/*
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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 2009 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.io.IOException;
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import org.opends.server.protocols.asn1.*;
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import org.opends.server.loggers.debug.DebugTracer;
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import org.opends.server.types.*;
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import static org.opends.messages.ProtocolMessages.*;
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import static org.opends.server.protocols.asn1.ASN1Constants.
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UNIVERSAL_OCTET_STRING_TYPE;
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import static org.opends.server.loggers.debug.DebugLogger.*;
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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 Subentries Control as defined in RFC 3672. It makes
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* it possible to control the visibility of entries and subentries which are
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* within scope of specific operation.
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*/
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public class SubentriesControl
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extends Control
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{
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/**
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* ControlDecoder implentation to decode this control from a ByteString.
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*/
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private static final class Decoder
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implements ControlDecoder<SubentriesControl>
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{
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/**
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* {@inheritDoc}
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*/
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public SubentriesControl decode(boolean isCritical, ByteString value)
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throws DirectoryException
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{
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if (value == null)
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{
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Message message = ERR_SUBENTRIES_NO_CONTROL_VALUE.get();
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throw new DirectoryException(ResultCode.PROTOCOL_ERROR, message);
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}
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ASN1Reader reader = ASN1.getReader(value);
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boolean visibility;
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try
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{
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visibility = reader.readBoolean();
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}
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catch (Exception e)
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{
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, e);
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}
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Message message =
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ERR_SUBENTRIES_CANNOT_DECODE_VALUE.get(getExceptionMessage(e));
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throw new DirectoryException(ResultCode.PROTOCOL_ERROR, message, e);
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}
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return new SubentriesControl(isCritical, visibility);
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}
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public String getOID()
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{
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return OID_LDAP_SUBENTRIES;
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}
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}
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/**
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* The Control Decoder that can be used to decode this control.
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*/
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public static final ControlDecoder<SubentriesControl> DECODER =
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new Decoder();
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/**
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* The tracer object for the debug logger.
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*/
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private static final DebugTracer TRACER = getTracer();
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// The visibility from the control value.
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private boolean visibility = false;
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/**
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* Creates a new instance of the Subentries Control with the provided
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* information.
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*
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* @param isCritical Indicates whether support for this control
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* should be considered a critical part of the
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* server processing.
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* @param visibility The visibility flag from the control value.
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*/
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public SubentriesControl(boolean isCritical, boolean visibility)
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{
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super(OID_LDAP_SUBENTRIES, isCritical);
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this.visibility = visibility;
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}
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/**
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* Writes this control's value to an ASN.1 writer. The value must be
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* written as an ASN1OctetString.
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*
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* @param writer The ASN.1 writer to use.
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* @throws IOException If a problem occurs while writing to the stream.
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*/
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@Override
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protected void writeValue(ASN1Writer writer) throws IOException
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{
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writer.writeStartSequence(UNIVERSAL_OCTET_STRING_TYPE);
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writer.writeBoolean(visibility);
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writer.writeEndSequence();
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}
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/**
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* Retrieves the visibility for this Subentries Control.
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*
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* @return The visibility for this Subentries Control.
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*/
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public boolean getVisibility()
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{
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return visibility;
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}
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/**
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* Appends a string representation of this Subentries Control to the
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* 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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@Override
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public void toString(StringBuilder buffer)
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{
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buffer.append("SubentriesControl(visibility=\"");
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buffer.append(Boolean.toString(visibility));
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buffer.append("\")");
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}
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}
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