| /* |
| * 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 |
| * |
| * https://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.controls.sort; |
| |
| |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.apache.directory.api.asn1.DecoderException; |
| 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.AbstractControlFactory; |
| import org.apache.directory.api.ldap.codec.api.ControlFactory; |
| import org.apache.directory.api.ldap.codec.api.LdapApiService; |
| import org.apache.directory.api.ldap.model.message.Control; |
| import org.apache.directory.api.ldap.model.message.controls.SortKey; |
| import org.apache.directory.api.ldap.model.message.controls.SortRequest; |
| import org.apache.directory.api.ldap.model.message.controls.SortRequestImpl; |
| import org.apache.directory.api.util.Strings; |
| |
| |
| /** |
| * A {@link ControlFactory} for SortRequestControl. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| * @version $Rev$, $Date$ |
| */ |
| public class SortRequestFactory extends AbstractControlFactory<SortRequest> |
| { |
| /** ASN.1 BER tag for the forward ordering rule */ |
| public static final int ORDERING_RULE_TAG = 0x80; |
| |
| /** ASN.1 BER tag for the backward ordering rule */ |
| public static final int REVERSE_ORDER_TAG = 0x81; |
| |
| /** |
| * Creates a new instance of SortRequestFactory. |
| * |
| * @param codec The LDAP codec. |
| */ |
| public SortRequestFactory( LdapApiService codec ) |
| { |
| super( codec, SortRequest.OID ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public SortRequest newControl() |
| { |
| return new SortRequestImpl(); |
| } |
| |
| |
| /** |
| * |
| * Encode the SortKeys recursively |
| * |
| * @param buffer the buffer that will contain the encoded value |
| * @param sortKeys The Sortkeys to encode |
| */ |
| private void encodeSortKeys( Asn1Buffer buffer, Iterator<SortKey> sortKeys ) |
| { |
| if ( sortKeys.hasNext() ) |
| { |
| SortKey sortKey = sortKeys.next(); |
| |
| // Recurse |
| encodeSortKeys( buffer, sortKeys ); |
| |
| int start = buffer.getPos(); |
| |
| // The reverseOrder flag |
| if ( sortKey.isReverseOrder() ) |
| { |
| BerValue.encodeBoolean( buffer, ( byte ) REVERSE_ORDER_TAG, true ); |
| } |
| |
| // The matchingRule ID, if any |
| if ( sortKey.getMatchingRuleId() != null ) |
| { |
| BerValue.encodeOctetString( buffer, ( byte ) ORDERING_RULE_TAG, |
| Strings.getBytesUtf8Ascii( sortKey.getMatchingRuleId() ) ); |
| } |
| |
| // The attributeType |
| BerValue.encodeOctetString( buffer, sortKey.getAttributeTypeDesc() ); |
| |
| // The sequence |
| BerValue.encodeSequence( buffer, start ); |
| } |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void encodeValue( Asn1Buffer buffer, Control control ) |
| { |
| SortRequest sortRequest = ( SortRequest ) control; |
| |
| int start = buffer.getPos(); |
| |
| // Iterate on all the sort keys |
| List<SortKey> sortKeys = sortRequest.getSortKeys(); |
| |
| encodeSortKeys( buffer, sortKeys.iterator() ); |
| |
| // The overall sequence |
| BerValue.encodeSequence( buffer, start ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void decodeValue( Control control, byte[] controlBytes ) throws DecoderException |
| { |
| decodeValue( new SortRequestContainer( control ), control, controlBytes ); |
| } |
| } |