Java tutorial
/* * The MIT License (MIT) * * Copyright (c) 2013 Ian Hlavats. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * */ package com.mycompany.model; import java.util.HashSet; import java.util.Set; import javax.persistence.Entity; import javax.persistence.FetchType; import javax.persistence.NamedQueries; import javax.persistence.NamedQuery; import javax.persistence.OneToMany; import org.apache.commons.lang.builder.EqualsBuilder; import org.apache.commons.lang.builder.HashCodeBuilder; import com.mycompany.util.Queries; /** * JPA entity for country data. * * @author Ian Hlavats (ian@tarantulaconsulting.com) * */ @Entity @NamedQueries({ @NamedQuery(name = Queries.COUNTRY_FIND_BY_CODE, query = "select c from Country c where c.code = ?1"), @NamedQuery(name = Queries.COUNTRY_FIND_ALL, query = "select c from Country c order by c.name") }) public class Country extends AbstractEntity { private static final String[] excludeFields = new String[] { "provinceStates" }; /** * */ private static final long serialVersionUID = -4925972235656394450L; private String code; private String name; private Set<ProvinceState> provinceStates = new HashSet<ProvinceState>(); @Override public boolean equals(Object object) { return EqualsBuilder.reflectionEquals(this, object, excludeFields); } public String getCode() { return code; } public String getName() { return name; } @OneToMany(mappedBy = "country", fetch = FetchType.EAGER) public Set<ProvinceState> getProvinceStates() { return provinceStates; } @Override public int hashCode() { return HashCodeBuilder.reflectionHashCode(this, excludeFields); } public void setCode(String code) { this.code = code; } public void setName(String name) { this.name = name; } public void setProvinceStates(Set<ProvinceState> states) { this.provinceStates = states; } }