org.apache.hudi.hive.MultiPartKeysValueExtractor Maven / Gradle / Ivy
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* 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
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*/
package org.apache.hudi.hive;
import java.util.Collections;
import org.apache.hudi.common.util.ValidationUtils;
import org.apache.hudi.sync.common.model.PartitionValueExtractor;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;
/**
* Partition Key extractor treating each value delimited by slash as separate key.
*/
public class MultiPartKeysValueExtractor implements PartitionValueExtractor {
@Override
public List extractPartitionValuesInPath(String partitionPath) {
// If the partitionPath is empty string( which means none-partition table), the partition values
// should be empty list.
if (partitionPath.isEmpty()) {
return Collections.emptyList();
}
String[] splits = partitionPath.split("/");
return Arrays.stream(splits).map(s -> {
if (s.contains("=")) {
String[] moreSplit = s.split("=");
ValidationUtils.checkArgument(moreSplit.length == 2, "Partition Field (" + s + ") not in expected format");
return moreSplit[1];
}
return s;
}).collect(Collectors.toList());
}
}