datamodel for qm

Hi
I'm trying to modify the datamodel for cm to fit qm. I'm looking at the OSLC workshop.
This is what I've written. Does it look correct?

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package net.jazz.oslc.cm.datamodel;

import java.io.IOException;
import java.io.Writer;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

public class TestPlan {
    String uri;
    String dcTitle;
    String dcIdentifier;
    String dcType;
    String dcDescription;
    String dcSubject;
    String dcCreator;
    Date dcModified;
    
    static final String CM_TITLE = "dcterms:title";
    static final String CM_IDENTIFIER = "dcterms:identifier";
    static final String CM_TYPE = "dcterms:type";
    static final String CM_DESCRIPTION = "dcterms:description";
    static final String CM_SUBJECT = "dcterms:subject";
    static final String CM_CREATOR = "dcterms:creator";
    static final String CM_MODIFIED = "dcterms:modified";
    static final String CM_ABOUT = "rdf:about";
    
    //static SimpleDateFormat RFC3339Format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
    //static SimpleDateFormat RFC3339DecFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSSSS'Z'");
    /**
     * Creates a Test Plan based on the DOM structure
     */
    public TestPlan(String uri, Element element) {
        super();
        this.uri = uri;
        this.dcTitle = getChildContent(element, CM_TITLE);
        this.dcIdentifier = getChildContent(element, CM_IDENTIFIER);
        this.dcType = getChildContent(element, CM_TYPE);
        this.dcDescription = getChildContent(element, CM_DESCRIPTION);
        this.dcSubject = getChildContent(element, CM_SUBJECT);
        this.dcCreator = getChildContent(element, CM_CREATOR);
        /*String dateString = getChildContent(element, CM_MODIFIED);
        try {
            this.dcModified = RFC3339Format.parse(dateString);
        } catch (ParseException e) {
            //try again with optional decimals
            //RFC3339DecFormat.setLenient(true);
            try {
                this.dcModified = RFC3339DecFormat.parse(dateString);
            } catch (ParseException ee) {
                this.dcModified = new Date();
            }
        }*/
    }
    /**
     * Generates the XML representation of the receiver
     */
    public void writeXML(Writer out) throws IOException {
        out.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n");
        out.append("<rdf:RDF\n");
        out.append("\t\txmlns:dcterms=\"http://purl.org/dc/terms/\"\n");
        out.append("\t\txmlns::rqm_auto=\"http://jazz.net/ns/auto/rqm#\"\n");
        out.append("\t\txmlns:oslc_qm=\"http://open-services.net/ns/qm#\"\n");
        out.append("\t\txmlns:rqm_qm=\"http://jazz.net/ns/qm/rqm#\"\n");
        out.append("\t\txmlns:calm=\"http://jazz.net/xmlns/prod/jazz/calm/1.0/\"\n");
        out.append("\t\txmlns:oslc=\"http://open-services.net/ns/core#\"\n");
        out.append("\t\txmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"\n");
        out.append("\t\txmlns:acp=\"http://jazz.net/ns/acp#\"\n");
        out.append("\t\txmlns:rdfs=\"http://www.w3.org/2000/01/rdf-schema#\"\n");
        out.append("\t\txmlns:foaf=\"http://xmlns.com/foaf/0.1/\"\n");
        out.append("\t\txmlns:oslc_auto=\"http://open-services.net/ns/auto#\"\n");
        out.append("\t\txmlns:bp=\"http://open-services.net/ns/basicProfile#\">\n");
        out.append("\t<oslc_qm:testPlan\n");
        if (uri != null) {
            //out.append("\n\t\trdf:resource=\""+uri+"\">\n");
            out.append("\n\t\trdf:about=\""+uri+"\">\n");
        } else {
            out.append(">\n");
        }
        appendXMLAttribute(out, CM_TITLE, dcTitle);
        appendXMLAttribute(out, CM_IDENTIFIER, dcIdentifier);
        appendXMLAttribute(out, CM_TYPE, dcType);
        appendXMLAttribute(out, CM_DESCRIPTION, dcDescription);
        appendXMLAttribute(out, CM_SUBJECT, dcSubject);
        appendXMLAttribute(out, CM_CREATOR, dcCreator);
        //appendXMLAttribute(out, CM_MODIFIED, RFC3339Format.format(dcModified));
        out.append("\t</oslc_qm:testPlan>\n");
        out.append("</rdf:RDF>\n");
        out.flush();
    }
    private void appendXMLAttribute(Writer out, String id, String value) throws IOException {
        out.append("\t<"+id+">"+value+"</"+id+">\n");
    }
    /**
     * Generates the JSON representation of the receiver
     */
    public void writeJSON(Writer out) throws IOException {
        out.append("{\n");
        if (uri != null)
        appendJSONAttribute(out, CM_ABOUT, uri);
        appendJSONAttribute(out, CM_TITLE, dcTitle);
        appendJSONAttribute(out, CM_IDENTIFIER, dcIdentifier);
        appendJSONAttribute(out, CM_TYPE, dcType);
        appendJSONAttribute(out, CM_DESCRIPTION, dcDescription);
        appendJSONAttribute(out, CM_SUBJECT, dcSubject);
        appendJSONAttribute(out, CM_CREATOR, dcCreator);
        //appendJSONAttribute(out, CM_MODIFIED, RFC3339Format.format(dcModified));
        out.append("}");
        out.flush();
    }
    private void appendJSONAttribute(Writer out, String key, String value) throws IOException {
        out.append("\t\""+key+"\": \""+value+"\",\n");
        
    }
    String getChildContent(Element element, String tagName) {
        NodeList list = element.getElementsByTagName(tagName);
        if (list.getLength() == 0) return null;
        Element child = (Element) list.item(0);
        return child.getTextContent();
    }
    public String getDcCreator() {
        return dcCreator;
    }
    public String getDcDescription() {
        return dcDescription;
    }
    public String getDcIdentifier() {
        return dcIdentifier;
    }
    public Date getDcModified() {
        return dcModified;
    }
    public String getDcSubject() {
        return dcSubject;
    }
    public String getDcTitle() {
        return dcTitle;
    }
    public String getDcType() {
        return dcType;
    }
    public String getUri() {
        return uri;
    }
    public void setDcCreator(String dcCreator) {
        this.dcCreator = dcCreator;
    }
    public void setDcDescription(String dcDescription) {
        this.dcDescription = dcDescription;
    }
    public void setDcSubject(String dcSubject) {
        this.dcSubject = dcSubject;
    }
    public void setDcTitle(String dcTitle) {
        this.dcTitle = dcTitle;
    }
    public void setDcType(String dcType) {
        this.dcType = dcType;
    }
    public void setUri(String uri) {
        this.uri = uri;
    }
}