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Entity class defines non-transient non-serializable instance field price

Below little bit of code showing SONAR bug like :Class com.sample.Submit defines non-transient non-serializable instance field price. How can we get rid from this issue.
Code
#JsonIgnoreProperties(ignoreUnknown = true)
public class Submit implements Serializable {
/**
* serialVersionUID of type long.
*/
private static final long serialVersionUID = 0L;
#JsonProperty("billCode")
private String billCode;
#JsonProperty("displayName")
private String displayName;
#JsonProperty("visible")
private Boolean visible;
#JsonProperty("price")
private Price price;
public Boolean getVisible() {
return visible;
}
public void setVisible(Boolean visible) {
this.visible = visible;
}
public String getBillCode() {
return billCode;
}
public void setBillCode(String billCode) {
this.billCode = billCode;
}
public String getDisplayName() {
return displayName;
}
public void setDisplayName(String displayName) {
this.displayName = displayName;
}
public Price getPrice() {
return price;
}
public void setPrice(Price price) {
this.price = price;
}
}

Declare your class Price serializable as follows:
public class Price implements Serializable {
...
}

If you actually need the class to be serializable, then every one of its instance members, like Price, needs to be serializable as well.
Consider if you actually need this Submit class to be serializable though. If you are not doing anything that requires storing this or copying it across a network (like putting it in the HTTP session, or saving it on a file system, or putting it in a queue), you may not need the class to be serializable at all, in which the best course to take is to delete the implements Serializable from the Submit class.
(Be aware that making the class serializable has nothing to do with using it to generate JSON.)

How to find differences between two collections

I have following DTOs:
#Data
public class PersonDTO implements Diffable<PersonDTO> {
private String id;
private String firstName;
private String lastName;
private List<AddressDTO> addresses;
#Override
public DiffResult diff(PersonDTO personDTO) {
return new DiffBuilder(this, personDTO, SHORT_PREFIX_STYLE)
.append("id", this.id, personDTO.getId())
.append("firstName", this.firstName, personDTO.getFirstName())
.append("lastName", this.lastName, personDTO.getLastName())
.append("addresses", addresses, personDTO.getAddresses())
.build();
}
}
#Data
public class AddressDTO implements Diffable<AddressDTO> {
private String id;
private String personId;
private String addressType;
private String street;
private String houseNumber;
private String postalCode;
private String city;
private String countryId;
#Override
public DiffResult diff(AddressDTO addressDTO) {
return new DiffBuilder(this, addressDTO, SHORT_PREFIX_STYLE)
.append("id", this.id, addressDTO.getId())
.append("personId", this.personId, addressDTO.getPersonId())
.append("addressType", this.addressType, addressDTO.getAddressType())
.append("street", this.street, addressDTO.getStreet())
.append("houseNumber", this.houseNumber, addressDTO.getHouseNumber())
.append("postalCode", this.postalCode, addressDTO.getPostalCode())
.append("city", this.city, addressDTO.getCity())
.append("countryId", this.countryId, addressDTO.getCountryId())
.build();
}
}
My main goal is to find differences between two similar person objects. Currently I've tried to use Diffable interface from apache commons which is perfectly good for object. Please advise how to deal with collections when size of each collection can be different. For instance few addresses were removed, few was added and few was updated. Please see example below:
Probably there is another library which helps to achieve similar goals, please advice

source can be your first object
target can be your second object
Iterator targetIt = target.iterator();
for (Object obj:source)
if (!obj.equals(targetIt.next())
// Element has changed

Class has two properties of the same name. Why does this happen?

