hyperjaxb3 xsd：JPA 实体中的字符串长度

发布于 2024-09-19 02:31:17 字数 1608 浏览 3 评论 0原文

我使用 Hyperjaxb3 从 XSD 架构生成 JPA 实体。我有一个 xsd:string 类型，我想将其用于描述文本（UI 中的文本区域）：

<xsd:complexType name="Description">
    <xsd:simpleContent>
        <xsd:extension base="**xsd:string**">
            <xsd:attribute name="abc" type="xsd:NCName" use="optional" />
        </xsd:extension>
    </xsd:simpleContent>
</xsd:complexType>

Hyperjaxb3 生成带有属性值的类（实体）描述，注释如下：

@Basic
@Column(name = "VALUE_", **length = 255**)
public String getValue() {
    return value;
}

我有的问题：

我看到如果我把 xsd :maxLength 对 xsd:simpleType 的限制，JPA @Column.length 的值为 maxLength。如何在 xsd:simpleContent（即 xsd:string 的 xsd:extension）上设置 xsd:rescricion？我是否必须使用要扩展的 xsd:restriction 定义复杂类型？如果是的话，Hyperjaxb 会根据我的限制生成 @Column.length 吗？我尝试了以下操作：

   <xsd:simpleType name="DescriptionParent">
  <xsd:restriction base="xsd:string">
            <xsd:maxLength value="4096" />
  </xsd:restriction>
    </xsd:simpleType>
    <xsd:complexType name="Description">
        <xsd:simpleContent>
            <xsd:extension base="DescriptionParent">
                <xsd:attribute name="abc" type="xsd:NCName" use="optional" />
            </xsd:extension>
        </xsd:simpleContent>
    </xsd:complexType>

但是 JPA 列长度仍然是 255。

是否也可以在我的 JAXB 自定义（*.xjb 文件）中设置给定类型的列长度（以某种方式让 hyperjaxb 知道这是我想要的 orm用于我的特定类型）？或者它完全不碍事，应该使用 xsd:maxLength （上面）我设法在全局范围内设置它以进行 Hyperjaxb 定制：

<强>

感谢您的帮助。

原文

I use Hyperjaxb3 to generate JPA entities from XSD schema. I have a xsd:string type that I want to use for description text (text area in the UI):

<xsd:complexType name="Description">
    <xsd:simpleContent>
        <xsd:extension base="**xsd:string**">
            <xsd:attribute name="abc" type="xsd:NCName" use="optional" />
        </xsd:extension>
    </xsd:simpleContent>
</xsd:complexType>

Hyperjaxb3 generates class (entity) Description with attribute value, annotated like this:

@Basic
@Column(name = "VALUE_", **length = 255**)
public String getValue() {
    return value;
}

The questions I have:

I saw that if I put xsd:maxLength restriction on xsd:simpleType, JPA @Column.length has the value of maxLength. How can I set xsd:rescriction on xsd:simpleContent that is xsd:extension of xsd:string? Do I have to define a complexType with xsd:resctriction that I will extend? And if yes, will Hyperjaxb generate @Column.length by my restriction. I tried following:

   <xsd:simpleType name="DescriptionParent">
  <xsd:restriction base="xsd:string">
            <xsd:maxLength value="4096" />
  </xsd:restriction>
    </xsd:simpleType>
    <xsd:complexType name="Description">
        <xsd:simpleContent>
            <xsd:extension base="DescriptionParent">
                <xsd:attribute name="abc" type="xsd:NCName" use="optional" />
            </xsd:extension>
        </xsd:simpleContent>
    </xsd:complexType>

But the JPA column length is still 255.

Is it also possible to set in my JAXB customization (*.xjb file) the lenght of the column for given type (somehow let hyperjaxb know that this is the orm I want to use for my specific type)? Or is it totally out of the way and xsd:maxLength should be used (above) I managed to set it globally for Hyperjaxb customization:

Thanks for your help.

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