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Posted to users@cxf.apache.org by "KARR, DAVID (ATTCINW)" <dk...@att.com> on 2009/09/11 17:40:24 UTC
How to make relatively simple change in XML mapping
I have a relatively simple prototype using the REST features of CXF, and
using JAXB out of the box to marshal a response to XML and JSON. This
is working fine.
I'm now trying to experiment with simple changes to the structure of the
marshaled XML, using "@Xml..." annotations. I assume that's what those
are for. I tried asking about this on the Metro JAXB web forum, but I
got no response. Is there another good forum for asking questions about
this?
Initially, my code looks like this:
@XmlRootElement(name = "Item")
public class Item {
private String id;
private String title;
private String description;
private List<String> features = new ArrayList<String>();
// ... getters/setters
public void addFeature(String feature) { getFeatures().add(feature); }
}
Another class:
@GET
@Path("/item/{id}")
@Produces({"application/xml", "application/json"})
public Item getItem(@PathParam("id") String id) {
Item item = new Item();
item.setId(id);
item.setTitle("abc");
item.setDescription("def");
item.addFeature("123");
item.addFeature("456");
return item;
}
When I send a request to ".../item/1", I get back:
<Item>
<description>def</description>
<features>123</features>
<features>456</features>
<id>1</id>
<title>abc</title>
</Item>
I'd really prefer to get:
<Item>
<description>def</description>
<features>
<feature>123</feature>
<feature>456</feature>
</features>
<id>1</id>
<title>abc</title>
</Item>
I've played around with several of the "@Xml" annotations on the
"features" field, but they just give me exceptions. For instance, I
just tried a simple case of adding '@XMLElement("feature")' just before
that field, and it gave me this exception:
WARNING: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1
counts of IllegalAnnotationExceptions
Class has two properties of the same name "features"
this problem is related to the following location:
at public java.util.List
com.att.ecom.catalog.Item.getFeatures()
at com.att.ecom.catalog.Item
this problem is related to the following location:
at private java.util.List
com.att.ecom.catalog.Item.features
at com.att.ecom.catalog.Item
RE: How to make relatively simple change in XML mapping
Posted by "KARR, DAVID (ATTCINW)" <dk...@att.com>.
> -----Original Message-----
> From: Daniel Kulp [mailto:dkulp@apache.org]
>
> I think you need to add an @XmlElementWrapper annotation to the
> features
> field. The XmlElement would name the element and the
> XmlElementWrapper would
> provide a wrapper element.
I was about to say that I'd already tried that, and it failed, but I
finally carefully read the exception, which made me realize that putting
the annotation on the field wasn't appropriate. After I put it on the
getter method, it at least got me a little closer. I think I'll try the
next question on the jaxb list.
Thanks.
Re: How to make relatively simple change in XML mapping
Posted by Daniel Kulp <dk...@apache.org>.
I think you need to add an @XmlElementWrapper annotation to the features
field. The XmlElement would name the element and the XmlElementWrapper would
provide a wrapper element.
Dan
On Fri September 11 2009 11:40:24 am KARR, DAVID (ATTCINW) wrote:
> I have a relatively simple prototype using the REST features of CXF, and
> using JAXB out of the box to marshal a response to XML and JSON. This
> is working fine.
>
> I'm now trying to experiment with simple changes to the structure of the
> marshaled XML, using "@Xml..." annotations. I assume that's what those
> are for. I tried asking about this on the Metro JAXB web forum, but I
> got no response. Is there another good forum for asking questions about
> this?
