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.parser.factory;
  
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.asterix.common.exceptions.CompilationException;
  import org.apache.asterix.common.exceptions.ErrorCode;
  import org.apache.asterix.external.api.IExternalDataRuntimeContext;
  import org.apache.asterix.external.api.IRecordDataParser;
  import org.apache.asterix.external.api.IRecordDataParserFactory;
  import org.apache.asterix.external.input.record.RecordWithMetadataAndPK;
  import org.apache.asterix.external.input.record.converter.IRecordConverterFactory;
  import org.apache.asterix.external.parser.RecordWithMetadataParser;
  import org.apache.asterix.external.provider.ParserFactoryProvider;
  import org.apache.asterix.external.provider.RecordConverterFactoryProvider;
  import org.apache.asterix.external.util.ExternalDataCompatibilityUtils;
  import org.apache.asterix.external.util.ExternalDataConstants;
  import org.apache.asterix.om.types.ARecordType;
  import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  
  public class RecordWithMetadataParserFactory<I, O> implements IRecordDataParserFactory<I> {
  
      private static final long serialVersionUID = 1L;
      private static final List<String> parserFormats =
              Collections.unmodifiableList(Arrays.asList("record-with-metadata"));
      private ARecordType metaType;
      private ARecordType recordType;
      private IRecordDataParserFactory<O> recordParserFactory;
      private IRecordConverterFactory<I, RecordWithMetadataAndPK<O>> converterFactory;
  
      @SuppressWarnings("unchecked")
      @Override
      public void configure(Map<String, String> configuration) throws AlgebricksException {
          // validate first
          String recordFormat = configuration.get(ExternalDataConstants.KEY_RECORD_FORMAT);
          if (recordFormat == null) {
              throw CompilationException.create(ErrorCode.UNKNOWN_RECORD_FORMAT_FOR_META_PARSER,
                      ExternalDataConstants.KEY_RECORD_FORMAT);
          }
          String format = configuration.get(ExternalDataConstants.KEY_FORMAT);
          if (format == null) {
              throw CompilationException.create(ErrorCode.UNKNOWN_RECORD_FORMAT_FOR_META_PARSER,
                      ExternalDataConstants.KEY_FORMAT);
          }
          // Create Parser Factory
          recordParserFactory = (IRecordDataParserFactory<O>) ParserFactoryProvider.getDataParserFactory(recordFormat);
          recordParserFactory.setRecordType(recordType);
          recordParserFactory.setMetaType(metaType);
          recordParserFactory.configure(configuration);
          // Create Converter Factory
          converterFactory = RecordConverterFactoryProvider.getConverterFactory(format, recordFormat);
          converterFactory.setRecordType(recordType);
          converterFactory.setMetaType(metaType);
          converterFactory.configure(configuration);
          // Validate Compatibility
          ExternalDataCompatibilityUtils.validateCompatibility(recordParserFactory, converterFactory);
      }
  
      @Override
      public void setRecordType(ARecordType recordType) {
          this.recordType = recordType;
      }
  
      @Override
      public void setMetaType(ARecordType metaType) {
          this.metaType = metaType;
      }
  
      @Override
      public List<String> getParserFormats() {
          return parserFormats;
      }
  
      @Override
      public Class<?> getRecordClass() {
          return converterFactory.getInputClass();
      }
  
      @Override
      public IRecordDataParser<I> createRecordParser(IExternalDataRuntimeContext context) throws HyracksDataException {
          IRecordDataParser<O> recordParser = recordParserFactory.createRecordParser(context);
          return new RecordWithMetadataParser<I, O>(metaType, recordParser, converterFactory.createConverter(context));
      }
  
  }
  