hibernate-demo/src/main/java/com/ankurm/hibernatedemo/testdb/TestDbWidget.java

package com.ankurm.hibernatedemo.testdb;

import jakarta.persistence.Column;
import jakarta.persistence.Entity;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import jakarta.persistence.Id;
import jakarta.persistence.Lob;

/**
 * Backs docs/09-testing-in-memory-databases.md (post 4868 rewrite). One entity, run through the SAME mapping
 * against H2 2.4.240, HSQLDB 2.7.3 and Apache Derby 10.16.1.1 via {@link TestDbBootstrap} --
 * the DDL differences, dialect selection, and cross-database failure case are all read off
 * this exact class.
 *
 * <ul>
 *   <li>{@code id} -- {@code GenerationType.AUTO}, deliberately not IDENTITY or SEQUENCE, to
 *       see what each dialect resolves AUTO to.</li>
 *   <li>{@code sku} -- {@code varchar(5)}, short enough that an over-length value is a real
 *       constraint violation on at least one of the three databases.</li>
 *   <li>{@code order} -- a column named after a SQL reserved word on purpose (see
 *       {@code @Column(name = "\"order\"")}), the classic "works on some databases, breaks on
 *       others" trap.</li>
 *   <li>{@code active} -- a plain {@code boolean}, to see how each dialect maps and prints it.</li>
 *   <li>{@code description} -- {@code @Lob}, to see clob/text mapping differences.</li>
 * </ul>
 */
@Entity
public class TestDbWidget {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    @Column(length = 5)
    private String sku;

    @Column(name = "\"order\"")
    private Integer order;

    private boolean active;

    @Lob
    private String description;

    protected TestDbWidget() {
        // JPA
    }

    public TestDbWidget(String sku, Integer order, boolean active, String description) {
        this.sku = sku;
        this.order = order;
        this.active = active;
        this.description = description;
    }

    public Long getId() {
        return id;
    }

    public String getSku() {
        return sku;
    }

    public Integer getOrder() {
        return order;
    }

    public boolean isActive() {
        return active;
    }

    public String getDescription() {
        return description;
    }
}