/// <summary>
/// 根据指定的队伍查询参数查询队伍句柄。
/// </summary>
/// <param name="query">查询参数。</param>
/// <returns>查询到的队伍句柄结果对象。</returns>
/// <exception cref="ArgumentNullException"/>
public ReadOnlyCollection <TeamHandle> QueryTeams(TeamQueryParameter query)
{
if (query == null)
{
throw new ArgumentNullException(nameof(query));
}
if (query.QueryByName && query.Name == null)
{
throw new ArgumentNullException(nameof(query.Name));
}
if (query.QueryByLeader && query.Leader == null)
{
throw new ArgumentNullException(nameof(query.Leader));
}
return(m_factory.WithContext(context =>
{
IQueryable <TeamProfileEntity> set = context.GetAllTeamProfiles();
if (query.QueryByName)
{
set = UserDataContext.QueryTeamProfileEntityByName(set, query.Name);
}
if (query.QueryByLeader)
{
set = UserDataContext.QueryTeamProfileEntityByLeader(set, query.Leader);
}
// 对查询结果进行排序以准备分页。
set = set.OrderBy(ent => ent.Id);
if (query.EnablePageQuery)
{
set = set.Page(query.PageQuery);
}
List <TeamHandle> handles = new List <TeamHandle>();
foreach (TeamProfileEntity ent in set)
{
handles.Add(TeamHandle.FromTeamEntity(ent));
}
return new ReadOnlyCollection <TeamHandle>(handles);
}));
}