/*
 * Copyright 2005 Werner Guttmann
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package org.exolab.castor.xml.schema;

import org.exolab.castor.xml.schema.facets.MaxExclusive;
import org.exolab.castor.xml.schema.facets.MaxInclusive;
import org.exolab.castor.xml.schema.facets.MinExclusive;
import org.exolab.castor.xml.schema.facets.MinInclusive;

/**
 * A factory to create instances of {@link Facet}s.
 *
 * @see Facet
 * @author <a href="mailto:sergei.ivanov@mail.ru">Sergei Ivanov</a>
 * @version $Revision: 6465 $ $Date: 2006-04-13 06:47:36 -0600 (Thu, 13 Apr 2006) $
 */
public final class FacetFactory {

  /**
   * A private constructor to disallow direct instantiation.
   */
  private FacetFactory() {}

  /**
   * The singleton instance of the factory.
   */
  private static final FacetFactory INSTANCE = new FacetFactory();

  /**
   * Returns the singleton instance of the facet factory.
   * 
   * @return factory instance
   */
  public static FacetFactory getInstance() {
    return INSTANCE;
  }

  /**
   * Creates a new instance of a facet.
   * 
   * @param name facet name (implies facet type)
   * @param value value of the facet
   * @return a new facet instance
   */
  public Facet createFacet(final String name, final String value) {
    Facet facet = null;
    if (Facet.MIN_EXCLUSIVE.equals(name)) {
      facet = new MinExclusive(value);
    } else if (Facet.MIN_INCLUSIVE.equals(name)) {
      facet = new MinInclusive(value);
    } else if (Facet.MAX_INCLUSIVE.equals(name)) {
      facet = new MaxInclusive(value);
    } else if (Facet.MAX_EXCLUSIVE.equals(name)) {
      facet = new MaxExclusive(value);
    } else {
      facet = new Facet(name, value);
    }
    // facet.setOwningType(parent);
    return facet;
  }
}
