/*
    * 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.runtime;
  
  import org.apache.chemistry.opencmis.client.api.CmisObject;
  import org.apache.chemistry.opencmis.client.api.ObjectId;
  import org.apache.chemistry.opencmis.client.api.ObjectType;
  import org.apache.chemistry.opencmis.client.api.OperationContext;
  import org.apache.chemistry.opencmis.client.api.Relationship;
  import org.apache.chemistry.opencmis.client.api.RelationshipType;
  import org.apache.chemistry.opencmis.commons.PropertyIds;
  import org.apache.chemistry.opencmis.commons.data.ObjectData;
  
  public class RelationshipImpl extends AbstractCmisObject implements Relationship {
  
      private static final long serialVersionUID = 1L;
  
      /**
       * Constructor.
       */
      public RelationshipImpl(SessionImpl session, ObjectType objectType, ObjectData objectData, OperationContext context) {
          initialize(session, objectType, objectData, context);
      }
  
      @Override
      public RelationshipType getRelationshipType() {
          ObjectType objectType = super.getType();
          if (objectType instanceof RelationshipType) {
              return (RelationshipType) objectType;
          } else {
              throw new ClassCastException("Object type is not a relationship type.");
          }
      }
  
      @Override
      public CmisObject getSource() {
          return getSource(getSession().getDefaultContext());
      }
  
      @Override
      public CmisObject getSource(OperationContext context) {
          readLock();
          try {
              ObjectId sourceId = getSourceId();
              if (sourceId == null) {
                  return null;
              }
  
              return getSession().getObject(sourceId, context);
          } finally {
              readUnlock();
          }
      }
  
      @Override
      public ObjectId getSourceId() {
          String sourceId = getPropertyValue(PropertyIds.SOURCE_ID);
          if (sourceId == null || sourceId.length() == 0) {
              return null;
          }
  
          return getSession().createObjectId(sourceId);
      }
  
      @Override
      public CmisObject getTarget() {
          return getTarget(getSession().getDefaultContext());
      }
  
      @Override
      public CmisObject getTarget(OperationContext context) {
          readLock();
          try {
              ObjectId targetId = getTargetId();
              if (targetId == null) {
                  return null;
              }
  
              return getSession().getObject(targetId, context);
          } finally {
              readUnlock();
          }
      }
 
     @Override
     public ObjectId getTargetId() {
         String targetId = getPropertyValue(PropertyIds.TARGET_ID);
         if (targetId == null || targetId.length() == 0) {
             return null;
         }
 
         return getSession().createObjectId(targetId);
     }
 }