I using Orika mapper to map two beans. i would like to exclude billingSummary.billableItems property while mapping. I am trying below option but it is not working.
Any help?
public class Cart {
private String id;
private String name;
private BillingSummary billingSummary;
private String address;
//with getter and setter methods
}
public class BillingSummary {
private String billingItem;
private String billingItemId;
private BillableItems billableItems;
...
// with getter setter methods
}
//FilteredCart is same as Cart.
public class FilteredCart {
private String id;
private String name;
private BillingSummary billingSummary;
private String address;
//with getter and setter methods
}
#Component
public class CartMapper extends ConfigurableMapper {
#Override
public void configure(MapperFactory mapperFactory) {
mapperFactory.classMap(Cart.class,FilteredCart.class).exclude("billingSummary.billableItems").byDefault().register();
}
}
What you can do is adding another mapping to the mapperFactory in order to define how you want to map the BillingSummary to itself. In this way, when mapping from Cart to FilteredCart, you can configure to exclude to map the billableItems.
Therefore, your CartMapper will look like this:
#Component
public class CartMapper extends ConfigurableMapper {
#Override
public void configure(MapperFactory mapperFactory) {
mapperFactory.classMap(BillingSummary.class, BillingSummary.class).exclude("billableItems").byDefault().register();
mapperFactory.classMap(Cart.class,FilteredCart.class).byDefault().register();
}
}
How to pick up data from one field based on the condition of another field?
As shown below, I want to populate the class 'simulation' with the data from the class 'salary', the condition is like:
simulation.id = salary.id;
Some id has simulatedSalary, some id has notsimulatedSalary, some id has both of simulated and notsimulated Salary;
if(salary.simulated == true) then simulation.simulatedSalary = salary.salary, else simulation.simulatedSalary == 0;
if(salary.simulated == false) then simulation.notsimulatedSalary = salary.salary, else simulation.notsimulatedSalary == 0;
simulation.totalSalary = sum(simulation.simulatedSalary + simulation.notsimulatedSalary).
How to implement the above condition?
to populate List<simulation> simulationList from List<salary> salaryList:
public class salary {
private Integer id;
private Boolean simulated;
private Double salary;
}
public class simulation {
private Integer id;
private Double simulatedSalary;
private Double notsimulatedSalary;
private Double totalSalary;
}
if you want to implement the above code you should use inheritance also you should use protected data fields and not private for both of your class
sample usage of inheritances: in this code, your parent class is Salary and your child class is Simulation then you must set your data fields to be protected instead of private so that the child class can use its parent class variable directly
in inheritance child class can use all the methods and fields that are public or protected by the parent class
public class Salary
{
protected Integer id;
protected Boolean simulated;
protected Double salary;
}
public class Simulation extends Salary
{
//you do not need Integer id here
private Double simulatedSalary;
private Double notsimulatedSalary;
private Double totalSalary;
}
I have a Base Class.
#Data
class BaseDocument{
String id;
String name;
//Other fields
}
Say I have many classes that extends BaseDocument one below.
class NoteDocument extends BaseDocument{
String description;
Long lastModifiedDate;
//etc
}
It does not make sense to me to send entire document to UI in some cases. Most of the cases I need only id and name.
So for every document I have a VO class.
#Data
class BaseVO {
private String id;
private String name;
}
#Data
class NoteVO extends BaseVO{
//Nothing here now
}
And in NoteDocument I have.
public NoteVO getVo(){
Assert.notNull(getId());
NoteVO noteVo = new NoteVO();
noteVo.setName(getName());
noteVo.setId(getId());
return noteVo;
}
Now I have to copy this method in all the classes that extends BaseDocument.
Instead, I changed my BaseDocument like below.
#Data
class BaseDocument<V extends BaseVO>{
String id;
String name;
public V getVo(Class className) {
Assert.notNull(getId());
V vo = null;
try {
vo = (V) className.newInstance();
vo.setName(getName());
vo.setId(getId());
} catch (IllegalAccessException|InstantiationException e){
e.printStackTrace();
}
Assert.notNull(vo);
return vo;
}
}
I am new to generics. My first question, is this a good practice. Are there any problems in using reflection to create instance, any performance issues? Is there any better way to do achieve (write less code) this.
