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POJAXB unmarshalling not working
 

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  1. POJAXB unmarshalling not working
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    <p>I´ve set up a project to test marshalling for another project. Marshalling is working. I get the correct xml file, but unmarshalling is NOT working. I only get the Relation name (String). The attributes and functional dependencies are missing.</p> <p>EDIT: Here is the source: <a href="http://dl.dropbox.com/u/18039229/JaxbMarshallingSrc.zip" rel="nofollow">Sourcecode</a></p> <p>Please take a look at the classes:</p> <p>Main:</p> <pre><code>public class Main { public static void main(String[] args){ Relation db = new Relation(); Attribute a1 = new Attribute("Attribute 1", true, false); Attribute a2 = new Attribute("Attribute 2", false, false); Attribute a3 = new Attribute("Attribute 3", false, true); db.addAttribute(a1); db.addAttribute(a2); db.addAttribute(a3); ArrayList&lt;String&gt; src = new ArrayList&lt;String&gt;(); src.add("Attribute 1"); ArrayList&lt;String&gt; dest = new ArrayList&lt;&gt;(); dest.add("Attribute 2,Attribute 3"); FDs f1 = new FDs(src, dest); db.addFd(f1); exportToXml saver = new exportToXml(); try { saver.SaveDbNow(db); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } //Export again to test output Relation db2 = new Relation(); importFromXml reader = new importFromXml(); try { reader.ReadDbNow(db2); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } try { saver.SaveDbNow2(db2); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } } </code></pre> <p>Relation:</p> <pre><code>@XmlRootElement(name = "Relation") public class Relation { @XmlElement(name = "RelName") String name; @XmlElement(name = "Attribute") private ArrayList&lt;Attribute&gt; attrList; @XmlElement(name = "FD") private ArrayList&lt;FDs&gt; fdsList; public Relation() { this.attrList = new ArrayList&lt;&gt;(); this.fdsList = new ArrayList&lt;&gt;(); this.name = "Testname"; } public Relation(String name, ArrayList&lt;Attribute&gt; attrList, ArrayList&lt;FDs&gt; fdsList) { super(); this.attrList = attrList; this.fdsList = fdsList; } @XmlTransient public ArrayList&lt;Attribute&gt; getAttrList() { return attrList; } public void setAttrList(ArrayList&lt;Attribute&gt; attrList) { this.attrList = attrList; } @XmlTransient public ArrayList&lt;FDs&gt; getFdsList() { return fdsList; } public void setFdsList(ArrayList&lt;FDs&gt; fdsList) { this.fdsList = fdsList; } public void addAttribute(Attribute a) { this.attrList.add(a); } public void addFd(FDs fd) { this.fdsList.add(fd); } } </code></pre> <p>Attribute:</p> <pre><code>public class Attribute { @XmlElement( name = "Attributename") private String name; @XmlElement( name = "isPK") private boolean isPK; @XmlElement( name = "isFK") private boolean isFK; public Attribute(){ } public Attribute(String name, boolean isPK, boolean isFK) { super(); this.name = name; this.isPK = isPK; this.isFK = isFK; } @XmlTransient public String getName() { return name; } public void setName(String name) { this.name = name; } @XmlTransient public boolean isPK() { return isPK; } public void setPK(boolean isPK) { this.isPK = isPK; } @XmlTransient public boolean isFK() { return isFK; } public void setFK(boolean isFK) { this.isFK = isFK; } } </code></pre> <p>FD:</p> <pre><code>public class FDs { @XmlElement( name = "Source") private ArrayList&lt;String&gt; src; @XmlElement( name = "Destination") private ArrayList&lt;String&gt; dest; public FDs(){ } public FDs(ArrayList&lt;String&gt; src, ArrayList&lt;String&gt; dest) { super(); this.src = src; this.dest = dest; } @XmlTransient public ArrayList&lt;String&gt; getSrc() { return src; } public void setSrc(ArrayList&lt;String&gt; src) { this.src = src; } @XmlTransient public ArrayList&lt;String&gt; getDest() { return dest; } public void setDest(ArrayList&lt;String&gt; dest) { this.dest = dest; } } </code></pre> <p>Export:</p> <pre><code>public class exportToXml { public void SaveDbNow(Object saveMe) throws Exception { JAXB.marshal(saveMe, new File("test.xml")); } public void SaveDbNow2(Object saveMe) throws Exception { JAXB.marshal(saveMe, new File("test2.xml")); } } </code></pre> <p>Import:</p> <pre><code>public class importFromXml { public void ReadDbNow(Object readMe) throws Exception { readMe = JAXB.unmarshal(new FileInputStream("test.xml"), Relation.class); } } </code></pre> <p>Thanks in advance!</p> <p>EDIT: Output1:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8" standalone="yes"?&gt; &lt;Relation&gt; &lt;RelName&gt;Testname&lt;/RelName&gt; &lt;Attribute&gt; &lt;Attributename&gt;Attribute 1&lt;/Attributename&gt; &lt;isPK&gt;true&lt;/isPK&gt; &lt;isFK&gt;false&lt;/isFK&gt; &lt;/Attribute&gt; &lt;Attribute&gt; &lt;Attributename&gt;Attribute 2&lt;/Attributename&gt; &lt;isPK&gt;false&lt;/isPK&gt; &lt;isFK&gt;false&lt;/isFK&gt; &lt;/Attribute&gt; &lt;Attribute&gt; &lt;Attributename&gt;Attribute 3&lt;/Attributename&gt; &lt;isPK&gt;false&lt;/isPK&gt; &lt;isFK&gt;true&lt;/isFK&gt; &lt;/Attribute&gt; &lt;FD&gt; &lt;Source&gt;Attribute 1&lt;/Source&gt; &lt;Destination&gt;Attribute 2,Attribute 3&lt;/Destination&gt; &lt;/FD&gt; </code></pre> <p></p> <p>Output2:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8" standalone="yes"?&gt; &lt;Relation&gt; &lt;RelName&gt;Testname&lt;/RelName&gt; &lt;/Relation&gt; </code></pre>
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    1. USAndreas Freitag
    1. USAndreas Freitag
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    1. COYou're mixing getters and fields. Decide on one accessor type using e.g., `@XmlAccessorType(XmlAccessType.FIELD)` annotation on classes.
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      1. POJAXB unmarshalling not working
      1. USGrzegorz Grzybek
    2. COThe following article will help with the suggestion given by @GrzegorzGrzybek: http://blog.bdoughan.com/2011/06/using-jaxbs-xmlaccessortype-to.html
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      1. POJAXB unmarshalling not working
      1. USBlaise Doughan
    3. COThanks @GrzegorzGrzybek and @BlaiseDoughan! I will take a look at it
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      1. USAndreas Freitag
 

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