/*
 * 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.hudi.table.format.cow.vector;

import org.apache.flink.table.data.ArrayData;
import org.apache.flink.table.data.MapData;
import org.apache.flink.table.data.columnar.vector.writable.WritableColumnVector;

public class ColumnarGroupMapData implements MapData {

  WritableColumnVector keyVector;
  WritableColumnVector valueVector;
  int rowId;

  public ColumnarGroupMapData(WritableColumnVector keyVector, WritableColumnVector valueVector, int rowId) {
    this.keyVector = keyVector;
    this.valueVector = valueVector;
    this.rowId = rowId;
  }

  @Override
  public int size() {
    if (keyVector == null) {
      return 0;
    }

    if (keyVector instanceof HeapArrayVector) {
      return ((HeapArrayVector) keyVector).getArray(rowId).size();
    }
    throw new UnsupportedOperationException(keyVector.getClass().getName() + " is not supported. Supported vector types: HeapArrayVector");
  }

  @Override
  public ArrayData keyArray() {
    return ((HeapArrayVector) keyVector).getArray(rowId);
  }

  @Override
  public ArrayData valueArray() {
    if (valueVector instanceof HeapArrayVector) {
      return ((HeapArrayVector) valueVector).getArray(rowId);
    } else if (valueVector instanceof HeapArrayGroupColumnVector) {
      return ((HeapArrayGroupColumnVector) valueVector).getArray(rowId);
    }
    throw new UnsupportedOperationException(valueVector.getClass().getName() + " is not supported. Supported vector types: HeapArrayVector, HeapArrayGroupColumnVector");
  }
}
