我正在使用NHibernate,并试图找出如何编写查询,搜索我的实体的所有名称,
并列出结果.举个简单的例子,我有以下几个对象;
并列出结果.举个简单的例子,我有以下几个对象;
public class Cat { public string name {get; set;} } public class Dog { public string name {get; set;} } public class Owner { public string firstname {get; set;} public string lastname {get; set;} }
事实上,我想创建一个查询,例如,它返回所有宠物主人,其名称包含“ted”,OR宠物的名称包含“ted”.
这是我想要执行的sql的示例:
SELECT TOP 10 d.*,c.*,o.* FROM owners AS o INNER JOIN dogs AS d ON o.id = d.ownerId INNER JOIN cats AS c ON o.id = c.ownerId WHERE o.lastname like '%ted%' OR o.firstname like '%ted%' OR c.name like '%ted%' OR d.name like '%ted%'
当我使用Criteria这样做时:
var criteria = session.CreateCriteria<Owner>() .Add( Restrictions.disjunction() .Add(Restrictions.Like("FirstName",keyword,MatchMode.Anywhere)) .Add(Restrictions.Like("LastName",MatchMode.Anywhere)) ) .CreateCriteria("Dog").Add(Restrictions.Like("Name",MatchMode.Anywhere)) .CreateCriteria("Cat").Add(Restrictions.Like("Name",MatchMode.Anywhere)); return criteria.List<Owner>();
SELECT TOP 10 d.*,o.* FROM owners AS o INNER JOIN dogs AS d ON o.id = d.ownerId INNER JOIN cats AS c ON o.id = c.ownerId WHERE o.lastname like '%ted%' OR o.firstname like '%ted%' AND d.name like '%ted%' AND c.name like '%ted%'
如何调整查询以使.CreateCriteria(“Dog”)和.CreateCriteria(“Cat”)生成OR而不是AND?
谢谢你的帮助.
解决方法
试试这个,它可能会奏效.
var criteria = session.CreateCriteria<Owner>() .Createalias("Dog","d") .Createalias("Cat","c") .Add( Restrictions.disjunction() .Add(Restrictions.Like("FirstName",MatchMode.Anywhere)) .Add(Restrictions.Like("LastName",MatchMode.Anywhere)) .Add(Restrictions.Like("c.Name",MatchMode.Anywhere)) .Add(Restrictions.Like("d.Name",MatchMode.Anywhere)) );
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