I implemented a Java web service (JAX-RS API Jersey implementation). There is an entity:
#XmlRootElement
public class TestPhoto extends Photo {
public enum Type {
BEFORE, AFTER, ADDON
}
private User author;
#XmlJavaTypeAdapter(LocalDateTimeAdapter.class)
private LocalDateTime createdTime;
private Type type;
public TestPhoto() {
super();
}
public TestPhoto(Long id, String key, String path, User author, LocalDateTime createdTime, Type type) {
super(id, key, path);
this.author = author;
this.createdTime = createdTime;
this.type = type;
}
public User getAuthor() {
return author;
}
public void setAuthor(User author) {
this.author = author;
}
public LocalDateTime getCreatedTime() {
return createdTime;
}
public void setCreatedTime(LocalDateTime createdTime) {
this.createdTime = createdTime;
}
public Type getType() {
return type;
}
public void setType(Type type) {
this.type = type;
}
}
When I am trying to retrieve a list of such entities, I get an error:
com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException: 8 counts of IllegalAnnotationExceptions
Class has two properties of the same name "createdTime"
this problem is related to the following location:
at public java.time.LocalDateTime com.test.TestPhoto.getCreatedTime()
at com.test.TestPhoto
at public java.util.List com.test.TestAccount.getAddonPhotos()
at com.test.TestAccount
this problem is related to the following location:
at private java.time.LocalDateTime com.test.TestPhoto.createdTime
at com.test.TestPhoto
at public java.util.List com.test.TestAccount.getAddonPhotos()
at com.test.TestAccount
I know how to fix this. For instance, I could rename private fields and add _ as a prefix. Or I could add a #XmlAccessorType(XmlAccessType.FIELD) annotation to a field.
I see also, that there is something wrong with #XmlJavaTypeAdapter(LocalDateTimeAdapter.class) annotation. If comment it out everything works fine. But that part of functionality won't work in this case.
What I am trying to understand is why this happened in the first place. The code worked perfectly fine and then just stopped and started throwing such exceptions. Should this code have worked in the first place? Or is it completely wrong?

JAX-RS/Jersey: java.lang.ClassCastException - cannot be cast to javax.xml.bind.JAXBElement

I have application separated to frontend and backend modules which communicate through restfull webservice. Unfortunately, something goes wrong in this code and I get from Backend part:
java.lang.ClassCastException: com.rrd.ecomdd.data.SharedFile cannot be cast to javax.xml.bind.JAXBElement
Frontend snippet:
#Override
public void share(Set<SharedFile> fileSet) {
apiTarget.path(ApiConstant.FILESERVICE)
.path(ApiConstant.FILESERVICE_SHARE)
.request(MediaType.APPLICATION_JSON_TYPE.withCharset("UTF-8"))
.post(Entity.entity(fileSet.toArray(new SharedFile[0]), MediaType.APPLICATION_JSON_TYPE.withCharset("UTF-8")), new GenericType<Set<SharedFile>>() {
});
}
Backend snippet
#POST
#Path(ApiConstant.FILESERVICE_SHARE)
#Produces("application/json; charset=UTF-8")
#Consumes("application/json; charset=UTF-8")
public List<SharedFile> share(SharedFile[] sharedList) {
for (SharedFile s : sharedList) {
fileService.share(s);
}
return Arrays.asList(sharedList);
}
SharedFile class:
public class SharedFile {
private Long id;
private User user;
private ManagedFile file;
private UUID uuid = UUID.randomUUID();
public SharedFile(User user, ManagedFile file) {
this.user = user;
this.file = file;
}
public SharedFile() {
}
//getters, setters, equals and hashcode below
}
Any ideas how to fix this?

Try to annotate the class and its attributes as mentioned here:
#XmlRootElement
public class SharedFile {
#XmlElement
private Long id;
#XmlElement
private User user;
#XmlElement
private ManagedFile file;
Follow this for more: http://docs.oracle.com/javaee/6/tutorial/doc/gkknj.html

How to refer to an inner class inside a list in Java

after messing around with parsing a JSON response with GSON for a day, I finally figured out how to get my javabeans right in order to extract my data from the response. This is the layout of my nested classes and lists:
public class LocationContainer {
public class paging {
private String previous;
private String next;
}
private List<Datas> data;
public class Datas {
private String message;
private String id;
private String created_time;
public class Tags {
private List<Data> datas;
public class Data {
private String id;
private String name;
}
}
public class Application {
private String id;
private String name;
}
public class From {
private String id;
private String name;
}
public class Place {
private String id;
private String name;
public class Location {
private int longitude;
private int latitude;
}
}
}
}
Now I am trying to get a hold of the name string inside the place class and the created_time string, but since I am quite a noob, I can't seem to figure it out.
I was able to extract the created_time string by using
String time = gson.toJson(item.data.get(1).created_time);
However using
String name = gson.toJson(item.data.get(1).Place.name);
doesnt work.
The item class is an instance of LocationContainer filled with the output from GSON.
Any pointers would be greatly appreciated.

created_time is a member variable of Data, so your first line is fine.
However, Place is not a member variable, it's just a class definition. You probably need to instantiate a member variable inside your Data class, e.g.:
private Place place;