javers

问题 Are there any production best practices (tuning and similar) to follow to avoid: Performance issues Uncontrolled data growth Are also there any cleanup utilities or best practices in order to remove "old" or unnecessary data? Could the usage of MongoDB solve eventual of performance or data maintenance problems? 回答1: There is one performance hint -- keep Javers data small. You should control the number of Snapshots persisted to JaversRepository. Applications should track changes only in

问题 Are there any production best practices (tuning and similar) to follow to avoid: Performance issues Uncontrolled data growth Are also there any cleanup utilities or best practices in order to remove "old" or unnecessary data? Could the usage of MongoDB solve eventual of performance or data maintenance problems? 回答1: There is one performance hint -- keep Javers data small. You should control the number of Snapshots persisted to JaversRepository. Applications should track changes only in

问题 I am trying to integrate Javers with a Spring Data REST project. Currently I have the following entities in my domain. Student.class @Entity public class Person { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; private String firstName; private String lastName; private Long dob; @OneToOne private Gender gender; @OneToMany(cascade = CascadeType.ALL, mappedBy = "student", orphanRemoval = true) private List<ContactNumber> contactNumbers = new ArrayList<>(); }

问题 I am sure this is not a new question. Unfortunately, after fighting for this activity over 20 hours, I'm still cannot find out the solution. Could you please give me a helping hand. I will be very appreciate. Hey is my question. I would like to show Image from different urls to a girdView layout. However, my code didn't work so the screen show nothing. Could you guy please help me to solve this? Below is my MainActivity Class @Override protected void onCreate(Bundle savedInstanceState) {

问题 I am attempting to implement CustomComparators for certain classes. The first question I have is how to return back multiple ValueChanges in my CustomComparator. I seem to only be able to return back a single ValueChange on that object when more than one field might have changed. Additionally, I can't figure out how to get Javers to generate a diff for objects that appear as fields in the class my CustomCommparator is overriding. Example below: I have the following classes defined below where

问题 I have two java classes like so: public class FooA { private List<FooB> fooB; } public class FooB { private Integer id; private String name; private double num; } I want to compare the FooA and it tell me what fields inside the list object changed. But when I do this: FooA old = new FooA(Arrays.asList(new FooB(1, "old", 1.0))); FooA new = new FooA(Arrays.asList(new FooB(1, "new", 1.0))); Javers javers = JaversBuilder.javers() .withListCompareAlgorithm(LEVENSHTEIN_DISTANCE) .build(); javers

问题 Is there a way to default ignore all fields except explicitly included in Javers? I'm trying to persist CGLib proxy objects, and it's picking up all of the CGLib fields along with the @Entity fields. So what I think would work better is ignore by default, and an annotation/config to say "use these fields". I've also tried .withMappingStyle(MappingStyle.BEAN) which doesn't seem to make a difference. 回答1: There is no such option but you can ignore these CGLib proxy fields globally by type (if

问题 I'm using Javers Spring integration inside my application. I have a problem with Javers'es dependency named classgraph - it requires JDK9 while in my project I use Java 8 and unfortunately I'm not able to bump it to the 9 . Has anyone met this problem? Is there any approach how to avoid this? Javers dependency in javers-spring-5.1.3.pom : <groupId>org.javers</groupId> <artifactId>javers-core</artifactId> <version>5.1.3</version> <scope>compile</scope> Classgraph dependency in javers-core.5.1

问题 I am comparing two objects that have nested collections inside of them. The resulting diff has everything I would expect, except for how to reconstruct the hierarchy. As an illustrative example: I create a new garage, g1, with two cars, c1 and c2. c1 has 2 seats c1s1, c1s2. c2 has 1 seat, c2s1. My SimpleTextChangeLog looks something like this: new object: ...Garage/g1 new object: ...Seat/c2s1 new object: ...Car/c2 new object: ...Car/c1 new object: ...Seat/c1s1 new object: ...Seat/c1s2 I would

问题 When comparing two objects of the same size, Javers compares 1-to-1. However, if a new change is added such as new row to one of the objects, the comparison reports changes that are NOT changes. Is it possible to have Javers ignore the addition/deletion for the sake of just comparing like objects? Basically the indices get out of sync. Row Name Age Phone(Cell/Work) 1 Jo 20 123 2 Sam 25 133 3 Rick 30 152 4 Rick 30 145 New List Row Name Age Phone(Cell/Work) 1 Jo 20 123 2 Sam 25 133 3 Bill 30