JavaScript object notation (complete shape of JSON) is a popular file layout used to interchange statistics. The data gadgets are saved and transmitted using key-price pairs and array statistics sorts. In simpler phrases, JSON information is (in some ways) the language of databases.

JSON has syntactic similarity to JavaScript because JSON is based on JavaScript object notation syntaxes. But JSON format is text only, which makes it easy to read and use with any programming language.

JSON facts layout is ubiquitous in net APIs, cloud computing, NoSQL databases (like MongoDB), and increasingly also in Machine Learning.

This is how a typical JSON data looks like (more on this in upcoming sections) -

"bytes": ["Abstraction", "Inheritance", "Encapsulation", "Polymorphism”]

More generic scenarios where JSON data format is used are:

Data storage, configuration, and validation

Data transfer between APIs, client, and server

Restructuring input data from the user (JSON schema)

The easiest way to achieve this goal is to set the hibernate.types.json.serializer configuration property in the hibernate.properties file:

hibernate.types.JSON.serializer=com.vladmihalcea.hibernate.type.JSON.configuration.CustomJsonSerializerSupplier

This property takes the fully-qualified class name of an implementation of the CustomJsonSerializerSupplier interface:

What’s exceptional about customizing the hibernate-type project is that you may use both the hibernate-particular hibernate.Properties or you may offer a hibernate-kinds.Properties document in case you can't alter hibernate.Properties.

You can even supply a different Java properties file via the hibernate-types.properties.path System property,

The CustomJsonSerializerSupplier can look as follows:

public class CustomJsonSerializerSupplier

        return new CustomJsonSerializer();

Right here, for checking out sake, we're using a custom JSON serializer that implements the JSON serializer interface:

We are going to use the called static variable to test in our unit test if this technique is called using hibernate-sorts.

assertFalse(CustomJsonSerializer.isCalled());

        BigDecimal.valueOf(2.25262562526626D)

assertTrue(CustomJsonSerializer.isCalled());

    Event event = entityManager.find(Event.class, 1L);

        event.getLocation().getReference().toString()

As you can see, the CustomJsonSerializer is being used, so you can easily customize the way a given JSON object is serialized by hibernate-types.

Because of the configuration mechanism, I introduced for customizing the object mapper, it's miles very clean to add new configuration options, like this one which lets you exchange the manner a given JSON item is serialized via hibernate-sorts.

How to customize the JSON Serializer used by Hibernate-Types - Today we will start the discussion.

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