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.asterix.external.util;
  
  import org.apache.asterix.common.exceptions.AsterixException;
  import org.apache.asterix.external.api.IDataParserFactory;
  import org.apache.asterix.external.api.IExternalDataSourceFactory;
  import org.apache.asterix.external.api.IExternalDataSourceFactory.DataSourceType;
  import org.apache.asterix.external.api.IRecordDataParserFactory;
  import org.apache.asterix.external.api.IRecordReaderFactory;
  import org.apache.asterix.external.input.record.converter.IRecordConverterFactory;
  
  public class ExternalDataCompatibilityUtils {
  
      private ExternalDataCompatibilityUtils() {
      }
  
      public static void validateCompatibility(IExternalDataSourceFactory dataSourceFactory,
              IDataParserFactory dataParserFactory) throws AsterixException {
          if (dataSourceFactory.getDataSourceType() != dataParserFactory.getDataSourceType()) {
              throw new AsterixException(
                      "datasource-parser mismatch. datasource produces " + dataSourceFactory.getDataSourceType()
                              + " and parser expects " + dataParserFactory.getDataSourceType());
          }
          if (dataSourceFactory.getDataSourceType() == DataSourceType.RECORDS) {
              IRecordReaderFactory<?> recordReaderFactory = (IRecordReaderFactory<?>) dataSourceFactory;
              IRecordDataParserFactory<?> recordParserFactory = (IRecordDataParserFactory<?>) dataParserFactory;
              if (!recordParserFactory.getRecordClass().isAssignableFrom(recordReaderFactory.getRecordClass())) {
                  throw new AsterixException("datasource-parser mismatch. datasource produces records of type "
                          + recordReaderFactory.getRecordClass() + " and parser expects records of type "
                          + recordParserFactory.getRecordClass());
              }
          }
      }
  
      @SuppressWarnings({ "rawtypes", "unchecked" })
      public static void validateCompatibility(IRecordDataParserFactory recordParserFactory,
              IRecordConverterFactory converterFactory) throws AsterixException {
          if (!recordParserFactory.getRecordClass().isAssignableFrom(converterFactory.getOutputClass())) {
              throw new AsterixException(
                      "datasource converter-record parser mismatch. converter produces records of type "
                              + converterFactory.getOutputClass() + " and parser expects records of type "
                              + recordParserFactory.getRecordClass());
          }
      }
  }
  