/*
* 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;
import java.io.DataInput;
import java.io.DataOutput;
import org.apache.geode.DataSerializable;
/**
* 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
* {@link DataSerializable} and change serialization format must check this on DataInput/DataOutput
* (see {@link InternalDataSerializer#getVersionForDataStream} methods) and deal with serialization
* with previous {@link Version}s appropriately.
*
* @since GemFire 7.1
*/
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.
*/
public Version getVersion();
}