/*
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
 * Foundation.
 *
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 * or from the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 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 Lesser General Public License for more details.
 *
 * Copyright (c) 2001 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors..  All rights reserved.
 */

package org.pentaho.reporting.engine.classic.core.wizard;

public class EmptyDataAttributes implements DataAttributes {
  public static final EmptyDataAttributes INSTANCE = new EmptyDataAttributes();
  private static final String[] EMPTY_STRING = new String[0];

  public EmptyDataAttributes() {
  }

  public Object clone() throws CloneNotSupportedException {
    return super.clone();
  }

  public String[] getMetaAttributeDomains() {
    return EmptyDataAttributes.EMPTY_STRING;
  }

  public String[] getMetaAttributeNames( final String domainName ) {
    return EmptyDataAttributes.EMPTY_STRING;
  }

  public Object getMetaAttribute( final String domain, final String name, final Class type,
      final DataAttributeContext context ) {
    return null;
  }

  public Object getMetaAttribute( final String domain, final String name, final Class type,
      final DataAttributeContext context, final Object defaultValue ) {
    return defaultValue;
  }

  public ConceptQueryMapper getMetaAttributeMapper( String domain, String name ) {
    return DefaultConceptQueryMapper.INSTANCE;
  }
}