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added condition to lazy loading of relationship objects

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no db calls will be made if foreign key is 0.
This commit is contained in:
kay.one
2013-05-21 22:30:54 -07:00
parent f5a68782ce
commit 28b47b415f
4 changed files with 56 additions and 34 deletions
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5
Marr.Data/Mapping/RelationshipBuilder.cs
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@@ -62,12 +62,13 @@ namespace Marr.Data.Mapping
/// </summary>
/// <typeparam name="TChild"></typeparam>
/// <param name="query"></param>
/// <param name="condition">condition in which a child could exist. eg. avoid call to db if foreign key is 0 or null</param>
/// <returns></returns>
public RelationshipBuilder<TEntity> LazyLoad<TChild>(Func<IDataMapper, TEntity, TChild> query)
public RelationshipBuilder<TEntity> LazyLoad<TChild>(Func<IDataMapper, TEntity, TChild> query, Func<TEntity, bool> condition = null)
{
AssertCurrentPropertyIsSet();
Relationships[_currentPropertyName].LazyLoaded = new LazyLoaded<TEntity, TChild>(query);
Relationships[_currentPropertyName].LazyLoaded = new LazyLoaded<TEntity, TChild>(query, condition);
return this;
}