package com.ankurm.hibernatedemo.immutable;

import jakarta.persistence.CascadeType;
import jakarta.persistence.Entity;
import jakarta.persistence.FetchType;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import jakarta.persistence.Id;
import jakarta.persistence.OneToMany;
import java.util.ArrayList;
import java.util.List;
import org.hibernate.annotations.Immutable;

/**
 * A MUTABLE parent entity (no {@code @Immutable} on the class) whose collection is marked
 * {@code @Immutable}. This isolates the collection-level annotation's own behaviour, per the
 * article's "Advanced Usage: Immutable Collections" section, from the entity-level one.
 */
@Entity
public class RateWithAuditTrail {

    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "rate_audit_seq")
    private Long id;

    private String pair;

    @Immutable
    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
    private List<AuditTrail> auditTrails = new ArrayList<>();

    protected RateWithAuditTrail() {
        // JPA
    }

    public RateWithAuditTrail(String pair) {
        this.pair = pair;
    }

    public Long getId() {
        return id;
    }

    public String getPair() {
        return pair;
    }

    public List<AuditTrail> getAuditTrails() {
        return auditTrails;
    }
}