[java] JPA: how do I persist a String into a database field, type MYSQL Text

The requirement is that the user can write an article, therefore I choose type Text for the content field inside mysql database. How can I convert Java String into MySQL Text

Here you go Jim Tough

@Entity
public class Article implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    private Long userId;

    private String title;

    private String content;

    private Integer vote;

    //Constructors, setters, getters, equals and hashcode
}

In my MYSQL database, content is type Text. I was hoping that there would be something like this java.sql.Text, since java.sql.Blob is an actual type, but sadly, that does not exist

This question is related to java mysql orm jpa

The answer is


for mysql 'text':

@Column(columnDefinition = "TEXT")
private String description;

for mysql 'longtext':

@Lob
private String description;

With @Lob I always end up with a LONGTEXTin MySQL.

To get TEXT I declare it that way (JPA 2.0):

@Column(columnDefinition = "TEXT")
private String text

Find this better, because I can directly choose which Text-Type the column will have in database.

For columnDefinition it is also good to read this.

EDIT: Please pay attention to Adam Siemions comment and check the database engine you are using, before applying columnDefinition = "TEXT".


Examples related to java

Under what circumstances can I call findViewById with an Options Menu / Action Bar item? How much should a function trust another function How to implement a simple scenario the OO way Two constructors How do I get some variable from another class in Java? this in equals method How to split a string in two and store it in a field How to do perspective fixing? String index out of range: 4 My eclipse won't open, i download the bundle pack it keeps saying error log

Examples related to mysql

Implement specialization in ER diagram How to post query parameters with Axios? PHP with MySQL 8.0+ error: The server requested authentication method unknown to the client Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver' phpMyAdmin - Error > Incorrect format parameter? Authentication plugin 'caching_sha2_password' is not supported How to resolve Unable to load authentication plugin 'caching_sha2_password' issue Connection Java-MySql : Public Key Retrieval is not allowed How to grant all privileges to root user in MySQL 8.0 MySQL 8.0 - Client does not support authentication protocol requested by server; consider upgrading MySQL client

Examples related to orm

How to select specific columns in laravel eloquent Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment] How to query between two dates using Laravel and Eloquent? Laravel - Eloquent "Has", "With", "WhereHas" - What do they mean? How to Make Laravel Eloquent "IN" Query? How to auto generate migrations with Sequelize CLI from Sequelize models? How to fix org.hibernate.LazyInitializationException - could not initialize proxy - no Session Select the first 10 rows - Laravel Eloquent How to make join queries using Sequelize on Node.js What is Persistence Context?

Examples related to jpa

No converter found capable of converting from type to type How does spring.jpa.hibernate.ddl-auto property exactly work in Spring? Deserialize Java 8 LocalDateTime with JacksonMapper Error creating bean with name 'entityManagerFactory' defined in class path resource : Invocation of init method failed How to beautifully update a JPA entity in Spring Data? JPA Hibernate Persistence exception [PersistenceUnit: default] Unable to build Hibernate SessionFactory How to return a custom object from a Spring Data JPA GROUP BY query How to find distinct rows with field in list using JPA and Spring? What is this spring.jpa.open-in-view=true property in Spring Boot? Spring Data JPA and Exists query