NHIBERNATE从Criteriaquery命名为>需要帮助
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26-10-2019 - |
题
我正在尝试将工作条件查询转换为命名查询,而不是正确的语法。 HQL版本显然需要指定的类型和ID参数。
查询是在映射的类上(也下面)的类
有人可以给我一个人的语法吗?
干杯,
贝里尔
工作标准查询
result = _session
.CreateCriteria<Allocation>()
.Add(Restrictions.Eq(propName_Resource, resource))
.Add(Restrictions.Between(propName_StartTime, (DateTime)searchRange.Start, (DateTime)searchRange.End))
.AddOrder(Order.Asc(propName_StartTime))
.List<Allocation>();
produces
SELECT this_.AllocationId as Allocati1_2_0_, this_.ResourceType as Resource2_2_0_, this_.ResourceId as ResourceId2_0_, this_.ActivityType as Activity4_2_0_,
this_.ActivityId as ActivityId2_0_, this_.StartTime as StartTime2_0_, this_.EndTime as EndTime2_0_, this_.PostingTime as PostingT8_2_0_
FROM Allocations this_
WHERE this_.ResourceType = @p0 and this_.ResourceId = @p1 and this_.StartTime between @p2 and @p3 ORDER BY this_.StartTime asc;@p0 = 'EMPLOYEE' [Type: String (0)], @p1 = 98304 [Type: Int32 (0)], @p2 = 3/14/2011 12:00:00 AM [Type: DateTime (0)], @p3 = 3/20/2011 11:59:59 PM [Type: DateTime (0)] 2011-03-14 Mon - 2011-03-20 Sun
任何映射(有效!)
<any name="Resource" cascade="all" id-type="System.Int32" meta-type="System.String"
>
<meta-value value="EMPLOYEE" class="Employee, ..." />
<meta-value value="Facility" class="Facility, ..." />
<column name="ResourceType"/>
<column name="ResourceId"/>
</any>
到目前为止命名查询(不工作)
我 思考 这是HQL语法,但错误消息说丢失了参数
....
select a
from Allocation a
where a.Resource = :resource
and a.TimeRange.StartTime between :periodStart and :periodEnd
order by a.TimeRange.StartTime
....
return _session.GetNamedQuery("FetchByResourceForDateRange")
.SetEntity("resource", resource)
.SetDateTime("periodStart", searchRange.Start)
.SetDateTime("periodEnd", searchRange.End)
.List<Allocation>();
NHibernate.Exceptions.GenericADOException : could not execute query
[ select allocation0_.AllocationId as Allocati1_2_, allocation0_.ResourceType as Resource2_2_, allocation0_.ResourceId as ResourceId2_, allocation0_.ActivityType as Activity4_2_, allocation0_.ActivityId as ActivityId2_, allocation0_.StartTime as StartTime2_, allocation0_.EndTime as EndTime2_, allocation0_.PostingTime as PostingT8_2_ from Allocations allocation0_ where allocation0_.ResourceType=@p0 and allocation0_.ResourceId=@p1 and (allocation0_.StartTime between @p2 and @p3) order by allocation0_.StartTime ]
Name:resource - Value:George Washington 000001 Name:periodStart - Value:3/14/2011 12:00:00 AM Name:periodEnd - Value:3/20/2011 11:59:59 PM
[SQL: select ...
from Allocations allocation0_
where allocation0_.ResourceType=@p0 and allocation0_.ResourceId=@p1 and (allocation0_.StartTime between @p2 and @p3)
order by allocation0_.StartTime]
----> System.Data.SQLite.SQLiteException : SQLite error
Insufficient parameters supplied to the command
更新
该组合执行,但给出了错误的答案。无法确定它是否离我需要的东西更近或更远
select a
from Allocation a
where a.Resource.class = :class and a.Resource.id = :id
and a.TimeRange.StartTime between :periodStart and :periodEnd
order by a.TimeRange.StartTime
return _session.GetNamedQuery("FetchByResourceForDateRange")
.SetString("class", typeof(Resource).FullName)
.SetInt32("id", resource.Id)
.SetDateTime("periodStart", searchRange.Start)
.SetDateTime("periodEnd", searchRange.End)
.List<Allocation>();
解决方案
好的,per fabio maulo,nhish的领导:
“您必须使用元数据值而不是类型(实体)。fullname”
因此,就我而言,以下是我工作的最后一个HQL:
return _session.GetNamedQuery("FetchByResourceForDateRange")
.SetString("class", "EMPLOYEE")
.SetInt32("id", resource.Id)
.SetDateTime("periodStart", searchRange.Start)
.SetDateTime("periodEnd", searchRange.End)
.List<Allocation>();
比我希望的要丑陋一些,但我会接受: - )
hth,
贝里尔
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