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Javers #diffIgnore at class/property level not working with inheritance

We are building an application that needs to store differences made on existing opbjects.
Afterwards we will store these changes to the database. However for some reason the #diffIgnore option is not working on our User.class.
Every object extends our baseEntityCMS class, which has a property User. This is meant to store our update user information after the compare by JaVers is done. For some reason the user object is still compared even after setting #diffIgnore on property level and on class level.
Here is the code:
BaseEntityCMS.java
public class BaseEntityCMS extends BaseEntity {
private Boolean active;
private LocalDateTime inactiveDateTime;
private LocalDate creationDate;// in original application
private LocalDate importDate;
private LocalDate startDate;
private LocalDate endDate;
#Embedded
#DiffIgnore
private User modifierUser;
...
}
CodeList.java
public class CodeList extends BaseEntityCMS {
private String companyCode;
private Application sourceApplication;
private String name;
private String format;
private int length;
#OneToMany(cascade = CascadeType.ALL, mappedBy = "codeList")
private List<Description> descriptionList;
#ManyToMany(cascade = CascadeType.ALL, mappedBy = "codeListList")
private List<Keyword> keywords;
private String domainOwner;
#OneToMany(cascade = CascadeType.REFRESH)
private List<Attribute> attributeList;
...
}
User.java
#Embeddable
#AllArgsConstructor
#Builder
#DiffIgnore
public class User {
private String userName;
}
TestCodeList.java
#Test
public void compareCodeListTest() {
Javers javers = JaversBuilder.javers().withListCompareAlgorithm(ListCompareAlgorithm.LEVENSHTEIN_DISTANCE)
.registerValueObject(BaseEntity.class).registerValue(Code.class).registerValue(Attribute.class)
.registerValue(AttributeValue.class).registerValue(MapCodeAttribute.class)
.registerValueObject(User.class).build();
CodeList codeListNew = createCodeListTest("ServiceTest");
CodeList codeListNew2 = createCodeListTest("ServiceTest");
Diff diff = javers.compare(codeListNew2, codeListNew);
assertNull(diff.getChanges());
}
So in the test class we create 2 CodeLists (codeListNew and codeListNew2) with a standard method.
Inside this method everything is created the same except we create a new User every time.
Because all properties of codeList (attribute, attributeValue, ...) extend the BaseEntityCMS class they all have a User property.
This is the output we get:
changes on xxx.CodeList/ :
- 'attributeList' collection changes :
1. 'Attribute(name=Address, format=freeformat, length=10, numberOfDecimals=2, description=description attribute, optional=true)' changed to 'Attribute(name=Address, format=freeformat, length=10, numberOfDecimals=2, description=description attribute, optional=true)'
0. 'Attribute(name=Number of employees, format=freeformat, length=10, numberOfDecimals=2, description=description attribute, optional=true)' changed to 'Attribute(name=Number of employees, format=freeformat, length=10, numberOfDecimals=2, description=description attribute, optional=true)'
- 'mapCodeAttributeMap' map changes :
'Code(super=BaseEntityCMS(super=BaseEntity(id=null), active=true, inactiveDateTime=null, creationDate=2020-03-23, importDate=2020-03-23, startDate=2020-03-23, endDate=2025-12-31, modifierUser=codems.agza.datalayer.model.User#57f83dc7), code=code1)' -> 'MapCodeAttribute(super=BaseEntity(id=null))' added
'Code(super=BaseEntityCMS(super=BaseEntity(id=null), active=true, inactiveDateTime=null, creationDate=2020-03-23, importDate=2020-03-23, startDate=2020-03-23, endDate=2025-12-31, modifierUser=codems.agza.datalayer.model.User#75937998), code=code1)' -> 'MapCodeAttribute(super=BaseEntity(id=null))' removed
We actually expect no difference since everything is the same but the User. This user is marked with #DiffIngore? How come we still have differences?
Forgot: we use
<dependency>
<groupId>org.javers</groupId>
<artifactId>javers-core</artifactId>
<version>5.8.11</version>
</dependency>

How to set a foreign key via a controller in java j2ee?

I have two tables clients and contact :
public class Contacts implements Serializable{
#Id
#GeneratedValue
private Long idContacts;
private String nomContacts;
private String prenomContacts;
private String telephone;
private String autreTelephone;
private String fax;
private String email;
private int deleted = 0;
#ManyToOne(cascade = CascadeType.PERSIST)
#JoinColumn(name = "idClient")
private Client client;
}
and I declared an instance of Contact:
Contacts contact = new Contacts()
How can I set the foreign key of Contact manually I tried : contact.getClient().setIdClient(1) and it did not work.

