How to map Sharepoint JSON object with Uppercase letter to MOXy class?

Question

I'm using Apache Wink client with MOXy to make RESTful web service calls to Microsoft Sharepoint.

I'm close to completing my JSON/POJO mapping, but I'm stuck on 3 remaining elements: CreatedBy, ModifiedBy, and Attachments. All 3 objects have values of null when I inspect the Results objects in a debugger.

Here's the JSON response I'm trying to map:

{
"d": {
    "results": [
        {
            "__metadata": {
                "uri": "https://worksites.connect.somecompany.com/sites/UniversityRelations/_vti_bin/listdata.svc/UserInformationList(1)", 
                "etag": "W/\"63\"", 
                "type": "Microsoft.SharePoint.DataService.UserInformationListItem"
            }, 
            "ContentTypeID": "0x010A005977DE477030BD4EADA71E1A1B9F4069", 
            "Name": "Some name", 
            "Account": "Some account", 
            "WorkEMail": null, 
            "MobilePhone": null, 
            "AboutMe": null, 
            "SIPAddress": null, 
            "IsSiteAdmin": true, 
            "Deleted": false, 
            "Picture": null, 
            "Department": null, 
            "Title": null, 
            "FirstName": "Some first name", 
            "LastName": "Some last name", 
            "WorkPhone": null, 
            "UserName": "Some username", 
            "WebSite": null, 
            "AskMeAbout": null, 
            "Office": null, 
            "Id": 1, 
            "ContentType": "Person", 
            "Modified": "\/Date(1384765618000)\/", 
            "Created": "\/Date(1372051813000)\/", 
            "CreatedBy": {
                "__deferred": {
                    "uri": "https://worksites.connect.somecompany.com/sites/UniversityRelations/_vti_bin/listdata.svc/UserInformationList(1)/CreatedBy"
                }
            }, 
            "CreatedById": 1, 
            "ModifiedBy": {
                "__deferred": {
                    "uri": "https://worksites.connect.somecompany.com/sites/UniversityRelations/_vti_bin/listdata.svc/UserInformationList(1)/ModifiedBy"
                }
            }, 
            "ModifiedById": 1073741823, 
            "Owshiddenversion": 63, 
            "Version": "1.0", 
            "Attachments": {
                "__deferred": {
                    "uri": "https://worksites.connect.somecompany.com/sites/UniversityRelations/_vti_bin/listdata.svc/UserInformationList(1)/Attachments"
                }
            }, 
            "Path": "/sites/UniversityRelations/_catalogs/users"
        }]
    }
}

Here's my Results class:

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

/**
 *
 * @author Chris Harris
 */
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)  <!-- Allows the __Metadata class to be mapped -->
public class Results {
    private __Metadata __metadata;
    @XmlAttribute(name="ContentTypeID")
    private String contentTypeID;
    @XmlAttribute(name="Name")
    private String name;
    @XmlAttribute(name="Account")
    private String account;
    @XmlAttribute(name="WorkEMail")
    private String workEMail;
    @XmlAttribute(name="MobilePhone")
    private String mobilePhone;
    @XmlAttribute(name="AboutMe")
    private String aboutMe;
    @XmlAttribute(name="SIPAddress")
    private String sIPAddress;
    @XmlAttribute(name="IsSiteAdmin")
    private String isSiteAdmin;
    @XmlAttribute(name="Deleted")
    private String deleted;
    @XmlAttribute(name="Picture")
    private String picture;
    @XmlAttribute(name="Department")
    private String department;
    @XmlAttribute(name="Title")
    private String title;
    @XmlAttribute(name="FirstName")
    private String firstName;
    @XmlAttribute(name="LastName")
    private String lastName;
    @XmlAttribute(name="WorkPhone")
    private String workPhone;
    @XmlAttribute(name="UserName")
    private String userName;
    @XmlAttribute(name="WebSite")
    private String webSite;
    @XmlAttribute(name="AskMeAbout")
    private String askMeAbout;
    @XmlAttribute(name="Office")
    private String office;
    @XmlAttribute(name="Id")
    private String id;
    @XmlAttribute(name="ContentType")
    private String contentType;
    @XmlAttribute(name="Modified")
    private String modified;
    @XmlAttribute(name="Created")
    private String created;
    @XmlAttribute(name="CreatedBy")
    private CreatedBy createdBy;
    @XmlAttribute(name="CreatedById")
    private String createdById;
    @XmlAttribute(name="ModifiedBy")
    private ModifiedBy modifiedBy;
    @XmlAttribute(name="ModifiedById")
    private String modifiedById;
    @XmlAttribute(name="Owshiddenversion")
    private String owshiddenversion;
    @XmlAttribute(name="Version")
    private String version;
    @XmlAttribute(name="Attachments")
    private Attachments attachments;
    @XmlAttribute(name="Path")
    private String path;
}

Since the CreatedBy, ModifiedBy, and Attachments classes are currently configured the same way, here's just my CreatedBy class:

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlRootElement;

/**
 *
 * @author Chris Harris
 */
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class CreatedBy {
    private __Deferred __deferred;

    public __Deferred getDeferred() {
        return __deferred;
    }

    public void setDeferred(__Deferred __deferred) {
        this.__deferred = __deferred;
    }
}

How can I map CreatedBy, ModifiedBy, and Attachments?

Answer 1

Currently you have everything on the Results class mapped with @XmlAttribute. @XmlAttribute should only be used for simple properties (i.e. String, int, byte[]) or domain objects with one field/property mapped with @XmlValue. You should change your mapping to be:

@XmlElement(name="ModifiedBy")
private ModifiedBy modifiedBy;

Also unless you are also marshalling this object model to XML I would change all your @XmlAttribute mappings to @XmlElement.