| /* |
| * 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.directory.server.ldap.replication; |
| |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutput; |
| import java.io.ObjectOutputStream; |
| |
| import jdbm.helper.Serializer; |
| |
| import org.apache.directory.api.ldap.model.entry.DefaultEntry; |
| import org.apache.directory.api.ldap.model.entry.Entry; |
| import org.apache.directory.api.ldap.model.message.controls.ChangeType; |
| import org.apache.directory.api.ldap.model.name.Dn; |
| import org.apache.directory.api.ldap.model.schema.SchemaManager; |
| |
| |
| /** |
| * A ReplicaEventMessage serializer/deserializer. |
| * |
| * A modification is serialized following this format : <br> |
| * <ul> |
| * <li>byte : EventType</li> |
| * <li>byte[] : the serialized DN</li> |
| * <li>byte[] : the serialized entry</li> |
| * </ul> |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class ReplicaEventMessageSerializer implements Serializer |
| { |
| /** The serialVersionUID */ |
| private static final long serialVersionUID = 1L; |
| |
| /** The schemaManager */ |
| private transient SchemaManager schemaManager; |
| |
| |
| /** |
| * Creates a new instance of ReplicaEventMessageSerializer. |
| * |
| * @param schemaManager The reference to the global schemaManager |
| */ |
| public ReplicaEventMessageSerializer( SchemaManager schemaManager ) |
| { |
| this.schemaManager = schemaManager; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public byte[] serialize( Object object ) throws IOException |
| { |
| ReplicaEventMessage replicaEventMessage = ( ReplicaEventMessage ) object; |
| |
| Entry entry = replicaEventMessage.getEntry(); |
| ChangeType changeType = replicaEventMessage.getChangeType(); |
| |
| try ( ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| ObjectOutput out = new ObjectOutputStream( baos ) ) |
| { |
| |
| // The change type first |
| out.writeByte( changeType.getValue() ); |
| |
| // The entry DN |
| entry.getDn().writeExternal( out ); |
| |
| // The entry |
| entry.writeExternal( out ); |
| |
| out.flush(); |
| |
| return baos.toByteArray(); |
| } |
| } |
| |
| |
| /** |
| * Deserialize a ReplicaEventMessage. |
| * |
| * @param bytes the byte array containing the serialized ReplicaEventMessage |
| * @return An instance of a ReplicaEventMessage object |
| * @throws IOException if we can't deserialize the ReplicaEventMessage |
| */ |
| public Object deserialize( byte[] bytes ) throws IOException |
| { |
| ObjectInputStream in = new ObjectInputStream( new ByteArrayInputStream( bytes ) ); |
| |
| ReplicaEventMessage replicaEventMessage = null; |
| |
| try |
| { |
| // The changeType |
| byte type = in.readByte(); |
| ChangeType changeType = ChangeType.getChangeType( type ); |
| |
| // The Entry's DN |
| Dn entryDn = new Dn( schemaManager ); |
| entryDn.readExternal( in ); |
| |
| // The Entry |
| Entry entry = new DefaultEntry( schemaManager ); |
| entry.readExternal( in ); |
| entry.setDn( entryDn ); |
| |
| // And create a ReplicaEventMessage |
| replicaEventMessage = new ReplicaEventMessage( changeType, entry ); |
| } |
| catch ( ClassNotFoundException cnfe ) |
| { |
| // there is nothing we can do here... |
| } |
| |
| return replicaEventMessage; |
| } |
| } |