001/* 002 * Copyright 2002-2018 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 * https://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.beans.factory.support; 018 019import org.springframework.lang.Nullable; 020import org.springframework.util.Assert; 021 022/** 023 * Tag collection class used to hold managed array elements, which may 024 * include runtime bean references (to be resolved into bean objects). 025 * 026 * @author Juergen Hoeller 027 * @since 3.0 028 */ 029@SuppressWarnings("serial") 030public class ManagedArray extends ManagedList<Object> { 031 032 /** Resolved element type for runtime creation of the target array. */ 033 @Nullable 034 volatile Class<?> resolvedElementType; 035 036 037 /** 038 * Create a new managed array placeholder. 039 * @param elementTypeName the target element type as a class name 040 * @param size the size of the array 041 */ 042 public ManagedArray(String elementTypeName, int size) { 043 super(size); 044 Assert.notNull(elementTypeName, "elementTypeName must not be null"); 045 setElementTypeName(elementTypeName); 046 } 047 048}