| /* |
| * Copyright (c) 1998, 2020 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation from Oracle TopLink |
| package org.eclipse.persistence.testing.models.inheritance; |
| |
| import java.util.*; |
| import java.io.*; |
| import java.math.BigDecimal; |
| import org.eclipse.persistence.indirection.*; |
| |
| /** |
| * STI stands for Single Table Inheritance. |
| * STI_Employee references and referenced by STI_Project class, |
| * which is mapped with its subclasses STI_SmallProject and STI_LargeProject |
| * to a single table. |
| * STI_Employee is a simplified version of Employee. |
| */ |
| public class STI_Employee implements Serializable { |
| /** Primary key, maped as a direct-to-field, BigDecimal -> NUMBER, that makes use of sequence numbers to generate the id. */ |
| public BigDecimal id; |
| |
| /** Direct-to-field mapping, String -> VARCHAR. */ |
| public String firstName; |
| |
| /** Direct-to-field mapping, String -> VARCHAR. */ |
| public String lastName; |
| |
| /** One-to-one mapping (same class relationship), employee references its manager through a foreign key. */ |
| public ValueHolderInterface manager; |
| |
| /** One-to-many mapping (same class relationship), inverse relationship to manager, uses manager foreign key in the target. */ |
| public ValueHolderInterface managedEmployees; |
| |
| /** Many-to-many mapping, employee references its projects through an intermediate join table. */ |
| public ValueHolderInterface projects; |
| |
| /** |
| * For fields that make use of indirection the constructor should build the value holders. |
| */ |
| public STI_Employee() { |
| this.firstName = ""; |
| this.lastName = ""; |
| this.manager = new ValueHolder(); |
| this.managedEmployees = new ValueHolder(new Vector()); |
| this.projects = new ValueHolder(new Vector()); |
| } |
| |
| /** |
| * For bi-directional relationships, it is important to maintain both sides of the relationship when changing it. |
| */ |
| public void addManagedEmployee(STI_Employee employee) { |
| getManagedEmployees().addElement(employee); |
| employee.setManager(this); |
| } |
| |
| public void addProject(STI_Project project) { |
| getProjects().addElement(project); |
| } |
| |
| public String getFirstName() { |
| return firstName; |
| } |
| |
| public BigDecimal getId() { |
| return id; |
| } |
| |
| public String getLastName() { |
| return lastName; |
| } |
| |
| /** |
| * Notice that the usage of value holders does not effect the public interface or usage of the class. |
| * The get/set methods must however be changed to wrap/unwrap the value holder. |
| */ |
| public Vector getManagedEmployees() { |
| return (Vector)managedEmployees.getValue(); |
| } |
| |
| /** |
| * Notice that the usage of value holders does not effect the public interface or usage of the class. |
| * The get/set methods must however be changed to wrap/unwrap the value holder. |
| */ |
| public STI_Employee getManager() { |
| return (STI_Employee)manager.getValue(); |
| } |
| |
| /** |
| * Notice that the usage of value holders does not effect the public interface or usage of the class. |
| * The get/set methods must however be changed to wrap/unwrap the value holder. |
| */ |
| public Vector getProjects() { |
| return (Vector)projects.getValue(); |
| } |
| |
| /** |
| * For bi-directional relationships, it is important to maintain both sides of the relationship when changing it. |
| */ |
| public void removeManagedEmployee(STI_Employee employee) { |
| getManagedEmployees().removeElement(employee); |
| employee.setManager(null); |
| } |
| |
| public void removeProject(STI_Project project) { |
| getProjects().removeElement(project); |
| } |
| |
| public void setFirstName(String firstName) { |
| this.firstName = firstName; |
| } |
| |
| /** |
| * Set the persistent identifier of the receiver. |
| * Note this should never be changed. |
| * Consider making the primary key set methods protected or not having them. |
| */ |
| public void setId(BigDecimal id) { |
| this.id = id; |
| } |
| |
| public void setLastName(String lastName) { |
| this.lastName = lastName; |
| } |
| |
| /** |
| * Notice that the usage of value holders does not effect the public interface or usage of the class. |
| * The get/set methods must however be changed to wrap/unwrap the value holder. |
| */ |
| public void setManagedEmployees(Vector managedEmployees) { |
| this.managedEmployees.setValue(managedEmployees); |
| } |
| |
| /** |
| * For bi-directional relationships, it is important to maintain both sides of the relationship when changing it. |
| * Notice that the usage of value holders does not effect the public interface or usage of the class. |
| * The get/set methods must however be changed to wrap/unwrap the value holder. |
| */ |
| public void setManager(STI_Employee manager) { |
| this.manager.setValue(manager); |
| } |
| |
| /** |
| * Notice that the usage of value holders does not effect the public interface or usage of the class. |
| * The get/set methods must however be changed to wrap/unwrap the value holder. |
| */ |
| public void setProjects(Vector projects) { |
| this.projects.setValue(projects); |
| } |
| |
| /** |
| * Print the first & last name |
| */ |
| public String toString() { |
| StringWriter writer = new StringWriter(); |
| |
| writer.write("STI_Employee: "); |
| writer.write(getFirstName()); |
| writer.write(" "); |
| writer.write(getLastName()); |
| return writer.toString(); |
| } |
| } |