Question

给定一个属性为private List<Base> items且Base属于abstract类的根类：

// omitted properties, Constructor, Getter, Setter, etc.

@Entity
@XmlRootElement(name = "ROOT")
@XmlAccessorType(XmlAccessType.FIELD)
public class Root implements Serializable {

    @OneToMany(cascade = CascadeType.ALL)
    @JoinTable(name = "ROOT_TO_BASE", joinColumns = {
        @JoinColumn(name = "PARENT_ROOT_ID") }, inverseJoinColumns = {
        @JoinColumn(name = "BASE_ID") })
    @XmlElementWrapper(name = "ITEMS")
    @XmlElements({ @XmlElement(name = "FOO", type = Foo.class),
            @XmlElement(name = "BAR", type = Bar.class) })
    private List<Base> items;

@Entity
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
@XmlSeeAlso({ Foo.class, Bar.class })
public class Base implements Serializable {

    @XmlElement(name = "BASE-NAME")
    private String baseName;

}

Root <base-url>/persistence/PU/entity/Root/123实体的预期输出应如下所示：

<?xml version="1.0" encoding="UTF-8"?>
<ROOT ID="123">
    <ITEMS>
        <_link href="<base-url>/persistence/PU/entity/Foo/6" method="GET" rel="self" />
        <_link href="<base-url>/persistence/PU/entity/Bar/7" method="GET" rel="self" />
    </ITEMS>
    <_relationships>
        <_link href="<base-url>/persistence/PU/entity/Root/123/items" rel="items"/>
    </_relationships>
</ROOT>

但实际上它看起来像这样：

<?xml version="1.0" encoding="UTF-8"?>
<ROOT ID="123">
    <ITEMS/>
    <_relationships>
        <_link href="<base-url>/persistence/PU/entity/Root/123/items" rel="items"/>
    </_relationships>
</ROOT>

这些元素可以在提供的网址上找到，但对我而言，这与通常的JPA-RS模型不一致。
问题：这是一个bug还是用于继承的类？

我正在使用EL 2.5.1.v20130918

JPA-RS中的继承和列表：项目未显示在预期的父元素中

0 个答案: