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The UnboundID LDAP SDK for Java is a fast, comprehensive, and easy-to-use Java API for communicating with LDAP directory servers and performing related tasks like reading and writing LDIF, encoding and decoding data using base64 and ASN.1 BER, and performing secure communication. This package contains the Standard Edition of the LDAP SDK, which is a complete, general-purpose library for communicating with LDAPv3 directory servers.

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/*
 * Copyright 2016-2018 Ping Identity Corporation
 * All Rights Reserved.
 */
/*
 * Copyright (C) 2016-2018 Ping Identity Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (GPLv2 only)
 * or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see .
 */
package com.unboundid.ldap.sdk.experimental;



import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;

import com.unboundid.ldap.sdk.Attribute;
import com.unboundid.ldap.sdk.DeleteRequest;
import com.unboundid.ldap.sdk.Entry;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.ldap.sdk.OperationType;
import com.unboundid.ldap.sdk.ResultCode;
import com.unboundid.util.NotMutable;
import com.unboundid.util.StaticUtils;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;

import static com.unboundid.ldap.sdk.experimental.ExperimentalMessages.*;



/**
 * This class represents an entry that holds information about a delete
 * operation processed by an LDAP server, as per the specification described in
 * draft-chu-ldap-logschema-00.
 */
@NotMutable()
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class DraftChuLDAPLogSchema00DeleteEntry
       extends DraftChuLDAPLogSchema00Entry
{
  /**
   * The name of the attribute used to hold information about attributes
   * contained in the entry that was deleted.
   */
  public static final String ATTR_DELETED_ATTRIBUTE = "reqOld";



  /**
   * The serial version UID for this serializable class.
   */
  private static final long serialVersionUID = -4326357861964770357L;



  // The list of deleted attributes, if available.
  private final List deletedAttributes;



  /**
   * Creates a new instance of this delete access log entry from the provided
   * entry.
   *
   * @param  entry  The entry used to create this delete access log entry.
   *
   * @throws  LDAPException  If the provided entry cannot be decoded as a valid
   *                         delete access log entry as per the specification
   *                         contained in draft-chu-ldap-logschema-00.
   */
  public DraftChuLDAPLogSchema00DeleteEntry(final Entry entry)
         throws LDAPException
  {
    super(entry, OperationType.DELETE);

    final byte[][] deletedAttrBytes =
         entry.getAttributeValueByteArrays(ATTR_DELETED_ATTRIBUTE);
    if ((deletedAttrBytes == null) || (deletedAttrBytes.length == 0))
    {
      deletedAttributes = Collections.emptyList();
      return;
    }

    final LinkedHashMap> attrMap = new LinkedHashMap<>(
         StaticUtils.computeMapCapacity(deletedAttrBytes.length));
    for (final byte[] attrBytes : deletedAttrBytes)
    {
      int colonPos = -1;
      for (int i=0; i < attrBytes.length; i++)
      {
        if (attrBytes[i] == ':')
        {
          colonPos = i;
          break;
        }
      }

      if (colonPos < 0)
      {
        throw new LDAPException(ResultCode.DECODING_ERROR,
             ERR_LOGSCHEMA_DECODE_DELETE_OLD_ATTR_MISSING_COLON.get(
                  entry.getDN(), ATTR_DELETED_ATTRIBUTE,
                  StaticUtils.toUTF8String(attrBytes)));
      }
      else if (colonPos == 0)
      {
        throw new LDAPException(ResultCode.DECODING_ERROR,
             ERR_LOGSCHEMA_DECODE_DELETE_OLD_ATTR_MISSING_ATTR.get(
                  entry.getDN(), ATTR_DELETED_ATTRIBUTE,
                  StaticUtils.toUTF8String(attrBytes)));
      }

      if ((colonPos == (attrBytes.length - 1)) ||
          (attrBytes[colonPos+1] != ' '))
      {
        throw new LDAPException(ResultCode.DECODING_ERROR,
             ERR_LOGSCHEMA_DECODE_DELETE_OLD_ATTR_MISSING_SPACE.get(
                  entry.getDN(), ATTR_DELETED_ATTRIBUTE,
                  StaticUtils.toUTF8String(attrBytes)));
      }

      final String attrName =
           StaticUtils.toUTF8String(attrBytes, 0, colonPos);
      final String lowerName = StaticUtils.toLowerCase(attrName);

      List attrList = attrMap.get(lowerName);
      if (attrList == null)
      {
        attrList = new ArrayList<>(10);
        attrMap.put(lowerName, attrList);
      }

      final byte[] attrValue = new byte[attrBytes.length - colonPos - 2];
      if (attrValue.length > 0)
      {
        System.arraycopy(attrBytes, colonPos + 2, attrValue, 0,
             attrValue.length);
      }

      attrList.add(new Attribute(attrName, attrValue));
    }

    final ArrayList oldAttributes = new ArrayList<>(attrMap.size());
    for (final List attrList : attrMap.values())
    {
      if (attrList.size() == 1)
      {
        oldAttributes.addAll(attrList);
      }
      else
      {
        final byte[][] valueArray = new byte[attrList.size()][];
        for (int i=0; i < attrList.size(); i++)
        {
          valueArray[i] = attrList.get(i).getValueByteArray();
        }
        oldAttributes.add(new Attribute(attrList.get(0).getName(), valueArray));
      }
    }

    deletedAttributes = Collections.unmodifiableList(oldAttributes);
  }



  /**
   * Retrieves a list of the attributes from the entry that was deleted, if
   * available.
   *
   * @return  A list of the attributes from the entry that was deleted, or an
   *          empty list if no deleted attribute information was included in the
   *          access log entry.
   */
  public List getDeletedAttributes()
  {
    return deletedAttributes;
  }



  /**
   * Retrieves an {@code DeleteRequest} created from this delete access log
   * entry.
   *
   * @return  The {@code DeleteRequest} created from this delete access log
   *          entry.
   */
  public DeleteRequest toDeleteRequest()
  {
    return new DeleteRequest(getTargetEntryDN(), getRequestControlArray());
  }
}




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