I have defined jibx codegen customization.
<schema-set xmlns:xs="http://www.w3.org/2001/XMLSchema" type-substitutions="xs:integer xs:int" choice-exposed="false">
<name-converter strip-suffixes="Type"/>
<class-decorator class="org.jibx.schema.codegen.extend.SerializableDecorator"/>
<!-- Common Data Objects -->
<class-decorator class="org.jibx.schema.codegen.extend.ExtensionDecorator"
base-class="com.company.domain.message.MyMessage"
match-name="MyRequest"/>
</schema-set>
This generates the class:
public class MyRequest
extends
com.company.domain.message.MyMessage
implements Serializable {
private String studentEmail;
private String studentId;
private String studentIPAddress;
// Getter/Setter
}
Here's MyMessage class:
public abstract class MyMessage {
private boolean redundantRequest;
public boolean isRedundantRequest() {
return redundantRequest;
}
public void setRedundantRequest(boolean redundantRequest) {
this.redundantRequest = redundantRequest;
}
I have set the data in MyRequest:
MyRequest myRequest = new MyRequest();
myRequest.setStudentEmail("email");
myRequest.setStudentId("id");
myRequest.setStudentIPAddress("ip.address");
myRequest.setRedundantRequest(Boolean.TRUE);
The issue is when the MyRequest object is getting marshalled I am losing the RedundantRequest value in MyMessage.
How do I get the RedundantRequest value in the xml after marshalling the MyMessage object.
Any suggestion is appreciated.
Related
I'm currently using Quarkus combined with Blaze Persistence for my microservice. I have the following entity model:
#Entity
public class Content extends BaseEntity {
private boolean deleted;
private boolean published;
}
#Entity
public class WebContent extends Content {
private String webpage;
}
I've mapped the entities to the following EntityViews:
#EntityView(Content.class)
#EntityViewInheritance
#CreatableEntityView
#UpdatableEntityView
public interface ContentUpdateView {
#IdMapping
Long getId();
boolean isPublished();
void setPublished(boolean published);
}
#EntityView(WebContent.class)
#CreatableEntityView
#UpdatableEntityView
public interface WebContentUpdateView extends ContentUpdateView {
String getWebpage();
void setWebpage(String webpage);
}
I have the following method in my ContentsResource:
#POST
public ContentUpdateView save(ContentUpdateView content) {
return contentsService.save(content);
}
When I invoke the post operation I only get the base ContentUpdateView and not the WebContentUpdateView. Is there any configuration to do? (with Jackson I use #JsonTypeInfo and #JsonSubType annotation on the entities to accomplish this).
Thanks
euks
I got it working using Jackson annotation. Here's the base class:
#EntityView(Content.class)
#EntityViewInheritance
#JsonTypeInfo(
use = JsonTypeInfo.Id.NAME,
property = "type")
#JsonSubTypes({
#JsonSubTypes.Type(value = DescriptiveContentView.class, name = "descriptive"),
#JsonSubTypes.Type(value = MediaContentView.class, name = "media"),
#JsonSubTypes.Type(value = WebContentView.class, name = "web")
})
#JsonTypeName("content")
public abstract class ContentView {
#IdMapping
public abstract Long getId();
public abstract boolean isPublished();
}
And here's a subclass:
#EntityView(DescriptiveContent.class)
#JsonTypeName("descriptive")
public abstract class DescriptiveContentView extends ContentView {
public abstract Set<LocalizedParagraphView> getLocalizedParagraphs();
}
I'm using abstract classes for other purposes, but it also works with interfaces.
The thing is that I want to hide the null elements from a RESTFul JSON response (if it's possible).
The REST controller retrieves the information from a Mongo database and because this elements doesn't exist there I would like to ignore them when they are null.
