| /* |
| * 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.api.ldap.codec.factory; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| |
| import org.apache.directory.api.asn1.ber.tlv.BerValue; |
| import org.apache.directory.api.asn1.util.Asn1Buffer; |
| import org.apache.directory.api.ldap.codec.api.LdapApiService; |
| import org.apache.directory.api.ldap.codec.api.LdapCodecConstants; |
| import org.apache.directory.api.ldap.model.entry.Attribute; |
| import org.apache.directory.api.ldap.model.entry.Modification; |
| import org.apache.directory.api.ldap.model.entry.ModificationOperation; |
| import org.apache.directory.api.ldap.model.entry.Value; |
| import org.apache.directory.api.ldap.model.message.Message; |
| import org.apache.directory.api.ldap.model.message.ModifyRequest; |
| import org.apache.directory.api.util.CollectionUtils; |
| |
| /** |
| * The ModifyRequest factory. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public final class ModifyRequestFactory implements Messagefactory |
| { |
| /** The static instance */ |
| public static final ModifyRequestFactory INSTANCE = new ModifyRequestFactory(); |
| |
| private ModifyRequestFactory() |
| { |
| // Nothing to do |
| } |
| |
| |
| /** |
| * Encode the values, in reverse order |
| * <pre> |
| * 0x04 LL attributeValue |
| * ... |
| * 0x04 LL attributeValue |
| * </pre> |
| * |
| * @param buffer The buffer where to put the PDU |
| * @param values the values to encode |
| */ |
| private void encodeValues( Asn1Buffer buffer, Iterator<Value> values ) |
| { |
| values = CollectionUtils.reverse( values ); |
| while ( values.hasNext() ) |
| { |
| Value value = values.next(); |
| |
| // The value |
| if ( value.isHumanReadable() ) |
| { |
| BerValue.encodeOctetString( buffer, value.getString() ); |
| } |
| else |
| { |
| BerValue.encodeOctetString( buffer, value.getBytes() ); |
| } |
| } |
| } |
| |
| /** |
| * Encode the modifications, starting from the last one. |
| * <pre> |
| * 0x30 LL modification sequence |
| * 0x0A 0x01 operation |
| * 0x30 LL modification |
| * 0x04 LL type |
| * 0x31 LL vals |
| * 0x04 LL attributeValue |
| * ... |
| * 0x04 LL attributeValue |
| * </pre> |
| * |
| * @param buffer The buffer where to put the PDU |
| * @param modifications the modifications to encode |
| */ |
| private void encodeModifications( Asn1Buffer buffer, Iterator<Modification> modifications ) |
| { |
| modifications = CollectionUtils.reverse( modifications ); |
| while ( modifications.hasNext() ) |
| { |
| Modification modification = modifications.next(); |
| |
| int start = buffer.getPos(); |
| |
| // The Attribute |
| Attribute attribute = modification.getAttribute(); |
| |
| // The values, if any |
| if ( modification.getAttribute().size() != 0 ) |
| { |
| encodeValues( buffer, modification.getAttribute().iterator() ); |
| |
| // the value set |
| BerValue.encodeSet( buffer, start ); |
| } |
| else if ( modification.getOperation() != ModificationOperation.INCREMENT_ATTRIBUTE ) |
| { |
| // the value set, if not a INCREMENT operation |
| BerValue.encodeSet( buffer, start ); |
| } |
| |
| // The attribute type |
| BerValue.encodeOctetString( buffer, attribute.getUpId() ); |
| |
| // The attribute sequence |
| BerValue.encodeSequence( buffer, start ); |
| |
| // The operation |
| BerValue.encodeEnumerated( buffer, modification.getOperation().getValue() ); |
| |
| // The modification sequence |
| BerValue.encodeSequence( buffer, start ); |
| } |
| } |
| |
| /** |
| * Encode the ModifyRequest message to a PDU. |
| * <br> |
| * ModifyRequest : |
| * <pre> |
| * 0x66 LL |
| * 0x04 LL object |
| * 0x30 LL modifications |
| * 0x30 LL modification sequence |
| * 0x0A 0x01 operation |
| * 0x30 LL modification |
| * 0x04 LL type |
| * 0x31 LL vals |
| * 0x04 LL attributeValue |
| * ... |
| * 0x04 LL attributeValue |
| * ... |
| * 0x30 LL modification sequence |
| * 0x0A 0x01 operation |
| * 0x30 LL modification |
| * 0x04 LL type |
| * 0x31 LL vals |
| * 0x04 LL attributeValue |
| * ... |
| * 0x04 LL attributeValue |
| * </pre> |
| * |
| * @param codec The LdapApiService instance |
| * @param buffer The buffer where to put the PDU |
| * @param message the ModifyRequest to encode |
| */ |
| @Override |
| public void encodeReverse( LdapApiService codec, Asn1Buffer buffer, Message message ) |
| { |
| int start = buffer.getPos(); |
| ModifyRequest modifyRequest = ( ModifyRequest ) message; |
| |
| // The modifications, if any |
| Collection<Modification> modifications = modifyRequest.getModifications(); |
| |
| if ( ( modifications != null ) && ( !modifications.isEmpty() ) ) |
| { |
| encodeModifications( buffer, modifications.iterator() ); |
| |
| // The modifications sequence |
| BerValue.encodeSequence( buffer, start ); |
| } |
| |
| // The entry DN |
| BerValue.encodeOctetString( buffer, modifyRequest.getName().getName() ); |
| |
| // The ModifyRequest tag |
| BerValue.encodeSequence( buffer, LdapCodecConstants.MODIFY_REQUEST_TAG, start ); |
| } |
| } |