Jackson: is there a way to serialize POJOs directly to treemodel?
To answer my own question: JsonNode node = objectMapper.valueToTree(map);
To answer my own question: JsonNode node = objectMapper.valueToTree(map);
The rule in TDD is “Test everything that could possibly break” Can a getter break? Generally not, so I don’t bother to test it. Besides, the code I do test will certainly call the getter so it will be tested. My personal rule is that I’ll write a test for any function that makes a … Read more
I think this should be the Plugin what you want https://github.com/wuseal/JsonToKotlinClass
You can do this: myList.get(3).setEmail(“new email”);
Use wrappers, make your life simple. Your data model should dictate this. You should be enforcing nullability in the database anyway. If they are nullable in the database, then use wrappers. If they are not nullable, and you use wrappers, then you’ll get an exception if you try and insert a null into the database. … Read more
edit: this solution only works for jackson < 2.0 For your case there is a simple solution: You need to annotate your model class with @JsonRootName(value = “user”); You need to configure your mapper with om.configure(Feature.UNWRAP_ROOT_VALUE, true); (as for 1.9) and om.configure(DeserializationFeature.UNWRAP_ROOT_VALUE, true); (for version 2). That’s it! @JsonRootName(value = “user”) public static class User … Read more
@SqlResultSetMapping annotation should not be put on a POJO. Put it at (any) @Entity class. “Unknown SqlResultSetMapping [foo]” tells you, that JPA provider doesn’t see any mapping under name ‘foo’. Please see another answer of mine for the correct example JPA- Joining two tables in non-entity class
Here is how it can look like: #MAP keyMapping: key1: value1 key2: value2 Generally YAML format has natural support of key-value pairs. Take a look on the following tutorial (just for example): https://github.com/Animosity/CraftIRC/wiki/Complete-idiot’s-introduction-to-yaml Or just google “yaml map” for more details.
Remember that Jackson, by default, determines the property name from either the getter or setter (the first that matches). To deserialize an object of type POJOUserDetails, Jackson will look for three properties public void setFirstName(String firstName) { public void setLastName(String lastName) { public void setActive(boolean isActive) { in the JSON. These are basically firstName, lastName, … Read more
Take a look at https://www.json.org Imagine that you have a simple Java class like this: public class Person { private String name; private Integer age; public String getName() { return this.name; } public void setName( String name ) { this.name = name; } public Integer getAge() { return this.age; } public void setAge( Integer age … Read more