Java tutorial
/* * Copyright 2010-2019 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.data.mongodb.core; import org.bson.types.ObjectId; public class Person { private ObjectId id; private String firstName; private int age; private Person friend; private boolean active = true; public Person() { this.id = new ObjectId(); } @Override public String toString() { return "Person [id=" + id + ", firstName=" + firstName + ", age=" + age + ", friend=" + friend + "]"; } public Person(ObjectId id, String firstname) { this.id = id; this.firstName = firstname; } public Person(String firstname, int age) { this(); this.firstName = firstname; this.age = age; } public Person(String firstname) { this(); this.firstName = firstname; } public ObjectId getId() { return id; } public String getFirstName() { return firstName; } public void setFirstName(String firstName) { this.firstName = firstName; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public Person getFriend() { return friend; } public void setFriend(Person friend) { this.friend = friend; } /** * @return the active */ public boolean isActive() { return active; } /* * (non-Javadoc) * * @see java.lang.Object#equals(java.lang.Object) */ @Override public boolean equals(Object obj) { if (obj == this) { return true; } if (obj == null) { return false; } if (!(getClass().equals(obj.getClass()))) { return false; } Person that = (Person) obj; return this.id == null ? false : this.id.equals(that.id); } /* (non-Javadoc) * @see java.lang.Object#hashCode() */ @Override public int hashCode() { return id.hashCode(); } }