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.column.operation.lsm.merge;
  
  import java.io.DataOutput;
  import java.io.IOException;
  
  import org.apache.asterix.column.values.IColumnValuesReaderFactory;
  import org.apache.asterix.om.types.ARecordType;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.data.std.api.IValueReference;
  import org.apache.hyracks.dataflow.common.comm.io.ArrayTupleBuilder;
  import org.apache.hyracks.dataflow.common.data.accessors.ITupleReference;
  import org.apache.hyracks.storage.am.lsm.btree.column.api.projection.IColumnProjectionInfo;
  import org.apache.hyracks.storage.am.lsm.btree.column.api.projection.IColumnTupleProjector;
  
  public class MergeColumnTupleProjector implements IColumnTupleProjector {
      private final ARecordType datasetType;
      private final ARecordType metaType;
      private final int numberOfPrimaryKeys;
      private final IColumnValuesReaderFactory readerFactory;
  
      public MergeColumnTupleProjector(ARecordType datasetType, ARecordType metaType, int numberOfPrimaryKeys,
              IColumnValuesReaderFactory readerFactory) {
          this.datasetType = datasetType;
          this.metaType = metaType;
          this.numberOfPrimaryKeys = numberOfPrimaryKeys;
          this.readerFactory = readerFactory;
      }
  
      @Override
      public IColumnProjectionInfo createProjectionInfo(IValueReference columnMetadata) throws HyracksDataException {
          try {
              return MergeColumnReadMetadata.create(datasetType, metaType, numberOfPrimaryKeys, readerFactory,
                      columnMetadata);
          } catch (IOException e) {
              throw HyracksDataException.create(e);
          }
      }
  
      @Override
      public ITupleReference project(ITupleReference tuple, DataOutput dos, ArrayTupleBuilder tb) throws IOException {
          throw new IllegalAccessError(getClass().getName());
      }
  }
  