StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
primarykey
Id
10879080
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
2
CommunityOwnedDate
CreationDate
2012-06-04T09:28:20.667
FavoriteCount
0
LastActivityDate
2012-06-04T09:40:34.620
LastEditDate
2012-06-04T09:40:34.620
LastEditorUserId
383861
OwnerUserId
383861
ParentId
10874711
PostTypeId
2
Score
2
ViewCount
0
LastEditorDisplayName
text
Body
From the log message you posted, I can see that you are using MOXy's external mapping document (see <a href="http://blog.bdoughan.com/2010/12/extending-jaxb-representing-annotations.html" rel="nofollow">http://blog.bdoughan.com/2010/12/extending-jaxb-representing-annotations.html</a>). There are a couple of different ways to map the inherited property. <hr/> OPTION #1 - Map the Inherited Property Belonging to the Parent By default a field/property needs to be mapped within the class it belongs to. Since MOXy scopes the external mapping document at the package level, you will need separate mapping documents for <code>A</code> and <code>B</code>. forum10874711/a/binding1.xml <pre><code><?xml version="1.0"?> <xml-bindings xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm" package-name="forum10874711.a"> <java-types> <java-type name="A"> <java-attributes> <xml-element java-attribute="fieldOfClassA" name="field-of-class-a"/> </java-attributes> </java-type> </java-types> </xml-bindings> </code></pre> forum10874711/b/binding1.xml <pre><code><?xml version="1.0"?> <xml-bindings xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm" package-name="forum10874711.b"> <java-types> <java-type name="B"> <xml-root-element/> <java-attributes> <xml-element java-attribute="fieldOfClassB" name="field-of-class-b"/> </java-attributes> </java-type> </java-types> </xml-bindings> </code></pre> forum10874711/b/jaxb.properties To specify MOXy as your JAXB implementation you need to add a file called <code>jaxb.properties</code> in the same package as your domain model with the following entry. <pre><code>javax.xml.bind.context.factory=org.eclipse.persistence.jaxb.JAXBContextFactory </code></pre> Demo <pre><code>package forum10874711; import java.util.*; import javax.xml.bind.*; import org.eclipse.persistence.jaxb.JAXBContextFactory; import forum10874711.b.B; public class Demo1 { public static void main(String[] args) throws Exception { Map<String, Object> properties = new HashMap<String, Object>(1); List<String> metadata = new ArrayList<String>(2); metadata.add("forum10874711/a/binding1.xml"); metadata.add("forum10874711/b/binding1.xml"); properties.put(JAXBContextFactory.ECLIPSELINK_OXM_XML_KEY, metadata); JAXBContext jc = JAXBContext.newInstance(new Class[] {B.class}, properties); B b = new B(); b.setFieldOfClassA("foo"); b.setFieldOfClassB(123); Marshaller marshaller = jc.createMarshaller(); marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); marshaller.marshal(b, System.out); } } </code></pre> Output <pre><code><?xml version="1.0" encoding="UTF-8"?> <field-of-class-a>foo</field-of-class-a> <field-of-class-b>123</field-of-class-b> </code></pre> <hr/> OPTION #2 - Map the Inherited Property Belonging to Child The parent class <code>A' can be marked</code>@XmlTransient<code>this will allow us to map the inherited fields/properties on the child class</code>B` (see <a href="http://blog.bdoughan.com/2011/06/ignoring-inheritance-with-xmltransient.html" rel="nofollow">http://blog.bdoughan.com/2011/06/ignoring-inheritance-with-xmltransient.html</a>). forum10874711/a/binding2.xml <pre><code><?xml version="1.0"?> <xml-bindings xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm" package-name="forum10874711.a"> <java-types> <java-type name="A" xml-transient="true"/> </java-types> </xml-bindings> </code></pre> forum10874711/b/binding2.xml <pre><code><?xml version="1.0" encoding="UTF-8"?> <xml-bindings xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/oxm" package-name="forum10874711.b"> <java-types> <java-type name="B"> <xml-root-element/> <java-attributes> <xml-element java-attribute="fieldOfClassA" name="field-of-class-a"/> <xml-element java-attribute="fieldOfClassB" name="field-of-class-b"/> </java-attributes> </java-type> </java-types> </xml-bindings> </code></pre> Demo <pre><code>package forum10874711; import java.util.*; import javax.xml.bind.*; import org.eclipse.persistence.jaxb.JAXBContextFactory; import forum10874711.b.B; public class Demo2 { public static void main(String[] args) throws Exception { Map<String, Object> properties = new HashMap<String, Object>(1); List<String> metadata = new ArrayList<String>(2); metadata.add("forum10874711/a/binding2.xml"); metadata.add("forum10874711/b/binding2.xml"); properties.put(JAXBContextFactory.ECLIPSELINK_OXM_XML_KEY, metadata); JAXBContext jc = JAXBContext.newInstance(new Class[] {B.class}, properties); B b = new B(); b.setFieldOfClassA("foo"); b.setFieldOfClassB(123); Marshaller marshaller = jc.createMarshaller(); marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); marshaller.marshal(b, System.out); } } </code></pre> Output <pre><code><?xml version="1.0" encoding="UTF-8"?> <field-of-class-a>foo</field-of-class-a> <field-of-class-b>123</field-of-class-b> </code></pre>
Tags
Title
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POJAXB inheritance in MOXY
 singulars
 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USBlaise Doughan
UserOwnerUserId
1. USBlaise Doughan
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. POJAXB inheritance in MOXY
 singulars
 PostTypePostTypeId
 PTQuestion
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTAcceptedByOriginator
2. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
3. VO
 singulars
 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId
1. COThank you so much! I have tested the **second option**, and it is working. Yes, I am using external binding files, and that is why I chosed moxy. I have to define more than one binding profile for the same object to produce different output, and I couldn't do it with the binding files of the sun's jaxb implementation.
 singulars
 PostPostId
 PO
 UserUserId
 USCome get some
2. COThis doesn't work if you for some reason has to override the getFieldOfClassA() in child class. See the issue here: http://stackoverflow.com/questions/11905298/inheritance-mapping-throwing-an-exception-with-moxy/11907523#11907523 and I can't use option 1 because it doesn't allow us to control the sequence of elements in the generated xml
 singulars
 PostPostId
 PO
 UserUserId
 USAravind R. Yarram

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.