content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.apache.chemistry.opencmis.client.api;
  
  /**
   * CMIS relationship interface.
   * 
   * @cmis 1.0
   */
  public interface Relationship extends CmisObject, RelationshipProperties {
  
      /**
       * Returns the object type as a relationship type.
       * 
       * @return the relationship type
       * 
       * @throws ClassCastException
       *             if the object type is not a relationship type
       * 
       * @cmis 1.0
       */
      RelationshipType getRelationshipType();
  
      /**
       * Gets the source object. If the source object ID is invalid, {@code null}
       * will be returned.
       * 
       * @cmis 1.0
       */
      CmisObject getSource();
  
      /**
       * Gets the source object using the given {@link OperationContext}. If the
       * source object ID is invalid, {@code null} will be returned.
       * 
       * @cmis 1.0
       */
      CmisObject getSource(OperationContext context);
  
      /**
       * Gets the target object. If the target object ID is invalid, {@code null}
       * will be returned.
       * 
       * @cmis 1.0
       */
      CmisObject getTarget();
  
      /**
       * Gets the target object using the given {@link OperationContext}. If the
       * target object ID is invalid, {@code null} will be returned.
       * 
       * @cmis 1.0
       */
      CmisObject getTarget(OperationContext context);
  }
  