This is my REST Controller (exposed with Jersey):
#Stateless
#TransactionAttribute(TransactionAttributeType.NOT_SUPPORTED)
#Path(PropertiesRestURIConstants.PROPERTIES)
#Produces(MediaType.APPLICATION_JSON)
#RequestScoped
public class GetPropertiesController {
#EJB(mappedName = PropertiesManagerRemote.MAPPED_NAME)
PropertiesManagerRemote propertiesManager;
#GET
#Path(PropertiesRestURIConstants.PROPERTIES_ALL)
public List<PropertyEntity> getAllProperties() throws DBLayerException {
return propertiesManager.getAllProperties();
}
...
...
...
}
This is my entity:
#Document(collection = "property")
public class PropertyEntity implements GenericEntity {
#Id
private String id;
private String propertyName;
private String propertyValue;
public PropertyEntity() {
}
public PropertyEntity(String propertyName, String propertyValue) {
this.propertyName = propertyName;
this.propertyValue = propertyValue;
}
...
...
...
}
And this is the result:
[{"id":"542c00c2ff5e0ba4ea58790d","propertyName":"property1","propertyValue":null},{"id":"542c00c2ff5e0ba4ea58790e","propertyName":"property2","propertyValue":null},{"id":"542c00c2ff5e0ba4ea58790f","propertyName":"property3","propertyValue":null}]
I use Spring Data for the persistence layer. I tried with JSONIgnore annotations and similar things, but nothing works for me.
Any help will be welcome.
Thanks in advance.
Try to annotate it this way:
#JsonInclude(Include.NON_EMPTY)
public class PropertyEntity implements GenericEntity {
I'm facing problem with Jackson's ObjectMapper using JAXB annotations. To be concrete, I'm having collection with interface generic information and although I can deserialize input from XML, it is not possible with Jackson (using JAXB introspector). Maybe I'm just missing some configuration property or JAXB annotation? The problem is that "abstract types can only be instantiated with additional type information", I thought #XmlElementRef (or #XmlElement) with type information will handle this problem, but obviosly it does not.
Please note, that I want to stay only with JAXB annotations if possible.
E.g. using #JsonTypeInfo or #JsonDeserialize would be the last thing to do.
IEntry.java:
#XmlSeeAlso(Entry.class)
public interface IEntry {
String getValue();
}
Entry.java:
#XmlRootElement(name = "entry")
public class Entry implements IEntry {
#XmlElement(name = "value")
String value;
public Entry() {
}
public Entry(String value) {
this.value = value;
}
public String getValue() {
return value;
}
}
Aggregator.java:
#XmlRootElement(name = "aggregator")
public class Aggregator {
#XmlElementRef(type = Entry.class)
private Set<IEntry> entries;
public Aggregator() {
}
public Aggregator(Set<IEntry> entries) {
this.entries = entries;
}
public Set<IEntry> getEntries() {
return entries;
}
}
Test method:
#Test
public void testSerialization() throws Exception {
ObjectMapper om = new ObjectMapper();
AnnotationIntrospector intr = new JaxbAnnotationIntrospector();
om.getDeserializationConfig().withAnnotationIntrospector(intr);
String json = "{\"entries\":[{\"value\":\"X\"},{\"value\":\"Y\"},{\"value\":\"Z\"}]}\";\n}";
Aggregator agr = om.readValue(json, Aggregator.class);
}
Thanks for all response
Note: I'm the EclipseLink JAXB (MOXy) lead and a member of the JAXB (JSR-222) expert group.
I am not sure if Jackson supports this use case or not, but you appear to be using #XmlElementRef incorrectly. When you use #XmlElementRef the root element name associated with the class is used to determine the instance to be instantiated. If your example the node entries does not match the #XmlRootElement(name="entry") annotation.
