PartitionKey.java

// Licensed to the Apache Software Foundation (ASF) under one
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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
//
// Copied from
// https://github.com/awslabs/aws-glue-data-catalog-client-for-apache-hive-metastore/blob/branch-3.4.0/
//

package com.amazonaws.glue.catalog.util;

import com.amazonaws.services.glue.model.Partition;

import java.util.List;

public class PartitionKey {

  private final List<String> partitionValues;
  private final int hashCode;

  public PartitionKey(Partition partition) {
    this(partition.getValues());
  }

  public PartitionKey(List<String> partitionValues) {
    if (partitionValues == null) {
      throw new IllegalArgumentException("Partition values cannot be null");
    }
    this.partitionValues = partitionValues;
    this.hashCode = partitionValues.hashCode();
  }

  @Override
  public boolean equals(Object other) {
    return this == other || (other != null && other instanceof PartitionKey
            && this.partitionValues.equals(((PartitionKey) other).partitionValues));
  }

  @Override
  public int hashCode() {
    return hashCode;
  }

  List<String> getValues() {
    return partitionValues;
  }

}