001/*
002 * Copyright 2016-2017 UnboundID Corp.
003 * All Rights Reserved.
004 */
005/*
006 * Copyright (C) 2016-2017 UnboundID Corp.
007 *
008 * This program is free software; you can redistribute it and/or modify
009 * it under the terms of the GNU General Public License (GPLv2 only)
010 * or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
011 * as published by the Free Software Foundation.
012 *
013 * This program is distributed in the hope that it will be useful,
014 * but WITHOUT ANY WARRANTY; without even the implied warranty of
015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
016 * GNU General Public License for more details.
017 *
018 * You should have received a copy of the GNU General Public License
019 * along with this program; if not, see <http://www.gnu.org/licenses>.
020 */
021package com.unboundid.ldif;
022
023
024
025import java.util.ArrayList;
026import java.util.Collection;
027import java.util.Collections;
028import java.util.List;
029
030import com.unboundid.util.StaticUtils;
031import com.unboundid.util.ThreadSafety;
032import com.unboundid.util.ThreadSafetyLevel;
033
034
035
036/**
037 * This class provides an implementation of an LDIF writer change record
038 * translator that can be used to invoke multiple LDIF writer change record
039 * translators for each record to be processed.
040 */
041@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
042public final class AggregateLDIFWriterChangeRecordTranslator
043       implements LDIFWriterChangeRecordTranslator
044{
045  // The set of LDIF writer change record translators to be invoked for each
046  // record to process.
047  private final List<LDIFWriterChangeRecordTranslator> translators;
048
049
050
051  /**
052   * Creates a new aggregate LDIF writer change record translator that will
053   * invoke all of the provided translators for each record to be processed.
054   *
055   * @param  translators  The set of LDIF writer change record translators to be
056   *                      invoked for each record to be processed.
057   */
058  public AggregateLDIFWriterChangeRecordTranslator(
059              final LDIFWriterChangeRecordTranslator... translators)
060  {
061    this(StaticUtils.toList(translators));
062  }
063
064
065
066  /**
067   * Creates a new aggregate LDIF writer change record translator that will
068   * invoke all of the provided translators for each record to be processed.
069   *
070   * @param  translators  The set of LDIF writer change record translators to be
071   *                      invoked for each record to be processed.
072   */
073  public AggregateLDIFWriterChangeRecordTranslator(
074       final Collection<? extends LDIFWriterChangeRecordTranslator> translators)
075  {
076    if (translators == null)
077    {
078      this.translators = Collections.emptyList();
079    }
080    else
081    {
082      this.translators = Collections.unmodifiableList(
083           new ArrayList<LDIFWriterChangeRecordTranslator>(translators));
084    }
085  }
086
087
088
089  /**
090   * {@inheritDoc}
091   */
092  public LDIFChangeRecord translateChangeRecordToWrite(
093                               final LDIFChangeRecord original)
094  {
095    if (original == null)
096    {
097      return null;
098    }
099
100    LDIFChangeRecord r = original;
101    for (final LDIFWriterChangeRecordTranslator t : translators)
102    {
103      r = t.translateChangeRecordToWrite(r);
104      if (r == null)
105      {
106        return null;
107      }
108    }
109
110    return r;
111  }
112}