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.context.properties.bind; 018 019import org.springframework.boot.context.properties.source.ConfigurationPropertyName; 020import org.springframework.util.Assert; 021 022/** 023 * Abstract base class for {@link BindHandler} implementations. 024 * 025 * @author Phillip Webb 026 * @author Madhura Bhave 027 * @since 2.0.0 028 */ 029public abstract class AbstractBindHandler implements BindHandler { 030 031 private final BindHandler parent; 032 033 /** 034 * Create a new binding handler instance. 035 */ 036 public AbstractBindHandler() { 037 this(BindHandler.DEFAULT); 038 } 039 040 /** 041 * Create a new binding handler instance with a specific parent. 042 * @param parent the parent handler 043 */ 044 public AbstractBindHandler(BindHandler parent) { 045 Assert.notNull(parent, "Parent must not be null"); 046 this.parent = parent; 047 } 048 049 @Override 050 public <T> Bindable<T> onStart(ConfigurationPropertyName name, Bindable<T> target, 051 BindContext context) { 052 return this.parent.onStart(name, target, context); 053 } 054 055 @Override 056 public Object onSuccess(ConfigurationPropertyName name, Bindable<?> target, 057 BindContext context, Object result) { 058 return this.parent.onSuccess(name, target, context, result); 059 } 060 061 @Override 062 public Object onFailure(ConfigurationPropertyName name, Bindable<?> target, 063 BindContext context, Exception error) throws Exception { 064 return this.parent.onFailure(name, target, context, error); 065 } 066 067 @Override 068 public void onFinish(ConfigurationPropertyName name, Bindable<?> target, 069 BindContext context, Object result) throws Exception { 070 this.parent.onFinish(name, target, context, result); 071 } 072 073}