com.unboundid.ldif.AggregateLDIFReaderChangeRecordTranslator Maven / Gradle / Ivy

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/*
 * Copyright 2016-2019 Ping Identity Corporation
 * All Rights Reserved.
 */
/*
 * Copyright (C) 2016-2019 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.ldif;



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

import com.unboundid.util.StaticUtils;
import com.unboundid.util.ThreadSafety;
import com.unboundid.util.ThreadSafetyLevel;



/**
 * This class provides an implementation of an LDIF reader change record
 * translator that can be used to invoke multiple LDIF reader change record
 * translators for each record to be processed.
 */
@ThreadSafety(level=ThreadSafetyLevel.COMPLETELY_THREADSAFE)
public final class AggregateLDIFReaderChangeRecordTranslator
       implements LDIFReaderChangeRecordTranslator
{
  // The set of LDIF reader change record translators to be invoked for each
  // record to process.
  private final List translators;



  /**
   * Creates a new aggregate LDIF reader change record translator that will
   * invoke all of the provided translators for each record to be processed.
   *
   * @param  translators  The set of LDIF reader change record translators to be
   *                      invoked for each record to be processed.
   */
  public AggregateLDIFReaderChangeRecordTranslator(
              final LDIFReaderChangeRecordTranslator... translators)
  {
    this(StaticUtils.toList(translators));
  }



  /**
   * Creates a new aggregate LDIF reader change record translator that will
   * invoke all of the provided translators for each record to be processed.
   *
   * @param  translators  The set of LDIF reader change record translators to be
   *                      invoked for each record to be processed.
   */
  public AggregateLDIFReaderChangeRecordTranslator(
       final Collection translators)
  {
    if (translators == null)
    {
      this.translators = Collections.emptyList();
    }
    else
    {
      this.translators =
           Collections.unmodifiableList(new ArrayList<>(translators));
    }
  }



  /**
   * {@inheritDoc}
   */
  @Override()
  public LDIFChangeRecord translate(final LDIFChangeRecord original,
                                    final long firstLineNumber)
         throws LDIFException
  {
    if (original == null)
    {
      return null;
    }

    LDIFChangeRecord r = original;
    for (final LDIFReaderChangeRecordTranslator t : translators)
    {
      r = t.translate(r, firstLineNumber);
      if (r == null)
      {
        return null;
      }
    }

    return r;
  }
}