Edit: Suppose I need to display note in UI, Along with note I need to display name of the User who created note. I am using mongodb, when I save the note I also save UserVO in note, which will have user id and name of the user. If I save only user id while saving the note, I will have to do one more query to get the name of user while displaying. I want to avoid this.
Do not use reflection; use inheritance and maybe covariant return types instead. It will be faster, clearer, more precise, and easier to maintain. You may also find it useful to add methods to populate your VOs incrementally. I didn't come up with a clean way to apply generics to this situation, but I don't think you need them:
class BaseVO {
String id;
String name;
void setId(String id) {
this.id = id;
}
void setName(String name) {
this.name = name;
}
}
class NoteVO extends BaseVO {
// ...
}
#Data
class BaseDocument {
String id;
String name;
//Other fields
protected void populateBaseVO(BaseVO vo) {
vo.setId(id);
vo.setName(name);
}
public BaseVO getVO() {
BaseVO vo = new BaseVO();
populateBaseVO(vo);
return vo;
}
}
#Data
class NoteDocument extends BaseDocument {
String description;
Long lastModifiedDate;
// ....
protected void populateNoteVO(NoteVO vo) {
populateBaseVO(vo);
// ...
}
public NoteVO getVO() {
NoteVO vo = new NoteVO();
populateNoteVO(vo);
return vo;
}
}
I am trying to delete all Type's from my Neo4j database. I have a repository for the Type class, typeRepository, which I call typeRepository.deleteAll();. However, not everything is deleted. Only its node is deleted leaving the BusinessLogic node alive in the database. I am not sure what else to try at this point, since it name of the method implies that it will delete all things including itself and things related to itself. Here is how my persisted class looks, which extends a base type of object that my database contains:
#NodeEntity
public class BaseType {
#GraphId
private Long id;
#Indexed(unique=true) String uid;
private String name;
BaseType() {}
BaseType(String name) {
this.name = name;
}
}
,
public class Type extends BaseType {
#RelatedTo(type="businessLogic")
#Fetch
private BusinessLogic businessLogic;
public Type() {super();}
public Type(String name, BusinessLogic businessLogic) {
super(name);
this.businessLogic = businessLogic;
}
}
,
#NodeEntity
#XmlAccessorType(XmlAccessType.NONE)
public class BusinessLogic implements Serializable {
#GraphId
private Long id;
private static final long serialVersionUID = -634875134095817304L;
#XmlElement
private String create;
public void setCreate(String create) {
this.create = create;
}
public String getCreate() {
return create;
}
}
I only store the Type instances, and I do that by calling
typeRepository.save(new Type(name, businessLogic));.
I don't think SDN is doing cascading delete on its own. So, why don't you first delete the BusinessLogic objects via their respective repository, and then the Type objects?
I have the following classes:
public class Student {
private Long id ;
private String firstName;
private String lastName;
private Set<Enrollment> enroll = new HashSet<Enrollment>();
//Setters and getters
}
public class Enrollment {
private Student student;
private Course course;
Long enrollId;
//Setters and Getters
}
I have Struts2 controller and I would like to to return Serialized instance of Class Student only.
#ParentPackage("json-default")
public class JsonAction extends ActionSupport{
private Student student;
#Autowired
DbService dbService;
public String populate(){
return "populate";
}
#Action(value="/getJson", results = {
#Result(name="success", type="json")})
public String test(){
student = dbService.getSudent(new Long(1));
return "success";
}
#JSON(name="student")
public Student getStudent() {
return student;
}
public void setStudent(Student student) {
this.student = student;
}
}
It returns me the serializable student object with all sub classes, but I would like to have only student object without the hashset returned .
How can I tell Struts to serialize only the object?
I do have Lazy loading enabled and hashset is returned as proxy class.