A major purpose of JPA is to avoid manually fiddling with relationship keys; instead, just use regular Java references. For what you're trying to do:
Client clientOne = clients.find(1L); // or get the client some other way
contact.setClient(clientOne);
Note that Spring Data (in addition to autoimplemented repositories) provides a converter, so that if you have a method argument for your controller that refers to an existing object's ID, you can pass the object itself instead of looking up manually:
#GetMapping("/clients/{id}")
public Client getClient(#PathVariable("id") Client client) {
return client;
}

TopLink EntityManager doesn't save object properly

Really appreciate ANY help (at least ways how to trace root cause of the problem) because I've been fighting with this for several days and didn't find even workaround.
The problem itself: I have a few entities, all of them work good - persist(), find() etc. except one method where I create two different entities (Order and Items, one order can have many Items). After calling em.persist(..) order is saved and I see its id generated by DB, item is saved to DB (I see it through SELECT directly in DB) but it shows ID=0. And whatever I do it always 0 (e.g. when I open the order I still see its ID=0) until I restart server - then it shows correct ID of item.
Code of the method (after logging I added actual values I get):
public void createOrderFromItems(ArrayList<TehnomirItemDTO> items, User user) {
Order ord = new Order();
User managers = getUserByEmail(Constants.ALL_MANAGERS_GROUP);
ord.setAssignedTo(managers);
Date date = new Date();
ord.setCreatedOn(date);
User customer = user;
ord.setCustomer(customer);
BigDecimal custBalance = new BigDecimal(0);
ArrayList<Balance> balances = getBalanceForUser(customer);
for (Balance b:balances) {
custBalance.add(b.getAmount());
}
logger.debug("before1. order: "+ord.getOrderId()); //here I get 0
em.persist(ord);
logger.debug("before2. order: "+ord.getOrderId()); //still 0
State new_state = getStateByName(SharedConstants.STATE_NEW);
logger.debug("before3. order: "+ord.getOrderId()); //here I get actual ID, generated by DB, e.g. 189
State overpriced = getStateByName(SharedConstants.STATE_LIMIT_EXCEEDED);
ArrayList<Item> itemList = new ArrayList<Item>();
for (TehnomirItemDTO tid:items) {
Item item = new Item(tid);
item.setOrder(ord);
logger.debug("order inside2:"+ord.getOrderId()); //again, actual ID
item.setPriceInt(tid.getPrice_int());
custBalance = custBalance.subtract(item.getPriceInt());
if (custBalance.floatValue()>0) {
item.setStateBean(new_state);
} else item.setStateBean(overpriced);
logger.debug("item before:"+item.getItemId()); //here I get 0
em.persist(item);
item = em.merge(item);
em.setFlushMode(FlushModeType.COMMIT);//added just in case it would work but it didn't
em.flush();//same as previous line
Item tst = getItemByID(1);
logger.debug("item after:"+item.getItemId()+" ord:"+ord.getOrderId()); //again, orderID is correct, itemID is 0
itemList.add(item);
}
ord.setItems(itemList);
State new_state2 = getStateByName(SharedConstants.STATE_NEW);
logger.debug(ord.getItems().get(0).getItemId()+" order: "+ord.getOrderId());//again, orderID is correct, itemID is 0
}
Order class:
#Entity
#Table(name="orders")
public class Order implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY/*, generator="ORDERS_ORDERID_GENERATOR"*/)
#Column(name="ORDER_ID")
private int orderId;
#Temporal(TemporalType.TIMESTAMP)
#Column(name="CREATED_ON")
private Date createdOn;
//bi-directional many-to-one association to Item
#OneToMany(mappedBy="order")
private List<Item> items;
//uni-directional many-to-one association to User
#ManyToOne
#JoinColumn(name="ASSIGNED_TO")
private User assignedTo;
//uni-directional many-to-one association to User
#ManyToOne
#JoinColumn(name="CUSTOMER")
private User customer;
public Order() {
}
public int getOrderId() {
return this.orderId;
}
}
Item class (removed getters and setters to make it more readable):
#Entity
#Table(name="items")
public class Item implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#Column(name="ITEM_ID")
private int itemId;
private String code;
private BigDecimal weight;
public BigDecimal getWeight() {
return weight;
}
public void setWeight(BigDecimal weight) {
this.weight = weight;
}
private String comments;//any additional info user'd like to add
private String description;
#Column(name="EXT_ID")
private int extId;
private String manufacturer;
#Column(name="PRICE_EXT")
private BigDecimal priceExt;
#Column(name="PRICE_INT")
private BigDecimal priceInt;
private String region;
private String term;
//bi-directional many-to-one association to Order
#ManyToOne(cascade=CascadeType.PERSIST)
#JoinColumn(name="ORDER_ID")
private Order order;
//bi-directional many-to-one association to State
#ManyToOne
#JoinColumn(name="STATE")
private State state;
}
I had some thoughts about caching so I added to my persistence.xml lines
property name="toplink.cache.type.default" value="NONE"
property name="toplink.cache.type.Order" value="NONE"
but it didn't help either

Try to change int to Integer
private Integer orderId;
and getters and setters as well.

