| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the License. You may obtain a |
| * copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License |
| * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| * or implied. See the License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| |
| package org.apache.geode.internal.serialization; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| |
| |
| /** |
| * An extension to {@link DataOutput}, {@link DataInput} used internally in product to indicate that |
| * the input/output stream is attached to a GemFire peer having a different version. |
| * |
| * Internal product classes that implement {@link DataSerializableFixedID} |
| * and change serialization format must check this on DataInput/DataOutput |
| * (see {@link SerializationContext#getSerializationVersion()} methods) and deal with serialization |
| * with previous {@link Version}s appropriately. |
| */ |
| public interface VersionedDataStream { |
| |
| /** |
| * If the remote peer to which this input/output is connected has a lower version that this |
| * member, then this returns the {@link Version} of the peer else null. If the peer has a |
| * higher |
| * {@link Version}, then this member cannot do any adjustment to serialization and its the remote |
| * peer's responsibility to adjust the serialization/deserialization according to this peer. |
| */ |
| Version getVersion(); |
| } |
