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.dataset;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.camel.Exchange;
  import org.apache.camel.Message;
  import org.apache.camel.Processor;
  
  /**
   * Base class for DataSet
   */
  public abstract class DataSetSupport implements DataSet {
      private Map<String, Object> defaultHeaders;
      private Processor outputTransformer;
      private long size = 10;
      private long reportCount = -1;
  
      protected DataSetSupport() {
      }
  
      protected DataSetSupport(int size) {
          setSize(size);
      }
  
      @Override
      public void populateMessage(Exchange exchange, long messageIndex) throws Exception {
          Message in = exchange.getIn();
          in.setBody(createMessageBody(messageIndex));
          in.setHeaders(getDefaultHeaders());
          applyHeaders(exchange, messageIndex);
  
          if (outputTransformer != null) {
              outputTransformer.process(exchange);
          }
      }
  
      @Override
      public void assertMessageExpected(DataSetEndpoint dataSetEndpoint, Exchange expected, Exchange actual, long index)
              throws Exception {
          Object expectedBody = expected.getIn().getBody();
          Object actualBody = actual.getIn().getBody();
          if (expectedBody != null) {
              // let's coerce to the correct type
              actualBody = actual.getIn().getMandatoryBody(expectedBody.getClass());
          }
          DataSetEndpoint.assertEquals("message body", expectedBody, actualBody, actual);
      }
  
      // Properties
      //-------------------------------------------------------------------------
  
      @Override
      public long getSize() {
          return size;
      }
  
      public void setSize(long size) {
          this.size = size;
      }
  
      @Override
      public long getReportCount() {
          if (reportCount <= 0) {
              reportCount = getSize() / 5;
          }
          // report cannot be 0 then default to the size
          if (reportCount == 0) {
              reportCount = getSize();
          }
          return reportCount;
      }
  
      /**
       * Sets the number of messages in a group on which we will report that messages have been received.
       */
      public void setReportCount(long reportCount) {
          this.reportCount = reportCount;
      }
  
      public Map<String, Object> getDefaultHeaders() {
          if (defaultHeaders == null) {
              defaultHeaders = new HashMap<>();
              populateDefaultHeaders(defaultHeaders);
          }
          return defaultHeaders;
      }
  
      public void setDefaultHeaders(Map<String, Object> defaultHeaders) {
          this.defaultHeaders = defaultHeaders;
      }
  
      public Processor getOutputTransformer() {
          return outputTransformer;
      }
  
      public void setOutputTransformer(Processor outputTransformer) {
          this.outputTransformer = outputTransformer;
      }
  
      // Implementation methods
      //-------------------------------------------------------------------------
  
      protected abstract Object createMessageBody(long messageIndex);
  
      /**
       * Allows derived classes to add some custom headers for a given message
       */
      protected void applyHeaders(Exchange exchange, long messageIndex) {
      }
  
      /**
       * Allows derived classes to customize a default set of properties
       */
      protected void populateDefaultHeaders(Map<String, Object> map) {
      }
  }
  