/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2008 Sun Microsystems, Inc.
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*/
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package org.opends.server.controls;
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import org.opends.messages.Message;
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import java.util.ArrayList;
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import org.opends.server.protocols.asn1.ASN1Element;
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import org.opends.server.protocols.asn1.ASN1Enumerated;
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import org.opends.server.protocols.asn1.ASN1OctetString;
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import org.opends.server.protocols.asn1.ASN1Sequence;
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import org.opends.server.protocols.ldap.LDAPResultCode;
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import org.opends.server.types.Control;
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import org.opends.server.types.LDAPException;
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import static org.opends.messages.ProtocolMessages.*;
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import static org.opends.server.util.ServerConstants.*;
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import static org.opends.server.util.StaticUtils.*;
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/**
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* This class implements the server-side sort response control as defined in RFC
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* 2891 section 1.2. The ASN.1 description for the control value is:
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* <BR><BR>
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* <PRE>
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* SortResult ::= SEQUENCE {
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* sortResult ENUMERATED {
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* success (0), -- results are sorted
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* operationsError (1), -- server internal failure
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* timeLimitExceeded (3), -- timelimit reached before
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* -- sorting was completed
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* strongAuthRequired (8), -- refused to return sorted
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* -- results via insecure
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* -- protocol
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* adminLimitExceeded (11), -- too many matching entries
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* -- for the server to sort
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* noSuchAttribute (16), -- unrecognized attribute
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* -- type in sort key
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* inappropriateMatching (18), -- unrecognized or
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* -- inappropriate matching
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* -- rule in sort key
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* insufficientAccessRights (50), -- refused to return sorted
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* -- results to this client
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* busy (51), -- too busy to process
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* unwillingToPerform (53), -- unable to sort
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* other (80)
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* },
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* attributeType [0] AttributeDescription OPTIONAL }
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* </PRE>
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*/
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public class ServerSideSortResponseControl
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extends Control
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{
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/**
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* The BER type to use when encoding the attribute type element.
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*/
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private static final byte TYPE_ATTRIBUTE_TYPE = (byte) 0x80;
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// The result code for the sort result.
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private int resultCode;
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// The attribute type for the sort result.
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private String attributeType;
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/**
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* Creates a new server-side sort response control based on the provided
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* result code and attribute type.
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*
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* @param resultCode The result code for the sort result.
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* @param attributeType The attribute type for the sort result (or
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* {@code null} if there is none).
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*/
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public ServerSideSortResponseControl(int resultCode, String attributeType)
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{
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super(OID_SERVER_SIDE_SORT_RESPONSE_CONTROL, false,
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encodeControlValue(resultCode, attributeType));
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this.resultCode = resultCode;
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this.attributeType = attributeType;
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}
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/**
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* Creates a new server-side sort response control with the provided
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* information.
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*
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* @param oid The OID to use for this control.
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* @param isCritical Indicates whether support for this control should be
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* considered a critical part of the server processing.
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* @param controlValue The encoded value for this control.
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* @param resultCode The result code for the sort result.
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* @param attributeType The attribute type for the sort result.
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*/
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private ServerSideSortResponseControl(String oid, boolean isCritical,
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ASN1OctetString controlValue,
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int resultCode,
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String attributeType)
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{
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super(oid, isCritical, controlValue);
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this.resultCode = resultCode;
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this.attributeType = attributeType;
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}
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/**
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* Retrieves the result code for this sort result.
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*
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* @return The result code for this sort result.
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*/
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public int getResultCode()
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{
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return resultCode;
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}
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/**
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* Retrieves the attribute type for this sort result.
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*
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* @return The attribute type for this sort result, or {@code null} if there
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* is none.
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*/
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public String getAttributeType()
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{
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return attributeType;
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}
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/**
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* Encodes the provided set of result codes and attribute types in a manner
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* suitable for use as the value of this control.
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*
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* @param resultCode The result code for the sort result.
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* @param attributeType The attribute type for the sort result, or
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* {@code null} if there is none.
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*
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* @return The ASN.1 octet string containing the encoded sort result.
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*/
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private static ASN1OctetString encodeControlValue(int resultCode,
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String attributeType)
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{
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ArrayList<ASN1Element> elements = new ArrayList<ASN1Element>(2);
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elements.add(new ASN1Enumerated(resultCode));
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if (attributeType != null)
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{
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elements.add(new ASN1OctetString(TYPE_ATTRIBUTE_TYPE, attributeType));
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}
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return new ASN1OctetString(new ASN1Sequence(elements).encode());
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}
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/**
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* Creates a new server-side sort response control from the contents of the
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* provided control.
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*
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* @param control The generic control containing the information to use to
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* create this server-side sort response control. It must
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* not be {@code null}.
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*
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* @return The server-side sort response control decoded from the provided
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* control.
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*
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* @throws LDAPException If this control cannot be decoded as a valid
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* server-side sort response control.
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*/
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public static ServerSideSortResponseControl decodeControl(Control control)
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throws LDAPException
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{
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ASN1OctetString controlValue = control.getValue();
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if (controlValue == null)
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{
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Message message = INFO_SORTRES_CONTROL_NO_VALUE.get();
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throw new LDAPException(LDAPResultCode.PROTOCOL_ERROR, message);
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}
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try
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{
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ArrayList<ASN1Element> elements =
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ASN1Sequence.decodeAsSequence(control.getValue().value()).elements();
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int resultCode = elements.get(0).decodeAsEnumerated().intValue();
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String attributeType = null;
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if (elements.size() > 1)
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{
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attributeType = elements.get(1).decodeAsOctetString().stringValue();
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}
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return new ServerSideSortResponseControl(control.getOID(),
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control.isCritical(),
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control.getValue(), resultCode,
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attributeType);
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}
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catch (Exception e)
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{
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Message message =
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INFO_SORTRES_CONTROL_CANNOT_DECODE_VALUE.get(getExceptionMessage(e));
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throw new LDAPException(LDAPResultCode.PROTOCOL_ERROR, message, e);
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}
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}
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/**
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* Retrieves a string representation of this server-side sort response
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* control.
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*
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* @return A string representation of this server-side sort response control.
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*/
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public String toString()
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{
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StringBuilder buffer = new StringBuilder();
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toString(buffer);
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return buffer.toString();
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}
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/**
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* Appends a string representation of this server-side sort response control
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* to the provided buffer.
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*
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* @param buffer The buffer to which the information should be appended.
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*/
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public void toString(StringBuilder buffer)
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{
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buffer.append("ServerSideSortResponseControl(resultCode=");
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buffer.append(resultCode);
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if (attributeType != null)
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{
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buffer.append(", attributeType=");
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buffer.append(attributeType);
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}
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buffer.append(")");
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}
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}
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