/**
 * 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.hive.hcatalog.data;

import java.util.List;

import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.StandardStructObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.StructField;

public class HCatRecordObjectInspector extends StandardStructObjectInspector {

  protected HCatRecordObjectInspector(List<String> structFieldNames,
                    List<ObjectInspector> structFieldObjectInspectors) {
    super(structFieldNames, structFieldObjectInspectors);
  }

  @Override
  public Object getStructFieldData(Object data, StructField fieldRef) {
    if (data == null) {
      return new IllegalArgumentException("Data passed in to get field from was null!");
    }

    int fieldID = ((MyField) fieldRef).getFieldID();
    if (!(fieldID >= 0 && fieldID < fields.size())) {
      throw new IllegalArgumentException("Invalid field index [" + fieldID + "]");
    }

    return ((HCatRecord) data).get(fieldID);
  }

  @Override
  public List<Object> getStructFieldsDataAsList(Object o) {
    return ((HCatRecord) o).getAll();
  }

}