See the answer here which shows the use of include and exclude properties. I don't think the example clearly shows excluding nested objects however I have used it for this purpose. If you still have issues I'll post a regex which will demonstrate this.
Problem with Json plugin in Struts 2
Edit:
Here is an example of using exclude properties in an annotation which blocks the serialization of a nested member:
#ParentPackage("json-default")
#Result(type = "json", params = {
"excludeProperties",
"^inventoryHistory\\[\\d+\\]\\.intrnmst, selectedTransactionNames, transactionNames"
})
public class InventoryHistoryAction extends ActionSupport {
...
inventoryHistory is of type InventoryHistory a JPA entity object, intrnmst references another table but because of lazy loading if it were serialized it would cause an Exception when the action is JSON serialized for this reason the exclude parameter has been added to prevent this.
Note that
\\
is required for each \ character, so a single \ would only be used in the xml where two are required because of escaping for the string to be parsed right.
#Controller
#Results({
#Result(name="json",type="json"
, params={"root","outDataMap","excludeNullProperties","true"
,"excludeProperties","^ret\\[\\d+\\]\\.city\\.province,^ret\\[\\d+\\]\\.enterprise\\.userinfos","enableGZIP","true"
})
})
public class UserinfoAction extends BaseAction {
#Action(value="login")
public String login(){
if(jsonQueryParam!=null && jsonQueryParam.length()>0)
{
user = JsonMapper.fromJson(jsonQueryParam, TUserinfo.class);
}
Assert.notNull(user);
//RESULT="ret" addOutJsonData: put List<TUserinfo> into outDataMap with key RESULT for struts2 JSONResult
addOutJsonData(RESULT, service.login(user));
return JSON;
}
public class TUserinfo implements java.io.Serializable {
private static final long serialVersionUID = 1L;
private String userid;
private String username;
private String userpwd;
private TEnterpriseinfo enterprise;
private String telphone;
private TCity city;
......
}
public class TEnterpriseinfo implements java.io.Serializable {
private String enterpriseid;
private String enterprisename;
private Set<TUserinfo> userinfos = new HashSet<TUserinfo>(0);
.......}
before set the excludeProperties property,the result is below:
{"ret":[
{
"city":{"cityename":"tianjin","cityid":"12","cityname":"天津"
,"province": {"provinceename":"tianjing","provinceid":"02","provincename":"天津"}
}
,"createddate":"2014-01-07T11:13:58"
,"enterprise":{"createddate":"2014-01-07T08:38:00","enterpriseid":"402880a5436a227501436a2277140000","enterprisename":"测试企业2","enterprisestate":0
,"userinfos":[null,{"city":{"cityename":"beijing","cityid":"11","cityname":"北京","province":{"provinceename":"beijing","provinceid":"01","provincename":"北京市"}
},"comments":"ceshi","createddate":"2004-05-07T21:23:44","enterprise":null,"lastlogindate":"2014-01-08T08:50:34","logincount":11,"telphone":"2","userid":"402880a5436a215101436a2156e10000","username":"0.5833032879881197","userpwd":"12","userstate":1,"usertype":0}]
}
,"lastlogindate":"2014-01-08T10:32:43","logincount":0,"telphone":"2","userid":"402880a5436ab13701436ab1b74a0000","username":"testUser","userpwd":"333","userstate":1,"usertype":0}]
}
after set the excludeProperties property,there are not exist province and userinfos nodes, the result is below:
{"ret":
[{
"city":{"cityename":"tianjin","cityid":"12","cityname":"天津"}
,"createddate":"2014-01-07T11:13:58"
,"enterprise":{"createddate":"2014-01-07T08:38:00","enterpriseid":"402880a5436a227501436a2277140000","enterprisename":"测试企业2","enterprisestate":0}
,"lastlogindate":"2014-01-08T11:05:32","logincount":0,"telphone":"2","userid":"402880a5436ab13701436ab1b74a0000","username":"testUser","userpwd":"333","userstate":1,"usertype":0
}]
}