001/* 002 * Copyright 2012-2018 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.boot.origin; 018 019import org.springframework.util.Assert; 020import org.springframework.util.ObjectUtils; 021 022/** 023 * {@link Origin} for an item loaded from the system environment. Provides access to the 024 * original property name. 025 * 026 * @author Madhura Bhave 027 * @since 2.0.0 028 */ 029public class SystemEnvironmentOrigin implements Origin { 030 031 private final String property; 032 033 public SystemEnvironmentOrigin(String property) { 034 Assert.notNull(property, "Property name must not be null"); 035 Assert.hasText(property, "Property name must not be empty"); 036 this.property = property; 037 } 038 039 public String getProperty() { 040 return this.property; 041 } 042 043 @Override 044 public boolean equals(Object obj) { 045 if (this == obj) { 046 return true; 047 } 048 if (obj == null || getClass() != obj.getClass()) { 049 return false; 050 } 051 SystemEnvironmentOrigin other = (SystemEnvironmentOrigin) obj; 052 return ObjectUtils.nullSafeEquals(this.property, other.property); 053 } 054 055 @Override 056 public int hashCode() { 057 return ObjectUtils.nullSafeHashCode(this.property); 058 } 059 060 @Override 061 public String toString() { 062 return "System Environment Property \"" + this.property + "\""; 063 } 064 065}