Kotlin Programming By Example

Creating models

Here, we are going to model the data we have identified into suitable entity classes that can be introspected by Spring Boot to build a suitable database schema. The first model we will concern ourselves with is the user model. Create a package named models under the com.example.messenger.api package. Create a User.kt file within the package and input the following code:

package com.example.messenger.api.modelsimport org.hibernate.validator.constraints.Lengthimport org.springframework.format.annotation.DateTimeFormatimport java.time.Instantimport java.util.*import javax.persistence.*import javax.validation.constraints.Patternimport javax.validation.constraints.Size@Entity@Table(name = "`user`")@EntityListeners(UserListener:: ...