EclipseLink动态MOXy访问枚举值 [英] EclipseLink dynamic MOXy accessing enum values

问题描述

我正在使用下面列出的XSD和相应的XML。一切都适用于动态MOXy ，但我不知道如何访问java中的枚举类型。
任何建议？
感谢您的帮助。

 <？xml version =1.0encoding =UTF-8？> ; 
< xs：schema ...> 
< xs：element name =person> 
< xs：complexType> 
< xs：sequence> 
< xs：element name =first-nametype =xs：string/> 
< xs：element name =last-nametype =xs：string/> 
< xs：element name =quadranttype =myns：compass-direction/> 
< / xs：sequence> 
< / xs：complexType> 
< / xs：element> 
 
< xs：simpleType name =compass-direction> 
< xs：restriction base =xs：string> 
< xs：枚举值=NORTH/> 
< xs：枚举值=SOUTH/> 
< xs：枚举值=EAST/> 
< xs：枚举值=WEST/> 
< / xs：restriction> 
< / xs：simpleType> 
 
< / xs：schema> 
 
 // JAVA代码
 DynamicEntity person =（DynamicEntity）dynamicJAXBContext.createUnmarshaller（）。unmarshal（instanceDoc）; 
 String firstName = person.get（firstName）; 
 String lastName = person.get（lastName）; 
 //直到这里它工作得很好
 
 //但现在：如何获取并设置象限的值？ 
 //以下行不起作用
 String quadrant = person.get（quadrant）; 
 person.set（quadrant，NORTH）; 
  

解决方案

要使用枚举值进行set（）操作，您需要先查找枚举常量使用DynamicJAXBContext.getEnumConstant（），然后使用该集合。例如：

 对象NORTH = ctx。 getEnumConstant（your.package.CompassDirection，NORTH）; 
 person.set（quadrant，NORTH）; 
  

要获取该值，您正在调用正确的代码，但返回的值不会是一个String，它将与该String相关联的实际枚举值对象应该使用： / p>

 对象象限= person.get（象限）; 
  

希望这有帮助，

Rick

I'm using the XSD listed below and a corresponding XML. Everything works well with dynamic MOXy but I haven't any idea how to access the enum type within java. Any suggestions? Thanks for help.

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema ...>
     <xs:element name="person">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="first-name" type="xs:string"/>
                <xs:element name="last-name" type="xs:string"/>
                <xs:element name="quadrant" type="myns:compass-direction"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>

    <xs:simpleType name="compass-direction">
        <xs:restriction base="xs:string">
            <xs:enumeration value="NORTH"/>
            <xs:enumeration value="SOUTH"/>
            <xs:enumeration value="EAST"/>
            <xs:enumeration value="WEST"/>
        </xs:restriction> 
    </xs:simpleType>

</xs:schema>

//JAVA code
DynamicEntity person = (DynamicEntity) dynamicJAXBContext.createUnmarshaller().unmarshal(instanceDoc);
String firstName = person.get("firstName");
String lastName = person.get("lastName");
//until here it works well

//but now: how to get and set the value of the "quadrant"?
// following lines do not work
String quadrant=person.get("quadrant);
person.set("quadrant","NORTH");

解决方案

To use an enum value for a set() operation, you need to first look up the enum constant using DynamicJAXBContext.getEnumConstant(), and then use that for the set. For example:

Object NORTH = ctx.getEnumConstant("your.package.CompassDirection", "NORTH");
person.set("quadrant", NORTH);

To get the value, you are calling the correct code, but the value that comes back will not be a String, it will the actual enum value Object associated with that String. You should use:

Object quadrant = person.get("quadrant");

Hope this helps,

Rick

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