SingleTypePropertyInfoImpl.java 文件源码

public void link() {
    super.link();

    if (!(NonElement.ANYTYPE_NAME.equals(type.getTypeName()) || type.isSimpleType() || id()==ID.IDREF)) {
            parent.builder.reportError(new IllegalAnnotationException(
            Messages.SIMPLE_TYPE_IS_REQUIRED.format(),
            seed
        ));
    }

    if(!isCollection() && seed.hasAnnotation(XmlList.class)) {
        parent.builder.reportError(new IllegalAnnotationException(
            Messages.XMLLIST_ON_SINGLE_PROPERTY.format(), this
        ));
    }
}