# Vet.java

    /*
     * Copyright 2012-2019 the original author or authors.
     *
     * Licensed under the Apache License, Version 2.0 (the "License");
     * you may not use this file except in compliance with the License.
     * You may obtain a copy of the License at
     *
     *      https://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */
    package org.springframework.samples.petclinic.vet;

    import java.util.ArrayList;
    import java.util.Collections;
    import java.util.HashSet;
    import java.util.List;
    import java.util.Set;

    import javax.persistence.Entity;
    import javax.persistence.FetchType;
    import javax.persistence.JoinColumn;
    import javax.persistence.JoinTable;
    import javax.persistence.ManyToMany;
    import javax.persistence.Table;
    import javax.xml.bind.annotation.XmlElement;

    import org.springframework.beans.support.MutableSortDefinition;
    import org.springframework.beans.support.PropertyComparator;
    import org.springframework.samples.petclinic.model.Person;

    /**
     * Simple JavaBean domain object representing a veterinarian.
     *
     * @author Ken Krebs
     * @author Juergen Hoeller
     * @author Sam Brannen
     * @author Arjen Poutsma
     */
    @Entity
    @Table(name = "vets")
    public class Vet extends Person {

        @ManyToMany(fetch = FetchType.EAGER)
        @JoinTable(name = "vet_specialties", joinColumns = @JoinColumn(name = "vet_id"), inverseJoinColumns = @JoinColumn(name = "specialty_id"))
        private Set<Specialty> specialties;

        protected Set<Specialty> getSpecialtiesInternal() {
            if (this.specialties == null) {
                this.specialties = new HashSet<>();
            }
            return this.specialties;
        }

        protected void setSpecialtiesInternal(Set<Specialty> specialties) {
            this.specialties = specialties;
        }

        @XmlElement
        public List<Specialty> getSpecialties() {
            List<Specialty> sortedSpecs = new ArrayList<>(getSpecialtiesInternal());
            PropertyComparator.sort(sortedSpecs,
                    new MutableSortDefinition("name", true, true));
            return Collections.unmodifiableList(sortedSpecs);
        }

        public int getNrOfSpecialties() {
            return getSpecialtiesInternal().size();
        }

        public void addSpecialty(Specialty specialty) {
            getSpecialtiesInternal().add(specialty);
        }

    }