How to map a map JSON column to Java Object with JPA

Question

We have a big table with a lot of columns. After we moved to MySQL Cluster, the table cannot be created because of:

ERROR 1118 (42000): Row size too l

Answer 1

There is a workaround for those don't want write too much code.

Frontend -> Encode your JSON Object to string base64 in POST method, decode it to json in GET method

In POST Method
data.components = btoa(JSON.stringify(data.components));

In GET
data.components = JSON.parse(atob(data.components))

Backend -> In your JPA code, change the column to String or BLOB, no need Convert.

@Column(name = "components", columnDefinition = "json")
private String components;