MOXy DynamicJAXBContext control over href expansion

[robinroos]

[ copied to eclipselink from stackoverflow: https://stackoverflow.com/questions/79658708/moxy-dynamicjaxbcontext-control-over-href-expansion ]

I am migrating a use-case from XML -> SaticJAXB -> MongoDocument to XML -> DynamicJAXB -> MongoDocument

    DynamicJAXBContext dynamicContext = DynamicJAXBContextFactory.createContextFromXSD(xmlSchema, entityResolver, classLoader, properties);
    JAXBUnmarshaller unmarshaller = dynamicContext.createUnmarshaller();
    JAXBElement root = (JAXBElement) unmarshaller.unmarshal(xml);

Given a snipped of XML Schema below

<xsd:complexType name="ContactReference">
    <xsd:attribute name="href" type="xsd:IDREF" use="required">
        <xsd:annotation>
            <xsd:documentation>A reference to the @id value of contact/NamedPerson detailed elsewhere in this document.</xsd:documentation>
        </xsd:annotation>
    </xsd:attribute>
</xsd:complexType>

And a corresponding snipped of inbound XML containing href:

    <clientContact>
        <accountOfficer id="_1_39" type="RelationshipManager">
            <identifier name="Name">Robin Roos</identifier>
            <emailAddress>robin.roos@test.com</emailAddress>
        </accountOfficer>
        <primaryAccountOfficer href="_1_39"/>
    </clientContact>

The href is resolved as being an instance of accountOfficer.

I will use JSON/BSON representation below, but of course the MOXy code is not generating JSON/BSON (it is my backend which does so). JSON is a convenient way to represent what in MOXy terms would be an in-memory graph of DynamicEntity.

What I actually receive from MOXy is:

  "clientContact": {
    "accountOfficer": [
      {
        "identifier": [
          {
            "name": "Name",
            "value": "Robin Roos"
          }
        ],
        "emailAddress": "robin.roos@test.com",
        "id": "_1_39",
        "type": "RelationshipManager"
      }
    ],
    "primaryAccountOfficer": {
      "href": {
        "identifier": [
          {
            "name": "Name",
            "value": "Robin Roos"
          }
        ],
        "emailAddress": "robin.roos@test.com",
        "id": "_1_39",
        "type": "RelationshipManager"
      }
    }
  }
}

What I hope to achieve by disabling href expansion is:

  "clientContact": {
    "accountOfficer": [
      {
        "identifier": [
          {
            "name": "Name",
            "value": "Robin Roos"
          }
        ],
        "emailAddress": "robin.roos@test.com",
        "id": "_1_39",
        "type": "RelationshipManager"
      }
    ],
    "primaryAccountOfficer": {
      "href": "_1_39"
    }
  }
}

From my side this problem is tractable. My present work-around is to assume "href" always represents "href expansion": to observe the "href" DynamicElement and substitute its entire value with just the String value of the "id" property contained within its DynamicElementImpl.propertiesMap.

My preference, however, is to avail of a configuration switch by which href expansion can be disabled, thus no longer making assumptions based on the property names observed downstream from MOXy.