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我有一個表休眠負載同一行
canvastowidgets
{
idCanvas int PK
idWidgets int PK
version varchar
sequence int
position int
inPanelOrNot int
}
和映射XML如下
<hibernate-mapping>
<class name="com.config.canvas.CanvasHasWidget" table="canvastowidgets">
<id name="canvasId" type="int">
<column name="idCanvas" />
<generator class="assigned" />
</id>
<property name="widgetId" type="int">
<column name="idWidgets" />
</property>
<property name="sequence" type="int">
<column name="sequence" />
</property>
<property name="position" type="int">
<column name="position" />
</property>
<property name="inPanel" type="boolean">
<column name="inPanelOrNot" />
</property>
</class>
</hibernate-mapping>
當我執行查詢,如下
Query query = session.createQuery("from CanvasHasWidget where idCanvas = :id");
query.setParameter("id",canvas.getCanvasId());
return query.list();
查詢是
select canvashasw0_.idCanvas as idCanvas1_2_, canvashasw0_.idWidgets as idWidget2_2_, canvashasw0_.sequence as sequence3_2_, canvashasw0_.position as position4_2_, canvashasw0_.inPanelOrNot as inPanelO5_2_ from canvastowidgets canvashasw0_ where idCanvas=?
07:38:16822 TRACE BasicBinder:81 - 結合參數[1]爲[INTEGER] - [1]
07:38:16829 TRACE BasicExtractor:78 - 提取的值([idCanvas1_2_]:[INTEGER]) - [1] 07:38:16,835 TRACE BasicExtractor:78 - 提取值([idCanvas1_2_]:[INTEGER]) - [1] 07:38:16,840 TRACE BasicExtractor:78 - 提取值([idCanvas1_2_]:[INTEGER ]) - [1]
該列表返回3行,其中表中有3行。但返回的所有3行都是相同的。
時,您可以直接在數據庫中運行查詢,會發生什麼?選擇canvashasw0_.idCanvas作爲idCanvas1_2_,canvashasw0_.idWidgets作爲idWidget2_2_,canvashasw0_.sequence作爲sequence3_2_,canvashasw0_.position作爲position4_2_,canvashasw0_.inPanelOrNot作爲inPanelO5_2_從canvastowidgets canvashasw0_ where idCanvas =? – Kalyan
你表中的PK是一個雙(idCanvas,idWidgets),而你只映射其中的一個。這是什麼會導致問題。 –
@Javakid它返回3個不同的行不一樣 – chiranjeevigk