You mention Item is assigned an ID value by the database, but missed the #GeneratedValue(strategy=GenerationType.IDENTITY) annotation you have on order. This is what tells JPA the db controls the value, otherwise it expects the application to set it, keeping it the default 0.

after calling em.persist(obj), call em.flush();. It should work.
better have a private method save
like
private void save(object obj)
{
em.persist(obj);
em.flush();
}

Indexing composite object in spring mongodb

I have a composite object that I wish to store in mongodb (using spring annotations). The object is as follows:
#Document(collection="person")
class Person {
#Id
private String id;
private Address address;
private String name;
}
and the composite class Address:
#Document
class Address {
#Indexed
private Long countryId;
private String street;
#Indexed
private String city
}
I need both country and city to be indexed as part of the person collection. Alas, no index is created for them. Any ideas how to create the index?
I have tried the following which works but is not elegant:
#Document(collection="person")
#CompoundIndexes({
#CompoundIndex(name = "countryId", def = "{'address.countryId': 1}")
})
class Person {

You can set up multiple secondary indexes, if you wish. This would be a good place to start.

Relationships in Google App Engine

I have just one week experience in GAE/Java and trying to port an legacy application(developed using PHP/MySQL) to GAE+JDO. I'm now stuck with a basic issue in creating a relationship between two tables(kinds in GAE).
So here is the case:
We have a Users table which holds the user authentication information. It also has a field user_role which store role_id, which is actually a foreign key of another table user_roles.
From the the Entity-Relationship documentation in GAE, I understand that DataStore doesn't support foreign-key relationships and designed the Users class by adapting the Employee-ContactInfo example in the docs.
When I executed the application, the user_roles kind is inserted each time I add an entry in Users table. The user_roles kind is supposed to have only three static values. But this is having redundant values as I input more records in Users.
I think that I'm missing something very trivial, but I couldn't figure it out due to my inexperience to datastore. It would be very nice if someone could guide me to solve this issue.
Here is the code:
#PersistenceCapable(identityType = IdentityType.APPLICATION)
public class Users {
#PrimaryKey
#Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;
#Persistent
private String userName;
#Persistent
private String password;
#Persistent
private String salt;
#Persistent
private Date createdDate;
#Persistent
private Key createdBy;
#Persistent
private Date lastLogin;
#Persistent
private boolean status;
#Persistent
private String authKey;
#Persistent(defaultFetchGroup="true")
private SecurityRole securityRole;
#Autowired
SecurityRepository securityRepository ;
public SecurityPrincipals(String userName, String password,SecurityRole securityRole,boolean status) {
this.securityRole = securityRole;
this.userName = userName;
this.password = password;
this.status = status;
}
//getters and setters
}
Definition for Roles:
#PersistenceCapable(detachable="true")
public class SecurityRole {
#PrimaryKey
#Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;
#Persistent
private String securityRoleName;
#Persistent
private String securityRoleDescription;
#Persistent
private String securityRoleStatus;
#Persistent
private Date securityRoleCreatedDate;
public SecurityRole(String securityRoleName, String securityRoleDescription, String securityRoleStatus,String securityBaseType)
{
this.securityRoleName = securityRoleName;
this.securityRoleDescription = securityRoleDescription;
this.securityRoleStatus = securityRoleStatus;
this.securityBaseType = securityBaseType;
}
// getters and setters
}
The relevant code from Controller:
SecurityRole securityRole = securityRepository.getSecurityRole( securityRoleName);
users = new Users(userName,password,status,securityRole);
iUserRepository.save(employeeDetails);
Here is the definition of getSecurityRole:
public SecurityRole getSecurityRole(String securityRoleName)
{
PersistenceManagerFactory pmf = this.jdoTemplate.getPersistenceManagerFactory();
PersistenceManager pm = pmf.getPersistenceManager();
try {
Query query = pm.newQuery( SecurityRole.class);
query.declareImports("import java.lang.String");
query.declareParameters("String securityRoleName");
query.setFilter("this.securityRoleName == securityRoleName");
List<SecurityRole> securityRoles = (List<SecurityRole>)query.execute(new String(securityRoleName));
SecurityRole temp = null;
for(SecurityRole securityRole: securityRoles)
{
temp = securityRole;
}
return temp;
}
finally {
pm.close();
}
}
Here is the definition of iUserRepository.save():
public void save(Users user) {
jdoTemplate.makePersistent(companyDetails);
}

In the Users class, you have the defined the property
#Persistent(defaultFetchGroup="true")
private SecurityRole securityRole;
This statement creates an "owned" relationship in GAE datastore, which means that when you create an object of the Users class, an object of the SecurityRole class will be created as well.
What you need, is an unowned relationship that can be created as follows:
#Persistent(defaultFetchGroup="true")
private Key securityRole;
In this way, a SecurityRole object is not created each time you create an instance of the Users class. For more information about owned and unowned relationships, take a look at http://code.google.com/appengine/docs/java/datastore/jdo/relationships.html
Hope this helps!