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/*
 * Licensed to The Apereo Foundation under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 *
 *
 * The Apereo Foundation licenses this file to you under the Educational
 * Community 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://opensource.org/licenses/ecl2.txt
 *
 * 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.opencastproject.smil.api;

import org.opencastproject.smil.entity.api.Smil;
import org.opencastproject.smil.entity.api.SmilObject;

import javax.xml.bind.JAXBException;

/**
 * {@link SmilService} response container for {@link Smil} and
 * {@link SmilObject}s as entities.
 */
public interface SmilResponse {

  /**
   * Returns {@link Smil} object from response.
   *
   * @return {@link Smil} object
   */
  Smil getSmil();

  /**
   * Returns number of entities defined with this response.
   *
   * @return number of entities
   */
  int getEntitiesCount();

  /**
   * Returns {@link SmilObject} if only one entity stored. Throws
   * {@link SmilException} otherwise.
   *
   * @return {@link SmilObject}
   * @throws SmilException if entities count not one
   */
  SmilObject getEntity() throws SmilException;

  /**
   * Returns {@link SmilObject}s if there are any or throws
   * {@link SmilException}.
   *
   * @return {@link SmilObject}s as array
   * @throws SmilException if there are no entities defined by response.
   */
  SmilObject[] getEntities() throws SmilException;

  /**
   * Return XML serialized instance of this {@link SmilResponse}.
   *
   * @return {@link SmilResponse} as XML
   * @throws JAXBException if serialization failed
   */
  String toXml() throws JAXBException;
}