如何在休眠映射中配置列表？

Question

I'm using Hibernate mapping to config stages in my application. It's configured that the necessary class (here called Configurator) is injected with the stages.

I have one list containing Object Score:

private List<Score>dsScore = new ArrayList<Score>(0);

I have a database containing table Score and a list in class Student and student.hbm.xml as:

 `<list name ="dsScore" table="SCORE">
                <key> 
                    <column name="SCORE_ID" not-null="true"></column>
                </key>
                <one-to-many class="model.Score"/>      
            </list>`

into a file config Student containing it, it not work. Can anybody help me with this?

Answer 1

1. list hibernate type is collection with persisted ordering. It requires explicit mapped column in underlying table for ordering, so your mapping is missing <index>/<list-index> element. OR you should use bag (maybe with order-by attribute) to get collection mapped to java List without persisting order. See docs
2. Use package attribute on <hibernate-mapping> instead of qualified class name.

I assume that both Student and Score classes are in model package. The mapping then should look like

<hibernate-mapping package="model">
    <class name="Student" table="...">
        ...
        <bag name="dsScore" table="Score" order-by="...">
            <key column="SCORE_ID" />
            <one-to-many class="Score" />
        </bag>
    </class>
</hibernate-mapping>