship(MemberInfo member)
: this(member, new RelationshipInfo())
{ }
public Relationship(MemberInfo member, IRelationshipInfo relationshipInfo)
{
Member = member;
MemberType = ReflectionHelper.GetMemberType(member);
// Try to determine the RelationshipType
if (relationshipInfo.RelationType == RelationshipTypes.AutoDetect)
{
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if (typeof(ICollection).IsAssignableFrom(MemberType))
{
relationshipInfo.RelationType = RelationshipTypes.Many;
}
else
{
relationshipInfo.RelationType = RelationshipTypes.One;
}
}
// Try to determine the EntityType
if (relationshipInfo.EntityType == null)
{
if (relationshipInfo.RelationType == RelationshipTypes.Many)
{
if (MemberType.IsGenericType)
{
// Assume a Collection<T> or List<T> and return T
relationshipInfo.EntityType = MemberType.GetGenericArguments()[0];
}
else
{
throw new ArgumentException(string.Format(
"The DataMapper could not determine the RelationshipAttribute EntityType for {0}.",
MemberType.Name));
}
}
else
{
relationshipInfo.EntityType = MemberType;
}
}
RelationshipInfo = relationshipInfo;
Setter = MapRepository.Instance.ReflectionStrategy.BuildSetter(member.DeclaringType, member.Name);
}
public IRelationshipInfo RelationshipInfo { get; private set; }
public MemberInfo Member { get; private set; }
public Type MemberType { get; private set; }
public bool IsLazyLoaded
{
get
{
return LazyLoaded != null;
}
}
public ILazyLoaded LazyLoaded { get; set; }
public GetterDelegate Getter { get; set; }
public SetterDelegate Setter { get; set; }
}
}