使用MOXY oxm绑定文件覆盖JAXB注释映射 [英] Override JAXB annotation Mapping with MOXY oxm binding file

问题描述

我正在尝试为我的某些对象实现两个不同的映射。

I'm trying to implement two differents mappings for certains of my objects.

第一个映射是在我的类上使用JAXB注释完成的。它运行正常。

The first mapping is done using JAXB annotations on my classes. It's working fine.

第二个映射非常简单：它应该采用每个Java属性。
要做到这一点，我写了一个非常简单的xml绑定文件：

The second mapping is really simple : it should take every Java attribute. To do this I wrote a very simple xml bindings file :

<?xml version="1.0"?>
<xml-bindings xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm"
package-name="com.foo" xml-mapping-metadata-complete="true">
<java-types>
    <java-type name="com.foo.OverridedMappingClass" xml-accessor-type="FIELD">
    </java-type>
    <java-type name="com.foo.OverridedMappingClass2" xml-accessor-type="FIELD">
    </java-type>
</java-types>
</xml-bindings>

当我尝试初始化JAXBContext时出现问题：

The problems come when I try to initialize the JAXBContext :

    Map<String, Object> props = new HashMap<String, Object>();
    List<String> bindings = new ArrayList<String>();
    bindings.add("com/bindings/bindings-foo.xml");
    props.put(JAXBContextProperties.OXM_METADATA_SOURCE, bindings);
    try
    {
        jaxbContext = JAXBContext.newInstance(new Class[] { OverridedMappingClass, OverridedMappingClass2}, props);
    }
    catch (JAXBException e)
    {
        m_logger.error("Could not build the JAXBContext", e);
    }

以下例外情况发生

javax.xml.bind.JAXBException: 24
 - with linked exception:
[java.lang.ArrayIndexOutOfBoundsException: 24]
at org.eclipse.persistence.jaxb.JAXBContext$TypeMappingInfoInput.createContextState(JAXBContext.java:1059)
at org.eclipse.persistence.jaxb.JAXBContext.<init>(JAXBContext.java:182)
at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:165)
at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:152)
at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:112)
at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:102)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:211)
at javax.xml.bind.ContextFinder.find(ContextFinder.java:340)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:574)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 24
at org.eclipse.persistence.internal.libraries.asm.Type.getType(Unknown Source)
at org.eclipse.persistence.internal.libraries.asm.Type.getArgumentTypes(Unknown Source)
at org.eclipse.persistence.internal.libraries.asm.MethodWriter.visitMaxs(Unknown Source)
at org.eclipse.persistence.jaxb.compiler.MappingsGenerator.generateMapEntryClass(MappingsGenerator.java:2003)
at org.eclipse.persistence.jaxb.compiler.MappingsGenerator.generateMapEntryClassAndDescriptor(MappingsGenerator.java:1941)
at org.eclipse.persistence.jaxb.compiler.MappingsGenerator.generateCompositeCollectionMapping(MappingsGenerator.java:2125)
at org.eclipse.persistence.jaxb.compiler.MappingsGenerator.generateMapping(MappingsGenerator.java:798)
at org.eclipse.persistence.jaxb.compiler.MappingsGenerator.generateMappings(MappingsGenerator.java:2464)
at org.eclipse.persistence.jaxb.compiler.MappingsGenerator.generateMappings(MappingsGenerator.java:2424)
at org.eclipse.persistence.jaxb.compiler.MappingsGenerator.generateProject(MappingsGenerator.java:246)
at org.eclipse.persistence.jaxb.compiler.Generator.generateProject(Generator.java:188)
at org.eclipse.persistence.jaxb.JAXBContext$TypeMappingInfoInput.createContextState(JAXBContext.java:1064)
at org.eclipse.persistence.jaxb.JAXBContext$TypeMappingInfoInput.createContextState(JAXBContext.java:1056)
... 19 more

有关信息：OverridedMappingClass类从另一个包扩展了一个抽象类。这个抽象类是JAXB注释的，我应该如何管理它？我是否必须为存在映射类的每个包编写XML，或者是否有办法在同一个文件中重新组合它？

For information : The classes OverridedMappingClass extend an abstract class from another package. This abstract class is JAXB annotated, how should I manage it ? Do I have to write an XML for every package where a mapped class exists or is there a way to regroup it in the same file ?

我正在使用eclipseLink-plugins中的以下3个捆绑包

I'm using the 3 following bundles from eclipseLink-plugins

org.eclipse.persistence.asm_3.3.1.v201302191223.jar
org.eclipse.persistence.core_2.6.0.v20130912-6b5e067.jar
org.eclipse.persistence.moxy_2.6.0.v20130912-6b5e067.jar

欢迎任何帮助！

推荐答案

您可以执行以下操作：

外部映射文件（bindings-foo.xml）：

External mapping file (bindings-foo.xml):

<?xml version="1.0"?>
<xml-bindings xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm"
    package-name="com.foo" xml-mapping-metadata-complete="true">
    <java-types>
        <java-type name="OverridedMappingClass"
            xml-accessor-type="FIELD">
        </java-type>
        <java-type name="OverridedMappingClass2"
            xml-accessor-type="FIELD">
        </java-type>
    </java-types>
</xml-bindings>

在外部映射文件上创建 JAXBContext 的代码：

Code to create JAXBContext on external mapping file:

    Map<String, Object> props = new HashMap<String, Object>(1);
    props.put(JAXBContextProperties.OXM_METADATA_SOURCE, "com/bindings/bindings-foo.xml");
    try
    {
        jaxbContext = JAXBContext.newInstance(new Class[] { OverridedMappingClass, OverridedMappingClass2}, props);
    }
    catch (JAXBException e)
    {
        m_logger.error("Could not build the JAXBContext", e);
    }

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