| /* |
| * 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.codec.controls.search.subentries; |
| |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.directory.shared.asn1.Asn1Object; |
| import org.apache.directory.shared.asn1.DecoderException; |
| import org.apache.directory.shared.asn1.EncoderException; |
| import org.apache.directory.shared.asn1.ber.Asn1Decoder; |
| import org.apache.directory.shared.asn1.ber.tlv.Value; |
| import org.apache.directory.shared.i18n.I18n; |
| import org.apache.directory.shared.ldap.codec.api.LdapCodecService; |
| import org.apache.directory.shared.ldap.codec.controls.ControlDecorator; |
| import org.apache.directory.shared.ldap.model.message.controls.Subentries; |
| import org.apache.directory.shared.ldap.model.message.controls.SubentriesImpl; |
| |
| |
| /** |
| * A Subentries Control implementation which wraps and decorates Subentries |
| * Controls to enable them to be encoded and decoded by the codec. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class SubentriesDecorator extends ControlDecorator<Subentries> implements Subentries |
| { |
| /** The sub entry decoder */ |
| private static final Asn1Decoder decoder = new Asn1Decoder(); |
| |
| |
| /** |
| * Default constructor |
| */ |
| public SubentriesDecorator( LdapCodecService codec ) |
| { |
| this( codec, new SubentriesImpl() ); |
| } |
| |
| |
| /** |
| * Creates a Subentries decorating implementation for use with the codec, |
| * while decorating the supplied Subentries control. |
| * |
| * @param control The Subentries Control to wrap with this decorator. |
| */ |
| public SubentriesDecorator( LdapCodecService codec, Subentries control ) |
| { |
| super( codec, control ); |
| } |
| |
| |
| /** |
| * Compute the SubEntryControl length 0x01 0x01 [0x00|0xFF] |
| */ |
| public int computeLength() |
| { |
| return 1 + 1 + 1; |
| } |
| |
| |
| /** |
| * Encodes the Subentries control. |
| * |
| * @param buffer The encoded sink |
| * @return A ByteBuffer that contains the encoded PDU |
| * @throws org.apache.directory.shared.asn1.EncoderException If anything goes wrong. |
| */ |
| public ByteBuffer encode( ByteBuffer buffer ) throws EncoderException |
| { |
| if ( buffer == null ) |
| { |
| throw new EncoderException( I18n.err( I18n.ERR_04023 ) ); |
| } |
| |
| // Now encode the Subentries specific part |
| Value.encode( buffer, isVisible() ); |
| |
| return buffer; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public byte[] getValue() |
| { |
| if ( value == null ) |
| { |
| try |
| { |
| computeLength(); |
| ByteBuffer buffer = ByteBuffer.allocate( valueLength ); |
| |
| // Now encode the Subentries specific part |
| Value.encode( buffer, isVisible() ); |
| |
| value = buffer.array(); |
| } |
| catch ( Exception e ) |
| { |
| return null; |
| } |
| } |
| |
| return value; |
| } |
| |
| |
| public boolean isVisible() |
| { |
| return getDecorated().isVisible(); |
| } |
| |
| |
| public void setVisibility( boolean visibility ) |
| { |
| getDecorated().setVisibility( visibility ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public Asn1Object decode( byte[] controlBytes ) throws DecoderException |
| { |
| ByteBuffer bb = ByteBuffer.wrap( controlBytes ); |
| SubentriesContainer container = new SubentriesContainer( this ); |
| decoder.decode( bb, container ); |
| |
| return this; |
| } |
| } |