/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
 * or http://forgerock.org/license/CDDLv1.0.html.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at legal-notices/CDDLv1_0.txt.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information:
 *      Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 *
 *
 *      Copyright 2006-2010 Sun Microsystems, Inc.
 *      Portions Copyright 2011-2015 ForgeRock AS
 */

package org.opends.server.schema;

import static org.opends.server.schema.SchemaConstants.*;

import org.forgerock.i18n.LocalizableMessageBuilder;
import org.forgerock.i18n.slf4j.LocalizedLogger;
import org.forgerock.opendj.ldap.ByteSequence;
import org.forgerock.opendj.ldap.schema.Schema;
import org.forgerock.opendj.ldap.schema.SyntaxImpl;
import org.opends.server.types.DN;
import org.opends.server.types.DirectoryException;
import org.opends.server.types.SubtreeSpecification;

/**
 * Implementation of the subtree specification attribute syntax, which is used
 * to specify the scope of sub-entries (RFC 3672).
 */
final class SubtreeSpecificationSyntaxImpl implements SyntaxImpl
{
  private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();

  @Override
  public String getName()
  {
    return SchemaConstants.SYNTAX_SUBTREE_SPECIFICATION_NAME;
  }

  @Override
  public String getEqualityMatchingRule()
  {
    return EMR_OCTET_STRING_OID;
  }

  @Override
  public String getOrderingMatchingRule()
  {
    return OMR_OCTET_STRING_OID;
  }

  /** {@inheritDoc} */
  @Override
  public String getApproximateMatchingRule()
  {
    return null;
  }

  /** {@inheritDoc} */
  @Override
  public String getSubstringMatchingRule()
  {
    return null;
  }

  /** {@inheritDoc} */
  @Override
  public boolean valueIsAcceptable(final Schema schema, final ByteSequence value,
      final LocalizableMessageBuilder invalidReason)
  {
    // Use the subtree specification code to make this determination.
    try
    {
      SubtreeSpecification.valueOf(DN.rootDN(), value.toString());

      return true;
    }
    catch (DirectoryException e)
    {
      logger.traceException(e);

      invalidReason.append(e.getMessageObject());
      return false;
    }
  }

  @Override
  public boolean isHumanReadable()
  {
    return true;
  }

  /** {@inheritDoc} */
  @Override
  public boolean isBEREncodingRequired()
  {
    return false;
  }

}