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.camel.component.ignite.set;
  
  import java.util.Collection;
  import java.util.Collections;
  import java.util.Iterator;
  
  import org.apache.camel.AsyncCallback;
  import org.apache.camel.Exchange;
  import org.apache.camel.Message;
  import org.apache.camel.component.ignite.IgniteConstants;
  import org.apache.camel.support.DefaultAsyncProducer;
  import org.apache.camel.support.MessageHelper;
  import org.apache.ignite.IgniteSet;
  
  /**
   * The Ignite Set producer.
   */
  public class IgniteSetProducer extends DefaultAsyncProducer {
  
      private IgniteSetEndpoint endpoint;
      private IgniteSet<Object> set;
  
      public IgniteSetProducer(IgniteSetEndpoint endpoint, IgniteSet<Object> set) {
          super(endpoint);
          this.endpoint = endpoint;
          this.set = set;
      }
  
      @Override
      @SuppressWarnings("unchecked")
      public boolean process(Exchange exchange, AsyncCallback callback) {
          Message in = exchange.getIn();
          Message out = exchange.getOut();
          MessageHelper.copyHeaders(exchange.getIn(), out, true);
  
          Object body = in.getBody();
  
          switch (setOperationFor(exchange)) {
  
              case ADD:
                  if (Collection.class.isAssignableFrom(body.getClass()) && !endpoint.isTreatCollectionsAsCacheObjects()) {
                      out.setBody(set.addAll((Collection<? extends Object>) body));
                  } else {
                      out.setBody(set.add(body));
                  }
                  break;
  
              case CONTAINS:
                  if (Collection.class.isAssignableFrom(body.getClass()) && !endpoint.isTreatCollectionsAsCacheObjects()) {
                      out.setBody(set.containsAll((Collection<? extends Object>) body));
                  } else {
                      out.setBody(set.contains(body));
                  }
                  break;
  
              case SIZE:
                  out.setBody(set.size());
                  break;
  
              case REMOVE:
                  if (Collection.class.isAssignableFrom(body.getClass()) && !endpoint.isTreatCollectionsAsCacheObjects()) {
                      out.setBody(set.removeAll((Collection<? extends Object>) body));
                  } else {
                      out.setBody(set.remove(body));
                  }
                  break;
  
              case CLEAR:
                  if (endpoint.isPropagateIncomingBodyIfNoReturnValue()) {
                      out.setBody(body);
                  }
                  set.clear();
                  break;
  
              case ITERATOR:
                  Iterator<?> iterator = set.iterator();
                  out.setBody(iterator);
                  break;
  
              case ARRAY:
                  out.setBody(set.toArray());
                  break;
  
              case RETAIN_ALL:
                  if (Collection.class.isAssignableFrom(body.getClass())) {
                      out.setBody(set.retainAll((Collection<? extends Object>) body));
                  } else {
                      out.setBody(set.retainAll(Collections.singleton(body)));
                  }
                  break;
  
              default:
                  exchange.setException(new UnsupportedOperationException("Operation not supported by Ignite Set producer."));
                  break;
          }
  
          callback.done(false);
          return false;
      }
  
      private IgniteSetOperation setOperationFor(Exchange exchange) {
          return exchange.getIn().getHeader(IgniteConstants.IGNITE_SETS_OPERATION, endpoint.getOperation(),
                  IgniteSetOperation.class);
      }
  
  }
  