gobblin-data-management/src/main/java/org/apache/gobblin/data/management/copy/predicates/ExistingPartitionSkipPredicate.java

/*
 * 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.gobblin.data.management.copy.predicates;

import com.google.common.base.Predicate;
import javax.annotation.Nullable;
import org.apache.gobblin.data.management.copy.hive.HivePartitionFileSet;


/**
 * This skip predicate will skip any partition that's already registered in the destination
 * hive table.
 */
public class ExistingPartitionSkipPredicate implements Predicate<HivePartitionFileSet> {
  @Override
  public boolean apply(@Nullable HivePartitionFileSet input) {
    if (input == null) {
      return true;
    }

    return input.getExistingTargetPartition().isPresent();
  }
}