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.handler; 018 019import org.springframework.boot.context.properties.bind.AbstractBindHandler; 020import org.springframework.boot.context.properties.bind.BindContext; 021import org.springframework.boot.context.properties.bind.BindHandler; 022import org.springframework.boot.context.properties.bind.Bindable; 023import org.springframework.boot.context.properties.source.ConfigurationPropertyName; 024import org.springframework.core.convert.ConverterNotFoundException; 025 026/** 027 * {@link BindHandler} that can be used to ignore top-level 028 * {@link ConverterNotFoundException}s. 029 * 030 * @author Madhura Bhave 031 * @since 2.0.1 032 */ 033public class IgnoreTopLevelConverterNotFoundBindHandler extends AbstractBindHandler { 034 035 /** 036 * Create a new {@link IgnoreTopLevelConverterNotFoundBindHandler} instance. 037 */ 038 public IgnoreTopLevelConverterNotFoundBindHandler() { 039 } 040 041 /** 042 * Create a new {@link IgnoreTopLevelConverterNotFoundBindHandler} instance with a 043 * specific parent. 044 * @param parent the parent handler 045 */ 046 public IgnoreTopLevelConverterNotFoundBindHandler(BindHandler parent) { 047 } 048 049 @Override 050 public Object onFailure(ConfigurationPropertyName name, Bindable<?> target, 051 BindContext context, Exception error) throws Exception { 052 if (context.getDepth() == 0 && error instanceof ConverterNotFoundException) { 053 return null; 054 } 055 throw error; 056 } 057 058}