001/* 002 * Copyright 2002-2020 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.core.serializer; 018 019import java.io.ByteArrayInputStream; 020import java.io.IOException; 021import java.io.InputStream; 022 023/** 024 * A strategy interface for converting from data in an InputStream to an Object. 025 * 026 * @author Gary Russell 027 * @author Mark Fisher 028 * @author Juergen Hoeller 029 * @since 3.0.5 030 * @param <T> the object type 031 * @see Serializer 032 */ 033@FunctionalInterface 034public interface Deserializer<T> { 035 036 /** 037 * Read (assemble) an object of type T from the given InputStream. 038 * <p>Note: Implementations should not close the given InputStream 039 * (or any decorators of that InputStream) but rather leave this up 040 * to the caller. 041 * @param inputStream the input stream 042 * @return the deserialized object 043 * @throws IOException in case of errors reading from the stream 044 */ 045 T deserialize(InputStream inputStream) throws IOException; 046 047 /** 048 * Read (assemble) an object of type T from the given byte array. 049 * @param serialized the byte array 050 * @return the deserialized object 051 * @throws IOException in case of deserialization failure 052 * @since 5.2.7 053 */ 054 default T deserializeFromByteArray(byte[] serialized) throws IOException { 055 return deserialize(new ByteArrayInputStream(serialized)); 056 } 057 058}