| 1 | /* |
| 2 | * Copyright 2012-2013 the original author or authors. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.springframework.batch.core.repository.dao; |
| 17 | |
| 18 | import org.springframework.batch.core.repository.ExecutionContextSerializer; |
| 19 | import org.springframework.core.serializer.DefaultDeserializer; |
| 20 | import org.springframework.core.serializer.DefaultSerializer; |
| 21 | import org.springframework.core.serializer.Deserializer; |
| 22 | import org.springframework.core.serializer.Serializer; |
| 23 | import org.springframework.util.Assert; |
| 24 | |
| 25 | import java.io.IOException; |
| 26 | import java.io.InputStream; |
| 27 | import java.io.OutputStream; |
| 28 | import java.io.Serializable; |
| 29 | import java.util.Map; |
| 30 | |
| 31 | /** |
| 32 | * An implementation of the {@link ExecutionContextSerializer} using the default |
| 33 | * serialization implementations from Spring ({@link DefaultSerializer} and |
| 34 | * {@link DefaultDeserializer}). |
| 35 | * |
| 36 | * @author Michael Minella |
| 37 | * @since 2.2 |
| 38 | */ |
| 39 | @SuppressWarnings("rawtypes") |
| 40 | public class DefaultExecutionContextSerializer implements ExecutionContextSerializer { |
| 41 | |
| 42 | private Serializer serializer = new DefaultSerializer(); |
| 43 | private Deserializer deserializer = new DefaultDeserializer(); |
| 44 | |
| 45 | /** |
| 46 | * Serializes an execution context to the provided {@link OutputStream}. The |
| 47 | * stream is not closed prior to it's return. |
| 48 | * |
| 49 | * @param context |
| 50 | * @param out |
| 51 | */ |
| 52 | @Override |
| 53 | @SuppressWarnings("unchecked") |
| 54 | public void serialize(Object context, OutputStream out) throws IOException { |
| 55 | Assert.notNull(context); |
| 56 | Assert.notNull(out); |
| 57 | for(Object value : ((Map)context).values()) { |
| 58 | Assert.isInstanceOf(Serializable.class, value, "Value: [ " + value + "must be serializable."); |
| 59 | } |
| 60 | |
| 61 | serializer.serialize(context, out); |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * Deserializes an execution context from the provided {@link InputStream}. |
| 66 | * |
| 67 | * @param inputStream |
| 68 | * @return the object serialized in the provided {@link InputStream} |
| 69 | */ |
| 70 | @Override |
| 71 | public Object deserialize(InputStream inputStream) throws IOException { |
| 72 | return deserializer.deserialize(inputStream); |
| 73 | } |
| 74 | |
| 75 | } |