Java tutorial
/* * Copyright 2013 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 * * http://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 com.vladmihalcea.hibernate.model.store; import org.apache.commons.lang.builder.EqualsBuilder; import org.apache.commons.lang.builder.HashCodeBuilder; import org.apache.commons.lang.builder.ToStringBuilder; import javax.persistence.*; @Entity public class WarehouseProductInfo { @Id @GeneratedValue(strategy = GenerationType.AUTO) private Long id; private int quantity; @OneToOne(fetch = FetchType.EAGER) @PrimaryKeyJoinColumn private Product product; public Long getId() { return id; } public int getQuantity() { return quantity; } public void setQuantity(int quantity) { this.quantity = quantity; } public Product getProduct() { return product; } public void setProduct(Product product) { this.product = product; } @Override public int hashCode() { HashCodeBuilder hcb = new HashCodeBuilder(); hcb.append(product); return hcb.toHashCode(); } @Override public boolean equals(Object obj) { if (this == obj) { return true; } if (!(obj instanceof WarehouseProductInfo)) { return false; } WarehouseProductInfo that = (WarehouseProductInfo) obj; EqualsBuilder eb = new EqualsBuilder(); eb.append(product, that.getProduct()); return eb.isEquals(); } @Override public String toString() { ToStringBuilder tsb = new ToStringBuilder(this); tsb.append("id", id); tsb.append("name", quantity); tsb.append("product", product); return tsb.toString(); } }