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.convert; 018 019import java.lang.annotation.Documented; 020import java.lang.annotation.ElementType; 021import java.lang.annotation.Retention; 022import java.lang.annotation.RetentionPolicy; 023import java.lang.annotation.Target; 024 025/** 026 * Declares a field or method parameter should be converted to collection using the 027 * specified delimiter. 028 * 029 * @author Phillip Webb 030 * @since 2.0.0 031 */ 032@Documented 033@Retention(RetentionPolicy.RUNTIME) 034@Target({ ElementType.METHOD, ElementType.FIELD, ElementType.PARAMETER, 035 ElementType.ANNOTATION_TYPE }) 036public @interface Delimiter { 037 038 /** 039 * A delimiter value used to indicate that no delimiter is required and the result 040 * should be a single element containing the entire string. 041 */ 042 String NONE = ""; 043 044 /** 045 * The delimiter to use or {@code NONE} if the entire contents should be treated as a 046 * single element. 047 * @return the delimiter 048 */ 049 String value(); 050 051}