You could try one of the following options (they all work with MOXy's JSON binding, see: http://blog.bdoughan.com/2011/08/json-binding-with-eclipselink-moxy.html):
OPTION 1 - Change #XMLRootElement on Entry
#XmlRootElement(name = "entries")
public class Entry implements IEntry {
#XmlElement(name = "value")
String value;
public Entry() {
}
public Entry(String value) {
this.value = value;
}
public String getValue() {
return value;
}
}
OPTION #2 - Change the JSON Document
{"entry":[{"value":"X"},{"value":"Y"},{"value":"Z"}]}}
OPTION #3 - Use #XMLElement instead of #XMLElementRef
If you use the #XmlElement annotation you can specify on the field/property what the node name should be instead of relying on the #XmlRootElement annotation. Also if you annotate the fields you should specify #XmlAccessorType(XmlAccessType.FIELD) at the type level.
import java.util.Set;
import javax.xml.bind.annotation.*;
#XmlRootElement(name = "aggregator")
#XmlAccessorType(XmlAccessType.FIELD)
public class Aggregator {
#XmlElement(type = Entry.class)
private Set<IEntry> entries;
public Aggregator() {
}
public Aggregator(Set<IEntry> entries) {
this.entries = entries;
}
public Set<IEntry> getEntries() {
return entries;
}
}
For More Information
http://blog.bdoughan.com/2010/11/jaxb-and-inheritance-using-substitution.html
http://blog.bdoughan.com/2011/05/jaxb-and-interface-fronted-models.html
import org.codehaus.jackson.map.annotate.JsonDeserialize;
#JsonDeserialize(as = Entry.class)
public interface IEntry {
String getValue();
}
Good day,
I am currently integration attempting to consume a REST service that produces JSON (written in .NET) using Jackson (with Jersey). The JSON consists of a possible error message and an array of objects. Below is a sample of the JSON returned as produced by Jersey's logging filter:
{
"error":null,
"object":"[{\"Id\":16,\"Class\":\"ReportType\",\"ClassID\":\"4\",\"ListItemParent_ID\":4,\"Item\":\"Pothole\",\"Description\":\"Pothole\",\"Sequence\":1,\"LastEditDate\":null,\"LastEditor\":null,\"ItemStatus\":\"Active\",\"ItemColor\":\"#00AF64\"}]"
}
I have two classes to represent the type (the outer ListResponse):
public class ListResponse {
public String error;
public ArrayList<ListItem> object;
public ListResponse() {
}
}
and (the inner ListItem):
public class ListItem {
#JsonProperty("Id")
public int id;
#JsonProperty("Class")
public String classType;
#JsonProperty("ClassID")
public String classId;
#JsonProperty("ListItemParent_ID")
public int parentId;
#JsonProperty("Item")
public String item;
#JsonProperty("Description")
public String description;
#JsonAnySetter
public void handleUnknown(String key, Object value) {}
public ListItem() {
}
}
The class that invokes and returns the JSON looks like this:
public class CitizenPlusService {
private Client client = null;
private WebResource service = null;
public CitizenPlusService() {
initializeService("http://localhost:59105/PlusService/");
}
private void initializeService(String baseURI) {
// Use the default client configuration.
ClientConfig clientConfig = new DefaultClientConfig();
clientConfig.getClasses().add(JacksonJsonProvider.class);
client = Client.create(clientConfig);
// Add a logging filter to track communication between server and client.
client.addFilter(new LoggingFilter());
// Add the base URI
service = client.resource(UriBuilder.fromUri(baseURI).build());
}
public ListResponse getListItems(String id) throws Exception
{
ListResponse response = service.path("GetListItems").path(id).accept(MediaType.APPLICATION_JSON_TYPE, MediaType.APPLICATION_XML_TYPE).get(ListResponse.class);
return response;
}
}
The important call here is the getListItems method. Running the code in a test harness, produces the following:
org.codehaus.jackson.map.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of VALUE_STRING token
at [Source: java.io.StringReader#49497eb8; line: 1, column: 14] (through reference chain: citizenplus.types.ListResponse["object"])
Please assist.
