Label.java

package com.mycompany.myapp.domain;

import com.fasterxml.jackson.annotation.JsonIgnore;
import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;

import javax.persistence.*;
import javax.validation.constraints.*;
import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;
import java.util.Objects;

/**
 * A Label.
 */
@Entity
@Table(name = "label")
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class Label implements Serializable {

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


    @NotNull
    @Size(min = 3)        
    @Column(name = "label", nullable = false)
    private String label;

    @ManyToMany(mappedBy = "labels")
    @JsonIgnore
    @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
    private Set<Operation> operations = new HashSet<>();

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getLabel() {
        return label;
    }

    public void setLabel(String label) {
        this.label = label;
    }

    public Set<Operation> getOperations() {
        return operations;
    }

    public void setOperations(Set<Operation> operations) {
        this.operations = operations;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        Label label = (Label) o;

        if ( ! Objects.equals(id, label.id)) return false;

        return true;
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(id);
    }

    @Override
    public String toString() {
        return "Label{" +
                "id=" + id +
                ", label='" + label + "'" +
                '}';
    }
}