>
> Initially, my code looks like this:
>
> @XmlRootElement(name = "Item")
> public class Item {
> private String id;
> private String title;
> private String description;
> private List<String> features = new ArrayList<String>();
>
> // ... getters/setters
>
> public void addFeature(String feature) { getFeatures().add(feature); }
> }
>
> Another class:
>
> @GET
> @Path("/item/{id}")
> @Produces({"application/xml", "application/json"})
> public Item getItem(@PathParam("id") String id) {
> Item item = new Item();
> item.setId(id);
> item.setTitle("abc");
> item.setDescription("def");
> item.addFeature("123");
> item.addFeature("456");
> return item;
> }
>
> When I send a request to ".../item/1", I get back:
>
> <Item>
> <description>def</description>
> <features>123</features>
> <features>456</features>
> <id>1</id>
> <title>abc</title>
> </Item>
>
> I'd really prefer to get:
>
> <Item>
> <description>def</description>
> <features>
> <feature>123</feature>
> <feature>456</feature>
> </features>
> <id>1</id>
> <title>abc</title>
> </Item>
>
> I've played around with several of the "@Xml" annotations on the
> "features" field, but they just give me exceptions. For instance, I
> just tried a simple case of adding '@XMLElement("feature")' just before
> that field, and it gave me this exception:
>
> WARNING: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1
> counts of IllegalAnnotationExceptions
> Class has two properties of the same name "features"
> this problem is related to the following location:
> at public java.util.List
> com.att.ecom.catalog.Item.getFeatures()
> at com.att.ecom.catalog.Item
> this problem is related to the following location:
> at private java.util.List
> com.att.ecom.catalog.Item.features
> at com.att.ecom.catalog.Item
>
--
Daniel Kulp
dkulp@apache.org
http://www.dankulp.com/blog
Re: How to make relatively simple change in XML mapping
Posted by Sergey Beryozkin <se...@iona.com>.
You may want to post questions to
http://www.nabble.com/java.net---jaxb-users-f13500.html
You might also want to consider registering a custom XMLStreamWriter which
will be given a chance to changed the way XML is produced
cheers, Sergey
KARR, DAVID (ATTCINW) wrote:
>
> I have a relatively simple prototype using the REST features of CXF, and
> using JAXB out of the box to marshal a response to XML and JSON. This
> is working fine.
>
> I'm now trying to experiment with simple changes to the structure of the
> marshaled XML, using "@Xml..." annotations. I assume that's what those
> are for. I tried asking about this on the Metro JAXB web forum, but I
> got no response. Is there another good forum for asking questions about
> this?
>
> Initially, my code looks like this:
>
> @XmlRootElement(name = "Item")
> public class Item {
> private String id;
> private String title;
> private String description;
> private List<String> features = new ArrayList<String>();
>
> // ... getters/setters
>
> public void addFeature(String feature) { getFeatures().add(feature); }
> }
>
> Another class:
>
> @GET
> @Path("/item/{id}")
> @Produces({"application/xml", "application/json"})
> public Item getItem(@PathParam("id") String id) {
> Item item = new Item();
> item.setId(id);
> item.setTitle("abc");
> item.setDescription("def");
> item.addFeature("123");
> item.addFeature("456");
> return item;
> }
>
> When I send a request to ".../item/1", I get back:
>
> <Item>
> <description>def</description>
> <features>123</features>
> <features>456</features>
> <id>1</id>
> <title>abc</title>
> </Item>
>
> I'd really prefer to get:
>
> <Item>
> <description>def</description>
> <features>
> <feature>123</feature>
> <feature>456</feature>
> </features>
> <id>1</id>
> <title>abc</title>
> </Item>
>
> I've played around with several of the "@Xml" annotations on the
> "features" field, but they just give me exceptions. For instance, I
> just tried a simple case of adding '@XMLElement("feature")' just before
> that field, and it gave me this exception:
>
> WARNING: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 1
> counts of IllegalAnnotationExceptions
> Class has two properties of the same name "features"
> this problem is related to the following location:
> at public java.util.List
> com.att.ecom.catalog.Item.getFeatures()
> at com.att.ecom.catalog.Item
> this problem is related to the following location:
> at private java.util.List
> com.att.ecom.catalog.Item.features
> at com.att.ecom.catalog.Item
>
>
--
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