Regards,
Carl-Peter Meyer
You may be missing a #JsonDeserialize attribute as the type information does get lost in generics at run-time. Also you should avoid using concrete classes for collections if you can.
public class ListResponse {
public String error;
#JsonDeserialize(as=ArrayList.class, contentAs=ListItem.class)
public List<ListItem> object;
}
Your problem is that the 'object' property value is a String and not an array! The string contains a JSON array but Jackson expects a native array (without the wrapping quotes).
I had the same problem and I created a custom deserializer, which will deserialize a string value to a generic collection of the desired type:
public class JsonCollectionDeserializer extends StdDeserializer<Object> implements ContextualDeserializer {
private final BeanProperty property;
/**
* Default constructor needed by Jackson to be able to call 'createContextual'.
* Beware, that the object created here will cause a NPE when used for deserializing!
*/
public JsonCollectionDeserializer() {
super(Collection.class);
this.property = null;
}
/**
* Constructor for the actual object to be used for deserializing.
*
* #param property this is the property/field which is to be serialized
*/
private JsonCollectionDeserializer(BeanProperty property) {
super(property.getType());
this.property = property;
}
#Override
public JsonDeserializer<?> createContextual(DeserializationContext ctxt, BeanProperty property) throws JsonMappingException {
return new JsonCollectionDeserializer(property);
}
#Override
public Object deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
switch (jp.getCurrentToken()) {
case VALUE_STRING:
// value is a string but we want it to be something else: unescape the string and convert it
return JacksonUtil.MAPPER.readValue(StringUtil.unescapeXml(jp.getText()), property.getType());
default:
// continue as normal: find the correct deserializer for the type and call it
return ctxt.findContextualValueDeserializer(property.getType(), property).deserialize(jp, ctxt);
}
}
}
Note that this deserializer will also work if the value actually is an array and not a string, because it delegates the actual deserialization accordingly.
In your example you would now have to annotate your collection field like so:
public class ListResponse {
public String error;
#JsonDeserialize(using = JsonCollectionDeserializer.class)
public ArrayList<ListItem> object;
public ListResponse() {}
}
And that should be it.
Note: JacksonUtil and StringUtil are custom classes, but you can easily replace them. For example by using new ObjectMapper() and org.apache.commons.lang3.StringEscapeUtils.
The register subTypes works!
#JsonTypeInfo(use=JsonTypeInfo.Id.NAME, include=JsonTypeInfo.As.PROPERTY, property="type")
public interface Geometry {
}
public class Point implements Geometry{
private String type="Point";
....
}
public class Polygon implements Geometry{
private String type="Polygon";
....
}
public class LineString implements Geometry{
private String type="LineString";
....
}
GeoJson geojson= null;
ObjectMapper mapper = new ObjectMapper();
mapper.disable(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES);
mapper.registerSubtypes(Polygon.class,LineString.class,Point.class);
try {
geojson=mapper.readValue(source, GeoJson.class);
} catch (IOException e) {
e.printStackTrace();
}
It is storing an integer in the database not the string as I requested.
Here is the class that contains the enum.
#Entity
#Inheritance(strategy=InheritanceType.JOINED)
public abstract class Document extends BaseModel {
private String title = new String();
private String description = new String();
**#Enumerated(EnumType.STRING)
private DocumentType documentType;**
#Embedded
private DocumentImage documentImage;
// if document should be displayed or published on the web site.
private Boolean published = new Boolean(false);
public Document(DocumentType docType) {
super();
documentType = docType;
setDocumentImage(new DocumentImage());
}
}
and here is the enum class:
public enum DocumentType {
policy,procedure,webbookmark,newsrelease,collectionLetter,whitepaper,busform,
newsarticle ;
}
I know this should work. Any ideas?
One possible reason is that your #Enumerated annotation doesn't take effect because annotations in BaseModel are placed on properties rather than on fields. Placement of annotations on fields or properties should be consistent across inheritance hierarchy.