我使用FluentNHibernate和LINQ to NHibernate的,与这些实体(仅相关部分):NHibernate.QueryException:无法解析属性
public class Player : BaseEntity<Player>
{
private readonly IList<PlayerInTeam> allTeams = new List<PlayerInTeam>();
public IEnumerable<Team> Teams
{
get
{
return from playerInTeam in allTeams
where playerInTeam.Roster.Match == null
select playerInTeam.Roster.Team;
}
}
}
public class PlayerInTeam : BaseEntity<PlayerInTeam>
{
public int PlayerNumber { get; set; }
public Player Player { get; set; }
public Position Position { get; set; }
public Roster Roster { get; set; }
}
public class Roster : BaseEntity<Roster>
{
private readonly IList<PlayerInTeam> players = new List<PlayerInTeam>();
public Team Team { get; set; }
public IEnumerable<PlayerInTeam> Players { get { return players; } }
}
public class Team : BaseEntity<Team>
{
private readonly IList<Roster> allRosters = new List<Roster>();
public Team(string name, Sex sex)
{
allRosters.Add(new Roster(this));
}
public Roster DefaultRoster
{
get { return allRosters.Where(r => r.Match == null).First(); }
}
}
和匹配映射:
public class PlayerMap : ClassMap<Player>
{
public PlayerMap()
{
HasMany<PlayerInTeam>(Reveal.Member<Player>("allTeams"))
.Inverse()
.Cascade.AllDeleteOrphan()
.Access.CamelCaseField();
}
}
public class PlayerInTeamMap : ClassMap<PlayerInTeam>
{
public PlayerInTeamMap()
{
References(pit => pit.Player)
.Not.Nullable();
References(pit => pit.Roster)
.Not.Nullable();
}
}
public class RosterMap : ClassMap<Roster>
{
public RosterMap()
{
References(tr => tr.Team)
.Not.Nullable();
HasMany<PlayerInTeam>(Reveal.Member<Roster>("players"))
.Inverse()
.Cascade.AllDeleteOrphan()
.Access.CamelCaseField();
}
}
public class TeamMap : ClassMap<Team>
{
public TeamMap()
{
HasMany<Roster>(Reveal.Member<Team>("allRosters"))
.Inverse()
.Cascade.AllDeleteOrphan()
.Access.CamelCaseField();
}
}
我有这个资源库方法:
public IEnumerable<Player> PlayersNotInTeam(Team team)
{
return from player in Session.Linq<Player>()
where !player.Teams.Contains(team)
select player;
}
,给了我这样的例外:NHibernate.Que ryException:无法解析属性:团队:Emidee.CommonEntities.Player [.Where(NHibernate.Linq.NhQueryable`1 [Emidee.CommonEntities.Player],Quote((player,)=>(Not(.Contains(player。队,P1)))))]
我看了HBM的文件中,通过功能NHibernate产生,有关球员,这里是我所得到的:
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" default-access="property" auto-import="true" default-cascade="none" default-lazy="true">
<class xmlns="urn:nhibernate-mapping-2.2" mutable="true" name="Emidee.CommonEntities.Player, Emidee.CommonEntities, Version=1.0.0.0, Culture=neutral, PublicKeyToken=65c7ad487c784bec" table="Players">
<id name="Id" type="System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<column name="Id" />
<generator class="increment" />
</id>
<bag access="field.camelcase" cascade="all-delete-orphan" inverse="true" name="allTeams" mutable="true">
<key>
<column name="Player_id" not-null="true" />
</key>
<one-to-many class="Emidee.CommonEntities.PlayerInTeam, Emidee.CommonEntities, Version=1.0.0.0, Culture=neutral, PublicKeyToken=65c7ad487c784bec" />
</bag>
</class>
</hibernate-mapping>
事实上,我在该文件中没有球员属性。
但我的地图不应该照顾这个吗? 你认为这个问题在哪里?
在此先感谢
迈克
你会推荐我做什么? – Mike 2010-07-12 15:35:14
'公共IList的 PlayersNotInTeam(队队) { 回报Session.Linq () 。凡(名单=> roster.Team!=队) 。选择(名单=> roster.Players) 。选择(playerInTeam => playerInTeam.Player) .Distinct() .ToList() }' 编辑:我无法格式化评论中的代码? 我可以有更多的选择。最好的选择取决于你的应用程序如何使用你的域名。这就是为什么我不能推荐什么是你最好的选择。 –
Paco
2010-07-12 20:56:03
感谢您的代码,但我无法完成工作。 我已经使用HQL,经过一些研究后,我可以做到。 – Mike 2010-07-13 15:23:06