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几乎是 jaxb 的新手，试图用 xjc (jdk 8) 将 PLMXMLSchema.xsd 绑定到 java 类。

这是架构的摘录

<xsd:complexType name="ProductType">
<xsd:annotation>
  <xsd:documentation>
  This is the revision-independent Product, derived from Structure.
  It corresponds to the STEP 'product'.
  
  Attributes:
  
  productId:        The identifier of the Product, unique in some context, e.g. an 
                    Organisation.
  alternateForRef:  An 'alternate' Product is one which is substitutable, in all 
                    contexts, for a particular Product. If this is an 'alternate'
                    Product, then this attribute references the Product for which
                    this is an alternate.
  unitRef:          The default Unit for the 'quantity' attribute of any referencing
                    ProductInstance elements.
  designRequired:   true if all the revisions of this Product must have
                    at least one associated DesignRevision
  source:           whether the Product is manufactured or bought-in
  vendorRef:        References the Vendor when the Product represents a
                    vendor part.
  </xsd:documentation>
</xsd:annotation>
<xsd:complexContent>
  <xsd:extension base="plm:StructureBase">
    <xsd:attribute name="productId" type="xsd:string" use="optional"/>
    <xsd:attribute name="alternateForRef" type="plm:anyURIType" use="optional" plm:refType="plm:Product"/>
    <xsd:attribute name="unitRef" type="plm:anyURIType" use="optional" plm:refType="plm:Unit"/>
    <xsd:attribute name="designRequired" type="xsd:boolean" default="true"/>
    <xsd:attribute name="source" type="plm:ProductSourceEnum" use="optional"/>
    <xsd:attribute name="vendorRef" type="plm:anyURIType" use="optional" plm:refType="plm:Vendor"/>
  </xsd:extension>
</xsd:complexContent>
</xsd:complexType>
<xsd:element name="Product" type="plm:ProductType" substitutionGroup="plm:Structure"/>

第一点

xjc 编译器构建类ProductType.java，但我更喜欢Product.java。这只是一个示例，因为架构始终使用命名约定“FooType”和我更喜欢摆脱的“Type”后缀。使用此处建议的“简单”绑定https://stackoverflow.com/a/4818344/2668213似乎没有效果..

第二点

架构中的属性

<xsd:attribute name="alternateForRef" type="plm:anyURIType" use="optional" plm:refType="plm:Product"/>

被翻译成

@XmlAttribute(name = "alternateForRef")
protected String alternateForRef;

但我非常喜欢

@XmlAttribute(name = "alternateForRef")
@XmlIDREF
protected Product alternateForRef;

这种模式在模式中始终适用，其中一些属性是plm:refType类的 idref。所以我希望应该有一个（外部绑定？）解决方案来一次解决所有这些情况。

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