| /* |
| * 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.shared.ldap.name; |
| |
| import java.io.IOException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| |
| import org.apache.directory.shared.ldap.entry.BinaryValue; |
| import org.apache.directory.shared.ldap.entry.StringValue; |
| import org.apache.directory.shared.ldap.entry.Value; |
| import org.apache.directory.shared.ldap.exception.LdapInvalidDnException; |
| import org.apache.directory.shared.ldap.util.StringTools; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * A helper class which serialize and deserialize an AttributeTypeAndValue |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| * @version $Rev$, $Date$ |
| */ |
| public class AVASerializer |
| { |
| /** The LoggerFactory used by this class */ |
| protected static final Logger LOG = LoggerFactory.getLogger( AVASerializer.class ); |
| |
| /** |
| * Serialize an AttributeTypeAndValue object. |
| * |
| * An AttributeTypeAndValue is composed of a type and a value. |
| * The data are stored following the structure : |
| * |
| * <li>upName</li> The User provided ATAV |
| * <li>start</li> The position of this ATAV in the DN |
| * <li>length</li> The ATAV length |
| * <li>upType</li> The user Provided Type |
| * <li>normType</li> The normalized AttributeType |
| * <li>isHR<li> Tells if the value is a String or not |
| * <p> |
| * if the value is a String : |
| * <li>upValue</li> The User Provided value. |
| * <li>value</li> The normalized value. |
| * <p> |
| * if the value is binary : |
| * <li>upValueLength</li> |
| * <li>upValue</li> The User Provided value. |
| * <li>valueLength</li> |
| * <li>value</li> The normalized value. |
| * |
| * @param atav the AttributeTypeAndValue to serialize |
| * @param out the OutputStream in which the atav will be serialized |
| * @throws IOException If we can't serialize the atav |
| */ |
| public static void serialize( AVA atav, ObjectOutput out ) throws IOException |
| { |
| if ( StringTools.isEmpty( atav.getUpName() ) || |
| StringTools.isEmpty( atav.getUpType() ) || |
| StringTools.isEmpty( atav.getNormType() ) || |
| ( atav.getStart() < 0 ) || |
| ( atav.getLength() < 2 ) || // At least a type and '=' |
| ( atav.getUpValue().isNull() ) || |
| ( atav.getNormValue().isNull() ) ) |
| { |
| String message = "Cannot serialize an wrong ATAV, "; |
| |
| if ( StringTools.isEmpty( atav.getUpName() ) ) |
| { |
| message += "the upName should not be null or empty"; |
| } |
| else if ( StringTools.isEmpty( atav.getUpType() ) ) |
| { |
| message += "the upType should not be null or empty"; |
| } |
| else if ( StringTools.isEmpty( atav.getNormType() ) ) |
| { |
| message += "the normType should not be null or empty"; |
| } |
| else if ( atav.getStart() < 0 ) |
| { |
| message += "the start should not be < 0"; |
| } |
| else if ( atav.getLength() < 2 ) |
| { |
| message += "the length should not be < 2"; |
| } |
| else if ( atav.getUpValue().isNull() ) |
| { |
| message += "the upValue should not be null"; |
| } |
| else if ( atav.getNormValue().isNull() ) |
| { |
| message += "the value should not be null"; |
| } |
| |
| LOG.error( message ); |
| throw new IOException( message ); |
| } |
| |
| out.writeUTF( atav.getUpName() ); |
| out.writeInt( atav.getStart() ); |
| out.writeInt( atav.getLength() ); |
| out.writeUTF( atav.getUpType() ); |
| out.writeUTF( atav.getNormType() ); |
| |
| boolean isHR = !atav.getNormValue().isBinary(); |
| |
| out.writeBoolean( isHR ); |
| |
| if ( isHR ) |
| { |
| out.writeUTF( atav.getUpValue().getString() ); |
| out.writeUTF( atav.getNormValue().getString() ); |
| } |
| else |
| { |
| out.writeInt( atav.getUpValue().length() ); |
| out.write( atav.getUpValue().getBytes() ); |
| out.writeInt( atav.getNormValue().length() ); |
| out.write( atav.getNormValue().getBytes() ); |
| } |
| } |
| |
| |
| /** |
| * Deserialize an AttributeTypeAndValue object |
| * |
| * We read back the data to create a new ATAV. The structure |
| * read is exposed in the {@link AVA#writeExternal(ObjectOutput)} |
| * method<p> |
| * |
| * @param in the input stream |
| * @throws IOException If the input stream can't be read |
| * @return The constructed AttributeTypeAndValue |
| */ |
| public static AVA deserialize( ObjectInput in ) throws IOException |
| { |
| String upName = in.readUTF(); |
| in.readInt(); // start |
| in.readInt(); // length |
| String upType = in.readUTF(); |
| String normType = in.readUTF(); |
| |
| boolean isHR = in.readBoolean(); |
| |
| try |
| { |
| if ( isHR ) |
| { |
| Value<String> upValue = new StringValue( in.readUTF() ); |
| Value<String> normValue = new StringValue( in.readUTF() ); |
| |
| AVA atav = |
| new AVA( upType, normType, upValue, normValue, upName ); |
| |
| return atav; |
| } |
| else |
| { |
| int upValueLength = in.readInt(); |
| byte[] upValue = new byte[upValueLength]; |
| in.readFully( upValue ); |
| |
| int valueLength = in.readInt(); |
| byte[] normValue = new byte[valueLength]; |
| in.readFully( normValue ); |
| |
| AVA atav = |
| new AVA( upType, normType, |
| new BinaryValue( upValue) , |
| new BinaryValue( normValue ), upName ); |
| |
| return atav; |
| } |
| } |
| catch ( LdapInvalidDnException ine ) |
| { |
| throw new IOException( ine.getMessage() ); |
| } |
| } |
| } |